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base: rust:0.6.1
Branches Tags
rust:main rust:stuhood.upstream-erased-sort-computer rust:trinity.pointard/ff-query rust:bucket_id_agg rust:paradedb/fix-agg-validation rust:flatheadmill-geo rust:paradedb-paradedb/fix-overflow-issue rust:low_card_optimization rust:paul.masurel/clippy rust:fix_size_hint rust:qw-airmail-20250916 rust:unit-test-aggregation-sum-other rust:clippy-and-cleanups rust:trinity.pointard/opti-sstable-sorted-ords-to-term rust:release_0.24 rust:dependabot/cargo/rand-0.9.1 rust:dependabot/cargo/lru-0.14.0 rust:dependabot/cargo/fs4-0.13.1 rust:tagged-user-input-ast rust:1686a/parse-agg-res rust:dependabot/cargo/rand_distr-0.5.1 rust:issue/2411-adding-panic-handler-to-rayon-merge-thread-pool rust:dependabot/cargo/nom-8 rust:upgrade_deps rust:test_parser rust:dependabot/github_actions/codecov/codecov-action-5 rust:binggan-0.12.0 rust:agg_format rust:path_collector rust:test_order_bug rust:test_columnar_multi rust:columnar_optionalmask_in_multivalues rust:prefix-phrase-query-optim rust:tantivy-with-oneshot rust:update_example rust:store-reader-enumerate rust:document-deserialize-seed rust:check_doc_mem rust:experimental-do-not-merge rust:expdonotmerge rust:cherry-pick-vec-instead-of-btreemap rust:validate_length rust:raphael_bench_avx_filter rust:raphael_optim_memset2 rust:query-field-name-avoid-alloc rust:check_bug rust:missing_test rust:list_fields rust:block-cache-control rust:trinity--multilayer-sstable rust:tracing-tantivy2 rust:tracing-tantivy rust:index_writer_err rust:default_fast_field_tokenizer rust:fmassot/add-preserve-original-ascii-folding rust:numeric_with_str_col rust:straightforward-simplify rust:fmassot/fake-test-branch rust:fmassot/dynamic-tokenizer-poc-follow-up rust:fmassot/add-box-token-filter-and-refactor rust:dynamic-tokenizer-proof-of-concept rust:fmassot/add-box-tokenizer-and-token-filter rust:tokenizer-api-0.1.1 rust:addconversion rust:removed-extra-enum-alternative-for-datetime-precision rust:issue/1981-reproduce-bm25-bug rust:tokenizer_docs rust:merge-proptests rust:columnar-todo rust:quickwit-0.5 rust:remove-byteorder rust:remove_dyn rust:pr/alexcole/1855-inject-bm25-statistics rust:evance-expose-build-query-from-user-input-ast rust:missing-specialized-method-arcdyncolumn rust:fast-u64-range-query rust:0.19.2 rust:columnar-cli2 rust:trinity--pub-term-as-slice rust:typed-column3 rust:columnar-merge3 rust:columnar-merge-exploring-fn rust:use_columnar rust:typed-column2 rust:term_agg_bucket_limit rust:range rust:typed-column rust:columnar-main rust:forced-types rust:u128-columnar rust:use_stats rust:truncation_comment rust:0.19.1 rust:trinity/yoke-documents rust:column-handle rust:columnar-cli rust:columnar rust:revert-1711-sparse_dense_index rust:commit-changes rust:sparse_dense_index_headroom rust:optional_column rust:no-column-for-multivalued rust:fmassot--bench-hdfs-with-array rust:bugfix-position-broken rust:float rust:simplify rust:debug_time rust:sparse_codecs rust:fix_estimate rust:column-reader rust:column-reader-b rust:columnreader-simple rust:col-trait-refact rust:ip_fastfield rust:column-trait-2 rust:refact-dyn-column rust:column-trait rust:refact-codec-trait rust:pr/PSeitz/1485-1 rust:fastfieldcodec rust:termmap_per_field rust:fastfield-codecs-tests rust:rayon-indexing-writers rust:issue/1251 rust:index-bench rust:fix_open_bytes_index rust:warming rust:revert-1222-issue/1195 rust:add-random-bench-for-fast-field rust:wasm-friendly-exploratory rust:revert-1159-patch-1 rust:debug-position-panic-0.15.3 rust:fix-issue-1111 rust:remove_rand rust:unused-deps rust:hfb/phrase_match_slop rust:0.15.3 rust:expose-min-max-on-multi-fast-field-reader rust:revert-1094-expose-min-max-on-multi-fast-field-reader rust:hotfix-1088 rust:owned-bytes-instead-of-rawdoc rust:rihardsk-date-ranges rust:issue/997 rust:0.13.3 rust:fail-fast-store-checkpoint rust:debugging-store rust:issue/reproduce-897 rust:issue/969-reproduce rust:troublescooter-static rust:intermediate-mergeable-troublescooter rust:barrotsteindev-filter-collector-tpredicatevalue rust:issue/938b rust:issue/938 rust:barrotsteindev-filter-collector rust:issue/922 rust:issue/896 rust:quickfix-explain rust:slog rust:limit-random-seeks rust:0.13.1 rust:issue/866b rust:bugfix-unittest-macos rust:githubactions rust:fieldnorm_readers rust:blockwand rust:nodeffeatfails rust:removedaliveiterator rust:robyoung-introduce-offset-to-top-docs rust:specialization-of-foreach-for-union-scorer rust:elshize-bmw rust:cutt rust:nrt rust:storewriter-out rust:segment_writer_in_ram2 rust:polling rust:audunhalland-query-boost rust:poll-meta rust:segment_writer_in_ram rust:bundle rust:petr-tik-n662_footer_is_incompatible_impl rust:race-condition-in-tests rust:hotfix-0.10.3-issue681 rust:remove-tru rust:kkoziara-pre-tokenized-text rust:issue/681 rust:issue/680 rust:refactoring/field rust:updating/uuid rust:fix-bench rust:hotfix-656 rust:readd-macos-ci rust:incremental-search rust:crate-division rust:streamer-with-state rust:criterion rust:python-binding-changes rust:bump-version rust:gh-pages rust:issue/554 rust:perf/experimental-union-for_each rust:issue/526b rust:softcommits rust:0.9.1-hotfix rust:revert-521-fix-non-english-stemmers rust:issue/500-hotfix rust:hotfix/0.8.2 rust:issue/483 rust:bug/merge-deted rust:issue/407 rust:issue/457 rust:segment_fruits rust:doc rust:dds/lenient rust:issue/webasm rust:issue/396 rust:broken_collector_with_result rust:dss/automaton-weight-suggestion rust:wasm rust:common-crawl rust:tantivy-imhotep
rust:0.25.0 rust:0.22.1 rust:0.24.2 rust:0.24.1 rust:tantivy-query-grammar-v0.24.0 rust:tantivy-columnar-v0.5.0 rust:tantivy-bitpacker-v0.8.0 rust:ownedbytes-v0.9.0 rust:tantivy-stacker-v0.5.0 rust:tantivy-sstable-v0.5.0 rust:tantivy-common-v0.9.0 rust:tantivy-tokenizer-api-v0.5.0 rust:0.24 rust:qw-airmail-20250224-hotfix-merge-panic rust:qw-airmail-20250219-hotfix-merge-panic rust:qw-airmail-202406 rust:qw-airmail-20240611 rust:qw-airmail-20240606 rust:quickwit-rev rust:0.22.0 rust:tantivy-stacker-v0.3.0 rust:ownedbytes-v0.7.0 rust:tantivy-tokenizer-api-v0.3.0 rust:tantivy-columnar-v0.3.0 rust:tantivy-common-v0.7.0 rust:tantivy-query-grammar-v0.22.0 rust:tantivy-sstable-v0.3.0 rust:tantivy-bitpacker-v0.6.0 rust:0.21.1 rust:0.21 rust:0.20.2 rust:0.20.1 rust:0.20 rust:quickwit-0.5-rev rust:0.19.2 rust:0.19.1 rust:0.19 rust:0.18.1 rust:0.18 rust:0.17 rust:0.16.1 rust:0.15.3 rust:0.15.2 rust:0.15.1 rust:0.15 rust:0.14 rust:0.13.3 rust:0.13.2 rust:0.13.1 rust:0.13 rust:0.12 rust:0.11.3 rust:0.11.1 rust:0.11 rust:0.10.3 rust:0.1 rust:0.10.2 rust:0.10.1 rust:0.10.0 rust:0.9.1 rust:0.9 rust:0.8.2 rust:0.8.2b rust:0.8.1 rust:0.8.0 rust:0.7.2 rust:0.7.1 rust:0.7.0 rust:0.6.1 rust:0.6.0 rust:0.5.2 rust:0.5.1 rust:0.5.0 rust:0.4.3 rust:0.4.2 rust:0.4.0 rust:0.3.1 rust:0.3.0 rust:0.2.0
...
compare: rust:quickfix-explain
Branches Tags
rust:stuhood.upstream-erased-sort-computer rust:main rust:trinity.pointard/ff-query rust:bucket_id_agg rust:paradedb/fix-agg-validation rust:flatheadmill-geo rust:paradedb-paradedb/fix-overflow-issue rust:low_card_optimization rust:paul.masurel/clippy rust:fix_size_hint rust:qw-airmail-20250916 rust:unit-test-aggregation-sum-other rust:clippy-and-cleanups rust:trinity.pointard/opti-sstable-sorted-ords-to-term rust:release_0.24 rust:dependabot/cargo/rand-0.9.1 rust:dependabot/cargo/lru-0.14.0 rust:dependabot/cargo/fs4-0.13.1 rust:tagged-user-input-ast rust:1686a/parse-agg-res rust:dependabot/cargo/rand_distr-0.5.1 rust:issue/2411-adding-panic-handler-to-rayon-merge-thread-pool rust:dependabot/cargo/nom-8 rust:upgrade_deps rust:test_parser rust:dependabot/github_actions/codecov/codecov-action-5 rust:binggan-0.12.0 rust:agg_format rust:path_collector rust:test_order_bug rust:test_columnar_multi rust:columnar_optionalmask_in_multivalues rust:prefix-phrase-query-optim rust:tantivy-with-oneshot rust:update_example rust:store-reader-enumerate rust:document-deserialize-seed rust:check_doc_mem rust:experimental-do-not-merge rust:expdonotmerge rust:cherry-pick-vec-instead-of-btreemap rust:validate_length rust:raphael_bench_avx_filter rust:raphael_optim_memset2 rust:query-field-name-avoid-alloc rust:check_bug rust:missing_test rust:list_fields rust:block-cache-control rust:trinity--multilayer-sstable rust:tracing-tantivy2 rust:tracing-tantivy rust:index_writer_err rust:default_fast_field_tokenizer rust:fmassot/add-preserve-original-ascii-folding rust:numeric_with_str_col rust:straightforward-simplify rust:fmassot/fake-test-branch rust:fmassot/dynamic-tokenizer-poc-follow-up rust:fmassot/add-box-token-filter-and-refactor rust:dynamic-tokenizer-proof-of-concept rust:fmassot/add-box-tokenizer-and-token-filter rust:tokenizer-api-0.1.1 rust:addconversion rust:removed-extra-enum-alternative-for-datetime-precision rust:issue/1981-reproduce-bm25-bug rust:tokenizer_docs rust:merge-proptests rust:columnar-todo rust:quickwit-0.5 rust:remove-byteorder rust:remove_dyn rust:pr/alexcole/1855-inject-bm25-statistics rust:evance-expose-build-query-from-user-input-ast rust:missing-specialized-method-arcdyncolumn rust:fast-u64-range-query rust:0.19.2 rust:columnar-cli2 rust:trinity--pub-term-as-slice rust:typed-column3 rust:columnar-merge3 rust:columnar-merge-exploring-fn rust:use_columnar rust:typed-column2 rust:term_agg_bucket_limit rust:range rust:typed-column rust:columnar-main rust:forced-types rust:u128-columnar rust:use_stats rust:truncation_comment rust:0.19.1 rust:trinity/yoke-documents rust:column-handle rust:columnar-cli rust:columnar rust:revert-1711-sparse_dense_index rust:commit-changes rust:sparse_dense_index_headroom rust:optional_column rust:no-column-for-multivalued rust:fmassot--bench-hdfs-with-array rust:bugfix-position-broken rust:float rust:simplify rust:debug_time rust:sparse_codecs rust:fix_estimate rust:column-reader rust:column-reader-b rust:columnreader-simple rust:col-trait-refact rust:ip_fastfield rust:column-trait-2 rust:refact-dyn-column rust:column-trait rust:refact-codec-trait rust:pr/PSeitz/1485-1 rust:fastfieldcodec rust:termmap_per_field rust:fastfield-codecs-tests rust:rayon-indexing-writers rust:issue/1251 rust:index-bench rust:fix_open_bytes_index rust:warming rust:revert-1222-issue/1195 rust:add-random-bench-for-fast-field rust:wasm-friendly-exploratory rust:revert-1159-patch-1 rust:debug-position-panic-0.15.3 rust:fix-issue-1111 rust:remove_rand rust:unused-deps rust:hfb/phrase_match_slop rust:0.15.3 rust:expose-min-max-on-multi-fast-field-reader rust:revert-1094-expose-min-max-on-multi-fast-field-reader rust:hotfix-1088 rust:owned-bytes-instead-of-rawdoc rust:rihardsk-date-ranges rust:issue/997 rust:0.13.3 rust:fail-fast-store-checkpoint rust:debugging-store rust:issue/reproduce-897 rust:issue/969-reproduce rust:troublescooter-static rust:intermediate-mergeable-troublescooter rust:barrotsteindev-filter-collector-tpredicatevalue rust:issue/938b rust:issue/938 rust:barrotsteindev-filter-collector rust:issue/922 rust:issue/896 rust:quickfix-explain rust:slog rust:limit-random-seeks rust:0.13.1 rust:issue/866b rust:bugfix-unittest-macos rust:githubactions rust:fieldnorm_readers rust:blockwand rust:nodeffeatfails rust:removedaliveiterator rust:robyoung-introduce-offset-to-top-docs rust:specialization-of-foreach-for-union-scorer rust:elshize-bmw rust:cutt rust:nrt rust:storewriter-out rust:segment_writer_in_ram2 rust:polling rust:audunhalland-query-boost rust:poll-meta rust:segment_writer_in_ram rust:bundle rust:petr-tik-n662_footer_is_incompatible_impl rust:race-condition-in-tests rust:hotfix-0.10.3-issue681 rust:remove-tru rust:kkoziara-pre-tokenized-text rust:issue/681 rust:issue/680 rust:refactoring/field rust:updating/uuid rust:fix-bench rust:hotfix-656 rust:readd-macos-ci rust:incremental-search rust:crate-division rust:streamer-with-state rust:criterion rust:python-binding-changes rust:bump-version rust:gh-pages rust:issue/554 rust:perf/experimental-union-for_each rust:issue/526b rust:softcommits rust:0.9.1-hotfix rust:revert-521-fix-non-english-stemmers rust:issue/500-hotfix rust:hotfix/0.8.2 rust:issue/483 rust:bug/merge-deted rust:issue/407 rust:issue/457 rust:segment_fruits rust:doc rust:dds/lenient rust:issue/webasm rust:issue/396 rust:broken_collector_with_result rust:dss/automaton-weight-suggestion rust:wasm rust:common-crawl rust:tantivy-imhotep
rust:0.25.0 rust:0.22.1 rust:0.24.2 rust:0.24.1 rust:tantivy-query-grammar-v0.24.0 rust:tantivy-columnar-v0.5.0 rust:tantivy-bitpacker-v0.8.0 rust:ownedbytes-v0.9.0 rust:tantivy-stacker-v0.5.0 rust:tantivy-sstable-v0.5.0 rust:tantivy-common-v0.9.0 rust:tantivy-tokenizer-api-v0.5.0 rust:0.24 rust:qw-airmail-20250224-hotfix-merge-panic rust:qw-airmail-20250219-hotfix-merge-panic rust:qw-airmail-202406 rust:qw-airmail-20240611 rust:qw-airmail-20240606 rust:quickwit-rev rust:0.22.0 rust:tantivy-stacker-v0.3.0 rust:ownedbytes-v0.7.0 rust:tantivy-tokenizer-api-v0.3.0 rust:tantivy-columnar-v0.3.0 rust:tantivy-common-v0.7.0 rust:tantivy-query-grammar-v0.22.0 rust:tantivy-sstable-v0.3.0 rust:tantivy-bitpacker-v0.6.0 rust:0.21.1 rust:0.21 rust:0.20.2 rust:0.20.1 rust:0.20 rust:quickwit-0.5-rev rust:0.19.2 rust:0.19.1 rust:0.19 rust:0.18.1 rust:0.18 rust:0.17 rust:0.16.1 rust:0.15.3 rust:0.15.2 rust:0.15.1 rust:0.15 rust:0.14 rust:0.13.3 rust:0.13.2 rust:0.13.1 rust:0.13 rust:0.12 rust:0.11.3 rust:0.11.1 rust:0.11 rust:0.10.3 rust:0.1 rust:0.10.2 rust:0.10.1 rust:0.10.0 rust:0.9.1 rust:0.9 rust:0.8.2 rust:0.8.2b rust:0.8.1 rust:0.8.0 rust:0.7.2 rust:0.7.1 rust:0.7.0 rust:0.6.1 rust:0.6.0 rust:0.5.2 rust:0.5.1 rust:0.5.0 rust:0.4.3 rust:0.4.2 rust:0.4.0 rust:0.3.1 rust:0.3.0 rust:0.2.0

452 Commits
0.6.1 ... quickfix-e

Author SHA1 Message Date
Paul Masurel
7720d21265 Closes #896 - Facet reader related 
Bugfix. Acquiring a facet reader on a segment that does not contain any
doc with this facet returns `None`.
 2020-10-01 20:25:28 +09:00
Paul Masurel
c339b05789 Bumped version and edited changelog 2020-09-19 21:13:19 +09:00
Paul Masurel
2d3c657f9d Added Send Sync to collectors. 2020-09-19 21:04:44 +09:00
Paul Masurel
07f9b828ae Added Send and Sync to the Query trait. 2020-09-19 21:04:29 +09:00
Paul Masurel
3dd0322f4c Bumped version 2020-08-19 22:41:48 +09:00
Paul Masurel
2481c87be8 Block wand (#856) 2020-08-19 22:36:36 +09:00
Paul Masurel
b6a664b5f8 cargo fmt 2020-08-16 12:40:50 +09:00
lyj
25b666a7c9 Update occur.rs (#862) 2020-08-16 10:49:55 +09:00
Paul Masurel
9b41912e66 Bugfix (#861) 2020-08-12 16:06:24 +09:00
Paul Masurel
8e74bb98b5 Added field norm readers (#854) 2020-07-20 13:05:05 +09:00
Paul Masurel
6db8bb49d6 Assert nearly equals macro (#853) 
* Assert nearly equals macro

* Renamed specialized_scorer in TermScorer
 2020-07-17 16:40:41 +09:00
lyj
410aed0176 Update segment_updater.rs (#848) 2020-07-16 12:33:11 +09:00
aptend
00a239a712 fix typo in index_meta.rs (#851) 2020-07-16 12:32:45 +09:00
Paul Masurel
68fe406924 Removed asserts (#850) 2020-07-16 12:24:55 +09:00
Paul Masurel
f71b04acb0 Bugfix. (#849) 
go_to_first_doc was typically calling seek with a target smaller than
doc.

Since SegmentPostings typically do a linear search on the full block,
regardless of the current position, it could have our segment postings
go backward.
 2020-07-16 10:57:51 +09:00
lyj
1ab7f660a4 Update index.rs (#846) 2020-07-02 15:11:38 +09:00
Sean Stangl
0ebbc4cb5a Fix incorrect SimpleTokenizer link in documentation (#844) 2020-07-01 10:26:36 +09:00
lyj
5300cb5da0 Update mod.rs (#845) 2020-07-01 10:25:26 +09:00
Ype Kingma
7d773abc92 Boolean query: do not combine excluded scores. (#840) 
* Do nothing when combining score values of excluded scores.

* Add test case for two excluded.

* Test score for two excluded terms.

* Use TopDocs in test_boolean_query_two_excluded
 2020-06-08 20:01:19 +09:00
Paul Masurel
c34541ccce Alive doc iterator. (#837) 2020-06-05 19:42:51 +09:00
Paul Masurel
1cc5bd706c Fixes build for no-default-features (#839) 2020-06-05 19:41:55 +09:00
Paul Masurel
4026d183bc Small readability change 2020-06-03 09:04:57 +09:00
Paul Masurel
c0f5645cd9 Move for_each functions from Scorer to Weight. (#836) 
* Move for_each functions from Scorer to Weight.

* Specialized foreach / foreach_pruning for union of termscorer.
 2020-06-01 11:31:18 +09:00
Paul Masurel
cbff874e43 Change the loading of blocks. 2020-05-27 16:36:50 +09:00
Paul Masurel
baf015fc57 Simplification of the segment postings seek implementation. (#834) 2020-05-27 08:49:47 +09:00
Paul Masurel
7275ebdf3c Skiprefactoring skipabsolute (#831) 
Simplification of the way we handle positions.
 2020-05-25 09:51:23 +09:00
Paul Masurel
b974e7ce34 Closes #828. (#829) 
There was a bug in the LogMergePolicy that was surfacing when there were
segments, but all of the segments were larger than the max limit.

After filtering, the list of segments candidate for merge was 0, and
the code was indexing the first element of an empty Vec.
 2020-05-22 16:24:07 +09:00
Paul Masurel
8f8f34499f Updated CHANGELOG with the TopCollector offset information and cargo fmt. 2020-05-20 22:26:54 +09:00
Rob Young
6ea6f4bfcd Add offset to TopDocsCollector (#826) 
* Add offset to TopDocsCollector

Add an offset to TopDocsCollector and TopDocs to make it clearer how to
handle pagination.

Closes #822

* Address review comments

- Make Debug formatting of TopDocs clearer.
- Add unit tests for limit and offset on TopCollector.
- Change API for using offset to a fluent interface.
- Add some context to the docstring to clarify what limit and offset are
  equivalent to in other projects.

* Changes required by rebase on e25284

- Pass Collector into TweakedScoreTopCollector and
  CustomScoreTopCollector.
- Add std:: qualifier to f32, i32 etc. Not sure why this was not failing
  already.
- Add unit tests for TopDocs with offset including for tweaked and
  custom score collectors.

In order to convert a TopCollector<Score> to a TopCollector<TScore> I
had to add a `into_tscore` method to `TopCollector`. This is a hack but
I don't know how to avoid it.
 2020-05-20 22:25:24 +09:00
Paul Masurel
e25284bafe Major change in the DocSet/Scorer API (#824) 
- Change in the DocSet and Scorer API. (@fulmicoton). 
A freshly created DocSet point directly to their first doc. A sentinel value called TERMINATED marks the end of a DocSet.
`.advance()` returns the new DocId. `Scorer::skip(target)` has been replaced by `Scorer::seek(target)` and returns the resulting DocId.
As a result, iterating through DocSet now looks as follows
```rust
let mut doc = docset.doc();
while doc != TERMINATED {
   // ...
   doc = docset.advance();
}
```
The change made it possible to greatly simplify a lot of the docset's code.
- Misc internal optimization and introduction of the `Scorer::for_each_pruning` function. (@fulmicoton)
 2020-05-16 16:33:36 +09:00
Fisher Darling
8b67877cd5 Made field methods const fns (#823) 2020-05-16 10:59:50 +09:00
Rob Young
9de1360538 Minor doc and test improvements around fuzzy querying (#825) 2020-05-16 10:59:24 +09:00
Paul Masurel
c55db83609 Closes #805 (#820) 
Added TryInto implementation for IndexReaderBuilder
 2020-04-27 12:01:17 +09:00
Paul Masurel
1e5ebdbf3c Format and remove useless import (#819) 2020-04-27 11:56:49 +09:00
Paul Masurel
9a2090ab21 Create the MMapDirectory does not return a Directory. (#818) 2020-04-27 11:42:20 +09:00
Paul Masurel
e4aaacdb86 Minor change in README.md 2020-04-21 21:30:34 +09:00
Paul Masurel
29acf1104d Update README's claim on performance. 2020-04-21 14:44:26 +09:00
Paul Masurel
3d34fa0b69 Fixed changelog 2020-04-19 15:55:54 +09:00
Rob Young
77f363987a Make TweakScore and CustomScore mutable at the segment level (#807) 
* Make TweakScore and CustomScore mutable

Make TweakScore and CustomScore mutable at the segment level.

Addresses issue #806

* Add example to show tweak_score working for facets
 2020-04-19 15:54:00 +09:00
Paul Masurel
c0be461191 Removing tantivy-fst conf and removing warning. (#813) 2020-04-18 20:19:23 +09:00
dependabot-preview[bot]
1fb562f44a Update fail requirement from 0.3 to 0.4 (#810) 
Updates the requirements on [fail](https://github.com/tikv/fail-rs) to permit the latest version.
- [Release notes](https://github.com/tikv/fail-rs/releases)
- [Changelog](https://github.com/tikv/fail-rs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/tikv/fail-rs/compare/v0.3.0...v0.4.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>
 2020-04-17 07:14:19 +09:00
Rob Young
c591d0e591 Switch fst dependency to git (#808) 
Closes #803

This allows the package to be built without first cloning the
tantivy-search/fst repo into the expected place. This should fix CI.
 2020-04-16 23:05:12 +09:00
Paul Masurel
186d7fc20e Fix build 2020-04-01 09:32:45 +09:00
Paul Masurel
cfbdef5186 Using tantivy-fst version 0.3. 2020-03-31 23:24:54 +09:00
Paul Masurel
d04368b1d4 Closes #788. OR not working when using conjunction by default. (#802) 2020-03-31 21:13:50 +09:00
Chen Xu
b167058028 Fix prefix option for FuzzyTermQuery (#797) 
* Fix prefix option for FuzzyTermQuery

* Update changelog
 2020-03-19 20:19:32 +09:00
Paul Masurel
262957717b unit test fix and use of matches 2020-03-15 00:20:17 +09:00
Paul Masurel
873a808321 Removed itertools (#792) 2020-03-11 18:41:04 +09:00
dependabot-preview[bot]
6fa8f9330e Update base64 requirement from 0.11.0 to 0.12.0 (#791) 
Updates the requirements on [base64](https://github.com/marshallpierce/rust-base64) to permit the latest version.
- [Release notes](https://github.com/marshallpierce/rust-base64/releases)
- [Changelog](https://github.com/marshallpierce/rust-base64/blob/master/RELEASE-NOTES.md)
- [Commits](https://github.com/marshallpierce/rust-base64/compare/v0.11.0...v0.12.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>
 2020-03-11 17:51:22 +09:00
Paul Masurel
b3f0ef0878 Avoid writing a new delete file if there was no actual deletes. (#787) 
When applying the delete operations in the delete queue, it is possible
that there was no new deleted document.

In this case, avoid creating a new delete file, and updating the delete
opstamp.
 2020-03-08 13:04:21 +09:00
Paul Masurel
04304262ba cargo fmt 2020-03-08 09:58:42 +09:00
Paul Masurel
920ced364a Added a method to persist the RAMDirectory into a different directory. 2020-03-07 17:00:50 +09:00
Paul Masurel
e0499118e2 Minor refactoring 2020-03-07 15:56:03 +09:00
Paul Masurel
50b5efae46 Added derive feature to serde crate 2020-03-06 23:46:29 +09:00
Paul Masurel
486b8fa9c5 Removing serde-derive dependency (#786) 2020-03-06 23:33:58 +09:00
Minoru Osuka
b2baed9bdd Add Lindera to README.md (#785) 
* Add Lindera to README.md

* Put lindera in first place
 2020-03-03 20:23:59 +09:00
Paul Masurel
b591542c0b Removing err.description() before deprecation. 2020-03-03 09:58:49 +09:00
Paul Masurel
a83fa00ac4 Faster compilation of query-grammar. (#784) 2020-03-02 22:12:42 +09:00
Paul Masurel
7ff5c7c797 Removing the fst feature in the levenshtein_automata crate. 2020-03-02 21:47:05 +09:00
Paul Masurel
1748602691 ignore -> compile_fail 2020-03-02 09:59:48 +09:00
Paul Masurel
6542dd5337 Removing parenthesis. 2020-03-01 09:41:53 +09:00
Nicholas Connor
c64a44b9e1 Slight re-organization to increase contrast of "Getting Started" (#783) 2020-02-28 08:42:38 +09:00
Paul Masurel
fccc5b3bed Closes #758 2020-02-27 17:58:43 +09:00
Paul Masurel
98b9d5c6c4 Closes #780. Will be fixed on the next published release. 2020-02-21 09:41:52 +09:00
Paul Masurel
afd2c1a8ad Merge branch 'master' of github.com:tantivy-search/tantivy 2020-02-19 22:08:44 +09:00
Paul Masurel
81f35a3ceb Bumped tantivy-grammar version 2020-02-19 22:08:31 +09:00
Paul Masurel
7e2e765f4a Bumped tantivy-grammar version 2020-02-19 22:07:54 +09:00
Paul Masurel
7d6cfa58e1 [WIP] Alternative take on boosted queries (#772) 
* Alternative take on boosted queries

* Fixing unit test

* Added boosting to the query grammar.

* Made BoostQuery public.

* Added support for boosting field in QueryParser

Closes #547
 2020-02-19 11:04:38 +09:00
Paul Masurel
14735ce3aa Update snap version to 1. (#781) 2020-02-17 10:41:44 +09:00
Paul Masurel
72f7cc1569 Closes #777 (#779) 2020-02-17 09:53:38 +09:00
Paul Masurel
abef5c4e74 Updating combine to version 4 (#775) 2020-02-06 23:02:48 +09:00
Paul Masurel
ae14022bf0 Removed use::Result. (#771) 2020-01-31 18:47:02 +09:00
Alexander
55f5658d40 Make Executor public so Searcher::search_in_executor method now can be used (#769) 
* Make Executor public so Searcher::search_in_executor method now can be used

* Fixed cargo fmt
 2020-01-31 15:50:26 +09:00
Paul Masurel
3ae6363462 Updated CHANGELOG 2020-01-30 10:16:56 +09:00
Halvor Fladsrud Bø
9e20d7f8a5 Maximum size of segment to be considered for merge (#765) 
* Replicated changes from dead PR

* Ran formatter.
 2020-01-30 10:14:34 +09:00
Halvor Fladsrud Bø
ab13ffe377 Facet path string (#759) 
* Added to_path_string

* Fixed logic. Found strange behavior with string comparisons.

* ran formatter

* Fixed test

* Fixed format

* Fixed comment
 2020-01-30 10:11:29 +09:00
Paul Masurel
039138ed50 Added the empty dictionary item in the CHANGELOG 2020-01-30 10:10:34 +09:00
Paul Masurel
6227a0555a Added unit test for empty dictionaries. 2020-01-30 10:08:27 +09:00
Audun Halland
f85d0a522a Optimize TermDictionary::empty by precomputed data source (#767) 2020-01-30 10:04:58 +09:00
Halvor Fladsrud Bø
5795488ba7 Backward iteration for termdict range (#757) 
* Added backwards iteration to termdict

* Ran formatter

* Updated fst dependency

* Updated dependency

* Changelog and version

* Fixed version

* Made it part of 12.0
 2020-01-30 09:59:21 +09:00
Paul Masurel
c3045dfb5c Remove time dev-deps by relying on chrono::Duration reexport. 2020-01-29 23:25:03 +09:00
Paul Masurel
811fd0cb9e Dynamic analyzer (#755) 
* Removed generics in tokenizers

* lowercaser

* Added TokenizerExt

* Introducing BoxedTokenizer

* Introducing BoxXXXXX helper struct

* Closes #762.

* Introducing a TextAnalyzer
 2020-01-29 18:23:37 +09:00
dependabot-preview[bot]
f6847c46d7 Update tantivy-fst requirement from 0.1 to 0.2 (#750) 
Updates the requirements on [tantivy-fst](https://github.com/tantivy-search/fst) to permit the latest version.
- [Release notes](https://github.com/tantivy-search/fst/releases)
- [Commits](https://github.com/tantivy-search/fst/compare/0.1.1...0.2.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
 2020-01-21 07:57:39 +09:00
Paul Masurel
92dac7af5c Return an error instead of panicking when sorting by a non fast field. (#748) 
Closes #747
 2020-01-08 13:41:02 +09:00
Paul Masurel
801905d77f Davide romanini arm atomic mutex (#746) 
* Add atomic mutex implementation for ARM.

* Applied rustfmt.

* rustfmt

Co-authored-by: davide-romanini <davide.romanini@gmail.com>
 2019-12-30 23:42:11 +09:00
Paul Horn
8f5ac86f30 Expose UserOperation as a public type. (#744) 
In order to make `IndexWriter::run` callable from outside of the create,
the `UserOperation` type needs to be publicly available.
Since the `indexer` module is private, we just export the `UserOperation`
type directly.
 2019-12-29 22:37:13 +09:00
Paul Masurel
d12a06b65b Tiny code simplification. 2019-12-26 09:33:17 +09:00
Minoru Osuka
749432f949 Make SchemaBuilder::add_field() public (#742) 
* Make add_field() to public

* cargo format
 2019-12-25 20:37:34 +09:00
Paul Masurel
c1400f25a7 Handle facet search in the QueryParser. (#741) 
Closes #738
 2019-12-25 17:43:33 +09:00
Paul Masurel
87120acf7c Bump version 2019-12-20 21:22:43 +09:00
Paul Masurel
401f74f7ae Implement fast field for DateTime. (#736) 2019-12-20 21:20:15 +09:00
Paul Masurel
03d31f6713 Update CHANGELOG 2019-12-19 10:07:43 +09:00
Paul Masurel
a57faf07f6 Added a constructor for WatchHandle (#734) 
Closes #731
 2019-12-19 10:06:02 +09:00
Paul Masurel
562ea9a839 Merge branch 'master' of github.com:tantivy-search/tantivy 2019-12-19 09:32:50 +09:00
Paul Masurel
cf92cc1ada Closes #732 (#733) 
The future returned by `IndexWriter::merge` does not borrow `&mut self`
 2019-12-18 23:25:22 +09:00
Paul Masurel
f6000aece7 Closes #732 
The future returned by `IndexWriter::merge` does not borrow `&mut self`
 2019-12-18 21:48:51 +09:00
Paul Masurel
2b3fe3a2b5 Bumped version for hotfix 2019-12-17 21:10:50 +09:00
Paul Masurel
0fde90faac Closes #729 (#730) 
Bug related with merge and deletes...
 2019-12-17 21:09:08 +09:00
Paul Masurel
5838644b03 Added README in tantivy-query-grammar 2019-12-16 08:41:21 +09:00
Paul Masurel
c0011edd05 Added version for tantivy-grammar before publish 2019-12-16 08:35:17 +09:00
petr-tik
431c187a60 Make error handling richer in Footer::is_compatible (#724) 
* WIP implemented is_compatible

hide Footer::from_bytes from public consumption - only found Footer::extract
used outside the module

Add a new error type for IncompatibleIndex
add a prototypical call to footer.is_compatible() in ManagedDirectory::open_read
to make sure we error before reading it further

* Make error handling more ergonomic

Add an error subtype for OpenReadError and converters to TantivyError

* Remove an unnecessary assert

it's follower by the same check that Errors instead of panicking

* Correct the compatibility check logic

Leave a defensive versioned footer check to make sure we add new logic handling
when we add possible footer versions

Restricted VersionedFooter::from_bytes to be used inside the crate only

remove a half-baked test

* WIP.

* Return an error if index incompatible - closes #662

Enrich the error type with incompatibility

Change return type to Result<bool, TantivyError>, instead of bool

Add an Incompatibility enum that enriches the IncompatibleIndex error variant
with information, which then allows us to generate a developer-friendly hint how
to upgrade library version or switch feature flags for a different compression
algorithm

Updated changelog

Change the signature of is_compatible

Added documentation to the Incompatibility
Added a conditional test on a Footer with lz4 erroring
 2019-12-14 09:14:33 +09:00
Caio Romão
392abec420 Make u64_lenient() handle f64 fast fields too (#726) 
* Make u64_lenient() handle f64 fast fields too

Without this, we get a panic during merge since the merger will
get a `None` where it expects something.

Prior to this patch, you can reproduce the panic with:

    use tantivy::{
        self,
        schema::{SchemaBuilder, FAST},
        Document, Index, Result,
    };

    #[test]
    fn pass() -> Result<()> {
        let mut builder = SchemaBuilder::new();
        let field = builder.add_f64_field("f64", FAST);
        let index = Index::create_in_ram(builder.build());

        let mut writer = index.writer_with_num_threads(1, 50_000_000)?;

        for i in 0..1000 {
            let mut doc = Document::new();
            doc.add_f64(field, 0.42);
            writer.add_document(doc);

            if i % 5 == 0 {
                writer.commit()?;
            }
        }

        writer.commit()?;

        Ok(())
    }

* Add test to verify that f64 fields are merged

* Ensure multi-valued fast fields can be merged too
 2019-12-13 23:41:22 +09:00
Paul Masurel
dfbe337fe2 Optimize deletes (#723) 
Closes #710
 2019-12-13 09:50:00 +09:00
Paul Masurel
b9896c4962 Cleanup 2019-12-10 23:01:07 +09:00
Paul Masurel
afa5715e56 Added unit test. 2019-12-10 22:49:32 +09:00
Paul Masurel
79474288d0 Some clippy minor fixes (#722) 2019-12-09 13:40:04 +09:00
Paul Masurel
daf64487b4 Fixing JSON se/deserialization of dates. (#721) 
Closes #719
 2019-12-09 13:31:35 +09:00
Ximo Guanter
00816f5529 Fix outdated reference in documentation (#720) 2019-12-08 18:10:50 +09:00
Paul Masurel
f73787e6e5 Merge branch 'master' of github.com:tantivy-search/tantivy 2019-12-06 10:06:09 +09:00
Paul Masurel
5cffa71467 Using census 0.4 2019-12-06 10:04:01 +09:00
Christian Hunstad
02af28b3b7 add norwegian stemmer (#717) 2019-11-27 21:08:59 +09:00
Paul Masurel
afe0134d0f Kkoziara remove tokens from doc store (#715) 
* Prevent tokens from being stored in the document store.

Commit adds prepare_for_store method to Document, which changes all
PreTokenizedString values into String values. The method is called
before adding document to the document store to prevent tokens from
being saved there. Commit also adds small changes to comments in
pre_tokenized_text example.

* Avoid storing the pretokenized text.
 2019-11-25 22:39:12 +09:00
Christian Hunstad
db9e81d0f9 Updated rust-stemmers version to 1.2 (#716) 
* Updated rust-stemmers version to 1.2

* 1.2.0 -> 1.2
 2019-11-25 22:38:48 +09:00
Paul Masurel
3821f57ecc Closes #712 (#714) 
Fixing the memory leak in the DeleteQueue.
 2019-11-25 15:57:29 +09:00
Paul Masurel
d379f98b22 Waiting for indexing threads when dropping IndexWriter 2019-11-23 15:00:27 +09:00
Paul Masurel
ef3eddf3da clippy first stab (#711) 2019-11-22 13:09:35 +09:00
Paul Masurel
08a2368845 Closes #708 (#709) 
Fixes a race condition in the test.
 2019-11-21 11:41:59 +09:00
Paul Masurel
1868fc1e2c Text fix 2019-11-20 23:00:39 +09:00
Paul Masurel
451a0252ab thread pool merge (#704) 2019-11-20 21:18:05 +09:00
Paul Masurel
42756c7474 Removing futures-cpupool and upgrading to futures-0.3 2019-11-15 18:35:31 +09:00
Paul Masurel
598b076240 Making some of the IndexWriter's method public. 2019-11-11 12:41:45 +09:00
Paul Masurel
f1f96fc417 Updating some doc. 2019-11-11 10:04:12 +09:00
Paul Masurel
9c941603f5 Petr tik n662 errror incompatible footer version (#696) 
* code tidy-up

Replace `20` magic constant with COMMON_FOOTER_SIZE

Add a docstring showing how footer is serialised
Add a test for footer length checking

* Add more tests for VersionedFooter

successful and panicking .to_bytes() calls

* Minor changes in footer.rs
 2019-11-10 14:40:06 +09:00
Paul Masurel
fb3d6fa332 Adding Value::From<PretokenizedText> (#697) 2019-11-10 14:39:44 +09:00
Paul Masurel
88fd7f091a SegmentUpdater.add_segment does not need to return true (#693) 2019-11-09 21:18:51 +09:00
Jacob Brown
6e4fdfd4bf replace scoped_pool (#685) 2019-11-07 10:26:08 +09:00
kkoziara
0519056bd8 Added handling of pre-tokenized text fields (#642). (#669) 
* Added handling of pre-tokenized text fields (#642).

* * Updated changelog and examples concerning #642.
* Added tokenized_text method to Value implementation.
* Implemented From<TokenizedString> for TokenizedStream.

* * Removed tokenized flag from TextOptions and code reliance on the flag.
* Changed naming to use word "pre-tokenized" instead of "tokenized".
* Updated example code.
* Fixed comments.

* Minor code refactoring. Test improvements.
 2019-11-07 10:10:56 +09:00
dependabot-preview[bot]
7305ad575e Update smallvec requirement from 0.6 to 1.0 (#686) 
Updates the requirements on [smallvec](https://github.com/servo/rust-smallvec) to permit the latest version.
- [Release notes](https://github.com/servo/rust-smallvec/releases)
- [Commits](https://github.com/servo/rust-smallvec/compare/v0.6.0...v1.0.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
 2019-11-07 09:55:33 +09:00
Paul Masurel
79f64ac2f4 Create FUNDING.yml 2019-11-05 16:26:12 +09:00
Paul Masurel
67bce6cbf2 Fixing the construction of the DeleteBitset. (#683) 
Closes #681
 2019-11-04 15:39:11 +09:00
xiaoniu-578fa6bff964d005
e5316a4388 Reduce unnecessary clone. (#684) 2019-11-04 13:57:59 +09:00
Mathias Svensson
6a8a8557d2 Use slice::iter instead of into_iter to avoid future breakage (#679) 
* Use `slice::iter` instead of `into_iter` to avoid future breakage

`an_array.into_iter()` currently just works because of the autoref
feature, which then calls `<[T] as IntoIterator>::into_iter`. But
in the future, arrays will implement `IntoIterator`, too. In order
to avoid problems in the future, the call is replaced by `iter()`
which is shorter and more explicit.

* cargo fmt
 2019-10-31 20:59:50 +09:00
Alberto Piai
3a65dc84c8 TopDocs: ensure stable sorting on equal score (#675) 
* TopDocs: ensure stable sorting on equal score

When selecting the top K documents by score, we need to ensure stable
sorting. Until now, for documents with the same score, we were relying
on the (arbitrary) order returned by the BinaryHeap used to implement
the collectors.

This patch fixes the problem by explicitly using the doc address when
harvesting the `TopSegmentCollector` and when merging the results in
`TopCollector::merge_fruits()`.

This is important (for example) to implement pagination correctly using
the TopDocs collector. If sorting isn't stable, documents that have the
same score might be ranked in different positions depending on the
specific K that was used, thus appearing in two different pages, or in
none at all.

Fixes gh-671

* TMP: alternative solution (see previous commit)

If we add the constrait that D is also PartialOrd in ComparableDoc<T,
D>, then we can move the comparison by doc address directly in the cmp
implementation of ComparableDoc.

* TMP rebase as first commit: add benchmarks for TopSegmentCollector

* fixup! TMP: alternative solution (see previous commit)

* TMP add changelog entry

* TMP run cargo fmt
 2019-10-26 15:27:25 +09:00
dependabot-preview[bot]
ce42bbf5c9 Update base64 requirement from 0.10.0 to 0.11.0 (#676) 
Updates the requirements on [base64](https://github.com/marshallpierce/rust-base64) to permit the latest version.
- [Release notes](https://github.com/marshallpierce/rust-base64/releases)
- [Changelog](https://github.com/marshallpierce/rust-base64/blob/master/RELEASE-NOTES.md)
- [Commits](https://github.com/marshallpierce/rust-base64/compare/v0.10.0...v0.11.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
 2019-10-26 15:24:47 +09:00
Paul Masurel
7b21b3f25a Refactoring around Field (#673) 
* Refactoring around Field

Removing the contract about the order of the field, and the
field id allocation.

* Update delete_queue.rs

* Update field.rs
 2019-10-25 09:06:44 +09:00
Paul Masurel
46caec1040 Updating uuid to 0.8 (#674) 2019-10-25 09:02:00 +09:00
petr-tik
1187a02a3e Fixed #664 (#667) 
Removed references to u8 and old documentation
 2019-10-22 09:34:10 +09:00
Andrew Banchich
f6c525b19e Fix grammar / punctuation (#668) 2019-10-21 10:50:53 +09:00
petr-tik
4a8f7712f3 Add a doctest to BooleanQuery (#630) 
* Add a doctest to BooleanQuery

Closes #446

Mark a function that is only used in tests to be compiled for tests only

Fix doc-comments in a couple of related files

* Minor corrections

remove whitespace, fix typos, add explicit dyn marker

* WIP: BooleanQuery doc test

Trying to nest several BooleanQueries together

* Addressed old review

rust 2018 edition + make function available to everyone

* Box the previous query to resolve the type error

* Rework wording in DocAdress document strings

* Reworded and restructured the docstring
 2019-10-07 10:05:12 +09:00
Paul Masurel
2f867aad17 Fix bench (#663) 
* fmt

* Fixing bench compilation
 2019-10-04 17:07:49 +09:00
Paul Masurel
5c6580eb15 fmt (#661) 2019-10-04 12:10:01 +09:00
Paul Masurel
4c3941750b Waiting potentially longer on watch 2019-10-01 09:50:46 +09:00
Paul Masurel
2ea8e618f2 Merge branch 'hotfix-656' 2019-10-01 09:44:56 +09:00
Paul Masurel
94f27f990b Address #656 
Broke the reference loop to make sure that the watch_router can
be dropped, and the thread exits.
 2019-10-01 09:34:22 +09:00
Paul Masurel
349e8aa348 Removed enum variants on type alias 2019-09-26 18:43:29 +09:00
Paul Masurel
cde9b78b8d Fixing the issue associated with the Regex performance change 2019-09-18 18:29:27 +09:00
fdb-hiroshima
d8894f0bd2 add checksum check in ManagedDirectory (#605) 
* add checksum check in ManagedDirectory

fix #400

* flush after writing checksum

* don't checksum atomic file access and clone managed_paths

* implement a footer storing metadata about a file

this is more of a poc, it require some refactoring into multiple files
`terminate(self)` is implemented, but not used anywhere yet

* address comments and simplify things with new contract

use BitOrder for integer to raw byte conversion
consider atomic write imply atomic read, which might not actually be true
use some indirection to have a boxable terminating writer

* implement TerminatingWrite and make terminate() be called where it should

add dependancy to drop_bomb to help find where terminate() should be called
implement TerminatingWrite for wrapper writers
make tests pass
/!\ some tests seems to pass where they shouldn't

* remove usage of drop_bomb

* fmt

* add test for checksum

* address some review comments

* update changelog

* fmt
 2019-09-18 18:26:25 +09:00
fdb-hiroshima
7e08e0047b fix Term documentation (#655) 
u64-based fields are actually 4+8=12 bytes long
 2019-09-11 18:49:35 +09:00
fdb-hiroshima
1a817f117f fix documentation error (#654) 
Union missdocumented as doing an intersection
Union and Intersection can hold more than 2 DocSets
 2019-09-11 17:12:08 +09:00
petr-tik
2ec19b21ae Remove unnecessary duplicate methods (#650) 
Closes #649

Spotted by @imor
 2019-09-09 06:36:04 +09:00
Raminder Singh
141f5a93f7 Using FnvHashMap for mapping UnorderedTermId to TermOrdinal. Fixes #507 (#647) 
* Using FnvHashMap for mapping UnorderedTermId to TermOrdinal. Fixes #507

* Fixed cargo fmt errors
 2019-09-07 19:40:21 +09:00
Paul Masurel
df47d55cd2 Occur debug interface (#648) 2019-09-07 15:08:45 +09:00
Raminder Singh
5e579fd6b7 Fixed clippy warning: unneeded return statement (#646) 2019-09-07 10:14:37 +09:00
Paul Masurel
4b9c1dce69 Moving queyr grammar to a different crate. (#645) 2019-09-05 09:37:28 +09:00
Paul Masurel
d74f71bbef Lighter regex dependency. (#644) 
Detail on https://github.com/rust-lang/regex/pull/613
 2019-09-04 13:10:12 +09:00
Paul Masurel
5196ca41d8 Small code clean up 2019-09-03 09:22:32 +09:00
dependabot-preview[bot]
4959e06151 Update once_cell requirement from 0.2 to 1.0 (#643) 
Updates the requirements on [once_cell](https://github.com/matklad/once_cell) to permit the latest version.
- [Release notes](https://github.com/matklad/once_cell/releases)
- [Changelog](https://github.com/matklad/once_cell/blob/master/CHANGELOG.md)
- [Commits](https://github.com/matklad/once_cell/compare/v0.2.0...v1.0.2)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
 2019-09-03 07:00:45 +09:00
Paul Masurel
c1635c13f6 RegexQuery performance: make it possible to cache Regexes - remastered by fulmicoton (Closes #639) (#641) 
* small docs cleanup

* only compile a regex once per RegexQuery

Building a `Regex` is an expensive operation. Users of `RegexQuery`
need to cache and reuse regexes when searching across multiple fields.

This is the first step towards allowing that: we can store the `Regex`
directly in the `RegexQuery`, instead of the string pattern.

* RegexQuery: account for possible failure in the constructor

When building a regex from a str pattern, we have to account for the
possibility that the pattern is invalid. Before the previous commit, the
failure would happen in the `specialized_weight` method. Now that we
store a compiled `Regex` in `RegexQuery`, `specialized_weight` doesn't
fail anymore, and we can fail early while constructing `RegexQuery` if
the pattern is invalid.

This is a breaking change for users of `RegexQuery::new`.

* add RegexQuery::from_regex method

This builds a `RegexQuery` from an already compiled `Regex`. The use of
`Into<Arc<Regex>>` is to allow the caller to either simply pass a
`Regex`, or an `Arc<Regex>`, in case it needs to be cached and shared on
the caller's side.

* Using an Arc in AutomatonWeight

Closes #639
 2019-08-22 16:14:01 +09:00
Paul Masurel
135e0ea2e9 Expose new segment meta from Index (#637) 2019-08-19 10:39:15 +09:00
Paul Masurel
f283bfd7ab Added segmentid_from_string (#636) 2019-08-19 10:37:30 +09:00
Joshua Dutton
9f74786db2 Update import statements in examples, doctests (#633) 
Update import statements to edition 2018, including removing
`extern crate` and  `#[macro_use]`. Alphabetize the statements.
 2019-08-19 07:26:35 +09:00
Joshua Dutton
32e5d7a0c7 Fix trait object in doctest (#635) 2019-08-19 07:25:00 +09:00
Joshua Dutton
84c615cff1 Fixing typos (#634) 2019-08-19 07:24:05 +09:00
Paul Masurel
039c0a0863 Introducing a wrapper struct instead of Boxed<BoxableTokenizer> (#631) 
Closes #629
 2019-08-15 16:37:04 +09:00
Paul Masurel
b3b0138b82 Change for tantivy-py 
Schema.convert_named_doc
Better Debug string for Terms and TermQueries
 2019-08-14 17:44:25 +09:00
petr-tik
ea56160cdc Added cargo-fmt to CI runs (#627) 
* Added cargo-fmt to CI runs

Closes #625

* Remove fmt from appveyor builds

Windows seems to have issues with install components through rustup.

Formatting should be equally informative regardless of the OS,
so best to keep it in Linux on Travis
 2019-08-12 08:25:47 +09:00
petr-tik
028b0a749c Elastic unbounded range query (#624) 
* Tidy up

fmt

remove unneccessary -> Result<()> followed by run.unwrap() in a test

* Adding support for elasticsearch-style unbounded queries

Extend the UserInputBound to include Unbounded, so we can reuse formatting and
internal query format

* Still working on elastic-style range queries

Fixes #498

Merge the elastic_range into range

Reformat to make code easier to follow, use optional() macro to return Some

* Fixed bugs

Made the range parser insensitive to whitespace between the ":" and the range.

Removed optional parsing of field.

Added a unit test for the range parser.

Derived PartialEq to compare the results of parsing as structs, instead of
strings. Found a bug with that unit test - "*}" was parsed as an
UserInputBound::Exclusive, instead of UserInputBound::Unbounded. Added an early
detection-and-return for * in the original range parser

* Correct failing test

Assume that we will use "{*" for Unbounded ranges

* Add a note in the changelog

cargo-fmt

* Moved parenthesis to a newline to make nested if-else more visible
 2019-08-12 08:24:47 +09:00
Paul Masurel
941f06eb9f Added Schema.from_named_doc 2019-08-11 16:50:32 +09:00
Paul Masurel
04832a86eb WTF is this file doing here (#622) 2019-08-08 21:54:10 +09:00
fdb-hiroshima
beb8e990cd fix parsing neg float in range query (#621) 
fix #620
 2019-08-08 20:41:04 +09:00
Paul Masurel
001af3876f cargo fmt 2019-08-08 18:07:19 +09:00
Paul Masurel
f428f344da Various bugfix in the query parser (#619) 2019-08-08 17:48:21 +09:00
Paul Masurel
143f78eced Trying to fix #609 (#616) 2019-08-06 20:33:30 +09:00
Kornel
754b55eee5 Bump deps (#613) 
* Bump crossbeam

* Warnings--

* Remove outdated tempdir
 2019-08-05 22:21:22 +09:00
Paul Masurel
280ea1209c Changes required for python binding (#610) 2019-08-01 17:26:21 +09:00
petr-tik
0154dbe477 Replace unwrap with match and proper Error handling (#606) 
* Replace unwrap with match and proper Error handling

* Replaced 'magic' values with a documented variable

Didn't like the unexplained 0..3 range, thought it was best as a variable

Calculating Levenshtein distance is expensive, so best explain why we should
keep it low
 2019-07-31 08:16:02 +09:00
Paul Masurel
efd1af1325 Closes #544. (#607) 
Prepare for release 0.10.1
 2019-07-30 13:38:06 +09:00
fdb-hiroshima
c91eb7fba7 add to_path for Facet (#604) 
fix #580
 2019-07-27 17:58:43 +09:00
fdb-hiroshima
6eb4e08636 add support for float (#603) 
* add basic support for float

as for i64, they are mapped to u64 for indexing
query parser don't work yet

* Update value.rs

* implement support for float in query parser

* Update README.md
 2019-07-27 17:57:33 +09:00
Paul Masurel
c3231ca252 Added phrase query tests (#601) 2019-07-22 13:43:00 +09:00
Paul Masurel
7211df6719 Failrs (#600) 
* Single thread tests

* Isolating fail tests into a different binary
 2019-07-22 13:17:21 +09:00
Paul Masurel
f27ce6412c Made the SegmentMeta inventory out of static. 2019-07-21 10:38:00 +09:00
Paul Masurel
8197a9921f Small code cleaning 2019-07-20 07:10:12 +09:00
Paul Masurel
b0e23b5715 Merge branch 'master' of github.com:tantivy-search/tantivy 2019-07-18 10:16:49 +09:00
Paul Masurel
0167151f5b Disabling generating docs 2019-07-18 10:16:29 +09:00
Paul Masurel
0668949390 Disabling generating docs 2019-07-18 09:36:57 +09:00
Paul Masurel
94d0e52786 Using instead of u64. 2019-07-17 22:02:47 +09:00
Paul Masurel
818a0abbee Small refactoring 2019-07-17 21:55:59 +09:00
Luca Bruno
4e6dcf3cbe cargo: update to fail 0.3 (#593) 
* cargo: update to fail 0.3

* tantivy: align failpoints feature naming

This aligns feature naming to use `failpoints` everywhere, like the
underlying library.
 2019-07-17 18:51:38 +09:00
Paul Masurel
af7ea1422a using smallvec for operation batches (#599) 2019-07-17 13:20:02 +09:00
Paul Masurel
498057c5b7 Refactor deletes (#597) 
* Refactor deletes

* Removing generation from SegmentUpdater. These have been obsolete for a long time

* Number literal clippy

* Removed clippy useless allow statement
 2019-07-17 13:06:44 +09:00
Paul Masurel
5095e6b010 Introduce a small refactoring of the sgment writer. (#596) 2019-07-17 08:32:29 +09:00
Paul Masurel
1aebc87ee3 disabling caching (#595) 2019-07-16 19:05:22 +09:00
Paul Masurel
9fb5058b29 Fixed links (#592) 
Closes #591
 2019-07-15 19:35:44 +09:00
Paul Masurel
158e0a28ba Removed ilnk to master reference doc 2019-07-15 15:18:53 +09:00
Paul Masurel
3576a006f7 Updated example link 2019-07-15 15:17:53 +09:00
Paul Masurel
80c25ae9f3 Release 0.10 2019-07-11 19:10:12 +09:00
Paul Masurel
4867be3d3b Kompass master (#590) 
* Use once_cell in place of lazy_static

* Minor changes
 2019-07-10 19:24:54 +09:00
Paul Masurel
697c7e721d Only compile bitpacker4x (#589) 2019-07-10 18:53:46 +09:00
Paul Masurel
3e368d92cb Issue/479 (#578) 
* Sort by field relying on tweaked score
* Sort by u64/i64 get independent methods.
 2019-07-07 17:12:31 +09:00
Paul Masurel
0bc2c64a53 2018 (#585) 
* removing macro import for fail-rs

* Downcast-rs

* matches
 2019-07-07 17:09:04 +09:00
Paul Masurel
35236c8634 Seek not required in Directory's write anymore (#584) 2019-07-03 10:12:33 +09:00
Paul Masurel
462774b15c Tiqb feature/2018 (#583) 
* rust 2018

* Added CHANGELOG comment
 2019-07-01 10:01:46 +09:00
Paul Masurel
185a5b8d31 updating rand (#582) 2019-06-29 13:11:42 +09:00
petr-tik
73d7791479 Add instructions for contributors (#574) 2019-06-27 09:59:07 +09:00
Kirill Zaborsky
f52b1e68d1 Fix typo (#573) 2019-06-27 09:57:37 +09:00
Paul Masurel
3e0907fe05 Fixed CHANGELOG and disable one test on windows (#577) 2019-06-27 09:48:53 +09:00
dependabot-preview[bot]
ab4a8916d3 Update bitpacking requirement from 0.6 to 0.7 (#575) 
Updates the requirements on bitpacking to permit the latest version.

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
 2019-06-27 09:39:26 +09:00
Antoine Catton
bcd7386fc5 Add crates.io shield to the README (#572) 2019-06-18 11:19:06 +09:00
Paul Masurel
c23a7c992b Closes #552 (#570) 
The different handles to `SegmentMeta` are closed before calling gc on
end_merge.
 2019-06-16 14:12:13 +09:00
Paul Masurel
2a88094ec4 Disabling travis on OSX (#571) 2019-06-16 14:12:01 +09:00
Paul Masurel
ca3cfddab4 adding cond (#568) 2019-06-16 11:59:26 +09:00
Paul Masurel
7bd9f9773b trying to fix doc upload (#567) 2019-06-16 11:22:51 +09:00
Paul Masurel
e2da92fcb5 Petr tik n510 clear index (#566) 
* Enables clearing the index

Closes #510

* Adds an examples to clear and rebuild index

* Addressing code review

Moved the example from examples/ to docstring above `clear`

* Corrected minor typos and missed/duplicate words

* Added stamper.revert method to be used for rollback

Added type alias for Opstamp

Moved to AtomicU64 on stable rust (since 1.34)

* Change the method name and doc-string

* Remove rollback from delete_all_documents

test_add_then_delete_all_documents fails with --test-threads 2

* Passes all the tests with any number of test-threads

(ran locally 5 times)

* Addressed code review

Deleted comments with debug info
changed ReloadPolicy to Manual

* Removing useless garbage_collect call and updated CHANGELOG
 2019-06-12 09:40:03 +09:00
petr-tik
876e1451c4 Resume uploading docs to gh-pages (#565) 
* Fixes #546

Generate docs and upload them. Need GH_TOKEN env var to be set in travis settings

* Investigate what TRAVIS* env vars are set
 2019-06-12 09:30:09 +09:00
dependabot-preview[bot]
a37d2f9777 Update winapi requirement from 0.2 to 0.3 (#537) 
* Update winapi requirement from 0.2 to 0.3

Updates the requirements on [winapi](https://github.com/retep998/winapi-rs) to permit the latest version.
- [Release notes](https://github.com/retep998/winapi-rs/releases)
- [Commits](https://github.com/retep998/winapi-rs/commits/0.3.7)

Signed-off-by: dependabot[bot] <support@dependabot.com>

* Fixing upgrading winapi (hopefully).
 2019-06-06 10:23:13 +09:00
Paul Masurel
4822940b19 Issue/36 (#559) 
* Added explanation

* Explain

* Splitting weight and idf

* Added comments

Closes #36
 2019-06-06 10:03:54 +09:00
Paul Masurel
d590f4c6b0 Comments for IndexMeta (#560) 2019-06-06 09:24:31 +09:00
Paul Masurel
edfa619519 Update .travis.yml 2019-05-29 16:45:56 +09:00
Paul Masurel
96f194635f Trying to address #546 2019-05-29 09:17:41 +09:00
Paul Masurel
444662485f Remove mut in add_document and delete_term. Made stamper ordering rel… (#551) 
* Remove mut in add_document and delete_term. Made stamper ordering relaxed.

* Made batch operations &mut self -> &self

* Added example
 2019-05-28 10:26:00 +09:00
Stephen Carman
943c25d0f8 Make IndexMeta public (#553) 2019-05-28 09:27:49 +09:00
Paul Masurel
5c0b2a4579 Merge branch 'stamper_refactor' 2019-05-08 10:02:02 +09:00
Paul Masurel
9870a9258d Removed the mutex implementation of AtomicU64. 
Fixed comment
 2019-05-08 09:59:28 +09:00
Paul Masurel
7102b363f5 Fix build 2019-05-05 14:19:54 +09:00
Paul Masurel
66b4615e4e Issue/542 (#543) 
* Closes 542.

Fast fields are all loaded when the segment reader is created.
 2019-05-05 13:52:43 +09:00
petr-tik
da46913839 Merge branch 'master' into stamper_refactor 2019-04-30 22:28:48 +01:00
Paul Masurel
3df037961f Added more info to fast fields. 2019-04-30 13:14:01 +09:00
petr-tik
8ffae47854 Addressed code review 
moved Opstamp to top-level namespace, added a docstring

Corrected minor typos/whitespace
 2019-04-29 21:23:28 +01:00
petr-tik
1a90a1f3b0 Merge branch 'master' of github.com:tantivy-search/tantivy into stamper_refactor 2019-04-26 08:47:12 +01:00
Paul Masurel
dac50c6aeb Dds merged (#539) 
* add ascii folding support

* Minor change and added Changelog.

* add additional tests

* Add tests for ascii folding (#533)

* first tests for ascii folding

* use a `RawTokenizer` for tokens using punctuation

* add test for all (?) folding, inspired by Lucene

* Simplification of the unit test code
 2019-04-26 10:25:08 +09:00
Paul Masurel
31b22c5acc Added logging when token is dropped. (#538) 2019-04-26 09:23:28 +09:00
petr-tik
8e50921363 Tidied up the Stamper module and upgraded to a 1.34 dependency 
Added stamper.revert method to be used for rollback - rolling back to a previous
commit in case of deleting all documents or rolling operations back should reset
the stamper as well

Added type alias for Opstamp - helps code readibility instead of seeing u64
returned by functions.

Moved to AtomicU64 on stable rust (since 1.34) - where possible use standard
library interfaces.
 2019-04-24 20:46:28 +01:00
Paul Masurel
96a4f503ec Closes #526 (#535) 2019-04-24 20:59:48 +09:00
Paul Masurel
9df288b0c9 Merge branch 'master' of github.com:tantivy-search/tantivy 2019-04-24 12:31:47 +09:00
Paul Masurel
b7c2d0de97 Clippy2 (#534) 
* Clippy comments

Clippy complaints that about the cast of &[u32] to a *const __m128i,
because of the lack of alignment constraints.

This commit passes the OutputBuffer object (which enforces proper
    alignment) instead of `&[u32]`.

* Clippy. Block alignment

* Code simplification

* Added comment. Code simplification

* Removed the extraneous freq block len hack.
 2019-04-24 12:31:32 +09:00
Paul Masurel
62445e0ec8 Merge branch 'master' of github.com:tantivy-search/tantivy 2019-04-23 09:55:55 +09:00
Paul Masurel
a228825462 Clippy comments (#532) 
Clippy complaints that about the cast of &[u32] to a *const __m128i,
because of the lack of alignment constraints.

This commit passes the OutputBuffer object (which enforces proper
    alignment) instead of `&[u32]`.
 2019-04-23 09:54:02 +09:00
Paul Masurel
d3eabd14bc Clippy comments 
Clippy complaints that about the cast of &[u32] to a *const __m128i,
because of the lack of alignment constraints.

This commit passes the OutputBuffer object (which enforces proper
    alignment) instead of `&[u32]`.
 2019-04-22 11:16:21 +09:00
petr-tik
c967031d21 Delete files from target/ dir to avoid caching them on CI (#531) 
* Delete files from target/ dir to avoid caching them on CI

idea from here https://github.com/rust-lang/cargo/issues/5885#issuecomment-432723546

* Delete examples
 2019-04-21 08:02:27 +09:00
Paul Masurel
d823163d52 Closes #527. (#529) 
Fixing the bug that affects the result of `query.count()` in presence of
deletes.
 2019-04-19 09:19:50 +09:00
Paul Masurel
c4f59f202d Bumped combine version 2019-04-11 08:33:56 +09:00
Paul Masurel
acd29b535d Fix comment 2019-04-02 10:05:14 +09:00
Panagiotis Ktistakis
2cd31bcda2 Fix non english stemmers (#521) 2019-03-27 08:54:16 +09:00
Paul Masurel
99870de55c 0.10.0-dev 2019-03-25 08:58:26 +09:00
Paul Masurel
cad2d91845 Disabled tests for android 2019-03-24 22:58:46 +09:00
Paul Masurel
79f3cd6cf4 Added instructions to update 2019-03-24 09:10:31 +09:00
Paul Masurel
e3abb4481b broken link 2019-03-22 09:58:28 +09:00
Paul Masurel
bfa61d2f2f Added patreon button 2019-03-22 09:51:00 +09:00
Paul Masurel
6c0e621fdb Added bench info in README 2019-03-21 09:35:04 +09:00
Paul Masurel
a8cc5208f1 Linear simd (#519) 
* linear simd search within block
 2019-03-20 22:10:05 +09:00
Paul Masurel
83eb0d0cb7 Disabling tests on Android 2019-03-20 10:24:17 +09:00
Paul Masurel
ee6e273365 cleanup for nodefaultfeatures 2019-03-20 10:04:42 +09:00
Paul Masurel
6ea34b3d53 Fix version 2019-03-20 09:39:24 +09:00
Paul Masurel
22cf1004bd Reenabled test on android 2019-03-20 08:54:52 +09:00
Paul Masurel
5768d93171 Rename try to attempt as try is becoming a keyword in rust 2019-03-20 08:54:19 +09:00
Paul Masurel
663dd89c05 Feature/reader (#517) 
Adding IndexReader to the API. Making it possible to watch for changes.

* Closes #500
 2019-03-20 08:39:22 +09:00
barrotsteindev
a934577168 WIP: date field (#487) 
* initial version, still a work in progress

* remove redudant or

* add chrono::DateTime and index i64

* add more tests

* fix tests

* pass DateTime by ptr

* remove println!

* document query_parser rfc 3339 date support

* added some more docs about implementation to schema.rs

* enforce DateTime is UTC, and re-export chrono

* added DateField to changelog

* fixed conflict

* use INDEXED instead of INT_INDEXED for date fields
 2019-03-15 22:10:37 +09:00
Paul Masurel
94f1885334 Issue/513 (#514) 
* Closes #513

* Clean up and doc

* Updated changelog
 2019-03-07 09:39:30 +09:00
Jonathan Fok kan
2ccfdb97b5 WIP: compiling to wasm (#512) 
* First work to enable compile to wasm

* Added back fst-regex/mmap to mmap feature

* Removed fst-regex. Forced uuid version 0.7.2.
 2019-03-06 10:40:54 +09:00
Paul Masurel
e67883138d Cargo fmt 2019-03-06 10:31:00 +09:00
Paul Masurel
f5c65f1f60 Added comment on the constructor fo TopDocSByField 2019-03-06 10:30:37 +09:00
Mauri de Souza Nunes
ec73a9a284 Remove note about panicking in get_field docs (#503) 
Since get_field rely on calling get on the underlying InnerSchema HashMap
it shouldn't fail if the field was not found, it simply returns None.
 2019-02-28 09:23:00 +09:00
Thomas Schaller
a814a31f1e Remove semicolon from doc! expansion (#509) 2019-02-28 09:20:43 +09:00
Paul Masurel
9acadb3756 Code cleaning 2019-02-26 10:50:36 +09:00
Paul Masurel
774fcecf23 cargo fmt 2019-02-26 10:44:59 +09:00
Paul Masurel
27c9fa6028 Jannickj prove bug with facets (#508) 
* prove bug with facets

* Closing #505

Introduce a term id in the TermHashMap
 2019-02-25 22:33:17 +09:00
Paul Masurel
fdefea9e26 Removed path reference to tantivy-fst 2019-02-23 10:42:44 +09:00
Paul Masurel
b422f9c389 Partially addresses #500 (#502) 
Using `tantivy_fst`. Storing `Weak<Mmap>` in the Mmap cache.
 2019-02-23 10:33:59 +09:00
petr-tik
9451fd5b09 MsQueue to channel (#495) 
* Format

Made the docstring consistent
remove empty line

* Move matches to dev deps

* Replace MsQueue with an unbounded crossbeam-channel

Questions:
queue.push ignores Result return

How to test pop() calls, if they block

* Format

Made the docstring consistent
remove empty line

* Unwrap the Result of queue.pop

* Addressed Paul's review

wrap the Result-returning send call with expect()

implemented the test not to fail after popping from empty queue

removed references to the Michael-Scott Queue

formatted
 2019-02-23 09:06:50 +09:00
Jason Goldberger
788b3803d9 updated changelog (#501) 
* updated changelog

* Update CHANGELOG.md

* Update CHANGELOG.md
 2019-02-19 00:25:18 +09:00
Paul Masurel
5b11228083 Merge branch 'master' of github.com:tantivy-search/tantivy 2019-02-15 08:30:55 +09:00
Paul Masurel
515adff644 Merge branch 'hotfix/0.8.2' 2019-02-15 08:30:27 +09:00
Paul Masurel
e70a45426a 0.8.2 release 
Backporting a fix for non x86_64 platforms
 2019-02-14 09:16:27 +09:00
Jason Goldberger
e14701e9cd Add grouped operations (#493) 
* [WIP] added UserOperation enum, added IndexWriter.run, and added MultiStamp

* removed MultiStamp in favor of std::ops::Range

* changed IndexWriter::run to return u64, Stamper::stamps to return a Range, added tests, and added docs

* changed delete_cursor skipping to use first operation's opstamp vice last. change index_writer test to use 1 thread

* added test for order batch of operations

* added a test comment
 2019-02-14 08:56:01 +09:00
Paul Masurel
45e62d4329 Code simplification and adding comments 2019-02-06 10:05:15 +09:00
petr-tik
76d2b4dab6 Add integer range search example (#490) 
Copied and simplified the example in the range_query mod
 2019-02-05 23:34:06 +01:00
Paul Masurel
04e9606638 simplification of positions 2019-02-05 15:36:13 +01:00
Paul Masurel
a5c57ebbd9 Positions simplification 2019-02-05 14:50:51 +01:00
Paul Masurel
96eaa5bc63 Positions 2019-02-05 14:50:16 +01:00
Paul Masurel
f1d30ab196 fastfield reader fix 2019-02-05 14:10:16 +01:00
Paul Masurel
4507df9255 Closes #461 (#489) 
Multivalued fast field uses `u64` indexes.
 2019-02-04 13:24:00 +01:00
Paul Masurel
e8625548b7 Closes #461 (#488) 
Multivalued fast field uses `u64` indexes.
 2019-02-04 13:20:20 +01:00
Paul Masurel
50ed6fb534 Code cleanup 
Fixed compilation without the mmap directory
 2019-02-05 12:39:30 +01:00
Panagiotis Ktistakis
76609deadf Add Greek stemmer (#486) 2019-02-01 06:30:49 +01:00
Paul Masurel
749e62c40b renamed 2019-01-30 16:29:17 +01:00
Paul Masurel
259ce567d1 Using linear search 2019-01-29 15:59:24 +01:00
Paul Masurel
4c93b096eb Rustfmt 2019-01-29 11:45:30 +01:00
Paul Masurel
6a547b0b5f Issue/483 (#484) 
* Downcast_ref

* fixing unit test
 2019-01-28 11:43:42 +01:00
Paul Masurel
e99d1a2355 Better exponential search 2019-01-29 11:29:17 +01:00
Paul Masurel
c7bddc5fe3 Inlined exponential search 2019-01-28 17:28:07 +01:00
Paul Masurel
7b97dde335 Clippy + cargo fmt 2019-01-28 12:37:55 +01:00
Paul Masurel
644b4bd0a1 Issue/468b (#482) 
* Moving lock to directory/

* added fs2

* doc

* Using fs2 for locking

* Added unit test

* Fixed error message related unit test

* Fixing location of import
 2019-01-27 12:32:21 +01:00
Paul Masurel
bf94fd77db Issue/471 (#481) 
* Closes 471

Removing writing_segments in the segment manager as it is now useless.
Removing the target merged segment id as it is useless as well.

* RAII for tracking which segment is in merge.

Closes #471

* fmt

* Using Inventory::default().
 2019-01-27 12:18:59 +09:00
Paul Masurel
097eaf4aa6 impl Future as a result of merges 2019-01-28 03:56:43 +01:00
Paul Masurel
1fd46c1e9b Clippy 2019-01-28 03:46:23 +01:00
Paul Masurel
2fb219d017 Changelog 2019-01-24 09:12:07 +09:00
Paul Masurel
63b593bd0a Lower RAM usage in tests. 2019-01-24 09:10:38 +09:00
Paul Masurel
286bb75a0c Updated changelog 2019-01-24 09:03:58 +09:00
barrotsteindev
222b7f2580 Tantivy-288 (#472) 
* add unit test

* improved test

* added SegmentManager#remove_empty_segments

* update old tests for new behaviour

* cleaner filter for empty segments

* PR adjustments

* rename x in closures

* simplify assert_eq!(vec.len(), 0)

* wait_merging_threads

* acquire searchers

* add comments to test

* rebased on latest master

* harden test

* fix merger#test_merge_multivalued_int_fields_all_deleted test
 2019-01-24 08:58:56 +09:00
pentlander
5292e78860 Allow stemmers in languages other than English (#473) 
Allow users to create stemmers for languages other than English. Add a
default stemmer for English.
 2019-01-23 22:24:32 +09:00
Paul Masurel
c0cc6aac83 Updated changelog 2019-01-23 22:22:34 +09:00
Paul Masurel
0b0bf59a32 Allow stemmers in languages other than English (#478) 
Allow users to create stemmers for languages other than English. Add a
default stemmer for English.

Closes #478
 2019-01-23 22:21:00 +09:00
Paul Masurel
74f70a5c2c 32bits platforms 2019-01-23 13:21:31 +09:00
Paul Masurel
1acfb2ebb5 cargo fmt 2019-01-23 10:21:39 +09:00
Paul Masurel
4dfd091e67 Bumped version to 0.8.2-dev 2019-01-23 10:20:59 +09:00
Paul Masurel
8eba4ab807 Merge branch 'hotfix-476' 2019-01-23 10:20:33 +09:00
Paul Masurel
5e8e03882b Merge branch 'bug/476' 2019-01-23 10:18:27 +09:00
Paul Masurel
7df3260a15 Version bump 2019-01-23 10:13:18 +09:00
Paul Masurel
176f67a266 Refactoring 2019-01-23 10:06:40 +09:00
Paul Masurel
19babff849 Closes #476 2019-01-23 10:06:39 +09:00
Paul Masurel
bf2576adf9 Added a broken unit test 2019-01-23 10:04:27 +09:00
Paul Masurel
0e8fcd5727 Plastic surgery 2019-01-19 23:13:27 +09:00
Paul Masurel
f745c83bb7 Closes 466. Removing mentions of the chain collector. (#467) 2019-01-16 10:28:19 +09:00
Paul Masurel
ffb16d9103 More efficient indexing (#463) 
* Using unrolled u32 VInt and caching Vec s

* cargo fmt

* Exposing a io::Write in the Expull thing

* expull as a writer. clippy + format

* inline the first block

* simplified -if let Some-

* vint reader iterator

* blop
 2019-01-13 14:51:18 +09:00
Paul Masurel
98ca703daa More efficient indexing (#462) 
* Using unrolled u32 VInt and caching Vec s

* cargo fmt

* Exposing a io::Write in the Expull thing

* expull as a writer. clippy + format

* inline the first block

* simplified -if let Some-

* vint reader iterator
 2019-01-13 14:41:56 +09:00
Paul Masurel
b9d25cda5d Using LittleEndian explicitely 2019-01-08 12:41:58 +09:00
Paul Masurel
beb4289ec2 Less unsafe 2019-01-08 00:48:14 +09:00
Andrew Banchich
bdd72e4683 Update README.md (#459) 
Fix Elasticsearch spelling
 2018-12-27 07:26:49 +09:00
Paul Masurel
45c3cd19be Fixing README: git clone https... 2018-12-26 21:13:33 +09:00
Paul Masurel
b8241c5603 0.8.0 2018-12-26 10:18:34 +09:00
Paul Masurel
a4745151c0 Version to 0.8 2018-12-26 10:11:06 +09:00
Paul Masurel
e2ce326a8c Merge branch 'issue/457' 2018-12-18 10:35:01 +09:00
Paul Masurel
bb21d12a70 Bumping version 2018-12-18 10:14:12 +09:00
Paul Masurel
4565aba62a Added unit test for exponential search 2018-12-18 09:24:31 +09:00
Paul Masurel
545a7ec8dd Closes #457 2018-12-18 09:18:46 +09:00
Paul Masurel
e68775d71c Format and update murmurhash32 version 2018-12-17 19:12:38 +09:00
Paul Masurel
dcc92d287e Facet remove unsafe (#456) 
* Removing some unsafe

* Removing some unsafe (2)

* Remove murmurhash
 2018-12-17 19:08:48 +09:00
Paul Masurel
b48f81c051 Removing unsafe from bitpacking code (#455) 2018-12-17 19:06:37 +09:00
Paul Masurel
a3042e956b Facet remove unsafe (#454) 
* Removing some unsafe

* Removing some unsafe (2)
 2018-12-17 09:31:09 +09:00
dependabot[bot]
1fa10f0a0b Update itertools requirement from 0.7 to 0.8 (#453) 
Updates the requirements on [itertools](https://github.com/bluss/rust-itertools) to permit the latest version.
- [Release notes](https://github.com/bluss/rust-itertools/releases)
- [Commits](https://github.com/bluss/rust-itertools/commits/0.8.0)

Signed-off-by: dependabot[bot] <support@dependabot.com>
 2018-12-17 09:28:36 +09:00
Paul Masurel
279a9eb5e3 Closes #449 (#450) 
Clippy working on stable.
Clippy warnings addressed
 2018-12-10 12:20:59 +09:00
fdb-hiroshima
21a24672d8 Add accessors for Snippet and HighlightSection (#448) 
* Add accessors for Snippet and HighlightSection

And add an example of custom highlighter

* Remove inline(always) and unnecessary empty lines
 2018-12-02 18:00:16 +09:00
dependabot[bot]
a3f1fbaae6 Update scoped-pool requirement from 0.1 to 1.0 (#447) 
Updates the requirements on [scoped-pool](https://github.com/reem/rust-scoped-pool) to permit the latest version.
- [Release notes](https://github.com/reem/rust-scoped-pool/releases)
- [Commits](https://github.com/reem/rust-scoped-pool/commits/1.0.0)

Signed-off-by: dependabot[bot] <support@dependabot.com>
 2018-12-01 13:54:59 +09:00
Paul Masurel
a6e767c877 Cargo fmt 2018-11-30 22:52:45 +09:00
Paul Masurel
6af0488dbe Executor made sorted 2018-11-30 22:52:26 +09:00
Paul Masurel
07d87e154b Collector refactoring and multithreaded search (#437) 
* Split Collector into an overall Collector and a per-segment SegmentCollector. Precursor to cross-segment parallelism, and as a side benefit cleans up any per-segment fields from being Option<T> to just T.

* Attempt to add MultiCollector back

* working. Chained collector is broken though

* Fix chained collector

* Fix test

* Make Weight Send+Sync for parallelization purposes

* Expose parameters of RangeQuery for external usage

* Removed &mut self

* fixing tests

* Restored TestCollectors

* blop

* multicollector working

* chained collector working

* test broken

* fixing unit test

* blop

* blop

* Blop

* simplifying APi

* blop

* better syntax

* Simplifying top_collector

* refactoring

* blop

* Sync with master

* Added multithread search

* Collector refactoring

* Schema::builder

* CR and rustdoc

* CR comments

* blop

* Added an executor

* Sorted the segment readers in the searcher

* Update searcher.rs

* Fixed unit testst

* changed the place where we have the sort-segment-by-count heuristic

* using crossbeam::channel

* inlining

* Comments about panics propagating

* Added unit test for executor panicking

* Readded default

* Removed Default impl

* Added unit test for executor
 2018-11-30 22:46:59 +09:00
Paul Masurel
8b0b0133dd Importing crossbeam_channel from crossbeam reexport. 2018-11-19 09:19:28 +09:00
dependabot[bot]
7b9752f897 Update crossbeam-channel requirement from 0.2 to 0.3 (#436) 
* Update crossbeam-channel requirement from 0.2 to 0.3

Updates the requirements on [crossbeam-channel](https://github.com/crossbeam-rs/crossbeam-channel) to permit the latest version.
- [Release notes](https://github.com/crossbeam-rs/crossbeam-channel/releases)
- [Changelog](https://github.com/crossbeam-rs/crossbeam-channel/blob/master/CHANGELOG.md)
- [Commits](https://github.com/crossbeam-rs/crossbeam-channel/commits/v0.3.0)

Signed-off-by: dependabot[bot] <support@dependabot.com>

* fixing build
 2018-11-16 14:26:59 +09:00
dependabot[bot]
c92f41aea8 Update rand requirement from 0.5 to 0.6 (#440) 
* Update rand requirement from 0.5 to 0.6

Updates the requirements on [rand](https://github.com/rust-random/rand) to permit the latest version.
- [Release notes](https://github.com/rust-random/rand/releases)
- [Changelog](https://github.com/rust-random/rand/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-random/rand/commits)

Signed-off-by: dependabot[bot] <support@dependabot.com>

* Updating rand.
 2018-11-16 12:38:01 +09:00
Do Duy
dea16f1d9d Derive Clone for QueryParser (#442) 2018-11-15 18:45:40 +09:00
dependabot[bot]
236cfbec08 Update crossbeam requirement from 0.4 to 0.5 (#438) 
Updates the requirements on [crossbeam](https://github.com/crossbeam-rs/crossbeam) to permit the latest version.
- [Release notes](https://github.com/crossbeam-rs/crossbeam/releases)
- [Changelog](https://github.com/crossbeam-rs/crossbeam/blob/master/CHANGELOG.md)
- [Commits](https://github.com/crossbeam-rs/crossbeam/commits/crossbeam-0.5.0)

Signed-off-by: dependabot[bot] <support@dependabot.com>
 2018-11-15 06:16:22 +09:00
Paul Masurel
edcafb69bb Fixed benches 2018-11-10 17:04:29 -08:00
Paul Masurel
14908479d5 Release 0.7.1 2018-11-02 17:56:25 +09:00
Dru Sellers
ab4593eeb7 Adds open_or_create method (#428) 
* Change the semantic of Index::create_in_dir.

It should return an error if the directory already contains an Index.

* Index::open_or_create is working

* additional test

* Checking that schema matches on open_or_create.

Simplifying unit tests.

* simplifying Eq
 2018-10-31 08:36:39 +09:00
Dru Sellers
e75bb1d6a1 Fix NGram processing of non-ascii characters (#430) 
* A working version

* optimize the ngram parsing

* Decoding codepoint only once.

* Closes #429

* using leading_zeros to make code less cryptic

* lookup in a table
 2018-10-31 08:35:27 +09:00
dependabot[bot]
63b9d62237 Update base64 requirement from 0.9.1 to 0.10.0 (#433) 
Updates the requirements on [base64](https://github.com/alicemaz/rust-base64) to permit the latest version.
- [Release notes](https://github.com/alicemaz/rust-base64/releases)
- [Changelog](https://github.com/alicemaz/rust-base64/blob/master/RELEASE-NOTES.md)
- [Commits](https://github.com/alicemaz/rust-base64/commits/v0.10.0)

Signed-off-by: dependabot[bot] <support@dependabot.com>
 2018-10-31 08:34:44 +09:00
Jason Wolfe
0098e3d428 Compute space usage of a Searcher / SegmentReader / CompositeFile (#282) 
* Compute space usage of a Searcher / SegmentReader / CompositeFile

* Fix typo

* Add serde Serialize/Deserialize for all the SpaceUsage structs

* Fix indexing

* Public methods for consuming space usage information

* #281: Add a space usage method that takes a SegmentComponent to support code that is unaware of particular segment components, and to make it more likely to update methods when a new component type is added.

* Add support for space usage computation of positions skip index file (#281)

* Add some tests for space usage computation (#281)
 2018-10-15 09:04:36 +09:00
Konstantin Gribov
69d5e4b9b1 Added proper references for Apache Lucene & Solr (#432) 
Also, added links to websites for Lucene, Solr & ElasticSearch
 2018-10-12 08:46:07 +09:00
Paul Masurel
e0cdd3114d Fixing README (#427) 
Closes #424.
 2018-09-17 08:52:29 +09:00
Paul Masurel
f32b4a2ebe Removing release build from ci, disabling lto (#425) 2018-09-17 06:41:40 +09:00
Paul Masurel
6ff60b8ed8 Fixing README (#426) 2018-09-17 06:20:44 +09:00
Paul Masurel
8da28fb6cf Added iml filewq 2018-09-16 13:26:54 +09:00
Paul Masurel
0df2a221da Bump version pre-release 2018-09-16 13:24:14 +09:00
Paul Masurel
5449ec3c11 Snippet term score (#423) 2018-09-16 10:21:02 +09:00
Paul Masurel
10f6c07c53 Clippy (#422) 
* Cargo Format
* Clippy
 2018-09-15 20:20:22 +09:00
Paul Masurel
06e7bd18e7 Clippy (#421) 
* Cargo Format

* Clippy

* bugfix

* still clippy stuff

* clippy step 2
 2018-09-15 14:56:14 +09:00
Paul Masurel
37e4280c0a Cargo Format (#420) 2018-09-15 07:44:22 +09:00
Paul Masurel
0ba1cf93f7 Remove Searcher dereference (#419) 2018-09-14 09:54:26 +09:00
Paul Masurel
21a9940726 Update Changelog with #388 (#418) 2018-09-14 09:31:11 +09:00
pentlander
8600b8ea25 Top collector (#413) 
* Make TopCollector generic

Make TopCollector take a generic type instead of only being tied to
score. This will allow for sharing code between a TopCollector that
sorts results by Score and a TopCollector that sorts documents by a fast
field. This commit makes no functional changes to TopCollector.

* Add TopFieldCollector and TopScoreCollector

Create two new collectors that use the refactored TopCollector.
TopFieldCollector has the same functionality that TopCollector
originally had. TopFieldCollector allows for sorting results by a given
fast field. Closes tantivy-search/tantivy#388

* Make TopCollector private

Make TopCollector package private and export TopFieldCollector as
TopCollector to maintain backwards compatibility. Mark TopCollector
as deprecated to encourage use of the non-aliased TopFieldCollector.
Remove Collector implementation for TopCollector since it is not longer
used.
 2018-09-14 09:22:17 +09:00
Paul Masurel
30f4f85d48 Closes #414. (#417) 
Updating documentation for load_searchers.
 2018-09-14 09:11:07 +09:00
Paul Masurel
82d25b8397 Fixing snippet example 2018-09-13 12:39:42 +09:00
Paul Masurel
2104c0277c Updating uuid 2018-09-13 09:13:37 +09:00
Paul Masurel
dd37e109f2 Merge branch 'issue/368b' 2018-09-11 20:16:14 +09:00
Paul Masurel
cc23194c58 Editing document 2018-09-11 20:15:38 +09:00
Paul Masurel
63868733a3 Added SnippetGenerator 2018-09-11 09:45:27 +09:00
Paul Masurel
644d8a3a10 Added snippet generator 2018-09-10 16:39:45 +09:00
Paul Masurel
e32dba1a97 Phrase weight 2018-09-10 09:26:33 +09:00
Paul Masurel
a78aa4c259 updating doc 2018-09-09 17:23:30 +09:00
Paul Masurel
7e5f697d00 Closes #387 2018-09-09 16:23:56 +09:00
Paul Masurel
a78f4cca37 Merge branch 'issue/368' into issue/368b 2018-09-09 16:04:20 +09:00
Paul Masurel
2e44f0f099 blop 2018-09-09 14:23:24 +09:00
Vignesh Sarma K
9ccba9f864 Merge branch 'master' into issue/368 2018-09-07 20:27:38 +05:30
Paul Masurel
9101bf5753 Fragments 2018-09-07 09:57:12 +09:00
Paul Masurel
23e97da9f6 Merge branch 'master' of github.com:tantivy-search/tantivy 2018-09-07 08:44:14 +09:00
Paul Masurel
1d439e96f5 Using sort unstable by key. 2018-09-07 08:43:44 +09:00
Paul Masurel
934933582e Closes #402 (#403) 2018-09-06 10:12:26 +09:00
Paul Masurel
98c7fbdc6f Issue/378 (#392) 
* Added failing unit test

* Closes #378. Handling queries that end up empty after going through the analyzer.

* Fixed stop word example
 2018-09-06 10:11:54 +09:00
Paul Masurel
cec9956a01 Issue/389 (#405) 
* Setting up the dependency.

* Completed README
 2018-09-06 10:10:40 +09:00
Paul Masurel
c64972e039 Apply unicode lowercasing. (#408) 
Checks if the str is ASCII, and uses a fast track if it is the case.
If not, the std's definition of a lowercase character.

Closes #406
 2018-09-05 09:43:56 +09:00
Paul Masurel
b3b2421e8a Issue/367 (#404) 
* First stab

* Closes #367
 2018-09-04 09:17:00 +09:00
Paul Masurel
f570fe37d4 small changes 2018-08-31 09:03:44 +09:00
Paul Masurel
6704ab6987 Added methods to extract the matching terms. First stab 2018-08-30 09:47:19 +09:00
Paul Masurel
a12d211330 Extracting terms matching query in the document 2018-08-30 09:23:34 +09:00
Paul Masurel
ee681a4dd1 Added say thanks badge 2018-08-29 11:06:04 +09:00
petr-tik
d15efd6635 Closes #235 - adds a new error type (#398) 
error message suggests possible causes

Addressed code review 1 thread + smaller heap size
 2018-08-29 08:26:59 +09:00
Vignesh Sarma K (വിഘ്നേഷ് ശ൪മ കെ)
18814ba0c1 add a test for second fragment having higher score 2018-08-28 22:27:56 +05:30
Vignesh Sarma K (വിഘ്നേഷ് ശ൪മ കെ)
f247935bb9 Use HighlightSection::new rather than just directly creating the object 2018-08-28 22:16:22 +05:30
Vignesh Sarma K (വിഘ്നേഷ് ശ൪മ കെ)
6a197e023e ran rustfmt 2018-08-28 20:41:58 +05:30
Vignesh Sarma K (വിഘ്നേഷ് ശ൪മ കെ)
96a313c6dd add more tests 2018-08-28 20:41:58 +05:30
Vignesh Sarma K (വിഘ്നേഷ് ശ൪മ കെ)
fb9b1c1f41 add a test and fix the bug of not calculating first token 2018-08-28 20:41:58 +05:30
Vignesh Sarma K (വിഘ്നേഷ് ശ൪മ കെ)
e1bca6db9d update calculate_score to try_add_token 
`try_add_token` will now update the stop_offset as well.
`FragmentCandidate::new` now just takes `start_offset`,
it expects `try_add_token` to be called to add a token.
 2018-08-28 20:41:58 +05:30
Vignesh Sarma K (വിഘ്നേഷ് ശ൪മ കെ)
8438eda01a use while let instead of loop and if. 
as per CR comment
 2018-08-28 20:41:57 +05:30
Vignesh Sarma K (വിഘ്നേഷ് ശ൪മ കെ)
b373f00840 add htmlescape and update to_html fn to use it. 
tests and imports also updated.
 2018-08-28 20:41:57 +05:30
Vignesh Sarma K (വിഘ്നേഷ് ശ൪മ കെ)
46decdb0ea compare against accumulator rather than init value 2018-08-28 20:41:41 +05:30
Vignesh Sarma K (വിഘ്നേഷ് ശ൪മ കെ)
835cdc2fe8 Initial version of snippet 
refer #368
 2018-08-28 20:41:41 +05:30
Paul Masurel
19756bb7d6 Getting started on #368 2018-08-28 20:41:41 +05:30
CJP10
57e1f8ed28 Missed a closing bracket (#397) 2018-08-28 23:17:59 +09:00
Paul Masurel
2649c8a715 Issue/246 (#393) 
* Moving Range and All to Leaves

* Parsing OR/AND

* Simplify user input ast

* AND and OR supported. Returning an error when mixing syntax

Closes #246

* Added support for NOT

* Updated changelog
 2018-08-28 11:03:54 +09:00
Paul Masurel
ede97eded6 Removed use 2018-08-28 09:54:04 +09:00
Paul Masurel
4b7ff78c5a Added fundamentalss 2018-08-28 08:09:27 +09:00
Paul Masurel
948758ad78 First commit for the documentation 2018-08-27 09:49:49 +09:00
Paul Masurel
d71fa43ca3 Moving emoticon on the right side of the parenthesis 2018-08-23 08:59:11 +09:00
Paul Masurel
1e5266d4c9 Merge branch 'master' of github.com:tantivy-search/tantivy 2018-08-23 08:55:30 +09:00
Paul Masurel
537fc27231 Added bench line in features 2018-08-23 08:55:13 +09:00
Dru Sellers
af593b1116 Add default EN stopwords to the default analyzer (#381) 
* Add a default list of en stopwords

* Add the default en stopword filter to the standard tokenizers

* code review feedback
 2018-08-22 10:49:39 +09:00
Paul Masurel
3d73c0c240 Update issue templates 2018-08-21 10:59:08 +09:00
Paul Masurel
3a8e524f77 Added example to show how to access the inverted list directly 2018-08-21 09:36:13 +09:00
Paul Masurel
c0641c2b47 Remove generate html script. It moved to tantivy-search.github.io 2018-08-21 08:26:46 +09:00
Dru Sellers
ef3a16a129 Switch from error-chain to failure crate (#376) 
* Switch from error-chain to failure crate

* Added deprecated alias for

* Started editing the changeld
 2018-08-20 09:40:45 +09:00
Paul Masurel
a0a284fe91 Added a full fledge empty query and relyign on it in QueryParser, instead of using an empty clause. 2018-08-20 09:21:32 +09:00
dependabot[bot]
0feeef2684 Update owning_ref requirement from 0.3 to 0.4 (#379) 
Updates the requirements on [owning_ref](https://github.com/Kimundi/owning-ref-rs) to permit the latest version.
- [Release notes](https://github.com/Kimundi/owning-ref-rs/releases)
- [Commits](https://github.com/Kimundi/owning-ref-rs/commits)

Signed-off-by: dependabot[bot] <support@dependabot.com>
 2018-08-20 09:08:11 +09:00
Dru Sellers
cc50bdb06a Add a basic faceted search example (#383) 
* Add a basic faceted search example

* quieting the compiler
 2018-08-19 08:07:54 +09:00
Paul Masurel
23c2c3ae7c Building all examples on appveyor + running them on travis 2018-08-17 13:24:37 +09:00
Dru Sellers
674524ba91 Add an example of using the stopwords filter (#377) 2018-08-17 12:52:21 +09:00
Paul Masurel
60a9a7f837 Added example showing how to delete/update documents 2018-08-17 09:43:55 +09:00
Paul Masurel
5b5c706581 Simplified examples 2018-08-16 22:38:39 +09:00
Paul Masurel
3e14a76623 Update regex_query.rs 2018-08-15 16:38:32 +09:00
Paul Masurel
8cde1c81e5 Update README.md 2018-08-13 18:03:30 +09:00
Paul Masurel
8d0a29b137 Added sourcerer wall of fame 2018-08-13 18:02:49 +09:00
Paul Masurel
cbfb2fe19d Avoid building twice when doing code coverage 2018-08-13 10:38:01 +09:00
Vignesh Sarma K
09e00f1d42 add position_length to Token (#337) 
* add position_length to Token

refer #291

* Add term offset to `PhraseQuery`

ref #291

* Add new constructor for `PhraseQuery` that allows custom offset

* fix the method name as per pr comment

* Closes #291

Added unit test.
Using offsets from the analyzer in QueryParser.
 2018-08-13 10:14:50 +09:00
Paul Masurel
290620fdee Added slashes 2018-08-13 09:13:01 +09:00
petr-tik
f0d1b85bd8 N370 pr fix num searchers (#371) 
* Change ordering to Acquire

* set_num_searchers now uses AtomicUsize.store
 2018-08-13 08:56:30 +09:00
petr-tik
aaef546f91 Moved NUM_SEARCHERS into a local variable (#369) 
* Moved NUM_SEARCHERS into a local variable

dynamically determined as the number of available cpus.

var name in lowercase (not a constant anymore).

updated it in docstring

* lowercased the varnames

* User can set number of logical cores in create_from_metas

* cargo fmt

* Num_searchers as Arc<AtomicUsize>

Retrieving the value with Relaxed ordering

Reverted create_from_metas signature. However, it calls num_cpus and
sets the Arc val
 2018-08-12 20:08:14 +09:00
Paul Masurel
811ddf2226 Closes #364 (#365) 
* Closes #364

* Trying to raise the recursion limit

* Better unit test and bug fix on token offsets
 2018-08-08 11:15:20 +09:00
Paul Masurel
79a339d353 Removing env_logger dependency 2018-08-02 19:29:09 +09:00
Paul Masurel
e45e4c79d9 update crossbeam 2018-08-02 19:24:08 +09:00
Paul Masurel
848bf41bc9 Updating rand to 0.5 (#363) 2018-08-02 19:19:04 +09:00
Paul Masurel
d11cb087a7 Updated to combine-0.3 (#362) 2018-08-02 18:29:58 +09:00
Jacob Brown
2dd7422f42 replace chan with crossbeam-channel (#361) 
* replace chan with crossbeam-channel

* Update Cargo.toml
 2018-08-02 12:47:22 +09:00
Paul Masurel
e8707c02c0 Issue/333 (#335) 
* Add skip information for posting list (skip to doc ids) 
* Separate num bits from data for positions (skip n positions)
* Address in the position using a n-position offset
* Added a long skip structure to allow efficient opening of the position for a given term.
 2018-07-31 10:51:53 +09:00
dependabot[bot]
55928d756a Update rust-stemmers requirement to 1.0.2 (#350) 
* Update rust-stemmers requirement to 1.0.2

Updates the requirements on [rust-stemmers](https://github.com/CurrySoftware/rust-stemmers) to permit the latest version.
- [Release notes](https://github.com/CurrySoftware/rust-stemmers/releases)
- [Commits](https://github.com/CurrySoftware/rust-stemmers/commits)

Signed-off-by: dependabot[bot] <support@dependabot.com>

* Update Cargo.toml
 2018-07-31 09:32:57 +09:00
dependabot[bot]
a4370bca64 Update owned-read requirement to 0.4 (#352) 
Updates the requirements on [owned-read](https://github.com/tantivy-search/owned-read) to permit the latest version.
- [Release notes](https://github.com/tantivy-search/owned-read/releases)
- [Commits](https://github.com/tantivy-search/owned-read/commits)

Signed-off-by: dependabot[bot] <support@dependabot.com>
 2018-07-31 09:32:01 +09:00
dependabot[bot]
5a5c5a8ca5 Update bit-set requirement to 0.5.0 (#351) 
* Update bit-set requirement to 0.5.0

Updates the requirements on [bit-set](https://github.com/contain-rs/bit-set) to permit the latest version.
- [Release notes](https://github.com/contain-rs/bit-set/releases)
- [Commits](https://github.com/contain-rs/bit-set/commits)

Signed-off-by: dependabot[bot] <support@dependabot.com>

* Update Cargo.toml

* Update Cargo.toml
 2018-07-31 09:31:41 +09:00
dependabot[bot]
1b470dd474 Update log requirement to 0.4.3 (#353) 
* Update log requirement to 0.4.3

Updates the requirements on [log](https://github.com/rust-lang/log) to permit the latest version.
- [Release notes](https://github.com/rust-lang/log/releases)
- [Changelog](https://github.com/rust-lang-nursery/log/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-lang/log/commits/env_logger-0.4.3)

Signed-off-by: dependabot[bot] <support@dependabot.com>

* Update Cargo.toml
 2018-07-31 09:31:19 +09:00
Paul Masurel
52b4575245 Issue/355 (#358) 
* issue with top_k sorting (#356)

* Closes #355
 2018-07-31 08:24:55 +09:00
dependabot[bot]
ddd2d5b04c Update lazy_static requirement to 1.0.2 (#349) 
* Update lazy_static requirement to 1.0.2

Updates the requirements on [lazy_static](https://github.com/rust-lang-nursery/lazy-static.rs) to permit the latest version.
- [Release notes](https://github.com/rust-lang-nursery/lazy-static.rs/releases)
- [Commits](https://github.com/rust-lang-nursery/lazy-static.rs/commits/v1.0.2)

Signed-off-by: dependabot[bot] <support@dependabot.com>

* Update Cargo.toml
 2018-07-30 12:34:06 +09:00
dependabot[bot]
fa22b4041a Update itertools requirement to 0.7.8 (#346) 
* Update itertools requirement to 0.7.8

Updates the requirements on [itertools](https://github.com/bluss/rust-itertools) to permit the latest version.
- [Release notes](https://github.com/bluss/rust-itertools/releases)
- [Commits](https://github.com/bluss/rust-itertools/commits/0.7.8)

Signed-off-by: dependabot[bot] <support@dependabot.com>

* Update Cargo.toml
 2018-07-30 11:32:12 +09:00
dependabot[bot]
8faee143fa Update regex requirement to 1.0 (#347) 
Updates the requirements on [regex](https://github.com/rust-lang/regex) to permit the latest version.
- [Release notes](https://github.com/rust-lang/regex/releases)
- [Changelog](https://github.com/rust-lang/regex/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-lang/regex/commits/1.0.2)

Signed-off-by: dependabot[bot] <support@dependabot.com>
 2018-07-30 09:59:19 +09:00
dependabot[bot]
366ce98f08 Update tempfile requirement to 3.0 (#348) 
Updates the requirements on [tempfile](https://github.com/Stebalien/tempfile) to permit the latest version.
- [Release notes](https://github.com/Stebalien/tempfile/releases)
- [Changelog](https://github.com/Stebalien/tempfile/blob/master/NEWS)
- [Commits](https://github.com/Stebalien/tempfile/commits/v3.0.3)

Signed-off-by: dependabot[bot] <support@dependabot.com>
 2018-07-30 09:58:56 +09:00
Paul Masurel
190e60a41c Closes #339. (#340) 
As required per the FacetCollector,
facet values needs to be sorted before being encoded in the
multivalued field.
 2018-07-25 18:21:48 +09:00
Vignesh Sarma K
b9558801a1 Declare and implement separate Clone Traits (#336) 
For traits, `Directory` and `MergePolicy`.

refer #306
 2018-07-18 12:36:43 +09:00
Paul Masurel
36728215ac Using the codecov badge 2018-07-10 21:19:59 +09:00
Paul Masurel
39551a0418 fix travis 2018-07-10 13:08:22 +09:00
Paul Masurel
39b98b2e76 fix travis 2018-07-10 13:07:15 +09:00
Paul Masurel
616162400d Add missing space 2018-07-10 12:49:32 +09:00
Paul Masurel
694d164db6 fix travis.yml 2018-07-10 09:39:39 +09:00
Paul Masurel
ef442cefb1 codecov 2018-07-10 09:38:59 +09:00
Paul Masurel
14da241f35 Readed cov 2018-07-10 09:25:24 +09:00
Paul Masurel
346a9e4287 Set dev version 2018-07-10 09:20:21 +09:00
257 changed files with 29085 additions and 11727 deletions
Expand all files Collapse all files

12
.github/FUNDING.yml vendored Normal file
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@@ -0,0 +1,12 @@
# These are supported funding model platforms
github: fulmicoton
patreon: # Replace with a single Patreon username
open_collective: # Replace with a single Open Collective username
ko_fi: # Replace with a single Ko-fi username
tidelift: # Replace with a single Tidelift platform-name/package-name e.g., npm/babel
community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
liberapay: # Replace with a single Liberapay username
issuehunt: # Replace with a single IssueHunt username
otechie: # Replace with a single Otechie username
custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']

19
.github/ISSUE_TEMPLATE/bug_report.md vendored Normal file
View File

@@ -0,0 +1,19 @@
---
name: Bug report
about: Create a report to help us improve
---
**Describe the bug**
- What did you do?
- What happened?
- What was expected?
**Which version of tantivy are you using?**
If "master", ideally give the specific sha1 revision.
**To Reproduce**
If your bug is deterministic, can you give a minimal reproducing code?
Some bugs are not deterministic. Can you describe with precision in which context it happened?
If this is possible, can you share your code?

14
.github/ISSUE_TEMPLATE/feature_request.md vendored Normal file
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@@ -0,0 +1,14 @@
---
name: Feature request
about: Suggest an idea for this project
---
**Is your feature request related to a problem? Please describe.**
A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
**Describe the solution you'd like**
A clear and concise description of what you want to happen.
**[Optional] describe alternatives you've considered**
A clear and concise description of any alternative solutions or features you've considered.

7
.github/ISSUE_TEMPLATE/question.md vendored Normal file
View File

@@ -0,0 +1,7 @@
---
name: Question
about: Ask any question about tantivy's usage...
---
Try to be specific about your use case...

2
.gitignore vendored
View File

@@ -1,3 +1,5 @@
tantivy.iml
proptest-regressions
*.swp
target
target/debug

127
.travis.yml
View File

@@ -9,112 +9,77 @@ sudo: required
env:
global:
- CRATE_NAME=tantivy
- TRAVIS_CARGO_NIGHTLY_FEATURE=""
# - secure: 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
addons:
apt:
sources:
- ubuntu-toolchain-r-test
- kalakris-cmake
packages:
- gcc-4.8
- g++-4.8
- libcurl4-openssl-dev
- libelf-dev
- libdw-dev
- binutils-dev
- cmake
matrix:
include:
# Android
- env: TARGET=aarch64-linux-android DISABLE_TESTS=1
- env: TARGET=arm-linux-androideabi DISABLE_TESTS=1
- env: TARGET=armv7-linux-androideabi DISABLE_TESTS=1
- env: TARGET=i686-linux-android DISABLE_TESTS=1
- env: TARGET=x86_64-linux-android DISABLE_TESTS=1
# iOS
#- env: TARGET=aarch64-apple-ios DISABLE_TESTS=1
# os: osx
#- env: TARGET=armv7-apple-ios DISABLE_TESTS=1
# os: osx
#- env: TARGET=armv7s-apple-ios DISABLE_TESTS=1
# os: osx
#- env: TARGET=i386-apple-ios DISABLE_TESTS=1
# os: osx
- env: TARGET=x86_64-apple-ios DISABLE_TESTS=1
os: osx
#- env: TARGET=arm-linux-androideabi DISABLE_TESTS=1
#- env: TARGET=armv7-linux-androideabi DISABLE_TESTS=1
#- env: TARGET=i686-linux-android DISABLE_TESTS=1
#- env: TARGET=x86_64-linux-android DISABLE_TESTS=1
# Linux
- env: TARGET=aarch64-unknown-linux-gnu
# - env: TARGET=arm-unknown-linux-gnueabi
# - env: TARGET=armv7-unknown-linux-gnueabihf
- env: TARGET=i686-unknown-linux-gnu
#- env: TARGET=i686-unknown-linux-musl
#- env: TARGET=mips-unknown-linux-gnu
#- env: TARGET=mips64-unknown-linux-gnuabi64
#- env: TARGET=mips64el-unknown-linux-gnuabi64
#- env: TARGET=mipsel-unknown-linux-gnu
#- env: TARGET=powerpc-unknown-linux-gnu
#- env: TARGET=powerpc64-unknown-linux-gnu
#- env: TARGET=powerpc64le-unknown-linux-gnu
#- env: TARGET=s390x-unknown-linux-gnu DISABLE_TESTS=1
- env: TARGET=x86_64-unknown-linux-gnu
- env: TARGET=x86_64-unknown-linux-musl
#- env: TARGET=aarch64-unknown-linux-gnu
#- env: TARGET=i686-unknown-linux-gnu
- env: TARGET=x86_64-unknown-linux-gnu CODECOV=1 #UPLOAD_DOCS=1
# - env: TARGET=x86_64-unknown-linux-musl CODECOV=1
# OSX
#- env: TARGET=i686-apple-darwin
# os: osx
- env: TARGET=x86_64-apple-darwin
os: osx
# *BSD
#- env: TARGET=i686-unknown-freebsd DISABLE_TESTS=1
#- env: TARGET=x86_64-unknown-freebsd DISABLE_TESTS=1
#- env: TARGET=x86_64-unknown-netbsd DISABLE_TESTS=1
# Windows
#- env: TARGET=x86_64-pc-windows-gnu
# Bare metal
# These targets don't support std and as such are likely not suitable for
# most crates.
# - env: TARGET=thumbv6m-none-eabi
# - env: TARGET=thumbv7em-none-eabi
# - env: TARGET=thumbv7em-none-eabihf
# - env: TARGET=thumbv7m-none-eabi
# Testing other channels
#- env: TARGET=x86_64-unknown-linux-gnu
# rust: nightly
#- env: TARGET=x86_64-apple-darwin
# os: osx
# rust: nightly
before_install:
- set -e
- rustup self update
- rustup component add rustfmt
install:
- sh ci/install.sh
- source ~/.cargo/env || true
- env | grep "TRAVIS"
before_script:
- export PATH=$HOME/.cargo/bin:$PATH
- cargo install cargo-update || echo "cargo-update already installed"
- cargo install cargo-travis || echo "cargo-travis already installed"
script:
- bash ci/script.sh
after_script: set +e
- cargo fmt --all -- --check
before_deploy:
- sh ci/before_deploy.sh
#
#deploy:
# # - Create a `public_repo` GitHub token. Go to: https://github.com/settings/tokens/new
# # - Encrypt it: `travis encrypt 0123456789012345678901234567890123456789
# # - Paste the output down here
# api_key:
# secure: 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
# file_glob: true
# file: $CRATE_NAME-$TRAVIS_TAG-$TARGET.*
# on:
# # TODO Here you can pick which targets will generate binary releases
# # In this example, there are some targets that are tested using the stable
# # and nightly channels. This condition makes sure there is only one release
# # for such targets and that's generated using the stable channel
# condition: $TRAVIS_RUST_VERSION = stable
# tags: true
# provider: releases
# skip_cleanup: true
cache: cargo
before_cache:
# Travis can't cache files that are not readable by "others"
- chmod -R a+r $HOME/.cargo
after_success:
# Needs GH_TOKEN env var to be set in travis settings
- if [[ -v GH_TOKEN ]]; then echo "GH TOKEN IS SET"; else echo "GH TOKEN NOT SET"; fi
- if [[ -v UPLOAD_DOCS ]]; then cargo doc; cargo doc-upload; else echo "doc upload disabled."; fi
#cache: cargo
#before_cache:
# # Travis can't cache files that are not readable by "others"
# - chmod -R a+r $HOME/.cargo
# - find ./target/debug -type f -maxdepth 1 -delete
# - rm -f ./target/.rustc_info.json
# - rm -fr ./target/debug/{deps,.fingerprint}/tantivy*
# - rm -r target/debug/examples/
# - ls -1 examples/ | sed -e 's/\.rs$//' | xargs -I "{}" find target/* -name "*{}*" -type f -delete
#branches:
# only:

237
CHANGELOG.md
View File

@@ -1,3 +1,240 @@
Tantivy 0.13.2
===================
Bugfix. Acquiring a facet reader on a segment that does not contain any
doc with this facet returns `None`. (#896)
Tantivy 0.13.1
======================
Made `Query` and `Collector` `Send + Sync`.
Updated misc dependency versions.
Tantivy 0.13.0
======================
Tantivy 0.13 introduce a change in the index format that will require
you to reindex your index (BlockWAND information are added in the skiplist).
The index size increase is minor as this information is only added for
full blocks.
If you have a massive index for which reindexing is not an option, please contact me
so that we can discuss possible solutions.
- Bugfix in `FuzzyTermQuery` not matching terms by prefix when it should (@Peachball)
- Relaxed constraints on the custom/tweak score functions. At the segment level, they can be mut, and they are not required to be Sync + Send.
- `MMapDirectory::open` does not return a `Result` anymore.
- Change in the DocSet and Scorer API. (@fulmicoton).
A freshly created DocSet point directly to their first doc. A sentinel value called TERMINATED marks the end of a DocSet.
`.advance()` returns the new DocId. `Scorer::skip(target)` has been replaced by `Scorer::seek(target)` and returns the resulting DocId.
As a result, iterating through DocSet now looks as follows
```rust
let mut doc = docset.doc();
while doc != TERMINATED {
// ...
doc = docset.advance();
}
```
The change made it possible to greatly simplify a lot of the docset's code.
- Misc internal optimization and introduction of the `Scorer::for_each_pruning` function. (@fulmicoton)
- Added an offset option to the Top(.*)Collectors. (@robyoung)
- Added Block WAND. Performance on TOP-K on term-unions should be greatly increased. (@fulmicoton, and special thanks
to the PISA team for answering all my questions!)
Tantivy 0.12.0
======================
- Removing static dispatch in tokenizers for simplicity. (#762)
- Added backward iteration for `TermDictionary` stream. (@halvorboe)
- Fixed a performance issue when searching for the posting lists of a missing term (@audunhalland)
- Added a configurable maximum number of docs (10M by default) for a segment to be considered for merge (@hntd187, landed by @halvorboe #713)
- Important Bugfix #777, causing tantivy to retain memory mapping. (diagnosed by @poljar)
- Added support for field boosting. (#547, @fulmicoton)
## How to update?
Crates relying on custom tokenizer, or registering tokenizer in the manager will require some
minor changes. Check https://github.com/tantivy-search/tantivy/blob/master/examples/custom_tokenizer.rs
to check for some code sample.
Tantivy 0.11.3
=======================
- Fixed DateTime as a fast field (#735)
Tantivy 0.11.2
=======================
- The future returned by `IndexWriter::merge` does not borrow `self` mutably anymore (#732)
- Exposing a constructor for `WatchHandle` (#731)
Tantivy 0.11.1
=====================
- Bug fix #729
Tantivy 0.11.0
=====================
- Added f64 field. Internally reuse u64 code the same way i64 does (@fdb-hiroshima)
- Various bugfixes in the query parser.
- Better handling of hyphens in query parser. (#609)
- Better handling of whitespaces.
- Closes #498 - add support for Elastic-style unbounded range queries for alphanumeric types eg. "title:>hello", "weight:>=70.5", "height:<200" (@petr-tik)
- API change around `Box<BoxableTokenizer>`. See detail in #629
- Avoid rebuilding Regex automaton whenever a regex query is reused. #639 (@brainlock)
- Add footer with some metadata to index files. #605 (@fdb-hiroshima)
- Add a method to check the compatibility of the footer in the index with the running version of tantivy (@petr-tik)
- TopDocs collector: ensure stable sorting on equal score. #671 (@brainlock)
- Added handling of pre-tokenized text fields (#642), which will enable users to
load tokens created outside tantivy. See usage in examples/pre_tokenized_text. (@kkoziara)
- Fix crash when committing multiple times with deleted documents. #681 (@brainlock)
## How to update?
- The index format is changed. You are required to reindex your data to use tantivy 0.11.
- `Box<dyn BoxableTokenizer>` has been replaced by a `BoxedTokenizer` struct.
- Regex are now compiled when the `RegexQuery` instance is built. As a result, it can now return
an error and handling the `Result` is required.
- `tantivy::version()` now returns a `Version` object. This object implements `ToString()`
Tantivy 0.10.2
=====================
- Closes #656. Solving memory leak.
Tantivy 0.10.1
=====================
- Closes #544. A few users experienced problems with the directory watching system.
Avoid watching the mmap directory until someone effectively creates a reader that uses
this functionality.
Tantivy 0.10.0
=====================
*Tantivy 0.10.0 index format is compatible with the index format in 0.9.0.*
- Added an API to easily tweak or entirely replace the
default score. See `TopDocs::tweak_score`and `TopScore::custom_score` (@pmasurel)
- Added an ASCII folding filter (@drusellers)
- Bugfix in `query.count` in presence of deletes (@pmasurel)
- Added `.explain(...)` in `Query` and `Weight` to (@pmasurel)
- Added an efficient way to `delete_all_documents` in `IndexWriter` (@petr-tik).
All segments are simply removed.
Minor
---------
- Switched to Rust 2018 (@uvd)
- Small simplification of the code.
Calling .freq() or .doc() when .advance() has never been called
on segment postings should panic from now on.
- Tokens exceeding `u16::max_value() - 4` chars are discarded silently instead of panicking.
- Fast fields are now preloaded when the `SegmentReader` is created.
- `IndexMeta` is now public. (@hntd187)
- `IndexWriter` `add_document`, `delete_term`. `IndexWriter` is `Sync`, making it possible to use it with a `
Arc<RwLock<IndexWriter>>`. `add_document` and `delete_term` can
only require a read lock. (@pmasurel)
- Introducing `Opstamp` as an expressive type alias for `u64`. (@petr-tik)
- Stamper now relies on `AtomicU64` on all platforms (@petr-tik)
- Bugfix - Files get deleted slightly earlier
- Compilation resources improved (@fdb-hiroshima)
## How to update?
Your program should be usable as is.
### Fast fields
Fast fields used to be accessed directly from the `SegmentReader`.
The API changed, you are now required to acquire your fast field reader via the
`segment_reader.fast_fields()`, and use one of the typed method:
- `.u64()`, `.i64()` if your field is single-valued ;
- `.u64s()`, `.i64s()` if your field is multi-valued ;
- `.bytes()` if your field is bytes fast field.
Tantivy 0.9.0
=====================
*0.9.0 index format is not compatible with the
previous index format.*
- MAJOR BUGFIX :
Some `Mmap` objects were being leaked, and would never get released. (@fulmicoton)
- Removed most unsafe (@fulmicoton)
- Indexer memory footprint improved. (VInt comp, inlining the first block. (@fulmicoton)
- Stemming in other language possible (@pentlander)
- Segments with no docs are deleted earlier (@barrotsteindev)
- Added grouped add and delete operations.
They are guaranteed to happen together (i.e. they cannot be split by a commit).
In addition, adds are guaranteed to happen on the same segment. (@elbow-jason)
- Removed `INT_STORED` and `INT_INDEXED`. It is now possible to use `STORED` and `INDEXED`
for int fields. (@fulmicoton)
- Added DateTime field (@barrotsteindev)
- Added IndexReader. By default, index is reloaded automatically upon new commits (@fulmicoton)
- SIMD linear search within blocks (@fulmicoton)
## How to update ?
tantivy 0.9 brought some API breaking change.
To update from tantivy 0.8, you will need to go through the following steps.
- `schema::INT_INDEXED` and `schema::INT_STORED` should be replaced by `schema::INDEXED` and `schema::INT_STORED`.
- The index now does not hold the pool of searcher anymore. You are required to create an intermediary object called
`IndexReader` for this.
```rust
// create the reader. You typically need to create 1 reader for the entire
// lifetime of you program.
let reader = index.reader()?;
// Acquire a searcher (previously `index.searcher()`) is now written:
let searcher = reader.searcher();
// With the default setting of the reader, you are not required to
// call `index.load_searchers()` anymore.
//
// The IndexReader will pick up that change automatically, regardless
// of whether the update was done in a different process or not.
// If this behavior is not wanted, you can create your reader with
// the `ReloadPolicy::Manual`, and manually decide when to reload the index
// by calling `reader.reload()?`.
```
Tantivy 0.8.2
=====================
Fixing build for x86_64 platforms. (#496)
No need to update from 0.8.1 if tantivy
is building on your platform.
Tantivy 0.8.1
=====================
Hotfix of #476.
Merge was reflecting deletes before commit was passed.
Thanks @barrotsteindev for reporting the bug.
Tantivy 0.8.0
=====================
*No change in the index format*
- API Breaking change in the collector API. (@jwolfe, @fulmicoton)
- Multithreaded search (@jwolfe, @fulmicoton)
Tantivy 0.7.1
=====================
*No change in the index format*
- Bugfix: NGramTokenizer panics on non ascii chars
- Added a space usage API
Tantivy 0.7
=====================
- Skip data for doc ids and positions (@fulmicoton),
greatly improving performance
- Tantivy error now rely on the failure crate (@drusellers)
- Added support for `AND`, `OR`, `NOT` syntax in addition to the `+`,`-` syntax
- Added a snippet generator with highlight (@vigneshsarma, @fulmicoton)
- Added a `TopFieldCollector` (@pentlander)
Tantivy 0.6.1
=========================
- Bugfix #324. GC removing was removing file that were still in useful

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Cargo.toml
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[package]
name = "tantivy"
version = "0.6.1"
version = "0.13.2"
authors = ["Paul Masurel <paul.masurel@gmail.com>"]
license = "MIT"
categories = ["database-implementations", "data-structures"]
description = """Search engine library"""
documentation = "https://tantivy-search.github.io/tantivy/tantivy/index.html"
documentation = "https://docs.rs/tantivy/"
homepage = "https://github.com/tantivy-search/tantivy"
repository = "https://github.com/tantivy-search/tantivy"
readme = "README.md"
keywords = ["search", "information", "retrieval"]
edition = "2018"
[dependencies]
base64 = "0.9.1"
byteorder = "1.0"
lazy_static = "0.2.1"
tinysegmenter = "0.1.0"
regex = "0.2"
fst = {version="0.3", default-features=false}
fst-regex = { version="0.2" }
lz4 = {version="1.20", optional=true}
snap = {version="0.2"}
atomicwrites = {version="0.2.2", optional=true}
tempfile = "2.1"
log = "0.3.6"
combine = "2.2"
tempdir = "0.3"
serde = "1.0"
serde_derive = "1.0"
serde_json = "1.0"
num_cpus = "1.2"
itertools = "0.5.9"
levenshtein_automata = {version="0.1", features=["fst_automaton"]}
bit-set = "0.4.0"
uuid = { version = "0.6", features = ["v4", "serde"] }
chan = "0.1"
crossbeam = "0.3"
futures = "0.1"
futures-cpupool = "0.1"
error-chain = "0.8"
owning_ref = "0.3"
stable_deref_trait = "1.0.0"
rust-stemmers = "0.1.0"
downcast = { version="0.9" }
matches = "0.1"
bitpacking = "0.5"
census = "0.1"
fnv = "1.0.6"
owned-read = "0.1"
base64 = "0.12"
byteorder = "1"
crc32fast = "1"
once_cell = "1"
regex ={version = "1", default-features = false, features = ["std"]}
tantivy-fst = "0.3"
memmap = {version = "0.7", optional=true}
lz4 = {version="1", optional=true}
snap = "1"
atomicwrites = {version="0.2", optional=true}
tempfile = "3"
log = "0.4"
serde = {version="1", features=["derive"]}
serde_json = "1"
num_cpus = "1"
fs2={version="0.4", optional=true}
levenshtein_automata = "0.2"
notify = {version="4", optional=true}
uuid = { version = "0.8", features = ["v4", "serde"] }
crossbeam = "0.7"
futures = {version = "0.3", features=["thread-pool"] }
owning_ref = "0.4"
stable_deref_trait = "1"
rust-stemmers = "1"
downcast-rs = "1"
tantivy-query-grammar = { version="0.13", path="./query-grammar" }
bitpacking = {version="0.8", default-features = false, features=["bitpacker4x"]}
census = "0.4"
fnv = "1"
owned-read = "0.4"
failure = "0.1"
htmlescape = "0.3"
fail = "0.4"
murmurhash32 = "0.2"
chrono = "0.4"
smallvec = "1"
rayon = "1"
[target.'cfg(windows)'.dependencies]
winapi = "0.2"
winapi = "0.3"
[dev-dependencies]
rand = "0.3"
env_logger = "0.4"
rand = "0.7"
maplit = "1"
matches = "0.1.8"
proptest = "0.10"
[dev-dependencies.fail]
version = "0.4"
features = ["failpoints"]
[profile.release]
opt-level = 3
debug = false
lto = true
debug-assertions = false
[profile.test]
debug-assertions = true
overflow-checks = true
[features]
default = ["mmap"]
mmap = ["fst/mmap", "atomicwrites"]
mmap = ["atomicwrites", "fs2", "memmap", "notify"]
lz4-compression = ["lz4"]
failpoints = ["fail/failpoints"]
unstable = [] # useful for benches.
wasm-bindgen = ["uuid/wasm-bindgen"]
scoref64 = [] # scores are f64 instead of f32. was introduced to debug blockwand.
[workspace]
members = ["query-grammar"]
[badges]
travis-ci = { repository = "tantivy-search/tantivy" }
[[example]]
name = "simple_search"
required-features = ["mmap"]
[[example]]
name = "custom_tokenizer"
# Following the "fail" crate best practises, we isolate
# tests that define specific behavior in fail check points
# in a different binary.
#
# We do that because, fail rely on a global definition of
# failpoints behavior and hence, it is incompatible with
# multithreading.
[[test]]
name = "failpoints"
path = "tests/failpoints/mod.rs"
required-features = ["fail/failpoints"]

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test:
echo "Run test only... No examples."
cargo test --tests --lib

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![Tantivy](https://tantivy-search.github.io/logo/tantivy-logo.png)
[![Build Status](https://travis-ci.org/tantivy-search/tantivy.svg?branch=master)](https://travis-ci.org/tantivy-search/tantivy)
[![Coverage Status](https://coveralls.io/repos/github/tantivy-search/tantivy/badge.svg?branch=master&refresh1)](https://coveralls.io/github/tantivy-search/tantivy?branch=master)
[![codecov](https://codecov.io/gh/tantivy-search/tantivy/branch/master/graph/badge.svg)](https://codecov.io/gh/tantivy-search/tantivy)
[![Join the chat at https://gitter.im/tantivy-search/tantivy](https://badges.gitter.im/tantivy-search/tantivy.svg)](https://gitter.im/tantivy-search/tantivy?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
[![Build status](https://ci.appveyor.com/api/projects/status/r7nb13kj23u8m9pj/branch/master?svg=true)](https://ci.appveyor.com/project/fulmicoton/tantivy/branch/master)
[![Crates.io](https://img.shields.io/crates/v/tantivy.svg)](https://crates.io/crates/tantivy)
[![Say Thanks!](https://img.shields.io/badge/Say%20Thanks-!-1EAEDB.svg)](https://saythanks.io/to/fulmicoton)
**Tantivy** is a **full text search engine library** written in rust.
![Tantivy](https://tantivy-search.github.io/logo/tantivy-logo.png)
It is closer to Lucene than to Elastic Search and Solr in the sense it is not
[![](https://sourcerer.io/fame/fulmicoton/tantivy-search/tantivy/images/0)](https://sourcerer.io/fame/fulmicoton/tantivy-search/tantivy/links/0)
[![](https://sourcerer.io/fame/fulmicoton/tantivy-search/tantivy/images/1)](https://sourcerer.io/fame/fulmicoton/tantivy-search/tantivy/links/1)
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[![](https://sourcerer.io/fame/fulmicoton/tantivy-search/tantivy/images/5)](https://sourcerer.io/fame/fulmicoton/tantivy-search/tantivy/links/5)
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[![Become a patron](https://c5.patreon.com/external/logo/become_a_patron_button.png)](https://www.patreon.com/fulmicoton)
**Tantivy** is a **full text search engine library** written in Rust.
It is closer to [Apache Lucene](https://lucene.apache.org/) than to [Elasticsearch](https://www.elastic.co/products/elasticsearch) or [Apache Solr](https://lucene.apache.org/solr/) in the sense it is not
an off-the-shelf search engine server, but rather a crate that can be used
to build such a search engine.
Tantivy is, in fact, strongly inspired by Lucene's design.
# Benchmark
The following [benchmark](https://tantivy-search.github.io/bench/) break downs
performance for different type of queries / collection.
In general, Tantivy tends to be
- slower than Lucene on union with a Top-K due to Block-WAND optimization.
- faster than Lucene on intersection and phrase queries.
Your mileage WILL vary depending on the nature of queries and their load.
# Features
- Full-text search
- Configurable tokenizer (stemming available for 17 Latin languages with third party support for Chinese ([tantivy-jieba](https://crates.io/crates/tantivy-jieba) and [cang-jie](https://crates.io/crates/cang-jie)), Japanese ([lindera](https://github.com/lindera-morphology/lindera-tantivy) and [tantivy-tokenizer-tiny-segmente](https://crates.io/crates/tantivy-tokenizer-tiny-segmenter)) and Korean ([lindera](https://github.com/lindera-morphology/lindera-tantivy) + [lindera-ko-dic-builder](https://github.com/lindera-morphology/lindera-ko-dic-builder))
- Fast (check out the :racehorse: :sparkles: [benchmark](https://tantivy-search.github.io/bench/) :sparkles: :racehorse:)
- Tiny startup time (<10ms), perfect for command line tools
- BM25 scoring (the same as lucene)
- Basic query language (`+michael +jackson`)
- Phrase queries search (\"michael jackson\"`)
- BM25 scoring (the same as Lucene)
- Natural query language (e.g. `(michael AND jackson) OR "king of pop"`)
- Phrase queries search (e.g. `"michael jackson"`)
- Incremental indexing
- Multithreaded indexing (indexing English Wikipedia takes < 3 minutes on my desktop)
- Mmap directory
- SIMD integer compression when the platform/CPU includes the SSE2 instruction set.
- Single valued and multivalued u64 and i64 fast fields (equivalent of doc values in Lucene)
- SIMD integer compression when the platform/CPU includes the SSE2 instruction set
- Single valued and multivalued u64, i64, and f64 fast fields (equivalent of doc values in Lucene)
- `&[u8]` fast fields
- Text, i64, u64, f64, dates, and hierarchical facet fields
- LZ4 compressed document store
- Range queries
- Faceted search
- Configurable indexing (optional term frequency and position indexing
- Configurable indexing (optional term frequency and position indexing)
- Cheesy logo with a horse
# Non-features
## Non-features
- Distributed search and will not be in the scope of tantivy.
- Distributed search is out of the scope of Tantivy. That being said, Tantivy is a
library upon which one could build a distributed search. Serializable/mergeable collector state for instance,
are within the scope of Tantivy.
# Supported OS and compiler
Tantivy works on stable rust (>= 1.27) and supports Linux, MacOS and Windows.
# Getting started
- [tantivy's simple search example](http://fulmicoton.com/tantivy-examples/simple_search.html)
- [tantivy-cli and its tutorial](https://github.com/tantivy-search/tantivy-cli).
`tantivy-cli` is an actual command line interface that makes it easy for you to create a search engine,
index documents and search via the CLI or a small server with a REST API.
It will walk you through getting a wikipedia search engine up and running in a few minutes.
- [reference doc]
- [For the last released version](https://docs.rs/tantivy/)
- [For the last master branch](https://tantivy-search.github.io/tantivy/tantivy/index.html)
Tantivy works on stable Rust (>= 1.27) and supports Linux, MacOS, and Windows.
# Compiling
- [Tantivy's simple search example](https://tantivy-search.github.io/examples/basic_search.html)
- [tantivy-cli and its tutorial](https://github.com/tantivy-search/tantivy-cli) - `tantivy-cli` is an actual command line interface that makes it easy for you to create a search engine,
index documents, and search via the CLI or a small server with a REST API.
It walks you through getting a wikipedia search engine up and running in a few minutes.
- [Reference doc for the last released version](https://docs.rs/tantivy/)
## Development
# How can I support this project?
Tantivy compiles on stable rust but requires `Rust >= 1.27`.
To check out and run tests, you can simply run :
There are many ways to support this project.
git clone git@github.com:tantivy-search/tantivy.git
- Use Tantivy and tell us about your experience on [Gitter](https://gitter.im/tantivy-search/tantivy) or by email (paul.masurel@gmail.com)
- Report bugs
- Write a blog post
- Help with documentation by asking questions or submitting PRs
- Contribute code (you can join [our Gitter](https://gitter.im/tantivy-search/tantivy))
- Talk about Tantivy around you
- Drop a word on on [![Say Thanks!](https://img.shields.io/badge/Say%20Thanks-!-1EAEDB.svg)](https://saythanks.io/to/fulmicoton) or even [![Become a patron](https://c5.patreon.com/external/logo/become_a_patron_button.png)](https://www.patreon.com/fulmicoton)
# Contributing code
We use the GitHub Pull Request workflow: reference a GitHub ticket and/or include a comprehensive commit message when opening a PR.
## Clone and build locally
Tantivy compiles on stable Rust but requires `Rust >= 1.27`.
To check out and run tests, you can simply run:
```bash
git clone https://github.com/tantivy-search/tantivy.git
cd tantivy
cargo build
```
## Run tests
# Contribute
Some tests will not run with just `cargo test` because of `fail-rs`.
To run the tests exhaustively, run `./run-tests.sh`.
Send me an email (paul.masurel at gmail.com) if you want to contribute to tantivy.
## Debug
You might find it useful to step through the programme with a debugger.
### A failing test
Make sure you haven't run `cargo clean` after the most recent `cargo test` or `cargo build` to guarantee that the `target/` directory exists. Use this bash script to find the name of the most recent debug build of Tantivy and run it under `rust-gdb`:
```bash
find target/debug/ -maxdepth 1 -executable -type f -name "tantivy*" -printf '%TY-%Tm-%Td %TT %p\n' | sort -r | cut -d " " -f 3 | xargs -I RECENT_DBG_TANTIVY rust-gdb RECENT_DBG_TANTIVY
```
Now that you are in `rust-gdb`, you can set breakpoints on lines and methods that match your source code and run the debug executable with flags that you normally pass to `cargo test` like this:
```bash
$gdb run --test-threads 1 --test $NAME_OF_TEST
```
### An example
By default, `rustc` compiles everything in the `examples/` directory in debug mode. This makes it easy for you to make examples to reproduce bugs:
```bash
rust-gdb target/debug/examples/$EXAMPLE_NAME
$ gdb run
```

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build: false
test_script:
- REM SET RUST_LOG=tantivy,test & cargo test --verbose
- REM SET RUST_BACKTRACE=1 & cargo run --example simple_search
- REM SET RUST_LOG=tantivy,test & cargo test --all --verbose --no-default-features --features mmap
- REM SET RUST_BACKTRACE=1 & cargo build --examples

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#!/usr/bin/env bash
# This script takes care of testing your crate
set -ex
main() {
cross build --target $TARGET
cross build --target $TARGET --release
if [ ! -z $DISABLE_TESTS ]; then
return
if [ ! -z $CODECOV ]; then
echo "Codecov"
cargo build --verbose && cargo coverage --verbose --all && bash <(curl -s https://codecov.io/bash) -s target/kcov
else
echo "Build"
cross build --target $TARGET
if [ ! -z $DISABLE_TESTS ]; then
return
fi
echo "Test"
cross test --target $TARGET --no-default-features --features mmap
cross test --target $TARGET --no-default-features --features mmap query-grammar
fi
cross test --target $TARGET
# cross test --target $TARGET --release
# cross run --target $TARGET
# cross run --target $TARGET --release
for example in $(ls examples/*.rs)
do
cargo run --example $(basename $example .rs)
done
}
# we don't run the "test phase" when doing deploys

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book

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[book]
authors = ["Paul Masurel"]
multilingual = false
src = "src"
title = "Tantivy, the user guide"

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# Summary
[Avant Propos](./avant-propos.md)
- [Segments](./basis.md)
- [Defining your schema](./schema.md)
- [Facetting](./facetting.md)
- [Innerworkings](./innerworkings.md)
- [Inverted index](./inverted_index.md)
- [Best practise](./inverted_index.md)
[Frequently Asked Questions](./faq.md)
[Examples](./examples.md)

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# Foreword, what is the scope of tantivy?
> Tantivy is a **search** engine **library** for Rust.
If you are familiar with Lucene, it's an excellent approximation to consider tantivy as Lucene for rust. tantivy is heavily inspired by Lucene's design and
they both have the same scope and targetted use cases.
If you are not familiar with Lucene, let's break down our little tagline.
- **Search** here means full-text search : fundamentally, tantivy is here to help you
identify efficiently what are the documents matching a given query in your corpus.
But modern search UI are so much more : text processing, facetting, autocomplete, fuzzy search, good
relevancy, collapsing, highlighting, spatial search.
While some of these features are not available in tantivy yet, all of these are relevant
feature requests. Tantivy's objective is to offer a solid toolbox to create the best search
experience. But keep in mind this is just a toolbox.
Which bring us to the second keyword...
- **Library** means that you will have to write code. tantivy is not an *all-in-one* server solution like elastic search for instance.
Sometimes a functionality will not be available in tantivy because it is too
specific to your use case. By design, tantivy should make it possible to extend
the available set of features using the existing rock-solid datastructures.
Most frequently this will mean writing your own `Collector`, your own `Scorer` or your own
`TokenFilter`... Some of your requirements may also be related to
something closer to architecture or operations. For instance, you may
want to build a large corpus on Hadoop, fine-tune the merge policy to keep your
index sharded in a time-wise fashion, or you may want to convert and existing
index from a different format.
Tantivy exposes a lot of low level API to do all of these things.

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# Anatomy of an index
## Straight from disk
Tantivy accesses its data using an abstracting trait called `Directory`.
In theory, one can come and override the data access logic. In practise, the
trait somewhat assumes that your data can be mapped to memory, and tantivy
seems deeply married to using `mmap` for its io [^1], and the only persisting
directory shipped with tantivy is the `MmapDirectory`.
While this design has some downsides, this greatly simplifies the source code of
tantivy. Caching is also entirely delegated to the OS.
`tantivy` works entirely (or almost) by directly reading the datastructures as they are layed on disk. As a result, the act of opening an indexing does not involve loading different datastructures from the disk into random access memory : starting a process, opening an index, and performing your first query can typically be done in a matter of milliseconds.
This is an interesting property for a command line search engine, or for some multi-tenant log search engine : spawning a new process for each new query can be a perfectly sensible solution in some use case.
In later chapters, we will discuss tantivy's inverted index data layout.
One key take away is that to achieve great performance, search indexes are extremely compact.
Of course this is crucial to reduce IO, and ensure that as much of our index can sit in RAM.
Also, whenever possible its data is accessed sequentially. Of course, this is an amazing property when tantivy needs to access the data from your spinning hard disk, but this is also
critical for performance, if your data is read from and an `SSD` or even already in your pagecache.
## Segments, and the log method
That kind of compact layout comes at one cost: it prevents our datastructures from being dynamic.
In fact, the `Directory` trait does not even allow you to modify part of a file.
To allow the addition / deletion of documents, and create the illusion that
your index is dynamic (i.e.: adding and deleting documents), tantivy uses a common database trick sometimes referred to as the *log method*.
Let's forget about deletes for a moment.
As you add documents, these documents are processed and stored in a dedicated datastructure, in a `RAM` buffer. This datastructure is not ready for search, but it is useful to receive your data and rearrange it very rapidly.
As you add documents, this buffer will reach its capacity and tantivy will transparently stop adding document to it and start converting this datastructure to its final read-only format on disk. Once written, an brand empty buffer is available to resume adding documents.
The resulting chunk of index obtained after this serialization is called a `Segment`.
> A segment is a self-contained atomic piece of index. It is identified with a UUID, and all of its files are identified using the naming scheme : `<UUID>.*`.
Which brings us to the nature of a tantivy `Index`.
> A tantivy `Index` is a collection of `Segments`.
Physically, this really just means and index is a bunch of segment files in a given `Directory`,
linked together by a `meta.json` file. This transparency can become extremely handy
to get tantivy to fit your use case:
*Example 1* You could for instance use hadoop to build a very large search index in a timely manner, copy all of the resulting segment files in the same directory and edit the `meta.json` to get a functional index.[^2]
*Example 2* You could also disable your merge policy and enforce daily segments. Removing data after one week can then be done very efficiently by just editing the `meta.json` and deleting the files associated to segment `D-7`.
# Merging
As you index more and more data, your index will accumulate more and more segments.
Having a lot of small segments is not really optimal. There is a bit of redundancy in having
all these term dictionary. Also when searching, we will need to do term lookups as many times as we have segments. It can hurt search performance a bit.
That's where merging or compacting comes into place. Tantivy will continuously consider merge
opportunities and start merging segments in the background.
# Indexing throughput, number of indexing threads
[^1]: This may eventually change.
[^2]: Be careful however. By default these files will not be considered as *managed* by tantivy. This means they will never be garbage collected by tantivy, regardless of whether they become obsolete or not.

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# Examples
- [Basic search](/examples/basic_search.html)

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# Facetting
wewew
## weeewe

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# Innerworkings

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# Inverted index

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# Defining your schema

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// # Basic Example
//
// This example covers the basic functionalities of
// tantivy.
//
// We will :
// - define our schema
// - create an index in a directory
// - index a few documents into our index
// - search for the best document matching a basic query
// - retrieve the best document's original content.
// ---
// Importing tantivy...
use tantivy::collector::TopDocs;
use tantivy::query::QueryParser;
use tantivy::schema::*;
use tantivy::{doc, Index, ReloadPolicy};
use tempfile::TempDir;
fn main() -> tantivy::Result<()> {
// Let's create a temporary directory for the
// sake of this example
let index_path = TempDir::new()?;
// # Defining the schema
//
// The Tantivy index requires a very strict schema.
// The schema declares which fields are in the index,
// and for each field, its type and "the way it should
// be indexed".
// First we need to define a schema ...
let mut schema_builder = Schema::builder();
// Our first field is title.
// We want full-text search for it, and we also want
// to be able to retrieve the document after the search.
//
// `TEXT | STORED` is some syntactic sugar to describe
// that.
//
// `TEXT` means the field should be tokenized and indexed,
// along with its term frequency and term positions.
//
// `STORED` means that the field will also be saved
// in a compressed, row-oriented key-value store.
// This store is useful for reconstructing the
// documents that were selected during the search phase.
schema_builder.add_text_field("title", TEXT | STORED);
// Our second field is body.
// We want full-text search for it, but we do not
// need to be able to be able to retrieve it
// for our application.
//
// We can make our index lighter by omitting the `STORED` flag.
schema_builder.add_text_field("body", TEXT);
let schema = schema_builder.build();
// # Indexing documents
//
// Let's create a brand new index.
//
// This will actually just save a meta.json
// with our schema in the directory.
let index = Index::create_in_dir(&index_path, schema.clone())?;
// To insert a document we will need an index writer.
// There must be only one writer at a time.
// This single `IndexWriter` is already
// multithreaded.
//
// Here we give tantivy a budget of `50MB`.
// Using a bigger heap for the indexer may increase
// throughput, but 50 MB is already plenty.
let mut index_writer = index.writer(50_000_000)?;
// Let's index our documents!
// We first need a handle on the title and the body field.
// ### Adding documents
//
// We can create a document manually, by setting the fields
// one by one in a Document object.
let title = schema.get_field("title").unwrap();
let body = schema.get_field("body").unwrap();
let mut old_man_doc = Document::default();
old_man_doc.add_text(title, "The Old Man and the Sea");
old_man_doc.add_text(
body,
"He was an old man who fished alone in a skiff in the Gulf Stream and \
he had gone eighty-four days now without taking a fish.",
);
// ... and add it to the `IndexWriter`.
index_writer.add_document(old_man_doc);
// For convenience, tantivy also comes with a macro to
// reduce the boilerplate above.
index_writer.add_document(doc!(
title => "Of Mice and Men",
body => "A few miles south of Soledad, the Salinas River drops in close to the hillside \
bank and runs deep and green. The water is warm too, for it has slipped twinkling \
over the yellow sands in the sunlight before reaching the narrow pool. On one \
side of the river the golden foothill slopes curve up to the strong and rocky \
Gabilan Mountains, but on the valley side the water is lined with trees—willows \
fresh and green with every spring, carrying in their lower leaf junctures the \
debris of the winter’s flooding; and sycamores with mottled, white, recumbent \
limbs and branches that arch over the pool"
));
index_writer.add_document(doc!(
title => "Of Mice and Men",
body => "A few miles south of Soledad, the Salinas River drops in close to the hillside \
bank and runs deep and green. The water is warm too, for it has slipped twinkling \
over the yellow sands in the sunlight before reaching the narrow pool. On one \
side of the river the golden foothill slopes curve up to the strong and rocky \
Gabilan Mountains, but on the valley side the water is lined with trees—willows \
fresh and green with every spring, carrying in their lower leaf junctures the \
debris of the winter’s flooding; and sycamores with mottled, white, recumbent \
limbs and branches that arch over the pool"
));
// Multivalued field just need to be repeated.
index_writer.add_document(doc!(
title => "Frankenstein",
title => "The Modern Prometheus",
body => "You will rejoice to hear that no disaster has accompanied the commencement of an \
enterprise which you have regarded with such evil forebodings. I arrived here \
yesterday, and my first task is to assure my dear sister of my welfare and \
increasing confidence in the success of my undertaking."
));
// This is an example, so we will only index 3 documents
// here. You can check out tantivy's tutorial to index
// the English wikipedia. Tantivy's indexing is rather fast.
// Indexing 5 million articles of the English wikipedia takes
// around 3 minutes on my computer!
// ### Committing
//
// At this point our documents are not searchable.
//
//
// We need to call `.commit()` explicitly to force the
// `index_writer` to finish processing the documents in the queue,
// flush the current index to the disk, and advertise
// the existence of new documents.
//
// This call is blocking.
index_writer.commit()?;
// If `.commit()` returns correctly, then all of the
// documents that have been added are guaranteed to be
// persistently indexed.
//
// In the scenario of a crash or a power failure,
// tantivy behaves as if it has rolled back to its last
// commit.
// # Searching
//
// ### Searcher
//
// A reader is required first in order to search an index.
// It acts as a `Searcher` pool that reloads itself,
// depending on a `ReloadPolicy`.
//
// For a search server you will typically create one reader for the entire lifetime of your
// program, and acquire a new searcher for every single request.
//
// In the code below, we rely on the 'ON_COMMIT' policy: the reader
// will reload the index automatically after each commit.
let reader = index
.reader_builder()
.reload_policy(ReloadPolicy::OnCommit)
.try_into()?;
// We now need to acquire a searcher.
//
// A searcher points to a snapshotted, immutable version of the index.
//
// Some search experience might require more than
// one query. Using the same searcher ensures that all of these queries will run on the
// same version of the index.
//
// Acquiring a `searcher` is very cheap.
//
// You should acquire a searcher every time you start processing a request and
// and release it right after your query is finished.
let searcher = reader.searcher();
// ### Query
// The query parser can interpret human queries.
// Here, if the user does not specify which
// field they want to search, tantivy will search
// in both title and body.
let query_parser = QueryParser::for_index(&index, vec![title, body]);
// `QueryParser` may fail if the query is not in the right
// format. For user facing applications, this can be a problem.
// A ticket has been opened regarding this problem.
let query = query_parser.parse_query("sea whale")?;
// A query defines a set of documents, as
// well as the way they should be scored.
//
// A query created by the query parser is scored according
// to a metric called Tf-Idf, and will consider
// any document matching at least one of our terms.
// ### Collectors
//
// We are not interested in all of the documents but
// only in the top 10. Keeping track of our top 10 best documents
// is the role of the `TopDocs` collector.
// We can now perform our query.
let top_docs = searcher.search(&query, &TopDocs::with_limit(10))?;
// The actual documents still need to be
// retrieved from Tantivy's store.
//
// Since the body field was not configured as stored,
// the document returned will only contain
// a title.
for (_score, doc_address) in top_docs {
let retrieved_doc = searcher.doc(doc_address)?;
println!("{}", schema.to_json(&retrieved_doc));
}
Ok(())
}

191
examples/custom_collector.rs Normal file
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@@ -0,0 +1,191 @@
// # Custom collector example
//
// This example shows how you can implement your own
// collector. As an example, we will compute a collector
// that computes the standard deviation of a given fast field.
//
// Of course, you can have a look at the tantivy's built-in collectors
// such as the `CountCollector` for more examples.
// ---
// Importing tantivy...
use tantivy::collector::{Collector, SegmentCollector};
use tantivy::fastfield::FastFieldReader;
use tantivy::query::QueryParser;
use tantivy::schema::Field;
use tantivy::schema::{Schema, FAST, INDEXED, TEXT};
use tantivy::{doc, Index, Score, SegmentReader, TantivyError};
#[derive(Default)]
struct Stats {
count: usize,
sum: f64,
squared_sum: f64,
}
impl Stats {
pub fn count(&self) -> usize {
self.count
}
pub fn mean(&self) -> f64 {
self.sum / (self.count as f64)
}
fn square_mean(&self) -> f64 {
self.squared_sum / (self.count as f64)
}
pub fn standard_deviation(&self) -> f64 {
let mean = self.mean();
(self.square_mean() - mean * mean).sqrt()
}
fn non_zero_count(self) -> Option<Stats> {
if self.count == 0 {
None
} else {
Some(self)
}
}
}
struct StatsCollector {
field: Field,
}
impl StatsCollector {
fn with_field(field: Field) -> StatsCollector {
StatsCollector { field }
}
}
impl Collector for StatsCollector {
// That's the type of our result.
// Our standard deviation will be a float.
type Fruit = Option<Stats>;
type Child = StatsSegmentCollector;
fn for_segment(
&self,
_segment_local_id: u32,
segment_reader: &SegmentReader,
) -> tantivy::Result<StatsSegmentCollector> {
let fast_field_reader = segment_reader
.fast_fields()
.u64(self.field)
.ok_or_else(|| {
let field_name = segment_reader.schema().get_field_name(self.field);
TantivyError::SchemaError(format!(
"Field {:?} is not a u64 fast field.",
field_name
))
})?;
Ok(StatsSegmentCollector {
fast_field_reader,
stats: Stats::default(),
})
}
fn requires_scoring(&self) -> bool {
// this collector does not care about score.
false
}
fn merge_fruits(&self, segment_stats: Vec<Option<Stats>>) -> tantivy::Result<Option<Stats>> {
let mut stats = Stats::default();
for segment_stats_opt in segment_stats {
if let Some(segment_stats) = segment_stats_opt {
stats.count += segment_stats.count;
stats.sum += segment_stats.sum;
stats.squared_sum += segment_stats.squared_sum;
}
}
Ok(stats.non_zero_count())
}
}
struct StatsSegmentCollector {
fast_field_reader: FastFieldReader<u64>,
stats: Stats,
}
impl SegmentCollector for StatsSegmentCollector {
type Fruit = Option<Stats>;
fn collect(&mut self, doc: u32, _score: Score) {
let value = self.fast_field_reader.get(doc) as f64;
self.stats.count += 1;
self.stats.sum += value;
self.stats.squared_sum += value * value;
}
fn harvest(self) -> <Self as SegmentCollector>::Fruit {
self.stats.non_zero_count()
}
}
fn main() -> tantivy::Result<()> {
// # Defining the schema
//
// The Tantivy index requires a very strict schema.
// The schema declares which fields are in the index,
// and for each field, its type and "the way it should
// be indexed".
// first we need to define a schema ...
let mut schema_builder = Schema::builder();
// We'll assume a fictional index containing
// products, and with a name, a description, and a price.
let product_name = schema_builder.add_text_field("name", TEXT);
let product_description = schema_builder.add_text_field("description", TEXT);
let price = schema_builder.add_u64_field("price", INDEXED | FAST);
let schema = schema_builder.build();
// # Indexing documents
//
// Lets index a bunch of fake documents for the sake of
// this example.
let index = Index::create_in_ram(schema.clone());
let mut index_writer = index.writer(50_000_000)?;
index_writer.add_document(doc!(
product_name => "Super Broom 2000",
product_description => "While it is ok for short distance travel, this broom \
was designed quiditch. It will up your game.",
price => 30_200u64
));
index_writer.add_document(doc!(
product_name => "Turbulobroom",
product_description => "You might have heard of this broom before : it is the sponsor of the Wales team.\
You'll enjoy its sharp turns, and rapid acceleration",
price => 29_240u64
));
index_writer.add_document(doc!(
product_name => "Broomio",
product_description => "Great value for the price. This broom is a market favorite",
price => 21_240u64
));
index_writer.add_document(doc!(
product_name => "Whack a Mole",
product_description => "Prime quality bat.",
price => 5_200u64
));
index_writer.commit()?;
let reader = index.reader()?;
let searcher = reader.searcher();
let query_parser = QueryParser::for_index(&index, vec![product_name, product_description]);
// here we want to get a hit on the 'ken' in Frankenstein
let query = query_parser.parse_query("broom")?;
if let Some(stats) = searcher.search(&query, &StatsCollector::with_field(price))? {
println!("count: {}", stats.count());
println!("mean: {}", stats.mean());
println!("standard deviation: {}", stats.standard_deviation());
}
Ok(())
}

198
examples/custom_tokenizer.rs
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@@ -1,27 +1,14 @@
extern crate tantivy;
extern crate tempdir;
#[macro_use]
extern crate serde_json;
use std::path::Path;
use tantivy::collector::TopCollector;
// # Defining a tokenizer pipeline
//
// In this example, we'll see how to define a tokenizer pipeline
// by aligning a bunch of `TokenFilter`.
use tantivy::collector::TopDocs;
use tantivy::query::QueryParser;
use tantivy::schema::*;
use tantivy::tokenizer::NgramTokenizer;
use tantivy::Index;
use tempdir::TempDir;
use tantivy::{doc, Index};
fn main() {
// Let's create a temporary directory for the
// sake of this example
if let Ok(dir) = TempDir::new("tantivy_token_example_dir") {
run_example(dir.path()).unwrap();
dir.close().unwrap();
}
}
fn run_example(index_path: &Path) -> tantivy::Result<()> {
fn main() -> tantivy::Result<()> {
// # Defining the schema
//
// The Tantivy index requires a very strict schema.
@@ -30,7 +17,7 @@ fn run_example(index_path: &Path) -> tantivy::Result<()> {
// be indexed".
// first we need to define a schema ...
let mut schema_builder = SchemaBuilder::default();
let mut schema_builder = Schema::builder();
// Our first field is title.
// In this example we want to use NGram searching
@@ -42,7 +29,7 @@ fn run_example(index_path: &Path) -> tantivy::Result<()> {
let text_options = TextOptions::default()
.set_indexing_options(text_field_indexing)
.set_stored();
schema_builder.add_text_field("title", text_options);
let title = schema_builder.add_text_field("title", text_options);
// Our second field is body.
// We want full-text search for it, but we do not
@@ -51,17 +38,17 @@ fn run_example(index_path: &Path) -> tantivy::Result<()> {
//
// We can make our index lighter and
// by omitting `STORED` flag.
schema_builder.add_text_field("body", TEXT);
let body = schema_builder.add_text_field("body", TEXT);
let schema = schema_builder.build();
// # Indexing documents
//
// Let's create a brand new index.
//
// This will actually just save a meta.json
// with our schema in the directory.
let index = Index::create_in_dir(index_path, schema.clone())?;
// To simplify we will work entirely in RAM.
// This is not what you want in reality, but it is very useful
// for your unit tests... Or this example.
let index = Index::create_in_ram(schema.clone());
// here we are registering our custome tokenizer
// this will store tokens of 3 characters each
@@ -77,102 +64,33 @@ fn run_example(index_path: &Path) -> tantivy::Result<()> {
// Here we use a buffer of 50MB per thread. Using a bigger
// heap for the indexer can increase its throughput.
let mut index_writer = index.writer(50_000_000)?;
// Let's index our documents!
// We first need a handle on the title and the body field.
// ### Create a document "manually".
//
// We can create a document manually, by setting the fields
// one by one in a Document object.
let title = schema.get_field("title").unwrap();
let body = schema.get_field("body").unwrap();
let mut old_man_doc = Document::default();
old_man_doc.add_text(title, "The Old Man and the Sea");
old_man_doc.add_text(
body,
"He was an old man who fished alone in a skiff in the Gulf Stream and \
he had gone eighty-four days now without taking a fish.",
);
// ... and add it to the `IndexWriter`.
index_writer.add_document(old_man_doc);
// ### Create a document directly from json.
//
// Alternatively, we can use our schema to parse a
// document object directly from json.
// The document is a string, but we use the `json` macro
// from `serde_json` for the convenience of multi-line support.
let json = json!({
"title": "Of Mice and Men",
"body": "A few miles south of Soledad, the Salinas River drops in close to the hillside \
bank and runs deep and green. The water is warm too, for it has slipped twinkling \
over the yellow sands in the sunlight before reaching the narrow pool. On one \
side of the river the golden foothill slopes curve up to the strong and rocky \
Gabilan Mountains, but on the valley side the water is lined with trees—willows \
fresh and green with every spring, carrying in their lower leaf junctures the \
debris of the winter’s flooding; and sycamores with mottled, white, recumbent \
limbs and branches that arch over the pool"
});
let mice_and_men_doc = schema.parse_document(&json.to_string())?;
index_writer.add_document(mice_and_men_doc);
// Multi-valued field are allowed, they are
// expressed in JSON by an array.
// The following document has two titles.
let json = json!({
"title": ["Frankenstein", "The Modern Prometheus"],
"body": "You will rejoice to hear that no disaster has accompanied the commencement of an \
enterprise which you have regarded with such evil forebodings. I arrived here \
yesterday, and my first task is to assure my dear sister of my welfare and \
increasing confidence in the success of my undertaking."
});
let frankenstein_doc = schema.parse_document(&json.to_string())?;
index_writer.add_document(frankenstein_doc);
// This is an example, so we will only index 3 documents
// here. You can check out tantivy's tutorial to index
// the English wikipedia. Tantivy's indexing is rather fast.
// Indexing 5 million articles of the English wikipedia takes
// around 4 minutes on my computer!
// ### Committing
//
// At this point our documents are not searchable.
//
//
// We need to call .commit() explicitly to force the
// index_writer to finish processing the documents in the queue,
// flush the current index to the disk, and advertise
// the existence of new documents.
//
// This call is blocking.
index_writer.add_document(doc!(
title => "The Old Man and the Sea",
body => "He was an old man who fished alone in a skiff in the Gulf Stream and \
he had gone eighty-four days now without taking a fish."
));
index_writer.add_document(doc!(
title => "Of Mice and Men",
body => r#"A few miles south of Soledad, the Salinas River drops in close to the hillside
bank and runs deep and green. The water is warm too, for it has slipped twinkling
over the yellow sands in the sunlight before reaching the narrow pool. On one
side of the river the golden foothill slopes curve up to the strong and rocky
Gabilan Mountains, but on the valley side the water is lined with trees—willows
fresh and green with every spring, carrying in their lower leaf junctures the
debris of the winter’s flooding; and sycamores with mottled, white, recumbent
limbs and branches that arch over the pool"#
));
index_writer.add_document(doc!(
title => "Frankenstein",
body => r#"You will rejoice to hear that no disaster has accompanied the commencement of an
enterprise which you have regarded with such evil forebodings. I arrived here
yesterday, and my first task is to assure my dear sister of my welfare and
increasing confidence in the success of my undertaking."#
));
index_writer.commit()?;
// If `.commit()` returns correctly, then all of the
// documents that have been added are guaranteed to be
// persistently indexed.
//
// In the scenario of a crash or a power failure,
// tantivy behaves as if has rolled back to its last
// commit.
// # Searching
//
// Let's search our index. Start by reloading
// searchers in the index. This should be done
// after every commit().
index.load_searchers()?;
// Afterwards create one (or more) searchers.
//
// You should create a searcher
// every time you start a "search query".
let searcher = index.searcher();
let reader = index.reader()?;
let searcher = reader.searcher();
// The query parser can interpret human queries.
// Here, if the user does not specify which
@@ -183,44 +101,12 @@ fn run_example(index_path: &Path) -> tantivy::Result<()> {
// here we want to get a hit on the 'ken' in Frankenstein
let query = query_parser.parse_query("ken")?;
// A query defines a set of documents, as
// well as the way they should be scored.
//
// A query created by the query parser is scored according
// to a metric called Tf-Idf, and will consider
// any document matching at least one of our terms.
let top_docs = searcher.search(&query, &TopDocs::with_limit(10))?;
// ### Collectors
//
// We are not interested in all of the documents but
// only in the top 10. Keeping track of our top 10 best documents
// is the role of the TopCollector.
let mut top_collector = TopCollector::with_limit(10);
// We can now perform our query.
searcher.search(&*query, &mut top_collector)?;
// Our top collector now contains the 10
// most relevant doc ids...
let doc_addresses = top_collector.docs();
// The actual documents still need to be
// retrieved from Tantivy's store.
//
// Since the body field was not configured as stored,
// the document returned will only contain
// a title.
for doc_address in doc_addresses {
let retrieved_doc = searcher.doc(&doc_address)?;
for (_, doc_address) in top_docs {
let retrieved_doc = searcher.doc(doc_address)?;
println!("{}", schema.to_json(&retrieved_doc));
}
// Wait for indexing and merging threads to shut down.
// Usually this isn't needed, but in `main` we try to
// delete the temporary directory and that fails on
// Windows if the files are still open.
index_writer.wait_merging_threads()?;
Ok(())
}

143
examples/deleting_updating_documents.rs Normal file
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@@ -0,0 +1,143 @@
// # Deleting and Updating (?) documents
//
// This example explains how to delete and update documents.
// In fact there is actually no such thing as an update in tantivy.
//
// To update a document, you need to delete a document and then reinsert
// its new version.
//
// ---
// Importing tantivy...
use tantivy::collector::TopDocs;
use tantivy::query::TermQuery;
use tantivy::schema::*;
use tantivy::{doc, Index, IndexReader};
// A simple helper function to fetch a single document
// given its id from our index.
// It will be helpful to check our work.
fn extract_doc_given_isbn(
reader: &IndexReader,
isbn_term: &Term,
) -> tantivy::Result<Option<Document>> {
let searcher = reader.searcher();
// This is the simplest query you can think of.
// It matches all of the documents containing a specific term.
//
// The second argument is here to tell we don't care about decoding positions,
// or term frequencies.
let term_query = TermQuery::new(isbn_term.clone(), IndexRecordOption::Basic);
let top_docs = searcher.search(&term_query, &TopDocs::with_limit(1))?;
if let Some((_score, doc_address)) = top_docs.first() {
let doc = searcher.doc(*doc_address)?;
Ok(Some(doc))
} else {
// no doc matching this ID.
Ok(None)
}
}
fn main() -> tantivy::Result<()> {
// # Defining the schema
//
// Check out the *basic_search* example if this makes
// small sense to you.
let mut schema_builder = Schema::builder();
// Tantivy does not really have a notion of primary id.
// This may change in the future.
//
// Still, we can create a `isbn` field and use it as an id. This
// field can be `u64` or a `text`, depending on your use case.
// It just needs to be indexed.
//
// If it is `text`, let's make sure to keep it `raw` and let's avoid
// running any text processing on it.
// This is done by associating this field to the tokenizer named `raw`.
// Rather than building our [`TextOptions`](//docs.rs/tantivy/~0/tantivy/schema/struct.TextOptions.html) manually,
// We use the `STRING` shortcut. `STRING` stands for indexed (without term frequency or positions)
// and untokenized.
//
// Because we also want to be able to see this `id` in our returned documents,
// we also mark the field as stored.
let isbn = schema_builder.add_text_field("isbn", STRING | STORED);
let title = schema_builder.add_text_field("title", TEXT | STORED);
let schema = schema_builder.build();
let index = Index::create_in_ram(schema.clone());
let mut index_writer = index.writer(50_000_000)?;
// Let's add a couple of documents, for the sake of the example.
let mut old_man_doc = Document::default();
old_man_doc.add_text(title, "The Old Man and the Sea");
index_writer.add_document(doc!(
isbn => "978-0099908401",
title => "The old Man and the see"
));
index_writer.add_document(doc!(
isbn => "978-0140177398",
title => "Of Mice and Men",
));
index_writer.add_document(doc!(
title => "Frankentein", //< Oops there is a typo here.
isbn => "978-9176370711",
));
index_writer.commit()?;
let reader = index.reader()?;
let frankenstein_isbn = Term::from_field_text(isbn, "978-9176370711");
// Oops our frankenstein doc seems mispelled
let frankenstein_doc_misspelled = extract_doc_given_isbn(&reader, &frankenstein_isbn)?.unwrap();
assert_eq!(
schema.to_json(&frankenstein_doc_misspelled),
r#"{"isbn":["978-9176370711"],"title":["Frankentein"]}"#,
);
// # Update = Delete + Insert
//
// Here we will want to update the typo in the `Frankenstein` book.
//
// Tantivy does not handle updates directly, we need to delete
// and reinsert the document.
//
// This can be complicated as it means you need to have access
// to the entire document. It is good practise to integrate tantivy
// with a key value store for this reason.
//
// To remove one of the document, we just call `delete_term`
// on its id.
//
// Note that `tantivy` does nothing to enforce the idea that
// there is only one document associated to this id.
//
// Also you might have noticed that we apply the delete before
// having committed. This does not matter really...
index_writer.delete_term(frankenstein_isbn.clone());
// We now need to reinsert our document without the typo.
index_writer.add_document(doc!(
title => "Frankenstein",
isbn => "978-9176370711",
));
// You are guaranteed that your clients will only observe your index in
// the state it was in after a commit.
// In this example, your search engine will at no point be missing the *Frankenstein* document.
// Everything happened as if the document was updated.
index_writer.commit()?;
// We reload our searcher to make our change available to clients.
reader.reload()?;
// No more typo!
let frankenstein_new_doc = extract_doc_given_isbn(&reader, &frankenstein_isbn)?.unwrap();
assert_eq!(
schema.to_json(&frankenstein_new_doc),
r#"{"isbn":["978-9176370711"],"title":["Frankenstein"]}"#,
);
Ok(())
}

112
examples/faceted_search.rs Normal file
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// # Basic Example
//
// This example covers the basic functionalities of
// tantivy.
//
// We will :
// - define our schema
// = create an index in a directory
// - index few documents in our index
// - search for the best document matchings "sea whale"
// - retrieve the best document original content.
// ---
// Importing tantivy...
use tantivy::collector::FacetCollector;
use tantivy::query::{AllQuery, TermQuery};
use tantivy::schema::*;
use tantivy::{doc, Index};
fn main() -> tantivy::Result<()> {
// Let's create a temporary directory for the sake of this example
let mut schema_builder = Schema::builder();
let name = schema_builder.add_text_field("felin_name", TEXT | STORED);
// this is our faceted field: its scientific classification
let classification = schema_builder.add_facet_field("classification");
let schema = schema_builder.build();
let index = Index::create_in_ram(schema);
let mut index_writer = index.writer(30_000_000)?;
// For convenience, tantivy also comes with a macro to
// reduce the boilerplate above.
index_writer.add_document(doc!(
name => "Cat",
classification => Facet::from("/Felidae/Felinae/Felis")
));
index_writer.add_document(doc!(
name => "Canada lynx",
classification => Facet::from("/Felidae/Felinae/Lynx")
));
index_writer.add_document(doc!(
name => "Cheetah",
classification => Facet::from("/Felidae/Felinae/Acinonyx")
));
index_writer.add_document(doc!(
name => "Tiger",
classification => Facet::from("/Felidae/Pantherinae/Panthera")
));
index_writer.add_document(doc!(
name => "Lion",
classification => Facet::from("/Felidae/Pantherinae/Panthera")
));
index_writer.add_document(doc!(
name => "Jaguar",
classification => Facet::from("/Felidae/Pantherinae/Panthera")
));
index_writer.add_document(doc!(
name => "Sunda clouded leopard",
classification => Facet::from("/Felidae/Pantherinae/Neofelis")
));
index_writer.add_document(doc!(
name => "Fossa",
classification => Facet::from("/Eupleridae/Cryptoprocta")
));
index_writer.commit()?;
let reader = index.reader()?;
let searcher = reader.searcher();
{
let mut facet_collector = FacetCollector::for_field(classification);
facet_collector.add_facet("/Felidae");
let facet_counts = searcher.search(&AllQuery, &facet_collector)?;
// This lists all of the facet counts, right below "/Felidae".
let facets: Vec<(&Facet, u64)> = facet_counts.get("/Felidae").collect();
assert_eq!(
facets,
vec![
(&Facet::from("/Felidae/Felinae"), 3),
(&Facet::from("/Felidae/Pantherinae"), 4),
]
);
}
// Facets are also searchable.
//
// For instance a common UI pattern is to allow the user someone to click on a facet link
// (e.g: `Pantherinae`) to drill down and filter the current result set with this subfacet.
//
// The search would then look as follows.
// Check the reference doc for different ways to create a `Facet` object.
{
let facet = Facet::from_text("/Felidae/Pantherinae");
let facet_term = Term::from_facet(classification, &facet);
let facet_term_query = TermQuery::new(facet_term, IndexRecordOption::Basic);
let mut facet_collector = FacetCollector::for_field(classification);
facet_collector.add_facet("/Felidae/Pantherinae");
let facet_counts = searcher.search(&facet_term_query, &facet_collector)?;
let facets: Vec<(&Facet, u64)> = facet_counts.get("/Felidae/Pantherinae").collect();
assert_eq!(
facets,
vec![
(&Facet::from("/Felidae/Pantherinae/Neofelis"), 1),
(&Facet::from("/Felidae/Pantherinae/Panthera"), 3),
]
);
}
Ok(())
}

98
examples/faceted_search_with_tweaked_score.rs Normal file
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use std::collections::HashSet;
use tantivy::collector::TopDocs;
use tantivy::doc;
use tantivy::query::BooleanQuery;
use tantivy::schema::*;
use tantivy::{DocId, Index, Score, SegmentReader};
fn main() -> tantivy::Result<()> {
let mut schema_builder = Schema::builder();
let title = schema_builder.add_text_field("title", STORED);
let ingredient = schema_builder.add_facet_field("ingredient");
let schema = schema_builder.build();
let index = Index::create_in_ram(schema.clone());
let mut index_writer = index.writer(30_000_000)?;
index_writer.add_document(doc!(
title => "Fried egg",
ingredient => Facet::from("/ingredient/egg"),
ingredient => Facet::from("/ingredient/oil"),
));
index_writer.add_document(doc!(
title => "Scrambled egg",
ingredient => Facet::from("/ingredient/egg"),
ingredient => Facet::from("/ingredient/butter"),
ingredient => Facet::from("/ingredient/milk"),
ingredient => Facet::from("/ingredient/salt"),
));
index_writer.add_document(doc!(
title => "Egg rolls",
ingredient => Facet::from("/ingredient/egg"),
ingredient => Facet::from("/ingredient/garlic"),
ingredient => Facet::from("/ingredient/salt"),
ingredient => Facet::from("/ingredient/oil"),
ingredient => Facet::from("/ingredient/tortilla-wrap"),
ingredient => Facet::from("/ingredient/mushroom"),
));
index_writer.commit()?;
let reader = index.reader()?;
let searcher = reader.searcher();
{
let facets = vec![
Facet::from("/ingredient/egg"),
Facet::from("/ingredient/oil"),
Facet::from("/ingredient/garlic"),
Facet::from("/ingredient/mushroom"),
];
let query = BooleanQuery::new_multiterms_query(
facets
.iter()
.map(|key| Term::from_facet(ingredient, &key))
.collect(),
);
let top_docs_by_custom_score =
TopDocs::with_limit(2).tweak_score(move |segment_reader: &SegmentReader| {
let ingredient_reader = segment_reader.facet_reader(ingredient).unwrap();
let facet_dict = ingredient_reader.facet_dict();
let query_ords: HashSet<u64> = facets
.iter()
.filter_map(|key| facet_dict.term_ord(key.encoded_str()))
.collect();
let mut facet_ords_buffer: Vec<u64> = Vec::with_capacity(20);
move |doc: DocId, original_score: Score| {
ingredient_reader.facet_ords(doc, &mut facet_ords_buffer);
let missing_ingredients = facet_ords_buffer
.iter()
.filter(|ord| !query_ords.contains(ord))
.count();
let tweak = 1.0 / 4_f32.powi(missing_ingredients as i32);
original_score * tweak
}
});
let top_docs = searcher.search(&query, &top_docs_by_custom_score)?;
let titles: Vec<String> = top_docs
.iter()
.map(|(_, doc_id)| {
searcher
.doc(*doc_id)
.unwrap()
.get_first(title)
.unwrap()
.text()
.unwrap()
.to_owned()
})
.collect();
assert_eq!(titles, vec!["Fried egg", "Egg rolls"]);
}
Ok(())
}

2
examples/generate_html.sh
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@@ -1,2 +0,0 @@
#!/bin/bash
docco simple_search.rs -o html

518
examples/html/docco.css
View File

@@ -1,518 +0,0 @@
/*--------------------- Typography ----------------------------*/
@font-face {
font-family: 'aller-light';
src: url('public/fonts/aller-light.eot');
src: url('public/fonts/aller-light.eot?#iefix') format('embedded-opentype'),
url('public/fonts/aller-light.woff') format('woff'),
url('public/fonts/aller-light.ttf') format('truetype');
font-weight: normal;
font-style: normal;
}
@font-face {
font-family: 'aller-bold';
src: url('public/fonts/aller-bold.eot');
src: url('public/fonts/aller-bold.eot?#iefix') format('embedded-opentype'),
url('public/fonts/aller-bold.woff') format('woff'),
url('public/fonts/aller-bold.ttf') format('truetype');
font-weight: normal;
font-style: normal;
}
@font-face {
font-family: 'roboto-black';
src: url('public/fonts/roboto-black.eot');
src: url('public/fonts/roboto-black.eot?#iefix') format('embedded-opentype'),
url('public/fonts/roboto-black.woff') format('woff'),
url('public/fonts/roboto-black.ttf') format('truetype');
font-weight: normal;
font-style: normal;
}
/*--------------------- Layout ----------------------------*/
html { height: 100%; }
body {
font-family: "aller-light";
font-size: 14px;
line-height: 18px;
color: #30404f;
margin: 0; padding: 0;
height:100%;
}
#container { min-height: 100%; }
a {
color: #000;
}
b, strong {
font-weight: normal;
font-family: "aller-bold";
}
p {
margin: 15px 0 0px;
}
.annotation ul, .annotation ol {
margin: 25px 0;
}
.annotation ul li, .annotation ol li {
font-size: 14px;
line-height: 18px;
margin: 10px 0;
}
h1, h2, h3, h4, h5, h6 {
color: #112233;
line-height: 1em;
font-weight: normal;
font-family: "roboto-black";
text-transform: uppercase;
margin: 30px 0 15px 0;
}
h1 {
margin-top: 40px;
}
h2 {
font-size: 1.26em;
}
hr {
border: 0;
background: 1px #ddd;
height: 1px;
margin: 20px 0;
}
pre, tt, code {
font-size: 12px; line-height: 16px;
font-family: Menlo, Monaco, Consolas, "Lucida Console", monospace;
margin: 0; padding: 0;
}
.annotation pre {
display: block;
margin: 0;
padding: 7px 10px;
background: #fcfcfc;
-moz-box-shadow: inset 0 0 10px rgba(0,0,0,0.1);
-webkit-box-shadow: inset 0 0 10px rgba(0,0,0,0.1);
box-shadow: inset 0 0 10px rgba(0,0,0,0.1);
overflow-x: auto;
}
.annotation pre code {
border: 0;
padding: 0;
background: transparent;
}
blockquote {
border-left: 5px solid #ccc;
margin: 0;
padding: 1px 0 1px 1em;
}
.sections blockquote p {
font-family: Menlo, Consolas, Monaco, monospace;
font-size: 12px; line-height: 16px;
color: #999;
margin: 10px 0 0;
white-space: pre-wrap;
}
ul.sections {
list-style: none;
padding:0 0 5px 0;;
margin:0;
}
/*
Force border-box so that % widths fit the parent
container without overlap because of margin/padding.
More Info : http://www.quirksmode.org/css/box.html
*/
ul.sections > li > div {
-moz-box-sizing: border-box; /* firefox */
-ms-box-sizing: border-box; /* ie */
-webkit-box-sizing: border-box; /* webkit */
-khtml-box-sizing: border-box; /* konqueror */
box-sizing: border-box; /* css3 */
}
/*---------------------- Jump Page -----------------------------*/
#jump_to, #jump_page {
margin: 0;
background: white;
-webkit-box-shadow: 0 0 25px #777; -moz-box-shadow: 0 0 25px #777;
-webkit-border-bottom-left-radius: 5px; -moz-border-radius-bottomleft: 5px;
font: 16px Arial;
cursor: pointer;
text-align: right;
list-style: none;
}
#jump_to a {
text-decoration: none;
}
#jump_to a.large {
display: none;
}
#jump_to a.small {
font-size: 22px;
font-weight: bold;
color: #676767;
}
#jump_to, #jump_wrapper {
position: fixed;
right: 0; top: 0;
padding: 10px 15px;
margin:0;
}
#jump_wrapper {
display: none;
padding:0;
}
#jump_to:hover #jump_wrapper {
display: block;
}
#jump_page_wrapper{
position: fixed;
right: 0;
top: 0;
bottom: 0;
}
#jump_page {
padding: 5px 0 3px;
margin: 0 0 25px 25px;
max-height: 100%;
overflow: auto;
}
#jump_page .source {
display: block;
padding: 15px;
text-decoration: none;
border-top: 1px solid #eee;
}
#jump_page .source:hover {
background: #f5f5ff;
}
#jump_page .source:first-child {
}
/*---------------------- Low resolutions (> 320px) ---------------------*/
@media only screen and (min-width: 320px) {
.pilwrap { display: none; }
ul.sections > li > div {
display: block;
padding:5px 10px 0 10px;
}
ul.sections > li > div.annotation ul, ul.sections > li > div.annotation ol {
padding-left: 30px;
}
ul.sections > li > div.content {
overflow-x:auto;
-webkit-box-shadow: inset 0 0 5px #e5e5ee;
box-shadow: inset 0 0 5px #e5e5ee;
border: 1px solid #dedede;
margin:5px 10px 5px 10px;
padding-bottom: 5px;
}
ul.sections > li > div.annotation pre {
margin: 7px 0 7px;
padding-left: 15px;
}
ul.sections > li > div.annotation p tt, .annotation code {
background: #f8f8ff;
border: 1px solid #dedede;
font-size: 12px;
padding: 0 0.2em;
}
}
/*---------------------- (> 481px) ---------------------*/
@media only screen and (min-width: 481px) {
#container {
position: relative;
}
body {
background-color: #F5F5FF;
font-size: 15px;
line-height: 21px;
}
pre, tt, code {
line-height: 18px;
}
p, ul, ol {
margin: 0 0 15px;
}
#jump_to {
padding: 5px 10px;
}
#jump_wrapper {
padding: 0;
}
#jump_to, #jump_page {
font: 10px Arial;
text-transform: uppercase;
}
#jump_page .source {
padding: 5px 10px;
}
#jump_to a.large {
display: inline-block;
}
#jump_to a.small {
display: none;
}
#background {
position: absolute;
top: 0; bottom: 0;
width: 350px;
background: #fff;
border-right: 1px solid #e5e5ee;
z-index: -1;
}
ul.sections > li > div.annotation ul, ul.sections > li > div.annotation ol {
padding-left: 40px;
}
ul.sections > li {
white-space: nowrap;
}
ul.sections > li > div {
display: inline-block;
}
ul.sections > li > div.annotation {
max-width: 350px;
min-width: 350px;
min-height: 5px;
padding: 13px;
overflow-x: hidden;
white-space: normal;
vertical-align: top;
text-align: left;
}
ul.sections > li > div.annotation pre {
margin: 15px 0 15px;
padding-left: 15px;
}
ul.sections > li > div.content {
padding: 13px;
vertical-align: top;
border: none;
-webkit-box-shadow: none;
box-shadow: none;
}
.pilwrap {
position: relative;
display: inline;
}
.pilcrow {
font: 12px Arial;
text-decoration: none;
color: #454545;
position: absolute;
top: 3px; left: -20px;
padding: 1px 2px;
opacity: 0;
-webkit-transition: opacity 0.2s linear;
}
.for-h1 .pilcrow {
top: 47px;
}
.for-h2 .pilcrow, .for-h3 .pilcrow, .for-h4 .pilcrow {
top: 35px;
}
ul.sections > li > div.annotation:hover .pilcrow {
opacity: 1;
}
}
/*---------------------- (> 1025px) ---------------------*/
@media only screen and (min-width: 1025px) {
body {
font-size: 16px;
line-height: 24px;
}
#background {
width: 525px;
}
ul.sections > li > div.annotation {
max-width: 525px;
min-width: 525px;
padding: 10px 25px 1px 50px;
}
ul.sections > li > div.content {
padding: 9px 15px 16px 25px;
}
}
/*---------------------- Syntax Highlighting -----------------------------*/
td.linenos { background-color: #f0f0f0; padding-right: 10px; }
span.lineno { background-color: #f0f0f0; padding: 0 5px 0 5px; }
/*
github.com style (c) Vasily Polovnyov <vast@whiteants.net>
*/
pre code {
display: block; padding: 0.5em;
color: #000;
background: #f8f8ff
}
pre .hljs-comment,
pre .hljs-template_comment,
pre .hljs-diff .hljs-header,
pre .hljs-javadoc {
color: #408080;
font-style: italic
}
pre .hljs-keyword,
pre .hljs-assignment,
pre .hljs-literal,
pre .hljs-css .hljs-rule .hljs-keyword,
pre .hljs-winutils,
pre .hljs-javascript .hljs-title,
pre .hljs-lisp .hljs-title,
pre .hljs-subst {
color: #954121;
/*font-weight: bold*/
}
pre .hljs-number,
pre .hljs-hexcolor {
color: #40a070
}
pre .hljs-string,
pre .hljs-tag .hljs-value,
pre .hljs-phpdoc,
pre .hljs-tex .hljs-formula {
color: #219161;
}
pre .hljs-title,
pre .hljs-id {
color: #19469D;
}
pre .hljs-params {
color: #00F;
}
pre .hljs-javascript .hljs-title,
pre .hljs-lisp .hljs-title,
pre .hljs-subst {
font-weight: normal
}
pre .hljs-class .hljs-title,
pre .hljs-haskell .hljs-label,
pre .hljs-tex .hljs-command {
color: #458;
font-weight: bold
}
pre .hljs-tag,
pre .hljs-tag .hljs-title,
pre .hljs-rules .hljs-property,
pre .hljs-django .hljs-tag .hljs-keyword {
color: #000080;
font-weight: normal
}
pre .hljs-attribute,
pre .hljs-variable,
pre .hljs-instancevar,
pre .hljs-lisp .hljs-body {
color: #008080
}
pre .hljs-regexp {
color: #B68
}
pre .hljs-class {
color: #458;
font-weight: bold
}
pre .hljs-symbol,
pre .hljs-ruby .hljs-symbol .hljs-string,
pre .hljs-ruby .hljs-symbol .hljs-keyword,
pre .hljs-ruby .hljs-symbol .hljs-keymethods,
pre .hljs-lisp .hljs-keyword,
pre .hljs-tex .hljs-special,
pre .hljs-input_number {
color: #990073
}
pre .hljs-builtin,
pre .hljs-constructor,
pre .hljs-built_in,
pre .hljs-lisp .hljs-title {
color: #0086b3
}
pre .hljs-preprocessor,
pre .hljs-pi,
pre .hljs-doctype,
pre .hljs-shebang,
pre .hljs-cdata {
color: #999;
font-weight: bold
}
pre .hljs-deletion {
background: #fdd
}
pre .hljs-addition {
background: #dfd
}
pre .hljs-diff .hljs-change {
background: #0086b3
}
pre .hljs-chunk {
color: #aaa
}
pre .hljs-tex .hljs-formula {
opacity: 0.5;
}

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examples/html/public/stylesheets/normalize.css vendored
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/*! normalize.css v2.0.1 | MIT License | git.io/normalize */
/* ==========================================================================
HTML5 display definitions
========================================================================== */
/*
* Corrects `block` display not defined in IE 8/9.
*/
article,
aside,
details,
figcaption,
figure,
footer,
header,
hgroup,
nav,
section,
summary {
display: block;
}
/*
* Corrects `inline-block` display not defined in IE 8/9.
*/
audio,
canvas,
video {
display: inline-block;
}
/*
* Prevents modern browsers from displaying `audio` without controls.
* Remove excess height in iOS 5 devices.
*/
audio:not([controls]) {
display: none;
height: 0;
}
/*
* Addresses styling for `hidden` attribute not present in IE 8/9.
*/
[hidden] {
display: none;
}
/* ==========================================================================
Base
========================================================================== */
/*
* 1. Sets default font family to sans-serif.
* 2. Prevents iOS text size adjust after orientation change, without disabling
* user zoom.
*/
html {
font-family: sans-serif; /* 1 */
-webkit-text-size-adjust: 100%; /* 2 */
-ms-text-size-adjust: 100%; /* 2 */
}
/*
* Removes default margin.
*/
body {
margin: 0;
}
/* ==========================================================================
Links
========================================================================== */
/*
* Addresses `outline` inconsistency between Chrome and other browsers.
*/
a:focus {
outline: thin dotted;
}
/*
* Improves readability when focused and also mouse hovered in all browsers.
*/
a:active,
a:hover {
outline: 0;
}
/* ==========================================================================
Typography
========================================================================== */
/*
* Addresses `h1` font sizes within `section` and `article` in Firefox 4+,
* Safari 5, and Chrome.
*/
h1 {
font-size: 2em;
}
/*
* Addresses styling not present in IE 8/9, Safari 5, and Chrome.
*/
abbr[title] {
border-bottom: 1px dotted;
}
/*
* Addresses style set to `bolder` in Firefox 4+, Safari 5, and Chrome.
*/
b,
strong {
font-weight: bold;
}
/*
* Addresses styling not present in Safari 5 and Chrome.
*/
dfn {
font-style: italic;
}
/*
* Addresses styling not present in IE 8/9.
*/
mark {
background: #ff0;
color: #000;
}
/*
* Corrects font family set oddly in Safari 5 and Chrome.
*/
code,
kbd,
pre,
samp {
font-family: monospace, serif;
font-size: 1em;
}
/*
* Improves readability of pre-formatted text in all browsers.
*/
pre {
white-space: pre;
white-space: pre-wrap;
word-wrap: break-word;
}
/*
* Sets consistent quote types.
*/
q {
quotes: "\201C" "\201D" "\2018" "\2019";
}
/*
* Addresses inconsistent and variable font size in all browsers.
*/
small {
font-size: 80%;
}
/*
* Prevents `sub` and `sup` affecting `line-height` in all browsers.
*/
sub,
sup {
font-size: 75%;
line-height: 0;
position: relative;
vertical-align: baseline;
}
sup {
top: -0.5em;
}
sub {
bottom: -0.25em;
}
/* ==========================================================================
Embedded content
========================================================================== */
/*
* Removes border when inside `a` element in IE 8/9.
*/
img {
border: 0;
}
/*
* Corrects overflow displayed oddly in IE 9.
*/
svg:not(:root) {
overflow: hidden;
}
/* ==========================================================================
Figures
========================================================================== */
/*
* Addresses margin not present in IE 8/9 and Safari 5.
*/
figure {
margin: 0;
}
/* ==========================================================================
Forms
========================================================================== */
/*
* Define consistent border, margin, and padding.
*/
fieldset {
border: 1px solid #c0c0c0;
margin: 0 2px;
padding: 0.35em 0.625em 0.75em;
}
/*
* 1. Corrects color not being inherited in IE 8/9.
* 2. Remove padding so people aren't caught out if they zero out fieldsets.
*/
legend {
border: 0; /* 1 */
padding: 0; /* 2 */
}
/*
* 1. Corrects font family not being inherited in all browsers.
* 2. Corrects font size not being inherited in all browsers.
* 3. Addresses margins set differently in Firefox 4+, Safari 5, and Chrome
*/
button,
input,
select,
textarea {
font-family: inherit; /* 1 */
font-size: 100%; /* 2 */
margin: 0; /* 3 */
}
/*
* Addresses Firefox 4+ setting `line-height` on `input` using `!important` in
* the UA stylesheet.
*/
button,
input {
line-height: normal;
}
/*
* 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
* and `video` controls.
* 2. Corrects inability to style clickable `input` types in iOS.
* 3. Improves usability and consistency of cursor style between image-type
* `input` and others.
*/
button,
html input[type="button"], /* 1 */
input[type="reset"],
input[type="submit"] {
-webkit-appearance: button; /* 2 */
cursor: pointer; /* 3 */
}
/*
* Re-set default cursor for disabled elements.
*/
button[disabled],
input[disabled] {
cursor: default;
}
/*
* 1. Addresses box sizing set to `content-box` in IE 8/9.
* 2. Removes excess padding in IE 8/9.
*/
input[type="checkbox"],
input[type="radio"] {
box-sizing: border-box; /* 1 */
padding: 0; /* 2 */
}
/*
* 1. Addresses `appearance` set to `searchfield` in Safari 5 and Chrome.
* 2. Addresses `box-sizing` set to `border-box` in Safari 5 and Chrome
* (include `-moz` to future-proof).
*/
input[type="search"] {
-webkit-appearance: textfield; /* 1 */
-moz-box-sizing: content-box;
-webkit-box-sizing: content-box; /* 2 */
box-sizing: content-box;
}
/*
* Removes inner padding and search cancel button in Safari 5 and Chrome
* on OS X.
*/
input[type="search"]::-webkit-search-cancel-button,
input[type="search"]::-webkit-search-decoration {
-webkit-appearance: none;
}
/*
* Removes inner padding and border in Firefox 4+.
*/
button::-moz-focus-inner,
input::-moz-focus-inner {
border: 0;
padding: 0;
}
/*
* 1. Removes default vertical scrollbar in IE 8/9.
* 2. Improves readability and alignment in all browsers.
*/
textarea {
overflow: auto; /* 1 */
vertical-align: top; /* 2 */
}
/* ==========================================================================
Tables
========================================================================== */
/*
* Remove most spacing between table cells.
*/
table {
border-collapse: collapse;
border-spacing: 0;
}

542
examples/html/simple_search.html
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@@ -1,542 +0,0 @@
<!DOCTYPE html>
<html>
<head>
<title>simple_search.rs</title>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<meta name="viewport" content="width=device-width, target-densitydpi=160dpi, initial-scale=1.0; maximum-scale=1.0; user-scalable=0;">
<link rel="stylesheet" media="all" href="docco.css" />
</head>
<body>
<div id="container">
<div id="background"></div>
<ul class="sections">
<li id="title">
<div class="annotation">
<h1>simple_search.rs</h1>
</div>
</li>
<li id="section-1">
<div class="annotation">
<div class="pilwrap ">
<a class="pilcrow" href="#section-1">&#182;</a>
</div>
</div>
<div class="content"><div class='highlight'><pre><span class="hljs-keyword">extern</span> <span class="hljs-keyword">crate</span> tantivy;
<span class="hljs-keyword">extern</span> <span class="hljs-keyword">crate</span> tempdir;
<span class="hljs-meta">#[macro_use]</span>
<span class="hljs-keyword">extern</span> <span class="hljs-keyword">crate</span> serde_json;
<span class="hljs-keyword">use</span> std::path::Path;
<span class="hljs-keyword">use</span> tempdir::TempDir;
<span class="hljs-keyword">use</span> tantivy::Index;
<span class="hljs-keyword">use</span> tantivy::schema::*;
<span class="hljs-keyword">use</span> tantivy::collector::TopCollector;
<span class="hljs-keyword">use</span> tantivy::query::QueryParser;
<span class="hljs-function"><span class="hljs-keyword">fn</span> <span class="hljs-title">main</span></span>() {</pre></div></div>
</li>
<li id="section-2">
<div class="annotation">
<div class="pilwrap ">
<a class="pilcrow" href="#section-2">&#182;</a>
</div>
<p>Let’s create a temporary directory for the
sake of this example</p>
</div>
<div class="content"><div class='highlight'><pre> <span class="hljs-keyword">if</span> <span class="hljs-keyword">let</span> <span class="hljs-literal">Ok</span>(dir) = TempDir::new(<span class="hljs-string">"tantivy_example_dir"</span>) {
run_example(dir.path()).unwrap();
dir.close().unwrap();
}
}
<span class="hljs-function"><span class="hljs-keyword">fn</span> <span class="hljs-title">run_example</span></span>(index_path: &amp;Path) -&gt; tantivy::<span class="hljs-built_in">Result</span>&lt;()&gt; {</pre></div></div>
</li>
<li id="section-3">
<div class="annotation">
<div class="pilwrap ">
<a class="pilcrow" href="#section-3">&#182;</a>
</div>
<h1 id="defining-the-schema">Defining the schema</h1>
<p>The Tantivy index requires a very strict schema.
The schema declares which fields are in the index,
and for each field, its type and “the way it should
be indexed”.</p>
</div>
</li>
<li id="section-4">
<div class="annotation">
<div class="pilwrap ">
<a class="pilcrow" href="#section-4">&#182;</a>
</div>
<p>first we need to define a schema …</p>
</div>
<div class="content"><div class='highlight'><pre> <span class="hljs-keyword">let</span> <span class="hljs-keyword">mut</span> schema_builder = SchemaBuilder::<span class="hljs-keyword">default</span>();</pre></div></div>
</li>
<li id="section-5">
<div class="annotation">
<div class="pilwrap ">
<a class="pilcrow" href="#section-5">&#182;</a>
</div>
<p>Our first field is title.
We want full-text search for it, and we also want
to be able to retrieve the document after the search.</p>
<p>TEXT | STORED is some syntactic sugar to describe
that.</p>
<p><code>TEXT</code> means the field should be tokenized and indexed,
along with its term frequency and term positions.</p>
<p><code>STORED</code> means that the field will also be saved
in a compressed, row-oriented key-value store.
This store is useful to reconstruct the
documents that were selected during the search phase.</p>
</div>
<div class="content"><div class='highlight'><pre> schema_builder.add_text_field(<span class="hljs-string">"title"</span>, TEXT | STORED);</pre></div></div>
</li>
<li id="section-6">
<div class="annotation">
<div class="pilwrap ">
<a class="pilcrow" href="#section-6">&#182;</a>
</div>
<p>Our second field is body.
We want full-text search for it, but we do not
need to be able to be able to retrieve it
for our application. </p>
<p>We can make our index lighter and
by omitting <code>STORED</code> flag.</p>
</div>
<div class="content"><div class='highlight'><pre> schema_builder.add_text_field(<span class="hljs-string">"body"</span>, TEXT);
<span class="hljs-keyword">let</span> schema = schema_builder.build();</pre></div></div>
</li>
<li id="section-7">
<div class="annotation">
<div class="pilwrap ">
<a class="pilcrow" href="#section-7">&#182;</a>
</div>
<h1 id="indexing-documents">Indexing documents</h1>
<p>Let’s create a brand new index.</p>
<p>This will actually just save a meta.json
with our schema in the directory.</p>
</div>
<div class="content"><div class='highlight'><pre> <span class="hljs-keyword">let</span> index = Index::create(index_path, schema.clone())?;</pre></div></div>
</li>
<li id="section-8">
<div class="annotation">
<div class="pilwrap ">
<a class="pilcrow" href="#section-8">&#182;</a>
</div>
<p>To insert document we need an index writer.
There must be only one writer at a time.
This single <code>IndexWriter</code> is already
multithreaded.</p>
<p>Here we use a buffer of 50MB per thread. Using a bigger
heap for the indexer can increase its throughput.</p>
</div>
<div class="content"><div class='highlight'><pre> <span class="hljs-keyword">let</span> <span class="hljs-keyword">mut</span> index_writer = index.writer(<span class="hljs-number">50_000_000</span>)?;</pre></div></div>
</li>
<li id="section-9">
<div class="annotation">
<div class="pilwrap ">
<a class="pilcrow" href="#section-9">&#182;</a>
</div>
<p>Let’s index our documents!
We first need a handle on the title and the body field.</p>
</div>
</li>
<li id="section-10">
<div class="annotation">
<div class="pilwrap ">
<a class="pilcrow" href="#section-10">&#182;</a>
</div>
<h3 id="create-a-document-manually-">Create a document “manually”.</h3>
<p>We can create a document manually, by setting the fields
one by one in a Document object.</p>
</div>
<div class="content"><div class='highlight'><pre> <span class="hljs-keyword">let</span> title = schema.get_field(<span class="hljs-string">"title"</span>).unwrap();
<span class="hljs-keyword">let</span> body = schema.get_field(<span class="hljs-string">"body"</span>).unwrap();
<span class="hljs-keyword">let</span> <span class="hljs-keyword">mut</span> old_man_doc = Document::<span class="hljs-keyword">default</span>();
old_man_doc.add_text(title, <span class="hljs-string">"The Old Man and the Sea"</span>);
old_man_doc.add_text(
body,
<span class="hljs-string">"He was an old man who fished alone in a skiff in the Gulf Stream and \
he had gone eighty-four days now without taking a fish."</span>,
);</pre></div></div>
</li>
<li id="section-11">
<div class="annotation">
<div class="pilwrap ">
<a class="pilcrow" href="#section-11">&#182;</a>
</div>
<p>… and add it to the <code>IndexWriter</code>.</p>
</div>
<div class="content"><div class='highlight'><pre> index_writer.add_document(old_man_doc);</pre></div></div>
</li>
<li id="section-12">
<div class="annotation">
<div class="pilwrap ">
<a class="pilcrow" href="#section-12">&#182;</a>
</div>
<h3 id="create-a-document-directly-from-json-">Create a document directly from json.</h3>
<p>Alternatively, we can use our schema to parse a
document object directly from json.
The document is a string, but we use the <code>json</code> macro
from <code>serde_json</code> for the convenience of multi-line support.</p>
</div>
<div class="content"><div class='highlight'><pre> <span class="hljs-keyword">let</span> json = json!({
<span class="hljs-string">"title"</span>: <span class="hljs-string">"Of Mice and Men"</span>,
<span class="hljs-string">"body"</span>: <span class="hljs-string">"A few miles south of Soledad, the Salinas River drops in close to the hillside \
bank and runs deep and green. The water is warm too, for it has slipped twinkling \
over the yellow sands in the sunlight before reaching the narrow pool. On one \
side of the river the golden foothill slopes curve up to the strong and rocky \
Gabilan Mountains, but on the valley side the water is lined with trees—willows \
fresh and green with every spring, carrying in their lower leaf junctures the \
debris of the winter’s flooding; and sycamores with mottled, white, recumbent \
limbs and branches that arch over the pool"</span>
});
<span class="hljs-keyword">let</span> mice_and_men_doc = schema.parse_document(&amp;json.to_string())?;
index_writer.add_document(mice_and_men_doc);</pre></div></div>
</li>
<li id="section-13">
<div class="annotation">
<div class="pilwrap ">
<a class="pilcrow" href="#section-13">&#182;</a>
</div>
<p>Multi-valued field are allowed, they are
expressed in JSON by an array.
The following document has two titles.</p>
</div>
<div class="content"><div class='highlight'><pre> <span class="hljs-keyword">let</span> json = json!({
<span class="hljs-string">"title"</span>: [<span class="hljs-string">"Frankenstein"</span>, <span class="hljs-string">"The Modern Prometheus"</span>],
<span class="hljs-string">"body"</span>: <span class="hljs-string">"You will rejoice to hear that no disaster has accompanied the commencement of an \
enterprise which you have regarded with such evil forebodings. I arrived here \
yesterday, and my first task is to assure my dear sister of my welfare and \
increasing confidence in the success of my undertaking."</span>
});
<span class="hljs-keyword">let</span> frankenstein_doc = schema.parse_document(&amp;json.to_string())?;
index_writer.add_document(frankenstein_doc);</pre></div></div>
</li>
<li id="section-14">
<div class="annotation">
<div class="pilwrap ">
<a class="pilcrow" href="#section-14">&#182;</a>
</div>
<p>This is an example, so we will only index 3 documents
here. You can check out tantivy’s tutorial to index
the English wikipedia. Tantivy’s indexing is rather fast.
Indexing 5 million articles of the English wikipedia takes
around 4 minutes on my computer!</p>
</div>
</li>
<li id="section-15">
<div class="annotation">
<div class="pilwrap ">
<a class="pilcrow" href="#section-15">&#182;</a>
</div>
<h3 id="committing">Committing</h3>
<p>At this point our documents are not searchable.</p>
<p>We need to call .commit() explicitly to force the
index_writer to finish processing the documents in the queue,
flush the current index to the disk, and advertise
the existence of new documents.</p>
<p>This call is blocking.</p>
</div>
<div class="content"><div class='highlight'><pre> index_writer.commit()?;</pre></div></div>
</li>
<li id="section-16">
<div class="annotation">
<div class="pilwrap ">
<a class="pilcrow" href="#section-16">&#182;</a>
</div>
<p>If <code>.commit()</code> returns correctly, then all of the
documents that have been added are guaranteed to be
persistently indexed.</p>
<p>In the scenario of a crash or a power failure,
tantivy behaves as if has rolled back to its last
commit.</p>
</div>
</li>
<li id="section-17">
<div class="annotation">
<div class="pilwrap ">
<a class="pilcrow" href="#section-17">&#182;</a>
</div>
<h1 id="searching">Searching</h1>
<p>Let’s search our index. Start by reloading
searchers in the index. This should be done
after every commit().</p>
</div>
<div class="content"><div class='highlight'><pre> index.load_searchers()?;</pre></div></div>
</li>
<li id="section-18">
<div class="annotation">
<div class="pilwrap ">
<a class="pilcrow" href="#section-18">&#182;</a>
</div>
<p>Afterwards create one (or more) searchers.</p>
<p>You should create a searcher
every time you start a “search query”.</p>
</div>
<div class="content"><div class='highlight'><pre> <span class="hljs-keyword">let</span> searcher = index.searcher();</pre></div></div>
</li>
<li id="section-19">
<div class="annotation">
<div class="pilwrap ">
<a class="pilcrow" href="#section-19">&#182;</a>
</div>
<p>The query parser can interpret human queries.
Here, if the user does not specify which
field they want to search, tantivy will search
in both title and body.</p>
</div>
<div class="content"><div class='highlight'><pre> <span class="hljs-keyword">let</span> <span class="hljs-keyword">mut</span> query_parser = QueryParser::for_index(index, <span class="hljs-built_in">vec!</span>[title, body]);</pre></div></div>
</li>
<li id="section-20">
<div class="annotation">
<div class="pilwrap ">
<a class="pilcrow" href="#section-20">&#182;</a>
</div>
<p>QueryParser may fail if the query is not in the right
format. For user facing applications, this can be a problem.
A ticket has been opened regarding this problem.</p>
</div>
<div class="content"><div class='highlight'><pre> <span class="hljs-keyword">let</span> query = query_parser.parse_query(<span class="hljs-string">"sea whale"</span>)?;</pre></div></div>
</li>
<li id="section-21">
<div class="annotation">
<div class="pilwrap ">
<a class="pilcrow" href="#section-21">&#182;</a>
</div>
<p>A query defines a set of documents, as
well as the way they should be scored.</p>
<p>A query created by the query parser is scored according
to a metric called Tf-Idf, and will consider
any document matching at least one of our terms.</p>
</div>
</li>
<li id="section-22">
<div class="annotation">
<div class="pilwrap ">
<a class="pilcrow" href="#section-22">&#182;</a>
</div>
<h3 id="collectors">Collectors</h3>
<p>We are not interested in all of the documents but
only in the top 10. Keeping track of our top 10 best documents
is the role of the TopCollector.</p>
</div>
<div class="content"><div class='highlight'><pre> <span class="hljs-keyword">let</span> <span class="hljs-keyword">mut</span> top_collector = TopCollector::with_limit(<span class="hljs-number">10</span>);</pre></div></div>
</li>
<li id="section-23">
<div class="annotation">
<div class="pilwrap ">
<a class="pilcrow" href="#section-23">&#182;</a>
</div>
<p>We can now perform our query.</p>
</div>
<div class="content"><div class='highlight'><pre> searcher.search(&amp;*query, &amp;<span class="hljs-keyword">mut</span> top_collector)?;</pre></div></div>
</li>
<li id="section-24">
<div class="annotation">
<div class="pilwrap ">
<a class="pilcrow" href="#section-24">&#182;</a>
</div>
<p>Our top collector now contains the 10
most relevant doc ids…</p>
</div>
<div class="content"><div class='highlight'><pre> <span class="hljs-keyword">let</span> doc_addresses = top_collector.docs();</pre></div></div>
</li>
<li id="section-25">
<div class="annotation">
<div class="pilwrap ">
<a class="pilcrow" href="#section-25">&#182;</a>
</div>
<p>The actual documents still need to be
retrieved from Tantivy’s store.</p>
<p>Since the body field was not configured as stored,
the document returned will only contain
a title.</p>
</div>
<div class="content"><div class='highlight'><pre>
<span class="hljs-keyword">for</span> doc_address <span class="hljs-keyword">in</span> doc_addresses {
<span class="hljs-keyword">let</span> retrieved_doc = searcher.doc(&amp;doc_address)?;
<span class="hljs-built_in">println!</span>(<span class="hljs-string">"{}"</span>, schema.to_json(&amp;retrieved_doc));
}</pre></div></div>
</li>
<li id="section-26">
<div class="annotation">
<div class="pilwrap ">
<a class="pilcrow" href="#section-26">&#182;</a>
</div>
<p>Wait for indexing and merging threads to shut down.
Usually this isn’t needed, but in <code>main</code> we try to
delete the temporary directory and that fails on
Windows if the files are still open.</p>
</div>
<div class="content"><div class='highlight'><pre> index_writer.wait_merging_threads()?;
<span class="hljs-literal">Ok</span>(())
}</pre></div></div>
</li>
</ul>
</div>
</body>
</html>

39
examples/integer_range_search.rs Normal file
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// # Searching a range on an indexed int field.
//
// Below is an example of creating an indexed integer field in your schema
// You can use RangeQuery to get a Count of all occurrences in a given range.
use tantivy::collector::Count;
use tantivy::query::RangeQuery;
use tantivy::schema::{Schema, INDEXED};
use tantivy::{doc, Index, Result};
fn run() -> Result<()> {
// For the sake of simplicity, this schema will only have 1 field
let mut schema_builder = Schema::builder();
// `INDEXED` is a short-hand to indicate that our field should be "searchable".
let year_field = schema_builder.add_u64_field("year", INDEXED);
let schema = schema_builder.build();
let index = Index::create_in_ram(schema);
let reader = index.reader()?;
{
let mut index_writer = index.writer_with_num_threads(1, 6_000_000)?;
for year in 1950u64..2019u64 {
index_writer.add_document(doc!(year_field => year));
}
index_writer.commit()?;
// The index will be a range of years
}
reader.reload()?;
let searcher = reader.searcher();
// The end is excluded i.e. here we are searching up to 1969
let docs_in_the_sixties = RangeQuery::new_u64(year_field, 1960..1970);
// Uses a Count collector to sum the total number of docs in the range
let num_60s_books = searcher.search(&docs_in_the_sixties, &Count)?;
assert_eq!(num_60s_books, 10);
Ok(())
}
fn main() {
run().unwrap()
}

135
examples/iterating_docs_and_positions.rs Normal file
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// # Iterating docs and positioms.
//
// At its core of tantivy, relies on a data structure
// called an inverted index.
//
// This example shows how to manually iterate through
// the list of documents containing a term, getting
// its term frequency, and accessing its positions.
// ---
// Importing tantivy...
use tantivy::schema::*;
use tantivy::{doc, DocSet, Index, Postings, TERMINATED};
fn main() -> tantivy::Result<()> {
// We first create a schema for the sake of the
// example. Check the `basic_search` example for more information.
let mut schema_builder = Schema::builder();
// For this example, we need to make sure to index positions for our title
// field. `TEXT` precisely does this.
let title = schema_builder.add_text_field("title", TEXT | STORED);
let schema = schema_builder.build();
let index = Index::create_in_ram(schema.clone());
let mut index_writer = index.writer_with_num_threads(1, 50_000_000)?;
index_writer.add_document(doc!(title => "The Old Man and the Sea"));
index_writer.add_document(doc!(title => "Of Mice and Men"));
index_writer.add_document(doc!(title => "The modern Promotheus"));
index_writer.commit()?;
let reader = index.reader()?;
let searcher = reader.searcher();
// A tantivy index is actually a collection of segments.
// Similarly, a searcher just wraps a list `segment_reader`.
//
// (Because we indexed a very small number of documents over one thread
// there is actually only one segment here, but let's iterate through the list
// anyway)
for segment_reader in searcher.segment_readers() {
// A segment contains different data structure.
// Inverted index stands for the combination of
// - the term dictionary
// - the inverted lists associated to each terms and their positions
let inverted_index = segment_reader.inverted_index(title);
// A `Term` is a text token associated with a field.
// Let's go through all docs containing the term `title:the` and access their position
let term_the = Term::from_field_text(title, "the");
// This segment posting object is like a cursor over the documents matching the term.
// The `IndexRecordOption` arguments tells tantivy we will be interested in both term frequencies
// and positions.
//
// If you don't need all this information, you may get better performance by decompressing less
// information.
if let Some(mut segment_postings) =
inverted_index.read_postings(&term_the, IndexRecordOption::WithFreqsAndPositions)
{
// this buffer will be used to request for positions
let mut positions: Vec<u32> = Vec::with_capacity(100);
let mut doc_id = segment_postings.doc();
while doc_id != TERMINATED {
// This MAY contains deleted documents as well.
if segment_reader.is_deleted(doc_id) {
doc_id = segment_postings.advance();
continue;
}
// the number of time the term appears in the document.
let term_freq: u32 = segment_postings.term_freq();
// accessing positions is slightly expensive and lazy, do not request
// for them if you don't need them for some documents.
segment_postings.positions(&mut positions);
// By definition we should have `term_freq` positions.
assert_eq!(positions.len(), term_freq as usize);
// This prints:
// ```
// Doc 0: TermFreq 2: [0, 4]
// Doc 2: TermFreq 1: [0]
// ```
println!("Doc {}: TermFreq {}: {:?}", doc_id, term_freq, positions);
doc_id = segment_postings.advance();
}
}
}
// A `Term` is a text token associated with a field.
// Let's go through all docs containing the term `title:the` and access their position
let term_the = Term::from_field_text(title, "the");
// Some other powerful operations (especially `.skip_to`) may be useful to consume these
// posting lists rapidly.
// You can check for them in the [`DocSet`](https://docs.rs/tantivy/~0/tantivy/trait.DocSet.html) trait
// and the [`Postings`](https://docs.rs/tantivy/~0/tantivy/trait.Postings.html) trait
// Also, for some VERY specific high performance use case like an OLAP analysis of logs,
// you can get better performance by accessing directly the blocks of doc ids.
for segment_reader in searcher.segment_readers() {
// A segment contains different data structure.
// Inverted index stands for the combination of
// - the term dictionary
// - the inverted lists associated to each terms and their positions
let inverted_index = segment_reader.inverted_index(title);
// This segment posting object is like a cursor over the documents matching the term.
// The `IndexRecordOption` arguments tells tantivy we will be interested in both term frequencies
// and positions.
//
// If you don't need all this information, you may get better performance by decompressing less
// information.
if let Some(mut block_segment_postings) =
inverted_index.read_block_postings(&term_the, IndexRecordOption::Basic)
{
loop {
let docs = block_segment_postings.docs();
if docs.is_empty() {
break;
}
// Once again these docs MAY contains deleted documents as well.
let docs = block_segment_postings.docs();
// Prints `Docs [0, 2].`
println!("Docs {:?}", docs);
block_segment_postings.advance();
}
}
}
Ok(())
}

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// # Indexing from different threads.
//
// It is fairly common to have to index from different threads.
// Tantivy forbids to create more than one `IndexWriter` at a time.
//
// This `IndexWriter` itself has its own multithreaded layer, so managing your own
// indexing threads will not help. However, it can still be useful for some applications.
//
// For instance, if preparing documents to send to tantivy before indexing is the bottleneck of
// your application, it is reasonable to have multiple threads.
//
// Another very common reason to want to index from multiple threads, is implementing a webserver
// with CRUD capabilities. The server framework will most likely handle request from
// different threads.
//
// The recommended way to address both of these use case is to wrap your `IndexWriter` into a
// `Arc<RwLock<IndexWriter>>`.
//
// While this is counterintuitive, adding and deleting documents do not require mutability
// over the `IndexWriter`, so several threads will be able to do this operation concurrently.
//
// The example below does not represent an actual real-life use case (who would spawn thread to
// index a single document?), but aims at demonstrating the mechanism that makes indexing
// from several threads possible.
// ---
// Importing tantivy...
use std::sync::{Arc, RwLock};
use std::thread;
use std::time::Duration;
use tantivy::schema::{Schema, STORED, TEXT};
use tantivy::{doc, Index, IndexWriter, Opstamp};
fn main() -> tantivy::Result<()> {
// # Defining the schema
let mut schema_builder = Schema::builder();
let title = schema_builder.add_text_field("title", TEXT | STORED);
let body = schema_builder.add_text_field("body", TEXT);
let schema = schema_builder.build();
let index = Index::create_in_ram(schema);
let index_writer: Arc<RwLock<IndexWriter>> = Arc::new(RwLock::new(index.writer(50_000_000)?));
// # First indexing thread.
let index_writer_clone_1 = index_writer.clone();
thread::spawn(move || {
// we index 100 times the document... for the sake of the example.
for i in 0..100 {
let opstamp = index_writer_clone_1
.read().unwrap() //< A read lock is sufficient here.
.add_document(
doc!(
title => "Of Mice and Men",
body => "A few miles south of Soledad, the Salinas River drops in close to the hillside \
bank and runs deep and green. The water is warm too, for it has slipped twinkling \
over the yellow sands in the sunlight before reaching the narrow pool. On one \
side of the river the golden foothill slopes curve up to the strong and rocky \
Gabilan Mountains, but on the valley side the water is lined with trees—willows \
fresh and green with every spring, carrying in their lower leaf junctures the \
debris of the winter’s flooding; and sycamores with mottled, white, recumbent \
limbs and branches that arch over the pool"
));
println!("add doc {} from thread 1 - opstamp {}", i, opstamp);
thread::sleep(Duration::from_millis(20));
}
});
// # Second indexing thread.
let index_writer_clone_2 = index_writer.clone();
// For convenience, tantivy also comes with a macro to
// reduce the boilerplate above.
thread::spawn(move || {
// we index 100 times the document... for the sake of the example.
for i in 0..100 {
// A read lock is sufficient here.
let opstamp = {
let index_writer_rlock = index_writer_clone_2.read().unwrap();
index_writer_rlock.add_document(doc!(
title => "Manufacturing consent",
body => "Some great book description..."
))
};
println!("add doc {} from thread 2 - opstamp {}", i, opstamp);
thread::sleep(Duration::from_millis(10));
}
});
// # In the main thread, we commit 10 times, once every 500ms.
for _ in 0..10 {
let opstamp: Opstamp = {
// Committing or rollbacking on the other hand requires write lock. This will block other threads.
let mut index_writer_wlock = index_writer.write().unwrap();
index_writer_wlock.commit().unwrap()
};
println!("committed with opstamp {}", opstamp);
thread::sleep(Duration::from_millis(500));
}
Ok(())
}

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// # Pre-tokenized text example
//
// This example shows how to use pre-tokenized text. Sometimes yout might
// want to index and search through text which is already split into
// tokens by some external tool.
//
// In this example we will:
// - use tantivy tokenizer to create tokens and load them directly into tantivy,
// - import tokenized text straight from json,
// - perform a search on documents with pre-tokenized text
use tantivy::collector::{Count, TopDocs};
use tantivy::query::TermQuery;
use tantivy::schema::*;
use tantivy::tokenizer::{PreTokenizedString, SimpleTokenizer, Token, Tokenizer};
use tantivy::{doc, Index, ReloadPolicy};
use tempfile::TempDir;
fn pre_tokenize_text(text: &str) -> Vec<Token> {
let mut token_stream = SimpleTokenizer.token_stream(text);
let mut tokens = vec![];
while token_stream.advance() {
tokens.push(token_stream.token().clone());
}
tokens
}
fn main() -> tantivy::Result<()> {
let index_path = TempDir::new()?;
let mut schema_builder = Schema::builder();
schema_builder.add_text_field("title", TEXT | STORED);
schema_builder.add_text_field("body", TEXT);
let schema = schema_builder.build();
let index = Index::create_in_dir(&index_path, schema.clone())?;
let mut index_writer = index.writer(50_000_000)?;
// We can create a document manually, by setting the fields
// one by one in a Document object.
let title = schema.get_field("title").unwrap();
let body = schema.get_field("body").unwrap();
let title_text = "The Old Man and the Sea";
let body_text = "He was an old man who fished alone in a skiff in the Gulf Stream";
// Content of our first document
// We create `PreTokenizedString` which contains original text and vector of tokens
let title_tok = PreTokenizedString {
text: String::from(title_text),
tokens: pre_tokenize_text(title_text),
};
println!(
"Original text: \"{}\" and tokens: {:?}",
title_tok.text, title_tok.tokens
);
let body_tok = PreTokenizedString {
text: String::from(body_text),
tokens: pre_tokenize_text(body_text),
};
// Now lets create a document and add our `PreTokenizedString`
let old_man_doc = doc!(title => title_tok, body => body_tok);
// ... now let's just add it to the IndexWriter
index_writer.add_document(old_man_doc);
// Pretokenized text can also be fed as JSON
let short_man_json = r#"{
"title":[{
"text":"The Old Man",
"tokens":[
{"offset_from":0,"offset_to":3,"position":0,"text":"The","position_length":1},
{"offset_from":4,"offset_to":7,"position":1,"text":"Old","position_length":1},
{"offset_from":8,"offset_to":11,"position":2,"text":"Man","position_length":1}
]
}]
}"#;
let short_man_doc = schema.parse_document(&short_man_json)?;
index_writer.add_document(short_man_doc);
// Let's commit changes
index_writer.commit()?;
// ... and now is the time to query our index
let reader = index
.reader_builder()
.reload_policy(ReloadPolicy::OnCommit)
.try_into()?;
let searcher = reader.searcher();
// We want to get documents with token "Man", we will use TermQuery to do it
// Using PreTokenizedString means the tokens are stored as is avoiding stemming
// and lowercasing, which preserves full words in their original form
let query = TermQuery::new(
Term::from_field_text(title, "Man"),
IndexRecordOption::Basic,
);
let (top_docs, count) = searcher
.search(&query, &(TopDocs::with_limit(2), Count))
.unwrap();
assert_eq!(count, 2);
// Now let's print out the results.
// Note that the tokens are not stored along with the original text
// in the document store
for (_score, doc_address) in top_docs {
let retrieved_doc = searcher.doc(doc_address)?;
println!("Document: {}", schema.to_json(&retrieved_doc));
}
// In contrary to the previous query, when we search for the "man" term we
// should get no results, as it's not one of the indexed tokens. SimpleTokenizer
// only splits text on whitespace / punctuation.
let query = TermQuery::new(
Term::from_field_text(title, "man"),
IndexRecordOption::Basic,
);
let (_top_docs, count) = searcher
.search(&query, &(TopDocs::with_limit(2), Count))
.unwrap();
assert_eq!(count, 0);
Ok(())
}

225
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extern crate tantivy;
extern crate tempdir;
#[macro_use]
extern crate serde_json;
use std::path::Path;
use tantivy::collector::TopCollector;
use tantivy::query::QueryParser;
use tantivy::schema::*;
use tantivy::Index;
use tempdir::TempDir;
fn main() {
// Let's create a temporary directory for the
// sake of this example
if let Ok(dir) = TempDir::new("tantivy_example_dir") {
run_example(dir.path()).unwrap();
dir.close().unwrap();
}
}
fn run_example(index_path: &Path) -> tantivy::Result<()> {
// # Defining the schema
//
// The Tantivy index requires a very strict schema.
// The schema declares which fields are in the index,
// and for each field, its type and "the way it should
// be indexed".
// first we need to define a schema ...
let mut schema_builder = SchemaBuilder::default();
// Our first field is title.
// We want full-text search for it, and we also want
// to be able to retrieve the document after the search.
//
// TEXT | STORED is some syntactic sugar to describe
// that.
//
// `TEXT` means the field should be tokenized and indexed,
// along with its term frequency and term positions.
//
// `STORED` means that the field will also be saved
// in a compressed, row-oriented key-value store.
// This store is useful to reconstruct the
// documents that were selected during the search phase.
schema_builder.add_text_field("title", TEXT | STORED);
// Our second field is body.
// We want full-text search for it, but we do not
// need to be able to be able to retrieve it
// for our application.
//
// We can make our index lighter and
// by omitting `STORED` flag.
schema_builder.add_text_field("body", TEXT);
let schema = schema_builder.build();
// # Indexing documents
//
// Let's create a brand new index.
//
// This will actually just save a meta.json
// with our schema in the directory.
let index = Index::create_in_dir(index_path, schema.clone())?;
// To insert document we need an index writer.
// There must be only one writer at a time.
// This single `IndexWriter` is already
// multithreaded.
//
// Here we use a buffer of 50MB per thread. Using a bigger
// heap for the indexer can increase its throughput.
let mut index_writer = index.writer(50_000_000)?;
// Let's index our documents!
// We first need a handle on the title and the body field.
// ### Create a document "manually".
//
// We can create a document manually, by setting the fields
// one by one in a Document object.
let title = schema.get_field("title").unwrap();
let body = schema.get_field("body").unwrap();
let mut old_man_doc = Document::default();
old_man_doc.add_text(title, "The Old Man and the Sea");
old_man_doc.add_text(
body,
"He was an old man who fished alone in a skiff in the Gulf Stream and \
he had gone eighty-four days now without taking a fish.",
);
// ... and add it to the `IndexWriter`.
index_writer.add_document(old_man_doc);
// ### Create a document directly from json.
//
// Alternatively, we can use our schema to parse a
// document object directly from json.
// The document is a string, but we use the `json` macro
// from `serde_json` for the convenience of multi-line support.
let json = json!({
"title": "Of Mice and Men",
"body": "A few miles south of Soledad, the Salinas River drops in close to the hillside \
bank and runs deep and green. The water is warm too, for it has slipped twinkling \
over the yellow sands in the sunlight before reaching the narrow pool. On one \
side of the river the golden foothill slopes curve up to the strong and rocky \
Gabilan Mountains, but on the valley side the water is lined with trees—willows \
fresh and green with every spring, carrying in their lower leaf junctures the \
debris of the winter’s flooding; and sycamores with mottled, white, recumbent \
limbs and branches that arch over the pool"
});
let mice_and_men_doc = schema.parse_document(&json.to_string())?;
index_writer.add_document(mice_and_men_doc);
// Multi-valued field are allowed, they are
// expressed in JSON by an array.
// The following document has two titles.
let json = json!({
"title": ["Frankenstein", "The Modern Prometheus"],
"body": "You will rejoice to hear that no disaster has accompanied the commencement of an \
enterprise which you have regarded with such evil forebodings. I arrived here \
yesterday, and my first task is to assure my dear sister of my welfare and \
increasing confidence in the success of my undertaking."
});
let frankenstein_doc = schema.parse_document(&json.to_string())?;
index_writer.add_document(frankenstein_doc);
// This is an example, so we will only index 3 documents
// here. You can check out tantivy's tutorial to index
// the English wikipedia. Tantivy's indexing is rather fast.
// Indexing 5 million articles of the English wikipedia takes
// around 4 minutes on my computer!
// ### Committing
//
// At this point our documents are not searchable.
//
//
// We need to call .commit() explicitly to force the
// index_writer to finish processing the documents in the queue,
// flush the current index to the disk, and advertise
// the existence of new documents.
//
// This call is blocking.
index_writer.commit()?;
// If `.commit()` returns correctly, then all of the
// documents that have been added are guaranteed to be
// persistently indexed.
//
// In the scenario of a crash or a power failure,
// tantivy behaves as if has rolled back to its last
// commit.
// # Searching
//
// Let's search our index. Start by reloading
// searchers in the index. This should be done
// after every commit().
index.load_searchers()?;
// Afterwards create one (or more) searchers.
//
// You should create a searcher
// every time you start a "search query".
let searcher = index.searcher();
// The query parser can interpret human queries.
// Here, if the user does not specify which
// field they want to search, tantivy will search
// in both title and body.
let query_parser = QueryParser::for_index(&index, vec![title, body]);
// QueryParser may fail if the query is not in the right
// format. For user facing applications, this can be a problem.
// A ticket has been opened regarding this problem.
let query = query_parser.parse_query("sea whale")?;
// A query defines a set of documents, as
// well as the way they should be scored.
//
// A query created by the query parser is scored according
// to a metric called Tf-Idf, and will consider
// any document matching at least one of our terms.
// ### Collectors
//
// We are not interested in all of the documents but
// only in the top 10. Keeping track of our top 10 best documents
// is the role of the TopCollector.
let mut top_collector = TopCollector::with_limit(10);
// We can now perform our query.
searcher.search(&*query, &mut top_collector)?;
// Our top collector now contains the 10
// most relevant doc ids...
let doc_addresses = top_collector.docs();
// The actual documents still need to be
// retrieved from Tantivy's store.
//
// Since the body field was not configured as stored,
// the document returned will only contain
// a title.
for doc_address in doc_addresses {
let retrieved_doc = searcher.doc(&doc_address)?;
println!("{}", schema.to_json(&retrieved_doc));
}
// Wait for indexing and merging threads to shut down.
// Usually this isn't needed, but in `main` we try to
// delete the temporary directory and that fails on
// Windows if the files are still open.
index_writer.wait_merging_threads()?;
Ok(())
}

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// # Snippet example
//
// This example shows how to return a representative snippet of
// your hit result.
// Snippet are an extracted of a target document, and returned in HTML format.
// The keyword searched by the user are highlighted with a `<b>` tag.
// ---
// Importing tantivy...
use tantivy::collector::TopDocs;
use tantivy::query::QueryParser;
use tantivy::schema::*;
use tantivy::{doc, Index, Snippet, SnippetGenerator};
use tempfile::TempDir;
fn main() -> tantivy::Result<()> {
// Let's create a temporary directory for the
// sake of this example
let index_path = TempDir::new()?;
// # Defining the schema
let mut schema_builder = Schema::builder();
let title = schema_builder.add_text_field("title", TEXT | STORED);
let body = schema_builder.add_text_field("body", TEXT | STORED);
let schema = schema_builder.build();
// # Indexing documents
let index = Index::create_in_dir(&index_path, schema.clone())?;
let mut index_writer = index.writer(50_000_000)?;
// we'll only need one doc for this example.
index_writer.add_document(doc!(
title => "Of Mice and Men",
body => "A few miles south of Soledad, the Salinas River drops in close to the hillside \
bank and runs deep and green. The water is warm too, for it has slipped twinkling \
over the yellow sands in the sunlight before reaching the narrow pool. On one \
side of the river the golden foothill slopes curve up to the strong and rocky \
Gabilan Mountains, but on the valley side the water is lined with trees—willows \
fresh and green with every spring, carrying in their lower leaf junctures the \
debris of the winter’s flooding; and sycamores with mottled, white, recumbent \
limbs and branches that arch over the pool"
));
// ...
index_writer.commit()?;
let reader = index.reader()?;
let searcher = reader.searcher();
let query_parser = QueryParser::for_index(&index, vec![title, body]);
let query = query_parser.parse_query("sycamore spring")?;
let top_docs = searcher.search(&query, &TopDocs::with_limit(10))?;
let snippet_generator = SnippetGenerator::create(&searcher, &*query, body)?;
for (score, doc_address) in top_docs {
let doc = searcher.doc(doc_address)?;
let snippet = snippet_generator.snippet_from_doc(&doc);
println!("Document score {}:", score);
println!("title: {}", doc.get_first(title).unwrap().text().unwrap());
println!("snippet: {}", snippet.to_html());
println!("custom highlighting: {}", highlight(snippet));
}
Ok(())
}
fn highlight(snippet: Snippet) -> String {
let mut result = String::new();
let mut start_from = 0;
for (start, end) in snippet.highlighted().iter().map(|h| h.bounds()) {
result.push_str(&snippet.fragments()[start_from..start]);
result.push_str(" --> ");
result.push_str(&snippet.fragments()[start..end]);
result.push_str(" <-- ");
start_from = end;
}
result.push_str(&snippet.fragments()[start_from..]);
result
}

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// # Stop Words Example
//
// This example covers the basic usage of stop words
// with tantivy
//
// We will :
// - define our schema
// - create an index in a directory
// - add a few stop words
// - index few documents in our index
// ---
// Importing tantivy...
use tantivy::collector::TopDocs;
use tantivy::query::QueryParser;
use tantivy::schema::*;
use tantivy::tokenizer::*;
use tantivy::{doc, Index};
fn main() -> tantivy::Result<()> {
// this example assumes you understand the content in `basic_search`
let mut schema_builder = Schema::builder();
// This configures your custom options for how tantivy will
// store and process your content in the index; The key
// to note is that we are setting the tokenizer to `stoppy`
// which will be defined and registered below.
let text_field_indexing = TextFieldIndexing::default()
.set_tokenizer("stoppy")
.set_index_option(IndexRecordOption::WithFreqsAndPositions);
let text_options = TextOptions::default()
.set_indexing_options(text_field_indexing)
.set_stored();
// Our first field is title.
schema_builder.add_text_field("title", text_options);
// Our second field is body.
let text_field_indexing = TextFieldIndexing::default()
.set_tokenizer("stoppy")
.set_index_option(IndexRecordOption::WithFreqsAndPositions);
let text_options = TextOptions::default()
.set_indexing_options(text_field_indexing)
.set_stored();
schema_builder.add_text_field("body", text_options);
let schema = schema_builder.build();
let index = Index::create_in_ram(schema.clone());
// This tokenizer lowers all of the text (to help with stop word matching)
// then removes all instances of `the` and `and` from the corpus
let tokenizer = TextAnalyzer::from(SimpleTokenizer)
.filter(LowerCaser)
.filter(StopWordFilter::remove(vec![
"the".to_string(),
"and".to_string(),
]));
index.tokenizers().register("stoppy", tokenizer);
let mut index_writer = index.writer(50_000_000)?;
let title = schema.get_field("title").unwrap();
let body = schema.get_field("body").unwrap();
index_writer.add_document(doc!(
title => "The Old Man and the Sea",
body => "He was an old man who fished alone in a skiff in the Gulf Stream and \
he had gone eighty-four days now without taking a fish."
));
index_writer.add_document(doc!(
title => "Of Mice and Men",
body => "A few miles south of Soledad, the Salinas River drops in close to the hillside \
bank and runs deep and green. The water is warm too, for it has slipped twinkling \
over the yellow sands in the sunlight before reaching the narrow pool. On one \
side of the river the golden foothill slopes curve up to the strong and rocky \
Gabilan Mountains, but on the valley side the water is lined with trees—willows \
fresh and green with every spring, carrying in their lower leaf junctures the \
debris of the winter’s flooding; and sycamores with mottled, white, recumbent \
limbs and branches that arch over the pool"
));
index_writer.add_document(doc!(
title => "Frankenstein",
body => "You will rejoice to hear that no disaster has accompanied the commencement of an \
enterprise which you have regarded with such evil forebodings. I arrived here \
yesterday, and my first task is to assure my dear sister of my welfare and \
increasing confidence in the success of my undertaking."
));
index_writer.commit()?;
let reader = index.reader()?;
let searcher = reader.searcher();
let query_parser = QueryParser::for_index(&index, vec![title, body]);
// stop words are applied on the query as well.
// The following will be equivalent to `title:frankenstein`
let query = query_parser.parse_query("title:\"the Frankenstein\"")?;
let top_docs = searcher.search(&query, &TopDocs::with_limit(10))?;
for (score, doc_address) in top_docs {
let retrieved_doc = searcher.doc(doc_address)?;
println!("\n==\nDocument score {}:", score);
println!("{}", schema.to_json(&retrieved_doc));
}
Ok(())
}

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use tantivy;
use tantivy::schema::*;
// # Document from json
//
// For convenience, `Document` can be parsed directly from json.
fn main() -> tantivy::Result<()> {
// Let's first define a schema and an index.
// Check out the basic example if this is confusing to you.
//
// first we need to define a schema ...
let mut schema_builder = Schema::builder();
schema_builder.add_text_field("title", TEXT | STORED);
schema_builder.add_text_field("body", TEXT);
schema_builder.add_u64_field("year", INDEXED);
let schema = schema_builder.build();
// Let's assume we have a json-serialized document.
let mice_and_men_doc_json = r#"{
"title": "Of Mice and Men",
"year": 1937
}"#;
// We can parse our document
let _mice_and_men_doc = schema.parse_document(&mice_and_men_doc_json)?;
// Multi-valued field are allowed, they are
// expressed in JSON by an array.
// The following document has two titles.
let frankenstein_json = r#"{
"title": ["Frankenstein", "The Modern Prometheus"],
"year": 1818
}"#;
let _frankenstein_doc = schema.parse_document(&frankenstein_json)?;
// Note that the schema is saved in your index directory.
//
// As a result, Indexes are aware of their schema, and you can use this feature
// just by opening an existing `Index`, and calling `index.schema()..parse_document(json)`.
Ok(())
}

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query-grammar/Cargo.toml Normal file
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[package]
name = "tantivy-query-grammar"
version = "0.13.0"
authors = ["Paul Masurel <paul.masurel@gmail.com>"]
license = "MIT"
categories = ["database-implementations", "data-structures"]
description = """Search engine library"""
documentation = "https://tantivy-search.github.io/tantivy/tantivy/index.html"
homepage = "https://github.com/tantivy-search/tantivy"
repository = "https://github.com/tantivy-search/tantivy"
readme = "README.md"
keywords = ["search", "information", "retrieval"]
edition = "2018"
[dependencies]
combine = {version="4", default-features=false, features=[] }

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# Tantivy Query Grammar
This crate is used by tantivy to parse queries.

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mod occur;
mod query_grammar;
mod user_input_ast;
use combine::parser::Parser;
pub use crate::occur::Occur;
use crate::query_grammar::parse_to_ast;
pub use crate::user_input_ast::{UserInputAST, UserInputBound, UserInputLeaf, UserInputLiteral};
pub struct Error;
pub fn parse_query(query: &str) -> Result<UserInputAST, Error> {
let (user_input_ast, _remaining) = parse_to_ast().parse(query).map_err(|_| Error)?;
Ok(user_input_ast)
}

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query-grammar/src/occur.rs Normal file
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use std::fmt;
use std::fmt::Write;
/// Defines whether a term in a query must be present,
/// should be present or must be not present.
#[derive(Debug, Clone, Hash, Copy, Eq, PartialEq)]
pub enum Occur {
/// For a given document to be considered for scoring,
/// at least one of the document with the Should or the Must
/// Occur constraint must be within the document.
Should,
/// Document without the term are excluded from the search.
Must,
/// Document that contain the term are excluded from the
/// search.
MustNot,
}
impl Occur {
/// Returns the one-char prefix symbol for this `Occur`.
/// - `Should` => '?',
/// - `Must` => '+'
/// - `Not` => '-'
fn to_char(self) -> char {
match self {
Occur::Should => '?',
Occur::Must => '+',
Occur::MustNot => '-',
}
}
/// Compose two occur values.
pub fn compose(left: Occur, right: Occur) -> Occur {
match (left, right) {
(Occur::Should, _) => right,
(Occur::Must, Occur::MustNot) => Occur::MustNot,
(Occur::Must, _) => Occur::Must,
(Occur::MustNot, Occur::MustNot) => Occur::Must,
(Occur::MustNot, _) => Occur::MustNot,
}
}
}
impl fmt::Display for Occur {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.write_char(self.to_char())
}
}
#[cfg(test)]
mod test {
use crate::Occur;
#[test]
fn test_Occur_compose() {
assert_eq!(Occur::compose(Occur::Should, Occur::Should), Occur::Should);
assert_eq!(Occur::compose(Occur::Should, Occur::Must), Occur::Must);
assert_eq!(
Occur::compose(Occur::Should, Occur::MustNot),
Occur::MustNot
);
assert_eq!(Occur::compose(Occur::Must, Occur::Should), Occur::Must);
assert_eq!(Occur::compose(Occur::Must, Occur::Must), Occur::Must);
assert_eq!(Occur::compose(Occur::Must, Occur::MustNot), Occur::MustNot);
assert_eq!(
Occur::compose(Occur::MustNot, Occur::Should),
Occur::MustNot
);
assert_eq!(Occur::compose(Occur::MustNot, Occur::Must), Occur::MustNot);
assert_eq!(Occur::compose(Occur::MustNot, Occur::MustNot), Occur::Must);
}
}

510
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use super::user_input_ast::{UserInputAST, UserInputBound, UserInputLeaf, UserInputLiteral};
use crate::Occur;
use combine::error::StringStreamError;
use combine::parser::char::{char, digit, letter, space, spaces, string};
use combine::parser::Parser;
use combine::{
attempt, choice, eof, many, many1, one_of, optional, parser, satisfy, skip_many1, value,
};
fn field<'a>() -> impl Parser<&'a str, Output = String> {
(
letter(),
many(satisfy(|c: char| c.is_alphanumeric() || c == '_')),
)
.skip(char(':'))
.map(|(s1, s2): (char, String)| format!("{}{}", s1, s2))
}
fn word<'a>() -> impl Parser<&'a str, Output = String> {
(
satisfy(|c: char| {
!c.is_whitespace()
&& !['-', '^', '`', ':', '{', '}', '"', '[', ']', '(', ')'].contains(&c)
}),
many(satisfy(|c: char| {
!c.is_whitespace() && ![':', '^', '{', '}', '"', '[', ']', '(', ')'].contains(&c)
})),
)
.map(|(s1, s2): (char, String)| format!("{}{}", s1, s2))
.and_then(|s: String| match s.as_str() {
"OR" | "AND " | "NOT" => Err(StringStreamError::UnexpectedParse),
_ => Ok(s),
})
}
fn term_val<'a>() -> impl Parser<&'a str, Output = String> {
let phrase = char('"').with(many1(satisfy(|c| c != '"'))).skip(char('"'));
phrase.or(word())
}
fn term_query<'a>() -> impl Parser<&'a str, Output = UserInputLiteral> {
let term_val_with_field = negative_number().or(term_val());
(field(), term_val_with_field).map(|(field_name, phrase)| UserInputLiteral {
field_name: Some(field_name),
phrase,
})
}
fn literal<'a>() -> impl Parser<&'a str, Output = UserInputLeaf> {
let term_default_field = term_val().map(|phrase| UserInputLiteral {
field_name: None,
phrase,
});
attempt(term_query())
.or(term_default_field)
.map(UserInputLeaf::from)
}
fn negative_number<'a>() -> impl Parser<&'a str, Output = String> {
(
char('-'),
many1(digit()),
optional((char('.'), many1(digit()))),
)
.map(|(s1, s2, s3): (char, String, Option<(char, String)>)| {
if let Some(('.', s3)) = s3 {
format!("{}{}.{}", s1, s2, s3)
} else {
format!("{}{}", s1, s2)
}
})
}
fn spaces1<'a>() -> impl Parser<&'a str, Output = ()> {
skip_many1(space())
}
/// Function that parses a range out of a Stream
/// Supports ranges like:
/// [5 TO 10], {5 TO 10}, [* TO 10], [10 TO *], {10 TO *], >5, <=10
/// [a TO *], [a TO c], [abc TO bcd}
fn range<'a>() -> impl Parser<&'a str, Output = UserInputLeaf> {
let range_term_val = || {
word()
.or(negative_number())
.or(char('*').with(value("*".to_string())))
};
// check for unbounded range in the form of <5, <=10, >5, >=5
let elastic_unbounded_range = (
choice([
attempt(string(">=")),
attempt(string("<=")),
attempt(string("<")),
attempt(string(">")),
])
.skip(spaces()),
range_term_val(),
)
.map(
|(comparison_sign, bound): (&str, String)| match comparison_sign {
">=" => (UserInputBound::Inclusive(bound), UserInputBound::Unbounded),
"<=" => (UserInputBound::Unbounded, UserInputBound::Inclusive(bound)),
"<" => (UserInputBound::Unbounded, UserInputBound::Exclusive(bound)),
">" => (UserInputBound::Exclusive(bound), UserInputBound::Unbounded),
// default case
_ => (UserInputBound::Unbounded, UserInputBound::Unbounded),
},
);
let lower_bound = (one_of("{[".chars()), range_term_val()).map(
|(boundary_char, lower_bound): (char, String)| {
if lower_bound == "*" {
UserInputBound::Unbounded
} else if boundary_char == '{' {
UserInputBound::Exclusive(lower_bound)
} else {
UserInputBound::Inclusive(lower_bound)
}
},
);
let upper_bound = (range_term_val(), one_of("}]".chars())).map(
|(higher_bound, boundary_char): (String, char)| {
if higher_bound == "*" {
UserInputBound::Unbounded
} else if boundary_char == '}' {
UserInputBound::Exclusive(higher_bound)
} else {
UserInputBound::Inclusive(higher_bound)
}
},
);
// return only lower and upper
let lower_to_upper = (
lower_bound.skip((spaces(), string("TO"), spaces())),
upper_bound,
);
(
optional(field()).skip(spaces()),
// try elastic first, if it matches, the range is unbounded
attempt(elastic_unbounded_range).or(lower_to_upper),
)
.map(|(field, (lower, upper))|
// Construct the leaf from extracted field (optional)
// and bounds
UserInputLeaf::Range {
field,
lower,
upper
})
}
fn negate(expr: UserInputAST) -> UserInputAST {
expr.unary(Occur::MustNot)
}
fn leaf<'a>() -> impl Parser<&'a str, Output = UserInputAST> {
parser(|input| {
char('(')
.with(ast())
.skip(char(')'))
.or(char('*').map(|_| UserInputAST::from(UserInputLeaf::All)))
.or(attempt(
string("NOT").skip(spaces1()).with(leaf()).map(negate),
))
.or(attempt(range().map(UserInputAST::from)))
.or(literal().map(UserInputAST::from))
.parse_stream(input)
.into_result()
})
}
fn occur_symbol<'a>() -> impl Parser<&'a str, Output = Occur> {
char('-')
.map(|_| Occur::MustNot)
.or(char('+').map(|_| Occur::Must))
}
fn occur_leaf<'a>() -> impl Parser<&'a str, Output = (Option<Occur>, UserInputAST)> {
(optional(occur_symbol()), boosted_leaf())
}
fn positive_float_number<'a>() -> impl Parser<&'a str, Output = f64> {
(many1(digit()), optional((char('.'), many1(digit())))).map(
|(int_part, decimal_part_opt): (String, Option<(char, String)>)| {
let mut float_str = int_part;
if let Some((chr, decimal_str)) = decimal_part_opt {
float_str.push(chr);
float_str.push_str(&decimal_str);
}
float_str.parse::<f64>().unwrap()
},
)
}
fn boost<'a>() -> impl Parser<&'a str, Output = f64> {
(char('^'), positive_float_number()).map(|(_, boost)| boost)
}
fn boosted_leaf<'a>() -> impl Parser<&'a str, Output = UserInputAST> {
(leaf(), optional(boost())).map(|(leaf, boost_opt)| match boost_opt {
Some(boost) if (boost - 1.0).abs() > std::f64::EPSILON => {
UserInputAST::Boost(Box::new(leaf), boost)
}
_ => leaf,
})
}
#[derive(Clone, Copy)]
enum BinaryOperand {
Or,
And,
}
fn binary_operand<'a>() -> impl Parser<&'a str, Output = BinaryOperand> {
string("AND")
.with(value(BinaryOperand::And))
.or(string("OR").with(value(BinaryOperand::Or)))
}
fn aggregate_binary_expressions(
left: UserInputAST,
others: Vec<(BinaryOperand, UserInputAST)>,
) -> UserInputAST {
let mut dnf: Vec<Vec<UserInputAST>> = vec![vec![left]];
for (operator, operand_ast) in others {
match operator {
BinaryOperand::And => {
if let Some(last) = dnf.last_mut() {
last.push(operand_ast);
}
}
BinaryOperand::Or => {
dnf.push(vec![operand_ast]);
}
}
}
if dnf.len() == 1 {
UserInputAST::and(dnf.into_iter().next().unwrap()) //< safe
} else {
let conjunctions = dnf.into_iter().map(UserInputAST::and).collect();
UserInputAST::or(conjunctions)
}
}
fn operand_leaf<'a>() -> impl Parser<&'a str, Output = (BinaryOperand, UserInputAST)> {
(
binary_operand().skip(spaces()),
boosted_leaf().skip(spaces()),
)
}
pub fn ast<'a>() -> impl Parser<&'a str, Output = UserInputAST> {
let boolean_expr = (boosted_leaf().skip(spaces()), many1(operand_leaf()))
.map(|(left, right)| aggregate_binary_expressions(left, right));
let whitespace_separated_leaves = many1(occur_leaf().skip(spaces().silent())).map(
|subqueries: Vec<(Option<Occur>, UserInputAST)>| {
if subqueries.len() == 1 {
let (occur_opt, ast) = subqueries.into_iter().next().unwrap();
match occur_opt.unwrap_or(Occur::Should) {
Occur::Must | Occur::Should => ast,
Occur::MustNot => UserInputAST::Clause(vec![(Some(Occur::MustNot), ast)]),
}
} else {
UserInputAST::Clause(subqueries.into_iter().collect())
}
},
);
let expr = attempt(boolean_expr).or(whitespace_separated_leaves);
spaces().with(expr).skip(spaces())
}
pub fn parse_to_ast<'a>() -> impl Parser<&'a str, Output = UserInputAST> {
spaces()
.with(optional(ast()).skip(eof()))
.map(|opt_ast| opt_ast.unwrap_or_else(UserInputAST::empty_query))
}
#[cfg(test)]
mod test {
use super::*;
use combine::parser::Parser;
pub fn nearly_equals(a: f64, b: f64) -> bool {
(a - b).abs() < 0.0005 * (a + b).abs()
}
fn assert_nearly_equals(expected: f64, val: f64) {
assert!(
nearly_equals(val, expected),
"Got {}, expected {}.",
val,
expected
);
}
#[test]
fn test_occur_symbol() {
assert_eq!(super::occur_symbol().parse("-"), Ok((Occur::MustNot, "")));
assert_eq!(super::occur_symbol().parse("+"), Ok((Occur::Must, "")));
}
#[test]
fn test_positive_float_number() {
fn valid_parse(float_str: &str, expected_val: f64, expected_remaining: &str) {
let (val, remaining) = positive_float_number().parse(float_str).unwrap();
assert_eq!(remaining, expected_remaining);
assert_nearly_equals(val, expected_val);
}
fn error_parse(float_str: &str) {
assert!(positive_float_number().parse(float_str).is_err());
}
valid_parse("1.0", 1.0, "");
valid_parse("1", 1.0, "");
valid_parse("0.234234 aaa", 0.234234f64, " aaa");
error_parse(".3332");
error_parse("1.");
error_parse("-1.");
}
fn test_parse_query_to_ast_helper(query: &str, expected: &str) {
let query = parse_to_ast().parse(query).unwrap().0;
let query_str = format!("{:?}", query);
assert_eq!(query_str, expected);
}
fn test_is_parse_err(query: &str) {
assert!(parse_to_ast().parse(query).is_err());
}
#[test]
fn test_parse_empty_to_ast() {
test_parse_query_to_ast_helper("", "<emptyclause>");
}
#[test]
fn test_parse_query_to_ast_hyphen() {
test_parse_query_to_ast_helper("\"www-form-encoded\"", "\"www-form-encoded\"");
test_parse_query_to_ast_helper("www-form-encoded", "\"www-form-encoded\"");
test_parse_query_to_ast_helper("www-form-encoded", "\"www-form-encoded\"");
}
#[test]
fn test_parse_query_to_ast_not_op() {
assert_eq!(
format!("{:?}", parse_to_ast().parse("NOT")),
"Err(UnexpectedParse)"
);
test_parse_query_to_ast_helper("NOTa", "\"NOTa\"");
test_parse_query_to_ast_helper("NOT a", "(-\"a\")");
}
#[test]
fn test_boosting() {
assert!(parse_to_ast().parse("a^2^3").is_err());
assert!(parse_to_ast().parse("a^2^").is_err());
test_parse_query_to_ast_helper("a^3", "(\"a\")^3");
test_parse_query_to_ast_helper("a^3 b^2", "(*(\"a\")^3 *(\"b\")^2)");
test_parse_query_to_ast_helper("a^1", "\"a\"");
}
#[test]
fn test_parse_query_to_ast_binary_op() {
test_parse_query_to_ast_helper("a AND b", "(+\"a\" +\"b\")");
test_parse_query_to_ast_helper("a OR b", "(?\"a\" ?\"b\")");
test_parse_query_to_ast_helper("a OR b AND c", "(?\"a\" ?(+\"b\" +\"c\"))");
test_parse_query_to_ast_helper("a AND b AND c", "(+\"a\" +\"b\" +\"c\")");
assert_eq!(
format!("{:?}", parse_to_ast().parse("a OR b aaa")),
"Err(UnexpectedParse)"
);
assert_eq!(
format!("{:?}", parse_to_ast().parse("a AND b aaa")),
"Err(UnexpectedParse)"
);
assert_eq!(
format!("{:?}", parse_to_ast().parse("aaa a OR b ")),
"Err(UnexpectedParse)"
);
assert_eq!(
format!("{:?}", parse_to_ast().parse("aaa ccc a OR b ")),
"Err(UnexpectedParse)"
);
}
#[test]
fn test_parse_elastic_query_ranges() {
test_parse_query_to_ast_helper("title: >a", "title:{\"a\" TO \"*\"}");
test_parse_query_to_ast_helper("title:>=a", "title:[\"a\" TO \"*\"}");
test_parse_query_to_ast_helper("title: <a", "title:{\"*\" TO \"a\"}");
test_parse_query_to_ast_helper("title:<=a", "title:{\"*\" TO \"a\"]");
test_parse_query_to_ast_helper("title:<=bsd", "title:{\"*\" TO \"bsd\"]");
test_parse_query_to_ast_helper("weight: >70", "weight:{\"70\" TO \"*\"}");
test_parse_query_to_ast_helper("weight:>=70", "weight:[\"70\" TO \"*\"}");
test_parse_query_to_ast_helper("weight: <70", "weight:{\"*\" TO \"70\"}");
test_parse_query_to_ast_helper("weight:<=70", "weight:{\"*\" TO \"70\"]");
test_parse_query_to_ast_helper("weight: >60.7", "weight:{\"60.7\" TO \"*\"}");
test_parse_query_to_ast_helper("weight: <= 70", "weight:{\"*\" TO \"70\"]");
test_parse_query_to_ast_helper("weight: <= 70.5", "weight:{\"*\" TO \"70.5\"]");
}
#[test]
fn test_occur_leaf() {
let ((occur, ast), _) = super::occur_leaf().parse("+abc").unwrap();
assert_eq!(occur, Some(Occur::Must));
assert_eq!(format!("{:?}", ast), "\"abc\"");
}
#[test]
fn test_range_parser() {
// testing the range() parser separately
let res = range().parse("title: <hello").unwrap().0;
let expected = UserInputLeaf::Range {
field: Some("title".to_string()),
lower: UserInputBound::Unbounded,
upper: UserInputBound::Exclusive("hello".to_string()),
};
let res2 = range().parse("title:{* TO hello}").unwrap().0;
assert_eq!(res, expected);
assert_eq!(res2, expected);
let expected_weight = UserInputLeaf::Range {
field: Some("weight".to_string()),
lower: UserInputBound::Inclusive("71.2".to_string()),
upper: UserInputBound::Unbounded,
};
let res3 = range().parse("weight: >=71.2").unwrap().0;
let res4 = range().parse("weight:[71.2 TO *}").unwrap().0;
assert_eq!(res3, expected_weight);
assert_eq!(res4, expected_weight);
}
#[test]
fn test_parse_query_to_triming_spaces() {
test_parse_query_to_ast_helper(" abc", "\"abc\"");
test_parse_query_to_ast_helper("abc ", "\"abc\"");
test_parse_query_to_ast_helper("( a OR abc)", "(?\"a\" ?\"abc\")");
test_parse_query_to_ast_helper("(a OR abc)", "(?\"a\" ?\"abc\")");
test_parse_query_to_ast_helper("(a OR abc)", "(?\"a\" ?\"abc\")");
test_parse_query_to_ast_helper("a OR abc ", "(?\"a\" ?\"abc\")");
test_parse_query_to_ast_helper("(a OR abc )", "(?\"a\" ?\"abc\")");
test_parse_query_to_ast_helper("(a OR abc) ", "(?\"a\" ?\"abc\")");
}
#[test]
fn test_parse_query_single_term() {
test_parse_query_to_ast_helper("abc", "\"abc\"");
}
#[test]
fn test_parse_query_default_clause() {
test_parse_query_to_ast_helper("a b", "(*\"a\" *\"b\")");
}
#[test]
fn test_parse_query_must_default_clause() {
test_parse_query_to_ast_helper("+(a b)", "(*\"a\" *\"b\")");
}
#[test]
fn test_parse_query_must_single_term() {
test_parse_query_to_ast_helper("+d", "\"d\"");
}
#[test]
fn test_single_term_with_field() {
test_parse_query_to_ast_helper("abc:toto", "abc:\"toto\"");
}
#[test]
fn test_single_term_with_float() {
test_parse_query_to_ast_helper("abc:1.1", "abc:\"1.1\"");
}
#[test]
fn test_must_clause() {
test_parse_query_to_ast_helper("(+a +b)", "(+\"a\" +\"b\")");
}
#[test]
fn test_parse_test_query_plus_a_b_plus_d() {
test_parse_query_to_ast_helper("+(a b) +d", "(+(*\"a\" *\"b\") +\"d\")");
}
#[test]
fn test_parse_test_query_other() {
test_parse_query_to_ast_helper("(+a +b) d", "(*(+\"a\" +\"b\") *\"d\")");
test_parse_query_to_ast_helper("+abc:toto", "abc:\"toto\"");
test_parse_query_to_ast_helper("(+abc:toto -titi)", "(+abc:\"toto\" -\"titi\")");
test_parse_query_to_ast_helper("-abc:toto", "(-abc:\"toto\")");
test_parse_query_to_ast_helper("abc:a b", "(*abc:\"a\" *\"b\")");
test_parse_query_to_ast_helper("abc:\"a b\"", "abc:\"a b\"");
test_parse_query_to_ast_helper("foo:[1 TO 5]", "foo:[\"1\" TO \"5\"]");
}
#[test]
fn test_parse_query_with_range() {
test_parse_query_to_ast_helper("[1 TO 5]", "[\"1\" TO \"5\"]");
test_parse_query_to_ast_helper("foo:{a TO z}", "foo:{\"a\" TO \"z\"}");
test_parse_query_to_ast_helper("foo:[1 TO toto}", "foo:[\"1\" TO \"toto\"}");
test_parse_query_to_ast_helper("foo:[* TO toto}", "foo:{\"*\" TO \"toto\"}");
test_parse_query_to_ast_helper("foo:[1 TO *}", "foo:[\"1\" TO \"*\"}");
test_parse_query_to_ast_helper("foo:[1.1 TO *}", "foo:[\"1.1\" TO \"*\"}");
test_is_parse_err("abc + ");
}
}

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use std::fmt;
use std::fmt::{Debug, Formatter};
use crate::Occur;
#[derive(PartialEq)]
pub enum UserInputLeaf {
Literal(UserInputLiteral),
All,
Range {
field: Option<String>,
lower: UserInputBound,
upper: UserInputBound,
},
}
impl Debug for UserInputLeaf {
fn fmt(&self, formatter: &mut Formatter<'_>) -> Result<(), fmt::Error> {
match self {
UserInputLeaf::Literal(literal) => literal.fmt(formatter),
UserInputLeaf::Range {
ref field,
ref lower,
ref upper,
} => {
if let Some(ref field) = field {
write!(formatter, "{}:", field)?;
}
lower.display_lower(formatter)?;
write!(formatter, " TO ")?;
upper.display_upper(formatter)?;
Ok(())
}
UserInputLeaf::All => write!(formatter, "*"),
}
}
}
#[derive(PartialEq)]
pub struct UserInputLiteral {
pub field_name: Option<String>,
pub phrase: String,
}
impl fmt::Debug for UserInputLiteral {
fn fmt(&self, formatter: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
match self.field_name {
Some(ref field_name) => write!(formatter, "{}:\"{}\"", field_name, self.phrase),
None => write!(formatter, "\"{}\"", self.phrase),
}
}
}
#[derive(PartialEq)]
pub enum UserInputBound {
Inclusive(String),
Exclusive(String),
Unbounded,
}
impl UserInputBound {
fn display_lower(&self, formatter: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
match *self {
UserInputBound::Inclusive(ref word) => write!(formatter, "[\"{}\"", word),
UserInputBound::Exclusive(ref word) => write!(formatter, "{{\"{}\"", word),
UserInputBound::Unbounded => write!(formatter, "{{\"*\""),
}
}
fn display_upper(&self, formatter: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
match *self {
UserInputBound::Inclusive(ref word) => write!(formatter, "\"{}\"]", word),
UserInputBound::Exclusive(ref word) => write!(formatter, "\"{}\"}}", word),
UserInputBound::Unbounded => write!(formatter, "\"*\"}}"),
}
}
pub fn term_str(&self) -> &str {
match *self {
UserInputBound::Inclusive(ref contents) => contents,
UserInputBound::Exclusive(ref contents) => contents,
UserInputBound::Unbounded => &"*",
}
}
}
pub enum UserInputAST {
Clause(Vec<(Option<Occur>, UserInputAST)>),
Leaf(Box<UserInputLeaf>),
Boost(Box<UserInputAST>, f64),
}
impl UserInputAST {
pub fn unary(self, occur: Occur) -> UserInputAST {
UserInputAST::Clause(vec![(Some(occur), self)])
}
fn compose(occur: Occur, asts: Vec<UserInputAST>) -> UserInputAST {
assert_ne!(occur, Occur::MustNot);
assert!(!asts.is_empty());
if asts.len() == 1 {
asts.into_iter().next().unwrap() //< safe
} else {
UserInputAST::Clause(
asts.into_iter()
.map(|ast: UserInputAST| (Some(occur), ast))
.collect::<Vec<_>>(),
)
}
}
pub fn empty_query() -> UserInputAST {
UserInputAST::Clause(Vec::default())
}
pub fn and(asts: Vec<UserInputAST>) -> UserInputAST {
UserInputAST::compose(Occur::Must, asts)
}
pub fn or(asts: Vec<UserInputAST>) -> UserInputAST {
UserInputAST::compose(Occur::Should, asts)
}
}
impl From<UserInputLiteral> for UserInputLeaf {
fn from(literal: UserInputLiteral) -> UserInputLeaf {
UserInputLeaf::Literal(literal)
}
}
impl From<UserInputLeaf> for UserInputAST {
fn from(leaf: UserInputLeaf) -> UserInputAST {
UserInputAST::Leaf(Box::new(leaf))
}
}
fn print_occur_ast(
occur_opt: Option<Occur>,
ast: &UserInputAST,
formatter: &mut fmt::Formatter,
) -> fmt::Result {
if let Some(occur) = occur_opt {
write!(formatter, "{}{:?}", occur, ast)?;
} else {
write!(formatter, "*{:?}", ast)?;
}
Ok(())
}
impl fmt::Debug for UserInputAST {
fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
match *self {
UserInputAST::Clause(ref subqueries) => {
if subqueries.is_empty() {
write!(formatter, "<emptyclause>")?;
} else {
write!(formatter, "(")?;
print_occur_ast(subqueries[0].0, &subqueries[0].1, formatter)?;
for subquery in &subqueries[1..] {
write!(formatter, " ")?;
print_occur_ast(subquery.0, &subquery.1, formatter)?;
}
write!(formatter, ")")?;
}
Ok(())
}
UserInputAST::Leaf(ref subquery) => write!(formatter, "{:?}", subquery),
UserInputAST::Boost(ref leaf, boost) => write!(formatter, "({:?})^{}", leaf, boost),
}
}
}

2
run-tests.sh Executable file
View File

@@ -0,0 +1,2 @@
#!/bin/bash
cargo test

142
src/collector/chained_collector.rs
View File

@@ -1,142 +0,0 @@
use collector::Collector;
use DocId;
use Result;
use Score;
use SegmentLocalId;
use SegmentReader;
/// Collector that does nothing.
/// This is used in the chain Collector and will hopefully
/// be optimized away by the compiler.
pub struct DoNothingCollector;
impl Collector for DoNothingCollector {
#[inline]
fn set_segment(&mut self, _: SegmentLocalId, _: &SegmentReader) -> Result<()> {
Ok(())
}
#[inline]
fn collect(&mut self, _doc: DocId, _score: Score) {}
#[inline]
fn requires_scoring(&self) -> bool {
false
}
}
/// Zero-cost abstraction used to collect on multiple collectors.
/// This contraption is only usable if the type of your collectors
/// are known at compile time.
///
/// ```rust
/// #[macro_use]
/// extern crate tantivy;
/// use tantivy::schema::{SchemaBuilder, TEXT};
/// use tantivy::{Index, Result};
/// use tantivy::collector::{CountCollector, TopCollector, chain};
/// use tantivy::query::QueryParser;
///
/// # fn main() { example().unwrap(); }
/// fn example() -> Result<()> {
/// let mut schema_builder = SchemaBuilder::new();
/// let title = schema_builder.add_text_field("title", TEXT);
/// let schema = schema_builder.build();
/// let index = Index::create_in_ram(schema);
/// {
/// let mut index_writer = index.writer(3_000_000)?;
/// index_writer.add_document(doc!(
/// title => "The Name of the Wind",
/// ));
/// index_writer.add_document(doc!(
/// title => "The Diary of Muadib",
/// ));
/// index_writer.add_document(doc!(
/// title => "A Dairy Cow",
/// ));
/// index_writer.add_document(doc!(
/// title => "The Diary of a Young Girl",
/// ));
/// index_writer.commit().unwrap();
/// }
///
/// index.load_searchers()?;
/// let searcher = index.searcher();
///
/// {
/// let mut top_collector = TopCollector::with_limit(2);
/// let mut count_collector = CountCollector::default();
/// {
/// let mut collectors = chain().push(&mut top_collector).push(&mut count_collector);
/// let query_parser = QueryParser::for_index(&index, vec![title]);
/// let query = query_parser.parse_query("diary")?;
/// searcher.search(&*query, &mut collectors).unwrap();
/// }
/// assert_eq!(count_collector.count(), 2);
/// assert!(top_collector.at_capacity());
/// }
///
/// Ok(())
/// }
/// ```
pub struct ChainedCollector<Left: Collector, Right: Collector> {
left: Left,
right: Right,
}
impl<Left: Collector, Right: Collector> ChainedCollector<Left, Right> {
/// Adds a collector
pub fn push<C: Collector>(self, new_collector: &mut C) -> ChainedCollector<Self, &mut C> {
ChainedCollector {
left: self,
right: new_collector,
}
}
}
impl<Left: Collector, Right: Collector> Collector for ChainedCollector<Left, Right> {
fn set_segment(
&mut self,
segment_local_id: SegmentLocalId,
segment: &SegmentReader,
) -> Result<()> {
self.left.set_segment(segment_local_id, segment)?;
self.right.set_segment(segment_local_id, segment)?;
Ok(())
}
fn collect(&mut self, doc: DocId, score: Score) {
self.left.collect(doc, score);
self.right.collect(doc, score);
}
fn requires_scoring(&self) -> bool {
self.left.requires_scoring() || self.right.requires_scoring()
}
}
/// Creates a `ChainedCollector`
pub fn chain() -> ChainedCollector<DoNothingCollector, DoNothingCollector> {
ChainedCollector {
left: DoNothingCollector,
right: DoNothingCollector,
}
}
#[cfg(test)]
mod tests {
use super::*;
use collector::{Collector, CountCollector, TopCollector};
#[test]
fn test_chained_collector() {
let mut top_collector = TopCollector::with_limit(2);
let mut count_collector = CountCollector::default();
{
let mut collectors = chain().push(&mut top_collector).push(&mut count_collector);
collectors.collect(1, 0.2);
collectors.collect(2, 0.1);
collectors.collect(3, 0.5);
}
assert_eq!(count_collector.count(), 3);
assert!(top_collector.at_capacity());
}
}

155
src/collector/count_collector.rs
View File

@@ -1,101 +1,114 @@
use super::Collector;
use DocId;
use Result;
use Score;
use SegmentLocalId;
use SegmentReader;
use crate::collector::SegmentCollector;
use crate::DocId;
use crate::Score;
use crate::SegmentLocalId;
use crate::SegmentReader;
/// `CountCollector` collector only counts how many
/// documents match the query.
///
/// ```rust
/// #[macro_use]
/// extern crate tantivy;
/// use tantivy::schema::{SchemaBuilder, TEXT};
/// use tantivy::{Index, Result};
/// use tantivy::collector::CountCollector;
/// use tantivy::collector::Count;
/// use tantivy::query::QueryParser;
/// use tantivy::schema::{Schema, TEXT};
/// use tantivy::{doc, Index};
///
/// # fn main() { example().unwrap(); }
/// fn example() -> Result<()> {
/// let mut schema_builder = SchemaBuilder::new();
/// let title = schema_builder.add_text_field("title", TEXT);
/// let schema = schema_builder.build();
/// let index = Index::create_in_ram(schema);
/// {
/// let mut index_writer = index.writer(3_000_000)?;
/// index_writer.add_document(doc!(
/// title => "The Name of the Wind",
/// ));
/// index_writer.add_document(doc!(
/// title => "The Diary of Muadib",
/// ));
/// index_writer.add_document(doc!(
/// title => "A Dairy Cow",
/// ));
/// index_writer.add_document(doc!(
/// title => "The Diary of a Young Girl",
/// ));
/// index_writer.commit().unwrap();
/// }
/// let mut schema_builder = Schema::builder();
/// let title = schema_builder.add_text_field("title", TEXT);
/// let schema = schema_builder.build();
/// let index = Index::create_in_ram(schema);
///
/// index.load_searchers()?;
/// let searcher = index.searcher();
/// let mut index_writer = index.writer(3_000_000).unwrap();
/// index_writer.add_document(doc!(title => "The Name of the Wind"));
/// index_writer.add_document(doc!(title => "The Diary of Muadib"));
/// index_writer.add_document(doc!(title => "A Dairy Cow"));
/// index_writer.add_document(doc!(title => "The Diary of a Young Girl"));
/// assert!(index_writer.commit().is_ok());
///
/// {
/// let mut count_collector = CountCollector::default();
/// let query_parser = QueryParser::for_index(&index, vec![title]);
/// let query = query_parser.parse_query("diary")?;
/// searcher.search(&*query, &mut count_collector).unwrap();
/// let reader = index.reader().unwrap();
/// let searcher = reader.searcher();
///
/// assert_eq!(count_collector.count(), 2);
/// }
/// // Here comes the important part
/// let query_parser = QueryParser::for_index(&index, vec![title]);
/// let query = query_parser.parse_query("diary").unwrap();
/// let count = searcher.search(&query, &Count).unwrap();
///
/// Ok(())
/// }
/// assert_eq!(count, 2);
/// ```
#[derive(Default)]
pub struct CountCollector {
count: usize,
}
pub struct Count;
impl CountCollector {
/// Returns the count of documents that were
/// collected.
pub fn count(&self) -> usize {
self.count
}
}
impl Collector for Count {
type Fruit = usize;
impl Collector for CountCollector {
fn set_segment(&mut self, _: SegmentLocalId, _: &SegmentReader) -> Result<()> {
Ok(())
}
type Child = SegmentCountCollector;
fn collect(&mut self, _: DocId, _: Score) {
self.count += 1;
fn for_segment(
&self,
_: SegmentLocalId,
_: &SegmentReader,
) -> crate::Result<SegmentCountCollector> {
Ok(SegmentCountCollector::default())
}
fn requires_scoring(&self) -> bool {
false
}
fn merge_fruits(&self, segment_counts: Vec<usize>) -> crate::Result<usize> {
Ok(segment_counts.into_iter().sum())
}
}
#[derive(Default)]
pub struct SegmentCountCollector {
count: usize,
}
impl SegmentCollector for SegmentCountCollector {
type Fruit = usize;
fn collect(&mut self, _: DocId, _: Score) {
self.count += 1;
}
fn harvest(self) -> usize {
self.count
}
}
#[cfg(test)]
mod tests {
use collector::{Collector, CountCollector};
use super::{Count, SegmentCountCollector};
use crate::collector::Collector;
use crate::collector::SegmentCollector;
#[test]
fn test_count_collector() {
let mut count_collector = CountCollector::default();
assert_eq!(count_collector.count(), 0);
count_collector.collect(0u32, 1f32);
assert_eq!(count_collector.count(), 1);
assert_eq!(count_collector.count(), 1);
count_collector.collect(1u32, 1f32);
assert_eq!(count_collector.count(), 2);
assert!(!count_collector.requires_scoring());
fn test_count_collect_does_not_requires_scoring() {
assert!(!Count.requires_scoring());
}
#[test]
fn test_segment_count_collector() {
{
let count_collector = SegmentCountCollector::default();
assert_eq!(count_collector.harvest(), 0);
}
{
let mut count_collector = SegmentCountCollector::default();
count_collector.collect(0u32, 1.0);
assert_eq!(count_collector.harvest(), 1);
}
{
let mut count_collector = SegmentCountCollector::default();
count_collector.collect(0u32, 1.0);
assert_eq!(count_collector.harvest(), 1);
}
{
let mut count_collector = SegmentCountCollector::default();
count_collector.collect(0u32, 1.0);
count_collector.collect(1u32, 1.0);
assert_eq!(count_collector.harvest(), 2);
}
}
}

125
src/collector/custom_score_top_collector.rs Normal file
View File

@@ -0,0 +1,125 @@
use crate::collector::top_collector::{TopCollector, TopSegmentCollector};
use crate::collector::{Collector, SegmentCollector};
use crate::{DocAddress, DocId, Score, SegmentReader};
pub(crate) struct CustomScoreTopCollector<TCustomScorer, TScore = Score> {
custom_scorer: TCustomScorer,
collector: TopCollector<TScore>,
}
impl<TCustomScorer, TScore> CustomScoreTopCollector<TCustomScorer, TScore>
where
TScore: Clone + PartialOrd,
{
pub(crate) fn new(
custom_scorer: TCustomScorer,
collector: TopCollector<TScore>,
) -> CustomScoreTopCollector<TCustomScorer, TScore> {
CustomScoreTopCollector {
custom_scorer,
collector,
}
}
}
/// A custom segment scorer makes it possible to define any kind of score
/// for a given document belonging to a specific segment.
///
/// It is the segment local version of the [`CustomScorer`](./trait.CustomScorer.html).
pub trait CustomSegmentScorer<TScore>: 'static {
/// Computes the score of a specific `doc`.
fn score(&mut self, doc: DocId) -> TScore;
}
/// `CustomScorer` makes it possible to define any kind of score.
///
/// The `CustomerScorer` itself does not make much of the computation itself.
/// Instead, it helps constructing `Self::Child` instances that will compute
/// the score at a segment scale.
pub trait CustomScorer<TScore>: Sync {
/// Type of the associated [`CustomSegmentScorer`](./trait.CustomSegmentScorer.html).
type Child: CustomSegmentScorer<TScore>;
/// Builds a child scorer for a specific segment. The child scorer is associated to
/// a specific segment.
fn segment_scorer(&self, segment_reader: &SegmentReader) -> crate::Result<Self::Child>;
}
impl<TCustomScorer, TScore> Collector for CustomScoreTopCollector<TCustomScorer, TScore>
where
TCustomScorer: CustomScorer<TScore> + Send + Sync,
TScore: 'static + PartialOrd + Clone + Send + Sync,
{
type Fruit = Vec<(TScore, DocAddress)>;
type Child = CustomScoreTopSegmentCollector<TCustomScorer::Child, TScore>;
fn for_segment(
&self,
segment_local_id: u32,
segment_reader: &SegmentReader,
) -> crate::Result<Self::Child> {
let segment_scorer = self.custom_scorer.segment_scorer(segment_reader)?;
let segment_collector = self
.collector
.for_segment(segment_local_id, segment_reader)?;
Ok(CustomScoreTopSegmentCollector {
segment_collector,
segment_scorer,
})
}
fn requires_scoring(&self) -> bool {
false
}
fn merge_fruits(&self, segment_fruits: Vec<Self::Fruit>) -> crate::Result<Self::Fruit> {
self.collector.merge_fruits(segment_fruits)
}
}
pub struct CustomScoreTopSegmentCollector<T, TScore>
where
TScore: 'static + PartialOrd + Clone + Send + Sync + Sized,
T: CustomSegmentScorer<TScore>,
{
segment_collector: TopSegmentCollector<TScore>,
segment_scorer: T,
}
impl<T, TScore> SegmentCollector for CustomScoreTopSegmentCollector<T, TScore>
where
TScore: 'static + PartialOrd + Clone + Send + Sync,
T: 'static + CustomSegmentScorer<TScore>,
{
type Fruit = Vec<(TScore, DocAddress)>;
fn collect(&mut self, doc: DocId, _score: Score) {
let score = self.segment_scorer.score(doc);
self.segment_collector.collect(doc, score);
}
fn harvest(self) -> Vec<(TScore, DocAddress)> {
self.segment_collector.harvest()
}
}
impl<F, TScore, T> CustomScorer<TScore> for F
where
F: 'static + Send + Sync + Fn(&SegmentReader) -> T,
T: CustomSegmentScorer<TScore>,
{
type Child = T;
fn segment_scorer(&self, segment_reader: &SegmentReader) -> crate::Result<Self::Child> {
Ok((self)(segment_reader))
}
}
impl<F, TScore> CustomSegmentScorer<TScore> for F
where
F: 'static + FnMut(DocId) -> TScore,
{
fn score(&mut self, doc: DocId) -> TScore {
(self)(doc)
}
}

557
src/collector/facet_collector.rs
View File

@@ -1,25 +1,21 @@
use collector::Collector;
use docset::SkipResult;
use fastfield::FacetReader;
use schema::Facet;
use schema::Field;
use std::cell::UnsafeCell;
use crate::collector::Collector;
use crate::collector::SegmentCollector;
use crate::fastfield::FacetReader;
use crate::schema::Facet;
use crate::schema::Field;
use crate::DocId;
use crate::Score;
use crate::SegmentLocalId;
use crate::SegmentReader;
use crate::TantivyError;
use std::cmp::Ordering;
use std::collections::btree_map;
use std::collections::BTreeMap;
use std::collections::BTreeSet;
use std::collections::BinaryHeap;
use std::collections::Bound;
use std::iter::Peekable;
use std::mem;
use std::{u64, usize};
use termdict::TermMerger;
use std::cmp::Ordering;
use DocId;
use Result;
use Score;
use SegmentLocalId;
use SegmentReader;
struct Hit<'a> {
count: u64,
@@ -29,13 +25,13 @@ struct Hit<'a> {
impl<'a> Eq for Hit<'a> {}
impl<'a> PartialEq<Hit<'a>> for Hit<'a> {
fn eq(&self, other: &Hit) -> bool {
fn eq(&self, other: &Hit<'_>) -> bool {
self.count == other.count
}
}
impl<'a> PartialOrd<Hit<'a>> for Hit<'a> {
fn partial_cmp(&self, other: &Hit) -> Option<Ordering> {
fn partial_cmp(&self, other: &Hit<'_>) -> Option<Ordering> {
Some(self.cmp(other))
}
}
@@ -46,12 +42,6 @@ impl<'a> Ord for Hit<'a> {
}
}
struct SegmentFacetCounter {
pub facet_reader: FacetReader,
pub facet_ords: Vec<u64>,
pub facet_counts: Vec<u64>,
}
fn facet_depth(facet_bytes: &[u8]) -> usize {
if facet_bytes.is_empty() {
0
@@ -89,16 +79,13 @@ fn facet_depth(facet_bytes: &[u8]) -> usize {
///
///
/// ```rust
/// #[macro_use]
/// extern crate tantivy;
/// use tantivy::schema::{Facet, SchemaBuilder, TEXT};
/// use tantivy::{Index, Result};
/// use tantivy::collector::FacetCollector;
/// use tantivy::query::AllQuery;
/// use tantivy::schema::{Facet, Schema, TEXT};
/// use tantivy::{doc, Index};
///
/// # fn main() { example().unwrap(); }
/// fn example() -> Result<()> {
/// let mut schema_builder = SchemaBuilder::new();
/// fn example() -> tantivy::Result<()> {
/// let mut schema_builder = Schema::builder();
///
/// // Facet have their own specific type.
/// // It is not a bad practise to put all of your
@@ -131,23 +118,19 @@ fn facet_depth(facet_bytes: &[u8]) -> usize {
/// facet => Facet::from("/lang/en"),
/// facet => Facet::from("/category/biography")
/// ));
/// index_writer.commit().unwrap();
/// index_writer.commit()?;
/// }
///
/// index.load_searchers()?;
/// let searcher = index.searcher();
/// let reader = index.reader()?;
/// let searcher = reader.searcher();
///
/// {
/// let mut facet_collector = FacetCollector::for_field(facet);
/// let mut facet_collector = FacetCollector::for_field(facet);
/// facet_collector.add_facet("/lang");
/// facet_collector.add_facet("/category");
/// searcher.search(&AllQuery, &mut facet_collector).unwrap();
///
/// // this object contains count aggregate for all of the facets.
/// let counts = facet_collector.harvest();
/// let facet_counts = searcher.search(&AllQuery, &facet_collector)?;
///
/// // This lists all of the facet counts
/// let facets: Vec<(&Facet, u64)> = counts
/// let facets: Vec<(&Facet, u64)> = facet_counts
/// .get("/category")
/// .collect();
/// assert_eq!(facets, vec![
@@ -157,15 +140,12 @@ fn facet_depth(facet_bytes: &[u8]) -> usize {
/// }
///
/// {
/// let mut facet_collector = FacetCollector::for_field(facet);
/// let mut facet_collector = FacetCollector::for_field(facet);
/// facet_collector.add_facet("/category/fiction");
/// searcher.search(&AllQuery, &mut facet_collector).unwrap();
///
/// // this object contains count aggregate for all of the facets.
/// let counts = facet_collector.harvest();
/// let facet_counts = searcher.search(&AllQuery, &facet_collector)?;
///
/// // This lists all of the facet counts
/// let facets: Vec<(&Facet, u64)> = counts
/// let facets: Vec<(&Facet, u64)> = facet_counts
/// .get("/category/fiction")
/// .collect();
/// assert_eq!(facets, vec![
@@ -175,16 +155,13 @@ fn facet_depth(facet_bytes: &[u8]) -> usize {
/// ]);
/// }
///
/// {
/// let mut facet_collector = FacetCollector::for_field(facet);
/// {
/// let mut facet_collector = FacetCollector::for_field(facet);
/// facet_collector.add_facet("/category/fiction");
/// searcher.search(&AllQuery, &mut facet_collector).unwrap();
///
/// // this object contains count aggregate for all of the facets.
/// let counts = facet_collector.harvest();
/// let facet_counts = searcher.search(&AllQuery, &facet_collector)?;
///
/// // This lists all of the facet counts
/// let facets: Vec<(&Facet, u64)> = counts.top_k("/category/fiction", 1);
/// let facets: Vec<(&Facet, u64)> = facet_counts.top_k("/category/fiction", 1);
/// assert_eq!(facets, vec![
/// (&Facet::from("/category/fiction/fantasy"), 2)
/// ]);
@@ -192,40 +169,46 @@ fn facet_depth(facet_bytes: &[u8]) -> usize {
///
/// Ok(())
/// }
/// # assert!(example().is_ok());
/// ```
pub struct FacetCollector {
facet_ords: Vec<u64>,
field: Field,
ff_reader: Option<UnsafeCell<FacetReader>>,
segment_counters: Vec<SegmentFacetCounter>,
// facet_ord -> collapse facet_id
current_segment_collapse_mapping: Vec<usize>,
// collapse facet_id -> count
current_segment_counts: Vec<u64>,
// collapse facet_id -> facet_ord
current_collapse_facet_ords: Vec<u64>,
facets: BTreeSet<Facet>,
}
pub struct FacetSegmentCollector {
reader: FacetReader,
facet_ords_buf: Vec<u64>,
// facet_ord -> collapse facet_id
collapse_mapping: Vec<usize>,
// collapse facet_id -> count
counts: Vec<u64>,
// collapse facet_id -> facet_ord
collapse_facet_ords: Vec<u64>,
}
enum SkipResult {
Found,
NotFound,
}
fn skip<'a, I: Iterator<Item = &'a Facet>>(
target: &[u8],
collapse_it: &mut Peekable<I>,
) -> SkipResult {
loop {
match collapse_it.peek() {
Some(facet_bytes) => match facet_bytes.encoded_bytes().cmp(target) {
Some(facet_bytes) => match facet_bytes.encoded_str().as_bytes().cmp(target) {
Ordering::Less => {}
Ordering::Greater => {
return SkipResult::OverStep;
return SkipResult::NotFound;
}
Ordering::Equal => {
return SkipResult::Reached;
return SkipResult::Found;
}
},
None => {
return SkipResult::End;
return SkipResult::NotFound;
}
}
collapse_it.next();
@@ -240,15 +223,8 @@ impl FacetCollector {
/// is of the proper type.
pub fn for_field(field: Field) -> FacetCollector {
FacetCollector {
facet_ords: Vec::with_capacity(255),
segment_counters: Vec::new(),
field,
ff_reader: None,
facets: BTreeSet::new(),
current_segment_collapse_mapping: Vec::new(),
current_collapse_facet_ords: Vec::new(),
current_segment_counts: Vec::new(),
facets: BTreeSet::default(),
}
}
@@ -278,141 +254,103 @@ impl FacetCollector {
}
self.facets.insert(facet);
}
fn set_collapse_mapping(&mut self, facet_reader: &FacetReader) {
self.current_segment_collapse_mapping.clear();
self.current_collapse_facet_ords.clear();
self.current_segment_counts.clear();
let mut collapse_facet_it = self.facets.iter().peekable();
self.current_collapse_facet_ords.push(0);
let mut facet_streamer = facet_reader.facet_dict().range().into_stream();
if !facet_streamer.advance() {
return;
}
'outer: loop {
// at the begining of this loop, facet_streamer
// is positionned on a term that has not been processed yet.
let skip_result = skip(facet_streamer.key(), &mut collapse_facet_it);
match skip_result {
SkipResult::Reached => {
// we reach a facet we decided to collapse.
let collapse_depth = facet_depth(facet_streamer.key());
let mut collapsed_id = 0;
self.current_segment_collapse_mapping.push(0);
while facet_streamer.advance() {
let depth = facet_depth(facet_streamer.key());
if depth <= collapse_depth {
continue 'outer;
}
if depth == collapse_depth + 1 {
collapsed_id = self.current_collapse_facet_ords.len();
self.current_collapse_facet_ords
.push(facet_streamer.term_ord());
self.current_segment_collapse_mapping.push(collapsed_id);
} else {
self.current_segment_collapse_mapping.push(collapsed_id);
}
}
break;
}
SkipResult::End | SkipResult::OverStep => {
self.current_segment_collapse_mapping.push(0);
if !facet_streamer.advance() {
break;
}
}
}
}
}
fn finalize_segment(&mut self) {
if self.ff_reader.is_some() {
self.segment_counters.push(SegmentFacetCounter {
facet_reader: self.ff_reader.take().unwrap().into_inner(),
facet_ords: mem::replace(&mut self.current_collapse_facet_ords, Vec::new()),
facet_counts: mem::replace(&mut self.current_segment_counts, Vec::new()),
});
}
}
/// Returns the results of the collection.
///
/// This method does not just return the counters,
/// it also translates the facet ordinals of the last segment.
pub fn harvest(mut self) -> FacetCounts {
self.finalize_segment();
let collapsed_facet_ords: Vec<&[u64]> = self.segment_counters
.iter()
.map(|segment_counter| &segment_counter.facet_ords[..])
.collect();
let collapsed_facet_counts: Vec<&[u64]> = self.segment_counters
.iter()
.map(|segment_counter| &segment_counter.facet_counts[..])
.collect();
let facet_streams = self.segment_counters
.iter()
.map(|seg_counts| seg_counts.facet_reader.facet_dict().range().into_stream())
.collect::<Vec<_>>();
let mut facet_merger = TermMerger::new(facet_streams);
let mut facet_counts = BTreeMap::new();
while facet_merger.advance() {
let count = facet_merger
.current_kvs()
.iter()
.map(|it| {
let seg_ord = it.segment_ord;
let term_ord = it.streamer.term_ord();
collapsed_facet_ords[seg_ord]
.binary_search(&term_ord)
.map(|collapsed_term_id| {
if collapsed_term_id == 0 {
0
} else {
collapsed_facet_counts[seg_ord][collapsed_term_id]
}
})
.unwrap_or(0)
})
.sum();
if count > 0u64 {
let bytes: Vec<u8> = facet_merger.key().to_owned();
// may create an corrupted facet if the term dicitonary is corrupted
let facet = unsafe { Facet::from_encoded(bytes) };
facet_counts.insert(facet, count);
}
}
FacetCounts { facet_counts }
}
}
impl Collector for FacetCollector {
fn set_segment(&mut self, _: SegmentLocalId, reader: &SegmentReader) -> Result<()> {
self.finalize_segment();
let facet_reader = reader.facet_reader(self.field)?;
self.set_collapse_mapping(&facet_reader);
self.current_segment_counts
.resize(self.current_collapse_facet_ords.len(), 0);
self.ff_reader = Some(UnsafeCell::new(facet_reader));
Ok(())
type Fruit = FacetCounts;
type Child = FacetSegmentCollector;
fn for_segment(
&self,
_: SegmentLocalId,
reader: &SegmentReader,
) -> crate::Result<FacetSegmentCollector> {
let field_name = reader.schema().get_field_name(self.field);
let facet_reader = reader.facet_reader(self.field).ok_or_else(|| {
TantivyError::SchemaError(format!("Field {:?} is not a facet field.", field_name))
})?;
let mut collapse_mapping = Vec::new();
let mut counts = Vec::new();
let mut collapse_facet_ords = Vec::new();
let mut collapse_facet_it = self.facets.iter().peekable();
collapse_facet_ords.push(0);
{
let mut facet_streamer = facet_reader.facet_dict().range().into_stream();
if facet_streamer.advance() {
'outer: loop {
// at the begining of this loop, facet_streamer
// is positionned on a term that has not been processed yet.
let skip_result = skip(facet_streamer.key(), &mut collapse_facet_it);
match skip_result {
SkipResult::Found => {
// we reach a facet we decided to collapse.
let collapse_depth = facet_depth(facet_streamer.key());
let mut collapsed_id = 0;
collapse_mapping.push(0);
while facet_streamer.advance() {
let depth = facet_depth(facet_streamer.key());
if depth <= collapse_depth {
continue 'outer;
}
if depth == collapse_depth + 1 {
collapsed_id = collapse_facet_ords.len();
collapse_facet_ords.push(facet_streamer.term_ord());
collapse_mapping.push(collapsed_id);
} else {
collapse_mapping.push(collapsed_id);
}
}
break;
}
SkipResult::NotFound => {
collapse_mapping.push(0);
if !facet_streamer.advance() {
break;
}
}
}
}
}
}
counts.resize(collapse_facet_ords.len(), 0);
Ok(FacetSegmentCollector {
reader: facet_reader,
facet_ords_buf: Vec::with_capacity(255),
collapse_mapping,
counts,
collapse_facet_ords,
})
}
fn requires_scoring(&self) -> bool {
false
}
fn merge_fruits(&self, segments_facet_counts: Vec<FacetCounts>) -> crate::Result<FacetCounts> {
let mut facet_counts: BTreeMap<Facet, u64> = BTreeMap::new();
for segment_facet_counts in segments_facet_counts {
for (facet, count) in segment_facet_counts.facet_counts {
*(facet_counts.entry(facet).or_insert(0)) += count;
}
}
Ok(FacetCounts { facet_counts })
}
}
impl SegmentCollector for FacetSegmentCollector {
type Fruit = FacetCounts;
fn collect(&mut self, doc: DocId, _: Score) {
let facet_reader: &mut FacetReader = unsafe {
&mut *self.ff_reader
.as_ref()
.expect("collect() was called before set_segment. This should never happen.")
.get()
};
facet_reader.facet_ords(doc, &mut self.facet_ords);
self.reader.facet_ords(doc, &mut self.facet_ords_buf);
let mut previous_collapsed_ord: usize = usize::MAX;
for &facet_ord in &self.facet_ords {
let collapsed_ord = self.current_segment_collapse_mapping[facet_ord as usize];
self.current_segment_counts[collapsed_ord] += if collapsed_ord == previous_collapsed_ord
{
for &facet_ord in &self.facet_ords_buf {
let collapsed_ord = self.collapse_mapping[facet_ord as usize];
self.counts[collapsed_ord] += if collapsed_ord == previous_collapsed_ord {
0
} else {
1
@@ -421,8 +359,24 @@ impl Collector for FacetCollector {
}
}
fn requires_scoring(&self) -> bool {
false
/// Returns the results of the collection.
///
/// This method does not just return the counters,
/// it also translates the facet ordinals of the last segment.
fn harvest(self) -> FacetCounts {
let mut facet_counts = BTreeMap::new();
let facet_dict = self.reader.facet_dict();
for (collapsed_facet_ord, count) in self.counts.iter().cloned().enumerate() {
if count == 0 {
continue;
}
let mut facet = vec![];
let facet_ord = self.collapse_facet_ords[collapsed_facet_ord];
facet_dict.ord_to_term(facet_ord as u64, &mut facet);
// TODO
facet_counts.insert(Facet::from_encoded(facet).unwrap(), count);
}
FacetCounts { facet_counts }
}
}
@@ -445,7 +399,7 @@ impl<'a> Iterator for FacetChildIterator<'a> {
}
impl FacetCounts {
pub fn get<T>(&self, facet_from: T) -> FacetChildIterator
pub fn get<T>(&self, facet_from: T) -> FacetChildIterator<'_>
where
Facet: From<T>,
{
@@ -454,12 +408,13 @@ impl FacetCounts {
let right_bound = if facet.is_root() {
Bound::Unbounded
} else {
let mut facet_after_bytes: Vec<u8> = facet.encoded_bytes().to_owned();
facet_after_bytes.push(1u8);
let facet_after = unsafe { Facet::from_encoded(facet_after_bytes) }; // ok logic
let mut facet_after_bytes: String = facet.encoded_str().to_owned();
facet_after_bytes.push('\u{1}');
let facet_after = Facet::from_encoded_string(facet_after_bytes);
Bound::Excluded(facet_after)
};
let underlying: btree_map::Range<_, _> = self.facet_counts.range((left_bound, right_bound));
let underlying: btree_map::Range<'_, _, _> =
self.facet_counts.range((left_bound, right_bound));
FacetChildIterator { underlying }
}
@@ -470,17 +425,24 @@ impl FacetCounts {
let mut heap = BinaryHeap::with_capacity(k);
let mut it = self.get(facet);
// push the first k elements to first bring the heap
// to capacity
for (facet, count) in (&mut it).take(k) {
heap.push(Hit { count, facet });
}
let mut lowest_count: u64 = heap.peek().map(|hit| hit.count).unwrap_or(u64::MIN);
let mut lowest_count: u64 = heap.peek().map(|hit| hit.count).unwrap_or(u64::MIN); //< the `unwrap_or` case may be triggered but the value
// is never used in that case.
for (facet, count) in it {
if count > lowest_count {
lowest_count = count;
if let Some(mut head) = heap.peek_mut() {
*head = Hit { count, facet };
}
// the heap gets reconstructed at this point
if let Some(head) = heap.peek() {
lowest_count = head.count;
}
}
}
heap.into_sorted_vec()
@@ -493,16 +455,19 @@ impl FacetCounts {
#[cfg(test)]
mod tests {
use super::{FacetCollector, FacetCounts};
use core::Index;
use query::AllQuery;
use crate::collector::Count;
use crate::core::Index;
use crate::query::{AllQuery, QueryParser, TermQuery};
use crate::schema::{Document, Facet, Field, IndexRecordOption, Schema};
use crate::Term;
use rand::distributions::Uniform;
use rand::prelude::SliceRandom;
use rand::{thread_rng, Rng};
use schema::Field;
use schema::{Document, Facet, SchemaBuilder};
use std::iter;
#[test]
fn test_facet_collector_drilldown() {
let mut schema_builder = SchemaBuilder::new();
let mut schema_builder = Schema::builder();
let facet_field = schema_builder.add_facet_field("facet");
let schema = schema_builder.build();
let index = Index::create_in_ram(schema);
@@ -525,14 +490,12 @@ mod tests {
index_writer.add_document(doc);
}
index_writer.commit().unwrap();
index.load_searchers().unwrap();
let searcher = index.searcher();
let reader = index.reader().unwrap();
let searcher = reader.searcher();
let mut facet_collector = FacetCollector::for_field(facet_field);
facet_collector.add_facet(Facet::from("/top1"));
searcher.search(&AllQuery, &mut facet_collector).unwrap();
let counts = searcher.search(&AllQuery, &facet_collector).unwrap();
let counts: FacetCounts = facet_collector.harvest();
{
let facets: Vec<(String, u64)> = counts
.get("/top1")
@@ -545,91 +508,168 @@ mod tests {
("/top1/mid1", 50),
("/top1/mid2", 50),
("/top1/mid3", 50),
].iter()
.map(|&(facet_str, count)| (String::from(facet_str), count))
.collect::<Vec<_>>()
]
.iter()
.map(|&(facet_str, count)| (String::from(facet_str), count))
.collect::<Vec<_>>()
);
}
}
#[test]
#[should_panic(
expected = "Tried to add a facet which is a descendant of \
an already added facet."
)]
#[should_panic(expected = "Tried to add a facet which is a descendant of \
an already added facet.")]
fn test_misused_facet_collector() {
let mut facet_collector = FacetCollector::for_field(Field(0));
let mut facet_collector = FacetCollector::for_field(Field::from_field_id(0));
facet_collector.add_facet(Facet::from("/country"));
facet_collector.add_facet(Facet::from("/country/europe"));
}
#[test]
fn test_doc_unsorted_multifacet() {
let mut schema_builder = Schema::builder();
let facet_field = schema_builder.add_facet_field("facets");
let schema = schema_builder.build();
let index = Index::create_in_ram(schema);
let mut index_writer = index.writer_with_num_threads(1, 3_000_000).unwrap();
index_writer.add_document(doc!(
facet_field => Facet::from_text(&"/subjects/A/a"),
facet_field => Facet::from_text(&"/subjects/B/a"),
facet_field => Facet::from_text(&"/subjects/A/b"),
facet_field => Facet::from_text(&"/subjects/B/b"),
));
index_writer.commit().unwrap();
let reader = index.reader().unwrap();
let searcher = reader.searcher();
assert_eq!(searcher.num_docs(), 1);
let mut facet_collector = FacetCollector::for_field(facet_field);
facet_collector.add_facet("/subjects");
let counts = searcher.search(&AllQuery, &facet_collector).unwrap();
let facets: Vec<(&Facet, u64)> = counts.get("/subjects").collect();
assert_eq!(facets[0].1, 1);
}
#[test]
fn test_doc_search_by_facet() {
let mut schema_builder = Schema::builder();
let facet_field = schema_builder.add_facet_field("facet");
let schema = schema_builder.build();
let index = Index::create_in_ram(schema);
let mut index_writer = index.writer_with_num_threads(1, 3_000_000).unwrap();
index_writer.add_document(doc!(
facet_field => Facet::from_text(&"/A/A"),
));
index_writer.add_document(doc!(
facet_field => Facet::from_text(&"/A/B"),
));
index_writer.add_document(doc!(
facet_field => Facet::from_text(&"/A/C/A"),
));
index_writer.add_document(doc!(
facet_field => Facet::from_text(&"/D/C/A"),
));
index_writer.commit().unwrap();
let reader = index.reader().unwrap();
let searcher = reader.searcher();
assert_eq!(searcher.num_docs(), 4);
let count_facet = |facet_str: &str| {
let term = Term::from_facet(facet_field, &Facet::from_text(facet_str));
searcher
.search(&TermQuery::new(term, IndexRecordOption::Basic), &Count)
.unwrap()
};
assert_eq!(count_facet("/"), 4);
assert_eq!(count_facet("/A"), 3);
assert_eq!(count_facet("/A/B"), 1);
assert_eq!(count_facet("/A/C"), 1);
assert_eq!(count_facet("/A/C/A"), 1);
assert_eq!(count_facet("/C/A"), 0);
{
let query_parser = QueryParser::for_index(&index, vec![]);
{
let query = query_parser.parse_query("facet:/A/B").unwrap();
assert_eq!(1, searcher.search(&query, &Count).unwrap());
}
{
let query = query_parser.parse_query("facet:/A").unwrap();
assert_eq!(3, searcher.search(&query, &Count).unwrap());
}
}
}
#[test]
fn test_non_used_facet_collector() {
let mut facet_collector = FacetCollector::for_field(Field(0));
let mut facet_collector = FacetCollector::for_field(Field::from_field_id(0));
facet_collector.add_facet(Facet::from("/country"));
facet_collector.add_facet(Facet::from("/countryeurope"));
}
#[test]
fn test_facet_collector_topk() {
let mut schema_builder = SchemaBuilder::new();
let mut schema_builder = Schema::builder();
let facet_field = schema_builder.add_facet_field("facet");
let schema = schema_builder.build();
let index = Index::create_in_ram(schema);
let uniform = Uniform::new_inclusive(1, 100_000);
let mut docs: Vec<Document> = vec![("a", 10), ("b", 100), ("c", 7), ("d", 12), ("e", 21)]
.into_iter()
.flat_map(|(c, count)| {
let facet = Facet::from(&format!("/facet_{}", c));
let facet = Facet::from(&format!("/facet/{}", c));
let doc = doc!(facet_field => facet);
iter::repeat(doc).take(count)
})
.map(|mut doc| {
doc.add_facet(
facet_field,
&format!("/facet/{}", thread_rng().sample(&uniform)),
);
doc
})
.collect();
thread_rng().shuffle(&mut docs[..]);
docs[..].shuffle(&mut thread_rng());
let mut index_writer = index.writer_with_num_threads(1, 3_000_000).unwrap();
for doc in docs {
index_writer.add_document(doc);
}
index_writer.commit().unwrap();
index.load_searchers().unwrap();
let searcher = index.searcher();
let searcher = index.reader().unwrap().searcher();
let mut facet_collector = FacetCollector::for_field(facet_field);
facet_collector.add_facet("/");
searcher.search(&AllQuery, &mut facet_collector).unwrap();
facet_collector.add_facet("/facet");
let counts: FacetCounts = searcher.search(&AllQuery, &facet_collector).unwrap();
let counts: FacetCounts = facet_collector.harvest();
{
let facets: Vec<(&Facet, u64)> = counts.top_k("/", 3);
let facets: Vec<(&Facet, u64)> = counts.top_k("/facet", 3);
assert_eq!(
facets,
vec![
(&Facet::from("/facet_b"), 100),
(&Facet::from("/facet_e"), 21),
(&Facet::from("/facet_d"), 12),
(&Facet::from("/facet/b"), 100),
(&Facet::from("/facet/e"), 21),
(&Facet::from("/facet/d"), 12),
]
);
}
}
}
#[cfg(all(test, feature = "unstable"))]
mod bench {
use collector::FacetCollector;
use query::AllQuery;
use rand::{thread_rng, Rng};
use schema::Facet;
use schema::SchemaBuilder;
use crate::collector::FacetCollector;
use crate::query::AllQuery;
use crate::schema::{Facet, Schema};
use crate::Index;
use rand::seq::SliceRandom;
use rand::thread_rng;
use test::Bencher;
use Index;
#[bench]
fn bench_facet_collector(b: &mut Bencher) {
let mut schema_builder = SchemaBuilder::new();
let mut schema_builder = Schema::builder();
let facet_field = schema_builder.add_facet_field("facet");
let schema = schema_builder.build();
let index = Index::create_in_ram(schema);
@@ -642,19 +682,18 @@ mod bench {
}
}
// 40425 docs
thread_rng().shuffle(&mut docs[..]);
docs[..].shuffle(&mut thread_rng());
let mut index_writer = index.writer_with_num_threads(1, 3_000_000).unwrap();
for doc in docs {
index_writer.add_document(doc);
}
index_writer.commit().unwrap();
index.load_searchers().unwrap();
let reader = index.reader().unwrap();
b.iter(|| {
let searcher = index.searcher();
let mut facet_collector = FacetCollector::for_field(facet_field);
searcher.search(&AllQuery, &mut facet_collector).unwrap();
let searcher = reader.searcher();
let facet_collector = FacetCollector::for_field(facet_field);
searcher.search(&AllQuery, &facet_collector).unwrap();
});
}
}

14
src/collector/int_facet_collector.rs
View File

@@ -79,21 +79,23 @@ mod tests {
// make sure we have facet counters correctly filled
fn test_facet_collector_results() {
let mut schema_builder = schema::SchemaBuilder::new();
let mut schema_builder = schema::Schema::builder();
let num_field_i64 = schema_builder.add_i64_field("num_i64", FAST);
let num_field_u64 = schema_builder.add_u64_field("num_u64", FAST);
let num_field_f64 = schema_builder.add_f64_field("num_f64", FAST);
let text_field = schema_builder.add_text_field("text", STRING);
let schema = schema_builder.build();
let index = Index::create_in_ram(schema.clone());
{
let mut index_writer = index.writer_with_num_threads(1, 40_000_000).unwrap();
let mut index_writer = index.writer_with_num_threads(1, 3_000_000).unwrap();
{
for i in 0u64..10u64 {
index_writer.add_document(doc!(
num_field_i64 => ((i as i64) % 3i64) as i64,
num_field_u64 => (i % 2u64) as u64,
num_field_f64 => (i % 4u64) as f64,
text_field => "text"
));
}
@@ -101,14 +103,14 @@ mod tests {
assert_eq!(index_writer.commit().unwrap(), 10u64);
}
index.load_searchers().unwrap();
let searcher = index.searcher();
let searcher = index.reader().searcher();
let mut ffvf_i64: IntFacetCollector<I64FastFieldReader> = IntFacetCollector::new(num_field_i64);
let mut ffvf_u64: IntFacetCollector<U64FastFieldReader> = IntFacetCollector::new(num_field_u64);
let mut ffvf_f64: IntFacetCollector<F64FastFieldReader> = IntFacetCollector::new(num_field_f64);
{
// perform the query
let mut facet_collectors = chain().push(&mut ffvf_i64).push(&mut ffvf_u64);
let mut facet_collectors = chain().push(&mut ffvf_i64).push(&mut ffvf_u64).push(&mut ffvf_f64);
let mut query_parser = QueryParser::for_index(index, vec![text_field]);
let query = query_parser.parse_query("text:text").unwrap();
query.search(&searcher, &mut facet_collectors).unwrap();
@@ -118,6 +120,8 @@ mod tests {
assert_eq!(ffvf_u64.counters[&1], 5);
assert_eq!(ffvf_i64.counters[&0], 4);
assert_eq!(ffvf_i64.counters[&1], 3);
assert_eq!(ffvf_f64.counters[&0.0], 3);
assert_eq!(ffvf_f64.counters[&2.0], 2);
}
}

559
src/collector/mod.rs
View File

@@ -1,246 +1,401 @@
/*!
Defines how the documents matching a search query should be processed.
# Collectors
Collectors define the information you want to extract from the documents matching the queries.
In tantivy jargon, we call this information your search "fruit".
Your fruit could for instance be :
- [the count of matching documents](./struct.Count.html)
- [the top 10 documents, by relevancy or by a fast field](./struct.TopDocs.html)
- [facet counts](./struct.FacetCollector.html)
At one point in your code, you will trigger the actual search operation by calling
[the `search(...)` method of your `Searcher` object](../struct.Searcher.html#method.search).
This call will look like this.
```verbatim
let fruit = searcher.search(&query, &collector)?;
```
Here the type of fruit is actually determined as an associated type of the collector (`Collector::Fruit`).
# Combining several collectors
A rich search experience often requires to run several collectors on your search query.
For instance,
- selecting the top-K products matching your query
- counting the matching documents
- computing several facets
- computing statistics about the matching product prices
A simple and efficient way to do that is to pass your collectors as one tuple.
The resulting `Fruit` will then be a typed tuple with each collector's original fruits
in their respective position.
```rust
# use tantivy::schema::*;
# use tantivy::*;
# use tantivy::query::*;
use tantivy::collector::{Count, TopDocs};
#
# fn main() -> tantivy::Result<()> {
# let mut schema_builder = Schema::builder();
# let title = schema_builder.add_text_field("title", TEXT);
# let schema = schema_builder.build();
# let index = Index::create_in_ram(schema);
# let mut index_writer = index.writer(3_000_000)?;
# index_writer.add_document(doc!(
# title => "The Name of the Wind",
# ));
# index_writer.add_document(doc!(
# title => "The Diary of Muadib",
# ));
# index_writer.commit()?;
# let reader = index.reader()?;
# let searcher = reader.searcher();
# let query_parser = QueryParser::for_index(&index, vec![title]);
# let query = query_parser.parse_query("diary")?;
let (doc_count, top_docs): (usize, Vec<(Score, DocAddress)>) =
searcher.search(&query, &(Count, TopDocs::with_limit(2)))?;
# Ok(())
# }
```
The `Collector` trait is implemented for up to 4 collectors.
If you have more than 4 collectors, you can either group them into
tuples of tuples `(a,(b,(c,d)))`, or rely on [`MultiCollector`](./struct.MultiCollector.html).
# Combining several collectors dynamically
Combining collectors into a tuple is a zero-cost abstraction: everything
happens as if you had manually implemented a single collector
combining all of our features.
Unfortunately it requires you to know at compile time your collector types.
If on the other hand, the collectors depend on some query parameter,
you can rely on `MultiCollector`'s.
# Implementing your own collectors.
See the `custom_collector` example.
*/
use DocId;
use Result;
use Score;
use SegmentLocalId;
use SegmentReader;
use crate::DocId;
use crate::Score;
use crate::SegmentLocalId;
use crate::SegmentReader;
use downcast_rs::impl_downcast;
mod count_collector;
pub use self::count_collector::CountCollector;
pub use self::count_collector::Count;
mod multi_collector;
pub use self::multi_collector::MultiCollector;
mod top_collector;
pub use self::top_collector::TopCollector;
mod top_score_collector;
pub use self::top_score_collector::TopDocs;
mod custom_score_top_collector;
pub use self::custom_score_top_collector::{CustomScorer, CustomSegmentScorer};
mod tweak_score_top_collector;
pub use self::tweak_score_top_collector::{ScoreSegmentTweaker, ScoreTweaker};
mod facet_collector;
pub use self::facet_collector::FacetCollector;
use crate::query::Weight;
mod chained_collector;
pub use self::chained_collector::{chain, ChainedCollector};
/// `Fruit` is the type for the result of our collection.
/// e.g. `usize` for the `Count` collector.
pub trait Fruit: Send + downcast_rs::Downcast {}
impl<T> Fruit for T where T: Send + downcast_rs::Downcast {}
/// Collectors are in charge of collecting and retaining relevant
/// information from the document found and scored by the query.
///
///
/// For instance,
///
/// - keeping track of the top 10 best documents
/// - computing a breakdown over a fast field
/// - computing the number of documents matching the query
///
/// Queries are in charge of pushing the `DocSet` to the collector.
/// Our search index is in fact a collection of segments, so
/// a `Collector` trait is actually more of a factory to instance
/// `SegmentCollector`s for each segments.
///
/// As they work on multiple segments, they first inform
/// the collector of a change in a segment and then
/// call the `collect` method to push the document to the collector.
///
/// Temporally, our collector will receive calls
/// - `.set_segment(0, segment_reader_0)`
/// - `.collect(doc0_of_segment_0)`
/// - `.collect(...)`
/// - `.collect(last_doc_of_segment_0)`
/// - `.set_segment(1, segment_reader_1)`
/// - `.collect(doc0_of_segment_1)`
/// - `.collect(...)`
/// - `.collect(last_doc_of_segment_1)`
/// - `...`
/// - `.collect(last_doc_of_last_segment)`
/// The collection logic itself is in the `SegmentCollector`.
///
/// Segments are not guaranteed to be visited in any specific order.
pub trait Collector {
pub trait Collector: Sync + Send {
/// `Fruit` is the type for the result of our collection.
/// e.g. `usize` for the `Count` collector.
type Fruit: Fruit;
/// Type of the `SegmentCollector` associated to this collector.
type Child: SegmentCollector<Fruit = Self::Fruit>;
/// `set_segment` is called before beginning to enumerate
/// on this segment.
fn set_segment(
&mut self,
fn for_segment(
&self,
segment_local_id: SegmentLocalId,
segment: &SegmentReader,
) -> Result<()>;
/// The query pushes the scored document to the collector via this method.
fn collect(&mut self, doc: DocId, score: Score);
) -> crate::Result<Self::Child>;
/// Returns true iff the collector requires to compute scores for documents.
fn requires_scoring(&self) -> bool;
/// Combines the fruit associated to the collection of each segments
/// into one fruit.
fn merge_fruits(&self, segment_fruits: Vec<Self::Fruit>) -> crate::Result<Self::Fruit>;
/// Created a segment collector and
fn collect_segment(
&self,
weight: &dyn Weight,
segment_ord: u32,
reader: &SegmentReader,
) -> crate::Result<<Self::Child as SegmentCollector>::Fruit> {
let mut segment_collector = self.for_segment(segment_ord as u32, reader)?;
if let Some(delete_bitset) = reader.delete_bitset() {
weight.for_each(reader, &mut |doc, score| {
if delete_bitset.is_alive(doc) {
segment_collector.collect(doc, score);
}
})?;
} else {
weight.for_each(reader, &mut |doc, score| {
segment_collector.collect(doc, score);
})?;
}
Ok(segment_collector.harvest())
}
}
impl<'a, C: Collector> Collector for &'a mut C {
fn set_segment(
&mut self,
segment_local_id: SegmentLocalId,
segment: &SegmentReader,
) -> Result<()> {
(*self).set_segment(segment_local_id, segment)
}
/// The `SegmentCollector` is the trait in charge of defining the
/// collect operation at the scale of the segment.
///
/// `.collect(doc, score)` will be called for every documents
/// matching the query.
pub trait SegmentCollector: 'static {
/// `Fruit` is the type for the result of our collection.
/// e.g. `usize` for the `Count` collector.
type Fruit: Fruit;
/// The query pushes the scored document to the collector via this method.
fn collect(&mut self, doc: DocId, score: Score) {
C::collect(self, doc, score)
fn collect(&mut self, doc: DocId, score: Score);
/// Extract the fruit of the collection from the `SegmentCollector`.
fn harvest(self) -> Self::Fruit;
}
// -----------------------------------------------
// Tuple implementations.
impl<Left, Right> Collector for (Left, Right)
where
Left: Collector,
Right: Collector,
{
type Fruit = (Left::Fruit, Right::Fruit);
type Child = (Left::Child, Right::Child);
fn for_segment(
&self,
segment_local_id: u32,
segment: &SegmentReader,
) -> crate::Result<Self::Child> {
let left = self.0.for_segment(segment_local_id, segment)?;
let right = self.1.for_segment(segment_local_id, segment)?;
Ok((left, right))
}
fn requires_scoring(&self) -> bool {
C::requires_scoring(self)
self.0.requires_scoring() || self.1.requires_scoring()
}
fn merge_fruits(
&self,
children: Vec<(Left::Fruit, Right::Fruit)>,
) -> crate::Result<(Left::Fruit, Right::Fruit)> {
let mut left_fruits = vec![];
let mut right_fruits = vec![];
for (left_fruit, right_fruit) in children {
left_fruits.push(left_fruit);
right_fruits.push(right_fruit);
}
Ok((
self.0.merge_fruits(left_fruits)?,
self.1.merge_fruits(right_fruits)?,
))
}
}
impl<Left, Right> SegmentCollector for (Left, Right)
where
Left: SegmentCollector,
Right: SegmentCollector,
{
type Fruit = (Left::Fruit, Right::Fruit);
fn collect(&mut self, doc: DocId, score: Score) {
self.0.collect(doc, score);
self.1.collect(doc, score);
}
fn harvest(self) -> <Self as SegmentCollector>::Fruit {
(self.0.harvest(), self.1.harvest())
}
}
// 3-Tuple
impl<One, Two, Three> Collector for (One, Two, Three)
where
One: Collector,
Two: Collector,
Three: Collector,
{
type Fruit = (One::Fruit, Two::Fruit, Three::Fruit);
type Child = (One::Child, Two::Child, Three::Child);
fn for_segment(
&self,
segment_local_id: u32,
segment: &SegmentReader,
) -> crate::Result<Self::Child> {
let one = self.0.for_segment(segment_local_id, segment)?;
let two = self.1.for_segment(segment_local_id, segment)?;
let three = self.2.for_segment(segment_local_id, segment)?;
Ok((one, two, three))
}
fn requires_scoring(&self) -> bool {
self.0.requires_scoring() || self.1.requires_scoring() || self.2.requires_scoring()
}
fn merge_fruits(&self, children: Vec<Self::Fruit>) -> crate::Result<Self::Fruit> {
let mut one_fruits = vec![];
let mut two_fruits = vec![];
let mut three_fruits = vec![];
for (one_fruit, two_fruit, three_fruit) in children {
one_fruits.push(one_fruit);
two_fruits.push(two_fruit);
three_fruits.push(three_fruit);
}
Ok((
self.0.merge_fruits(one_fruits)?,
self.1.merge_fruits(two_fruits)?,
self.2.merge_fruits(three_fruits)?,
))
}
}
impl<One, Two, Three> SegmentCollector for (One, Two, Three)
where
One: SegmentCollector,
Two: SegmentCollector,
Three: SegmentCollector,
{
type Fruit = (One::Fruit, Two::Fruit, Three::Fruit);
fn collect(&mut self, doc: DocId, score: Score) {
self.0.collect(doc, score);
self.1.collect(doc, score);
self.2.collect(doc, score);
}
fn harvest(self) -> <Self as SegmentCollector>::Fruit {
(self.0.harvest(), self.1.harvest(), self.2.harvest())
}
}
// 4-Tuple
impl<One, Two, Three, Four> Collector for (One, Two, Three, Four)
where
One: Collector,
Two: Collector,
Three: Collector,
Four: Collector,
{
type Fruit = (One::Fruit, Two::Fruit, Three::Fruit, Four::Fruit);
type Child = (One::Child, Two::Child, Three::Child, Four::Child);
fn for_segment(
&self,
segment_local_id: u32,
segment: &SegmentReader,
) -> crate::Result<Self::Child> {
let one = self.0.for_segment(segment_local_id, segment)?;
let two = self.1.for_segment(segment_local_id, segment)?;
let three = self.2.for_segment(segment_local_id, segment)?;
let four = self.3.for_segment(segment_local_id, segment)?;
Ok((one, two, three, four))
}
fn requires_scoring(&self) -> bool {
self.0.requires_scoring()
|| self.1.requires_scoring()
|| self.2.requires_scoring()
|| self.3.requires_scoring()
}
fn merge_fruits(&self, children: Vec<Self::Fruit>) -> crate::Result<Self::Fruit> {
let mut one_fruits = vec![];
let mut two_fruits = vec![];
let mut three_fruits = vec![];
let mut four_fruits = vec![];
for (one_fruit, two_fruit, three_fruit, four_fruit) in children {
one_fruits.push(one_fruit);
two_fruits.push(two_fruit);
three_fruits.push(three_fruit);
four_fruits.push(four_fruit);
}
Ok((
self.0.merge_fruits(one_fruits)?,
self.1.merge_fruits(two_fruits)?,
self.2.merge_fruits(three_fruits)?,
self.3.merge_fruits(four_fruits)?,
))
}
}
impl<One, Two, Three, Four> SegmentCollector for (One, Two, Three, Four)
where
One: SegmentCollector,
Two: SegmentCollector,
Three: SegmentCollector,
Four: SegmentCollector,
{
type Fruit = (One::Fruit, Two::Fruit, Three::Fruit, Four::Fruit);
fn collect(&mut self, doc: DocId, score: Score) {
self.0.collect(doc, score);
self.1.collect(doc, score);
self.2.collect(doc, score);
self.3.collect(doc, score);
}
fn harvest(self) -> <Self as SegmentCollector>::Fruit {
(
self.0.harvest(),
self.1.harvest(),
self.2.harvest(),
self.3.harvest(),
)
}
}
impl_downcast!(Fruit);
#[cfg(test)]
pub mod tests {
use super::*;
use core::SegmentReader;
use fastfield::BytesFastFieldReader;
use fastfield::FastFieldReader;
use schema::Field;
use DocId;
use Score;
use SegmentLocalId;
/// Stores all of the doc ids.
/// This collector is only used for tests.
/// It is unusable in practise, as it does not store
/// the segment ordinals
pub struct TestCollector {
offset: DocId,
segment_max_doc: DocId,
docs: Vec<DocId>,
scores: Vec<Score>,
}
impl TestCollector {
/// Return the exhalist of documents.
pub fn docs(self) -> Vec<DocId> {
self.docs
}
pub fn scores(self) -> Vec<Score> {
self.scores
}
}
impl Default for TestCollector {
fn default() -> TestCollector {
TestCollector {
offset: 0,
segment_max_doc: 0,
docs: Vec::new(),
scores: Vec::new(),
}
}
}
impl Collector for TestCollector {
fn set_segment(&mut self, _: SegmentLocalId, reader: &SegmentReader) -> Result<()> {
self.offset += self.segment_max_doc;
self.segment_max_doc = reader.max_doc();
Ok(())
}
fn collect(&mut self, doc: DocId, score: Score) {
self.docs.push(doc + self.offset);
self.scores.push(score);
}
fn requires_scoring(&self) -> bool {
true
}
}
/// Collects in order all of the fast fields for all of the
/// doc in the `DocSet`
///
/// This collector is mainly useful for tests.
pub struct FastFieldTestCollector {
vals: Vec<u64>,
field: Field,
ff_reader: Option<FastFieldReader<u64>>,
}
impl FastFieldTestCollector {
pub fn for_field(field: Field) -> FastFieldTestCollector {
FastFieldTestCollector {
vals: Vec::new(),
field,
ff_reader: None,
}
}
pub fn vals(self) -> Vec<u64> {
self.vals
}
}
impl Collector for FastFieldTestCollector {
fn set_segment(&mut self, _: SegmentLocalId, reader: &SegmentReader) -> Result<()> {
self.ff_reader = Some(reader.fast_field_reader(self.field)?);
Ok(())
}
fn collect(&mut self, doc: DocId, _score: Score) {
let val = self.ff_reader.as_ref().unwrap().get(doc);
self.vals.push(val);
}
fn requires_scoring(&self) -> bool {
false
}
}
/// Collects in order all of the fast field bytes for all of the
/// docs in the `DocSet`
///
/// This collector is mainly useful for tests.
pub struct BytesFastFieldTestCollector {
vals: Vec<u8>,
field: Field,
ff_reader: Option<BytesFastFieldReader>,
}
impl BytesFastFieldTestCollector {
pub fn for_field(field: Field) -> BytesFastFieldTestCollector {
BytesFastFieldTestCollector {
vals: Vec::new(),
field,
ff_reader: None,
}
}
pub fn vals(self) -> Vec<u8> {
self.vals
}
}
impl Collector for BytesFastFieldTestCollector {
fn set_segment(&mut self, _segment_local_id: u32, segment: &SegmentReader) -> Result<()> {
self.ff_reader = Some(segment.bytes_fast_field_reader(self.field)?);
Ok(())
}
fn collect(&mut self, doc: u32, _score: f32) {
let val = self.ff_reader.as_ref().unwrap().get_val(doc);
self.vals.extend(val);
}
fn requires_scoring(&self) -> bool {
false
}
}
}
#[cfg(all(test, feature = "unstable"))]
mod bench {
use collector::{Collector, CountCollector};
use test::Bencher;
#[bench]
fn build_collector(b: &mut Bencher) {
b.iter(|| {
let mut count_collector = CountCollector::default();
let docs: Vec<u32> = (0..1_000_000).collect();
for doc in docs {
count_collector.collect(doc, 1f32);
}
count_collector.count()
});
}
}
pub mod tests;

319
src/collector/multi_collector.rs
View File

@@ -1,98 +1,242 @@
use super::Collector;
use DocId;
use Result;
use Score;
use SegmentLocalId;
use SegmentReader;
use super::SegmentCollector;
use crate::collector::Fruit;
use crate::DocId;
use crate::Score;
use crate::SegmentLocalId;
use crate::SegmentReader;
use crate::TantivyError;
use std::marker::PhantomData;
use std::ops::Deref;
pub struct MultiFruit {
sub_fruits: Vec<Option<Box<dyn Fruit>>>,
}
pub struct CollectorWrapper<TCollector: Collector>(TCollector);
impl<TCollector: Collector> Collector for CollectorWrapper<TCollector> {
type Fruit = Box<dyn Fruit>;
type Child = Box<dyn BoxableSegmentCollector>;
fn for_segment(
&self,
segment_local_id: u32,
reader: &SegmentReader,
) -> crate::Result<Box<dyn BoxableSegmentCollector>> {
let child = self.0.for_segment(segment_local_id, reader)?;
Ok(Box::new(SegmentCollectorWrapper(child)))
}
fn requires_scoring(&self) -> bool {
self.0.requires_scoring()
}
fn merge_fruits(
&self,
children: Vec<<Self as Collector>::Fruit>,
) -> crate::Result<Box<dyn Fruit>> {
let typed_fruit: Vec<TCollector::Fruit> = children
.into_iter()
.map(|untyped_fruit| {
untyped_fruit
.downcast::<TCollector::Fruit>()
.map(|boxed_but_typed| *boxed_but_typed)
.map_err(|_| {
TantivyError::InvalidArgument("Failed to cast child fruit.".to_string())
})
})
.collect::<crate::Result<_>>()?;
let merged_fruit = self.0.merge_fruits(typed_fruit)?;
Ok(Box::new(merged_fruit))
}
}
impl SegmentCollector for Box<dyn BoxableSegmentCollector> {
type Fruit = Box<dyn Fruit>;
fn collect(&mut self, doc: u32, score: Score) {
self.as_mut().collect(doc, score);
}
fn harvest(self) -> Box<dyn Fruit> {
BoxableSegmentCollector::harvest_from_box(self)
}
}
pub trait BoxableSegmentCollector {
fn collect(&mut self, doc: u32, score: Score);
fn harvest_from_box(self: Box<Self>) -> Box<dyn Fruit>;
}
pub struct SegmentCollectorWrapper<TSegmentCollector: SegmentCollector>(TSegmentCollector);
impl<TSegmentCollector: SegmentCollector> BoxableSegmentCollector
for SegmentCollectorWrapper<TSegmentCollector>
{
fn collect(&mut self, doc: u32, score: Score) {
self.0.collect(doc, score);
}
fn harvest_from_box(self: Box<Self>) -> Box<dyn Fruit> {
Box::new(self.0.harvest())
}
}
pub struct FruitHandle<TFruit: Fruit> {
pos: usize,
_phantom: PhantomData<TFruit>,
}
impl<TFruit: Fruit> FruitHandle<TFruit> {
pub fn extract(self, fruits: &mut MultiFruit) -> TFruit {
let boxed_fruit = fruits.sub_fruits[self.pos].take().expect("");
*boxed_fruit
.downcast::<TFruit>()
.map_err(|_| ())
.expect("Failed to downcast collector fruit.")
}
}
/// Multicollector makes it possible to collect on more than one collector.
/// It should only be used for use cases where the Collector types is unknown
/// at compile time.
/// If the type of the collectors is known, you should prefer to use `ChainedCollector`.
///
/// If the type of the collectors is known, you can just group yours collectors
/// in a tuple. See the
/// [Combining several collectors section of the collector documentation](./index.html#combining-several-collectors).
///
/// ```rust
/// #[macro_use]
/// extern crate tantivy;
/// use tantivy::schema::{SchemaBuilder, TEXT};
/// use tantivy::{Index, Result};
/// use tantivy::collector::{CountCollector, TopCollector, MultiCollector};
/// use tantivy::collector::{Count, TopDocs, MultiCollector};
/// use tantivy::query::QueryParser;
/// use tantivy::schema::{Schema, TEXT};
/// use tantivy::{doc, Index};
///
/// # fn main() { example().unwrap(); }
/// fn example() -> Result<()> {
/// let mut schema_builder = SchemaBuilder::new();
/// let title = schema_builder.add_text_field("title", TEXT);
/// let schema = schema_builder.build();
/// let index = Index::create_in_ram(schema);
/// {
/// let mut index_writer = index.writer(3_000_000)?;
/// index_writer.add_document(doc!(
/// title => "The Name of the Wind",
/// ));
/// index_writer.add_document(doc!(
/// title => "The Diary of Muadib",
/// ));
/// index_writer.add_document(doc!(
/// title => "A Dairy Cow",
/// ));
/// index_writer.add_document(doc!(
/// title => "The Diary of a Young Girl",
/// ));
/// index_writer.commit().unwrap();
/// }
/// let mut schema_builder = Schema::builder();
/// let title = schema_builder.add_text_field("title", TEXT);
/// let schema = schema_builder.build();
/// let index = Index::create_in_ram(schema);
///
/// index.load_searchers()?;
/// let searcher = index.searcher();
/// let mut index_writer = index.writer(3_000_000).unwrap();
/// index_writer.add_document(doc!(title => "The Name of the Wind"));
/// index_writer.add_document(doc!(title => "The Diary of Muadib"));
/// index_writer.add_document(doc!(title => "A Dairy Cow"));
/// index_writer.add_document(doc!(title => "The Diary of a Young Girl"));
/// assert!(index_writer.commit().is_ok());
///
/// {
/// let mut top_collector = TopCollector::with_limit(2);
/// let mut count_collector = CountCollector::default();
/// {
/// let mut collectors =
/// MultiCollector::from(vec![&mut top_collector, &mut count_collector]);
/// let query_parser = QueryParser::for_index(&index, vec![title]);
/// let query = query_parser.parse_query("diary")?;
/// searcher.search(&*query, &mut collectors).unwrap();
/// }
/// assert_eq!(count_collector.count(), 2);
/// assert!(top_collector.at_capacity());
/// }
/// let reader = index.reader().unwrap();
/// let searcher = reader.searcher();
///
/// Ok(())
/// }
/// let mut collectors = MultiCollector::new();
/// let top_docs_handle = collectors.add_collector(TopDocs::with_limit(2));
/// let count_handle = collectors.add_collector(Count);
/// let query_parser = QueryParser::for_index(&index, vec![title]);
/// let query = query_parser.parse_query("diary").unwrap();
/// let mut multi_fruit = searcher.search(&query, &collectors).unwrap();
///
/// let count = count_handle.extract(&mut multi_fruit);
/// let top_docs = top_docs_handle.extract(&mut multi_fruit);
///
/// assert_eq!(count, 2);
/// assert_eq!(top_docs.len(), 2);
/// ```
#[allow(clippy::type_complexity)]
#[derive(Default)]
pub struct MultiCollector<'a> {
collectors: Vec<&'a mut Collector>,
collector_wrappers: Vec<
Box<dyn Collector<Child = Box<dyn BoxableSegmentCollector>, Fruit = Box<dyn Fruit>> + 'a>,
>,
}
impl<'a> MultiCollector<'a> {
/// Constructor
pub fn from(collectors: Vec<&'a mut Collector>) -> MultiCollector {
MultiCollector { collectors }
/// Create a new `MultiCollector`
pub fn new() -> Self {
Default::default()
}
/// Add a new collector to our `MultiCollector`.
pub fn add_collector<'b: 'a, TCollector: Collector + 'b>(
&mut self,
collector: TCollector,
) -> FruitHandle<TCollector::Fruit> {
let pos = self.collector_wrappers.len();
self.collector_wrappers
.push(Box::new(CollectorWrapper(collector)));
FruitHandle {
pos,
_phantom: PhantomData,
}
}
}
impl<'a> Collector for MultiCollector<'a> {
fn set_segment(
&mut self,
type Fruit = MultiFruit;
type Child = MultiCollectorChild;
fn for_segment(
&self,
segment_local_id: SegmentLocalId,
segment: &SegmentReader,
) -> Result<()> {
for collector in &mut self.collectors {
collector.set_segment(segment_local_id, segment)?;
}
Ok(())
) -> crate::Result<MultiCollectorChild> {
let children = self
.collector_wrappers
.iter()
.map(|collector_wrapper| collector_wrapper.for_segment(segment_local_id, segment))
.collect::<crate::Result<Vec<_>>>()?;
Ok(MultiCollectorChild { children })
}
fn requires_scoring(&self) -> bool {
self.collector_wrappers
.iter()
.map(Deref::deref)
.any(Collector::requires_scoring)
}
fn merge_fruits(&self, segments_multifruits: Vec<MultiFruit>) -> crate::Result<MultiFruit> {
let mut segment_fruits_list: Vec<Vec<Box<dyn Fruit>>> = (0..self.collector_wrappers.len())
.map(|_| Vec::with_capacity(segments_multifruits.len()))
.collect::<Vec<_>>();
for segment_multifruit in segments_multifruits {
for (idx, segment_fruit_opt) in segment_multifruit.sub_fruits.into_iter().enumerate() {
if let Some(segment_fruit) = segment_fruit_opt {
segment_fruits_list[idx].push(segment_fruit);
}
}
}
let sub_fruits = self
.collector_wrappers
.iter()
.zip(segment_fruits_list)
.map(|(child_collector, segment_fruits)| {
Ok(Some(child_collector.merge_fruits(segment_fruits)?))
})
.collect::<crate::Result<_>>()?;
Ok(MultiFruit { sub_fruits })
}
}
pub struct MultiCollectorChild {
children: Vec<Box<dyn BoxableSegmentCollector>>,
}
impl SegmentCollector for MultiCollectorChild {
type Fruit = MultiFruit;
fn collect(&mut self, doc: DocId, score: Score) {
for collector in &mut self.collectors {
collector.collect(doc, score);
for child in &mut self.children {
child.collect(doc, score);
}
}
fn requires_scoring(&self) -> bool {
self.collectors
.iter()
.any(|collector| collector.requires_scoring())
fn harvest(self) -> MultiFruit {
MultiFruit {
sub_fruits: self
.children
.into_iter()
.map(|child| Some(child.harvest()))
.collect(),
}
}
}
@@ -100,20 +244,41 @@ impl<'a> Collector for MultiCollector<'a> {
mod tests {
use super::*;
use collector::{Collector, CountCollector, TopCollector};
use crate::collector::{Count, TopDocs};
use crate::query::TermQuery;
use crate::schema::IndexRecordOption;
use crate::schema::{Schema, TEXT};
use crate::Index;
use crate::Term;
#[test]
fn test_multi_collector() {
let mut top_collector = TopCollector::with_limit(2);
let mut count_collector = CountCollector::default();
let mut schema_builder = Schema::builder();
let text = schema_builder.add_text_field("text", TEXT);
let schema = schema_builder.build();
let index = Index::create_in_ram(schema);
{
let mut collectors =
MultiCollector::from(vec![&mut top_collector, &mut count_collector]);
collectors.collect(1, 0.2);
collectors.collect(2, 0.1);
collectors.collect(3, 0.5);
let mut index_writer = index.writer_with_num_threads(1, 3_000_000).unwrap();
index_writer.add_document(doc!(text=>"abc"));
index_writer.add_document(doc!(text=>"abc abc abc"));
index_writer.add_document(doc!(text=>"abc abc"));
index_writer.commit().unwrap();
index_writer.add_document(doc!(text=>""));
index_writer.add_document(doc!(text=>"abc abc abc abc"));
index_writer.add_document(doc!(text=>"abc"));
index_writer.commit().unwrap();
}
assert_eq!(count_collector.count(), 3);
assert!(top_collector.at_capacity());
let searcher = index.reader().unwrap().searcher();
let term = Term::from_field_text(text, "abc");
let query = TermQuery::new(term, IndexRecordOption::Basic);
let mut collectors = MultiCollector::new();
let topdocs_handler = collectors.add_collector(TopDocs::with_limit(2));
let count_handler = collectors.add_collector(Count);
let mut multifruits = searcher.search(&query, &mut collectors).unwrap();
assert_eq!(count_handler.extract(&mut multifruits), 5);
assert_eq!(topdocs_handler.extract(&mut multifruits).len(), 2);
}
}

217
src/collector/tests.rs Normal file
View File

@@ -0,0 +1,217 @@
use super::*;
use crate::core::SegmentReader;
use crate::fastfield::BytesFastFieldReader;
use crate::fastfield::FastFieldReader;
use crate::schema::Field;
use crate::DocAddress;
use crate::DocId;
use crate::Score;
use crate::SegmentLocalId;
pub const TEST_COLLECTOR_WITH_SCORE: TestCollector = TestCollector {
compute_score: true,
};
pub const TEST_COLLECTOR_WITHOUT_SCORE: TestCollector = TestCollector {
compute_score: true,
};
/// Stores all of the doc ids.
/// This collector is only used for tests.
/// It is unusable in pr
///
/// actise, as it does not store
/// the segment ordinals
pub struct TestCollector {
pub compute_score: bool,
}
pub struct TestSegmentCollector {
segment_id: SegmentLocalId,
fruit: TestFruit,
}
#[derive(Default)]
pub struct TestFruit {
docs: Vec<DocAddress>,
scores: Vec<Score>,
}
impl TestFruit {
/// Return the list of matching documents exhaustively.
pub fn docs(&self) -> &[DocAddress] {
&self.docs[..]
}
pub fn scores(&self) -> &[Score] {
&self.scores[..]
}
}
impl Collector for TestCollector {
type Fruit = TestFruit;
type Child = TestSegmentCollector;
fn for_segment(
&self,
segment_id: SegmentLocalId,
_reader: &SegmentReader,
) -> crate::Result<TestSegmentCollector> {
Ok(TestSegmentCollector {
segment_id,
fruit: TestFruit::default(),
})
}
fn requires_scoring(&self) -> bool {
self.compute_score
}
fn merge_fruits(&self, mut children: Vec<TestFruit>) -> crate::Result<TestFruit> {
children.sort_by_key(|fruit| {
if fruit.docs().is_empty() {
0
} else {
fruit.docs()[0].segment_ord()
}
});
let mut docs = vec![];
let mut scores = vec![];
for child in children {
docs.extend(child.docs());
scores.extend(child.scores);
}
Ok(TestFruit { docs, scores })
}
}
impl SegmentCollector for TestSegmentCollector {
type Fruit = TestFruit;
fn collect(&mut self, doc: DocId, score: Score) {
self.fruit.docs.push(DocAddress(self.segment_id, doc));
self.fruit.scores.push(score);
}
fn harvest(self) -> <Self as SegmentCollector>::Fruit {
self.fruit
}
}
/// Collects in order all of the fast fields for all of the
/// doc in the `DocSet`
///
/// This collector is mainly useful for tests.
pub struct FastFieldTestCollector {
field: Field,
}
pub struct FastFieldSegmentCollector {
vals: Vec<u64>,
reader: FastFieldReader<u64>,
}
impl FastFieldTestCollector {
pub fn for_field(field: Field) -> FastFieldTestCollector {
FastFieldTestCollector { field }
}
}
impl Collector for FastFieldTestCollector {
type Fruit = Vec<u64>;
type Child = FastFieldSegmentCollector;
fn for_segment(
&self,
_: SegmentLocalId,
segment_reader: &SegmentReader,
) -> crate::Result<FastFieldSegmentCollector> {
let reader = segment_reader
.fast_fields()
.u64(self.field)
.expect("Requested field is not a fast field.");
Ok(FastFieldSegmentCollector {
vals: Vec::new(),
reader,
})
}
fn requires_scoring(&self) -> bool {
false
}
fn merge_fruits(&self, children: Vec<Vec<u64>>) -> crate::Result<Vec<u64>> {
Ok(children.into_iter().flat_map(|v| v.into_iter()).collect())
}
}
impl SegmentCollector for FastFieldSegmentCollector {
type Fruit = Vec<u64>;
fn collect(&mut self, doc: DocId, _score: Score) {
let val = self.reader.get(doc);
self.vals.push(val);
}
fn harvest(self) -> Vec<u64> {
self.vals
}
}
/// Collects in order all of the fast field bytes for all of the
/// docs in the `DocSet`
///
/// This collector is mainly useful for tests.
pub struct BytesFastFieldTestCollector {
field: Field,
}
pub struct BytesFastFieldSegmentCollector {
vals: Vec<u8>,
reader: BytesFastFieldReader,
}
impl BytesFastFieldTestCollector {
pub fn for_field(field: Field) -> BytesFastFieldTestCollector {
BytesFastFieldTestCollector { field }
}
}
impl Collector for BytesFastFieldTestCollector {
type Fruit = Vec<u8>;
type Child = BytesFastFieldSegmentCollector;
fn for_segment(
&self,
_segment_local_id: u32,
segment_reader: &SegmentReader,
) -> crate::Result<BytesFastFieldSegmentCollector> {
Ok(BytesFastFieldSegmentCollector {
vals: Vec::new(),
reader: segment_reader
.fast_fields()
.bytes(self.field)
.expect("Field is not a bytes fast field."),
})
}
fn requires_scoring(&self) -> bool {
false
}
fn merge_fruits(&self, children: Vec<Vec<u8>>) -> crate::Result<Vec<u8>> {
Ok(children.into_iter().flat_map(|c| c.into_iter()).collect())
}
}
impl SegmentCollector for BytesFastFieldSegmentCollector {
type Fruit = Vec<u8>;
fn collect(&mut self, doc: u32, _score: Score) {
let data = self.reader.get_bytes(doc);
self.vals.extend(data);
}
fn harvest(self) -> <Self as SegmentCollector>::Fruit {
self.vals
}
}

479
src/collector/top_collector.rs
View File

@@ -1,244 +1,383 @@
use super::Collector;
use crate::DocAddress;
use crate::DocId;
use crate::SegmentLocalId;
use crate::SegmentReader;
use serde::export::PhantomData;
use std::cmp::Ordering;
use std::collections::BinaryHeap;
use DocAddress;
use DocId;
use Result;
use Score;
use SegmentLocalId;
use SegmentReader;
// Rust heap is a max-heap and we need a min heap.
#[derive(Clone, Copy)]
struct GlobalScoredDoc {
score: Score,
doc_address: DocAddress,
/// Contains a feature (field, score, etc.) of a document along with the document address.
///
/// It has a custom implementation of `PartialOrd` that reverses the order. This is because the
/// default Rust heap is a max heap, whereas a min heap is needed.
///
/// Additionally, it guarantees stable sorting: in case of a tie on the feature, the document
/// address is used.
///
/// WARNING: equality is not what you would expect here.
/// Two elements are equal if their feature is equal, and regardless of whether `doc`
/// is equal. This should be perfectly fine for this usage, but let's make sure this
/// struct is never public.
pub(crate) struct ComparableDoc<T, D> {
pub feature: T,
pub doc: D,
}
impl PartialOrd for GlobalScoredDoc {
fn partial_cmp(&self, other: &GlobalScoredDoc) -> Option<Ordering> {
impl<T: PartialOrd, D: PartialOrd> PartialOrd for ComparableDoc<T, D> {
fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
Some(self.cmp(other))
}
}
impl Ord for GlobalScoredDoc {
impl<T: PartialOrd, D: PartialOrd> Ord for ComparableDoc<T, D> {
#[inline]
fn cmp(&self, other: &GlobalScoredDoc) -> Ordering {
other
.score
.partial_cmp(&self.score)
.unwrap_or_else(|| other.doc_address.cmp(&self.doc_address))
fn cmp(&self, other: &Self) -> Ordering {
// Reversed to make BinaryHeap work as a min-heap
let by_feature = other
.feature
.partial_cmp(&self.feature)
.unwrap_or(Ordering::Equal);
let lazy_by_doc_address = || self.doc.partial_cmp(&other.doc).unwrap_or(Ordering::Equal);
// In case of a tie on the feature, we sort by ascending
// `DocAddress` in order to ensure a stable sorting of the
// documents.
by_feature.then_with(lazy_by_doc_address)
}
}
impl PartialEq for GlobalScoredDoc {
fn eq(&self, other: &GlobalScoredDoc) -> bool {
impl<T: PartialOrd, D: PartialOrd> PartialEq for ComparableDoc<T, D> {
fn eq(&self, other: &Self) -> bool {
self.cmp(other) == Ordering::Equal
}
}
impl Eq for GlobalScoredDoc {}
impl<T: PartialOrd, D: PartialOrd> Eq for ComparableDoc<T, D> {}
/// The Top Collector keeps track of the K documents
/// with the best scores.
///
/// The implementation is based on a `BinaryHeap`.
/// The theorical complexity for collecting the top `K` out of `n` documents
/// is `O(n log K)`.
///
/// ```rust
/// #[macro_use]
/// extern crate tantivy;
/// use tantivy::schema::{SchemaBuilder, TEXT};
/// use tantivy::{Index, Result, DocId, Score};
/// use tantivy::collector::TopCollector;
/// use tantivy::query::QueryParser;
///
/// # fn main() { example().unwrap(); }
/// fn example() -> Result<()> {
/// let mut schema_builder = SchemaBuilder::new();
/// let title = schema_builder.add_text_field("title", TEXT);
/// let schema = schema_builder.build();
/// let index = Index::create_in_ram(schema);
/// {
/// let mut index_writer = index.writer_with_num_threads(1, 3_000_000)?;
/// index_writer.add_document(doc!(
/// title => "The Name of the Wind",
/// ));
/// index_writer.add_document(doc!(
/// title => "The Diary of Muadib",
/// ));
/// index_writer.add_document(doc!(
/// title => "A Dairy Cow",
/// ));
/// index_writer.add_document(doc!(
/// title => "The Diary of a Young Girl",
/// ));
/// index_writer.commit().unwrap();
/// }
///
/// index.load_searchers()?;
/// let searcher = index.searcher();
///
/// {
/// let mut top_collector = TopCollector::with_limit(2);
/// let query_parser = QueryParser::for_index(&index, vec![title]);
/// let query = query_parser.parse_query("diary")?;
/// searcher.search(&*query, &mut top_collector).unwrap();
///
/// let score_docs: Vec<(Score, DocId)> = top_collector
/// .score_docs()
/// .into_iter()
/// .map(|(score, doc_address)| (score, doc_address.doc()))
/// .collect();
///
/// assert_eq!(score_docs, vec![(0.7261542, 1), (0.6099695, 3)]);
/// }
///
/// Ok(())
/// }
/// ```
pub struct TopCollector {
limit: usize,
heap: BinaryHeap<GlobalScoredDoc>,
segment_id: u32,
pub(crate) struct TopCollector<T> {
pub limit: usize,
pub offset: usize,
_marker: PhantomData<T>,
}
impl TopCollector {
impl<T> TopCollector<T>
where
T: PartialOrd + Clone,
{
/// Creates a top collector, with a number of documents equal to "limit".
///
/// # Panics
/// The method panics if limit is 0
pub fn with_limit(limit: usize) -> TopCollector {
pub fn with_limit(limit: usize) -> TopCollector<T> {
if limit < 1 {
panic!("Limit must be strictly greater than 0.");
}
TopCollector {
Self {
limit,
heap: BinaryHeap::with_capacity(limit),
segment_id: 0,
offset: 0,
_marker: PhantomData,
}
}
/// Returns K best documents sorted in decreasing order.
/// Skip the first "offset" documents when collecting.
///
/// Calling this method triggers the sort.
/// The result of the sort is not cached.
pub fn docs(&self) -> Vec<DocAddress> {
self.score_docs()
.into_iter()
.map(|score_doc| score_doc.1)
.collect()
/// This is equivalent to `OFFSET` in MySQL or PostgreSQL and `start` in
/// Lucene's TopDocsCollector.
pub fn and_offset(mut self, offset: usize) -> TopCollector<T> {
self.offset = offset;
self
}
/// Returns K best ScoredDocument sorted in decreasing order.
///
/// Calling this method triggers the sort.
/// The result of the sort is not cached.
pub fn score_docs(&self) -> Vec<(Score, DocAddress)> {
let mut scored_docs: Vec<GlobalScoredDoc> = self.heap.iter().cloned().collect();
scored_docs.sort();
scored_docs
pub fn merge_fruits(
&self,
children: Vec<Vec<(T, DocAddress)>>,
) -> crate::Result<Vec<(T, DocAddress)>> {
if self.limit == 0 {
return Ok(Vec::new());
}
let mut top_collector = BinaryHeap::new();
for child_fruit in children {
for (feature, doc) in child_fruit {
if top_collector.len() < (self.limit + self.offset) {
top_collector.push(ComparableDoc { feature, doc });
} else if let Some(mut head) = top_collector.peek_mut() {
if head.feature < feature {
*head = ComparableDoc { feature, doc };
}
}
}
}
Ok(top_collector
.into_sorted_vec()
.into_iter()
.map(|GlobalScoredDoc { score, doc_address }| (score, doc_address))
.skip(self.offset)
.map(|cdoc| (cdoc.feature, cdoc.doc))
.collect())
}
pub(crate) fn for_segment<F: PartialOrd>(
&self,
segment_id: SegmentLocalId,
_: &SegmentReader,
) -> crate::Result<TopSegmentCollector<F>> {
Ok(TopSegmentCollector::new(
segment_id,
self.limit + self.offset,
))
}
/// Create a new TopCollector with the same limit and offset.
///
/// Ideally we would use Into but the blanket implementation seems to cause the Scorer traits
/// to fail.
#[doc(hidden)]
pub(crate) fn into_tscore<TScore: PartialOrd + Clone>(self) -> TopCollector<TScore> {
TopCollector {
limit: self.limit,
offset: self.offset,
_marker: PhantomData,
}
}
}
/// The Top Collector keeps track of the K documents
/// sorted by type `T`.
///
/// The implementation is based on a `BinaryHeap`.
/// The theorical complexity for collecting the top `K` out of `n` documents
/// is `O(n log K)`.
pub(crate) struct TopSegmentCollector<T> {
limit: usize,
heap: BinaryHeap<ComparableDoc<T, DocId>>,
segment_id: u32,
}
impl<T: PartialOrd> TopSegmentCollector<T> {
fn new(segment_id: SegmentLocalId, limit: usize) -> TopSegmentCollector<T> {
TopSegmentCollector {
limit,
heap: BinaryHeap::with_capacity(limit),
segment_id,
}
}
}
impl<T: PartialOrd + Clone> TopSegmentCollector<T> {
pub fn harvest(self) -> Vec<(T, DocAddress)> {
let segment_id = self.segment_id;
self.heap
.into_sorted_vec()
.into_iter()
.map(|comparable_doc| {
(
comparable_doc.feature,
DocAddress(segment_id, comparable_doc.doc),
)
})
.collect()
}
/// Return true iff at least K documents have gone through
/// the collector.
#[inline]
pub fn at_capacity(&self) -> bool {
#[inline(always)]
pub(crate) fn at_capacity(&self) -> bool {
self.heap.len() >= self.limit
}
}
impl Collector for TopCollector {
fn set_segment(&mut self, segment_id: SegmentLocalId, _: &SegmentReader) -> Result<()> {
self.segment_id = segment_id;
Ok(())
}
fn collect(&mut self, doc: DocId, score: Score) {
/// Collects a document scored by the given feature
///
/// It collects documents until it has reached the max capacity. Once it reaches capacity, it
/// will compare the lowest scoring item with the given one and keep whichever is greater.
#[inline(always)]
pub fn collect(&mut self, doc: DocId, feature: T) {
if self.at_capacity() {
// It's ok to unwrap as long as a limit of 0 is forbidden.
let limit_doc: GlobalScoredDoc = *self.heap
.peek()
.expect("Top collector with size 0 is forbidden");
if limit_doc.score < score {
let mut mut_head = self.heap
.peek_mut()
.expect("Top collector with size 0 is forbidden");
mut_head.score = score;
mut_head.doc_address = DocAddress(self.segment_id, doc);
if let Some(limit_feature) = self.heap.peek().map(|head| head.feature.clone()) {
if limit_feature < feature {
if let Some(mut head) = self.heap.peek_mut() {
head.feature = feature;
head.doc = doc;
}
}
}
} else {
let wrapped_doc = GlobalScoredDoc {
score,
doc_address: DocAddress(self.segment_id, doc),
};
self.heap.push(wrapped_doc);
// we have not reached capacity yet, so we can just push the
// element.
self.heap.push(ComparableDoc { feature, doc });
}
}
fn requires_scoring(&self) -> bool {
true
}
}
#[cfg(test)]
mod tests {
use super::*;
use collector::Collector;
use DocId;
use Score;
use super::{TopCollector, TopSegmentCollector};
use crate::DocAddress;
#[test]
fn test_top_collector_not_at_capacity() {
let mut top_collector = TopCollector::with_limit(4);
let mut top_collector = TopSegmentCollector::new(0, 4);
top_collector.collect(1, 0.8);
top_collector.collect(3, 0.2);
top_collector.collect(5, 0.3);
assert!(!top_collector.at_capacity());
let score_docs: Vec<(Score, DocId)> = top_collector
.score_docs()
.into_iter()
.map(|(score, doc_address)| (score, doc_address.doc()))
.collect();
assert_eq!(score_docs, vec![(0.8, 1), (0.3, 5), (0.2, 3)]);
assert_eq!(
top_collector.harvest(),
vec![
(0.8, DocAddress(0, 1)),
(0.3, DocAddress(0, 5)),
(0.2, DocAddress(0, 3))
]
);
}
#[test]
fn test_top_collector_at_capacity() {
let mut top_collector = TopCollector::with_limit(4);
let mut top_collector = TopSegmentCollector::new(0, 4);
top_collector.collect(1, 0.8);
top_collector.collect(3, 0.2);
top_collector.collect(5, 0.3);
top_collector.collect(7, 0.9);
top_collector.collect(9, -0.2);
assert!(top_collector.at_capacity());
{
let score_docs: Vec<(Score, DocId)> = top_collector
.score_docs()
.into_iter()
.map(|(score, doc_address)| (score, doc_address.doc()))
.collect();
assert_eq!(score_docs, vec![(0.9, 7), (0.8, 1), (0.3, 5), (0.2, 3)]);
}
{
let docs: Vec<DocId> = top_collector
.docs()
.into_iter()
.map(|doc_address| doc_address.doc())
.collect();
assert_eq!(docs, vec![7, 1, 5, 3]);
}
assert_eq!(
top_collector.harvest(),
vec![
(0.9, DocAddress(0, 7)),
(0.8, DocAddress(0, 1)),
(0.3, DocAddress(0, 5)),
(0.2, DocAddress(0, 3))
]
);
}
#[test]
#[should_panic]
fn test_top_0() {
TopCollector::with_limit(0);
fn test_top_segment_collector_stable_ordering_for_equal_feature() {
// given that the documents are collected in ascending doc id order,
// when harvesting we have to guarantee stable sorting in case of a tie
// on the score
let doc_ids_collection = [4, 5, 6];
let score = 3.14;
let mut top_collector_limit_2 = TopSegmentCollector::new(0, 2);
for id in &doc_ids_collection {
top_collector_limit_2.collect(*id, score);
}
let mut top_collector_limit_3 = TopSegmentCollector::new(0, 3);
for id in &doc_ids_collection {
top_collector_limit_3.collect(*id, score);
}
assert_eq!(
top_collector_limit_2.harvest(),
top_collector_limit_3.harvest()[..2].to_vec(),
);
}
#[test]
fn test_top_collector_with_limit_and_offset() {
let collector = TopCollector::with_limit(2).and_offset(1);
let results = collector
.merge_fruits(vec![vec![
(0.9, DocAddress(0, 1)),
(0.8, DocAddress(0, 2)),
(0.7, DocAddress(0, 3)),
(0.6, DocAddress(0, 4)),
(0.5, DocAddress(0, 5)),
]])
.unwrap();
assert_eq!(
results,
vec![(0.8, DocAddress(0, 2)), (0.7, DocAddress(0, 3)),]
);
}
#[test]
fn test_top_collector_with_limit_larger_than_set_and_offset() {
let collector = TopCollector::with_limit(2).and_offset(1);
let results = collector
.merge_fruits(vec![vec![(0.9, DocAddress(0, 1)), (0.8, DocAddress(0, 2))]])
.unwrap();
assert_eq!(results, vec![(0.8, DocAddress(0, 2)),]);
}
#[test]
fn test_top_collector_with_limit_and_offset_larger_than_set() {
let collector = TopCollector::with_limit(2).and_offset(20);
let results = collector
.merge_fruits(vec![vec![(0.9, DocAddress(0, 1)), (0.8, DocAddress(0, 2))]])
.unwrap();
assert_eq!(results, vec![]);
}
}
#[cfg(all(test, feature = "unstable"))]
mod bench {
use super::TopSegmentCollector;
use test::Bencher;
#[bench]
fn bench_top_segment_collector_collect_not_at_capacity(b: &mut Bencher) {
let mut top_collector = TopSegmentCollector::new(0, 400);
b.iter(|| {
for i in 0..100 {
top_collector.collect(i, 0.8);
}
});
}
#[bench]
fn bench_top_segment_collector_collect_at_capacity(b: &mut Bencher) {
let mut top_collector = TopSegmentCollector::new(0, 100);
for i in 0..100 {
top_collector.collect(i, 0.8);
}
b.iter(|| {
for i in 0..100 {
top_collector.collect(i, 0.8);
}
});
}
#[bench]
fn bench_top_segment_collector_collect_and_harvest_many_ties(b: &mut Bencher) {
b.iter(|| {
let mut top_collector = TopSegmentCollector::new(0, 100);
for i in 0..100 {
top_collector.collect(i, 0.8);
}
// it would be nice to be able to do the setup N times but still
// measure only harvest(). We can't since harvest() consumes
// the top_collector.
top_collector.harvest()
});
}
#[bench]
fn bench_top_segment_collector_collect_and_harvest_no_tie(b: &mut Bencher) {
b.iter(|| {
let mut top_collector = TopSegmentCollector::new(0, 100);
let mut score = 1.0;
for i in 0..100 {
score += 1.0;
top_collector.collect(i, score);
}
// it would be nice to be able to do the setup N times but still
// measure only harvest(). We can't since harvest() consumes
// the top_collector.
top_collector.harvest()
});
}
}

831
src/collector/top_score_collector.rs Normal file
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use super::Collector;
use crate::collector::custom_score_top_collector::CustomScoreTopCollector;
use crate::collector::top_collector::TopSegmentCollector;
use crate::collector::top_collector::{ComparableDoc, TopCollector};
use crate::collector::tweak_score_top_collector::TweakedScoreTopCollector;
use crate::collector::{
CustomScorer, CustomSegmentScorer, ScoreSegmentTweaker, ScoreTweaker, SegmentCollector,
};
use crate::fastfield::FastFieldReader;
use crate::query::Weight;
use crate::schema::Field;
use crate::DocAddress;
use crate::DocId;
use crate::Score;
use crate::SegmentLocalId;
use crate::SegmentReader;
use std::collections::BinaryHeap;
use std::fmt;
/// The `TopDocs` collector keeps track of the top `K` documents
/// sorted by their score.
///
/// The implementation is based on a `BinaryHeap`.
/// The theorical complexity for collecting the top `K` out of `n` documents
/// is `O(n log K)`.
///
/// This collector guarantees a stable sorting in case of a tie on the
/// document score. As such, it is suitable to implement pagination.
///
/// ```rust
/// use tantivy::collector::TopDocs;
/// use tantivy::query::QueryParser;
/// use tantivy::schema::{Schema, TEXT};
/// use tantivy::{doc, DocAddress, Index};
///
/// let mut schema_builder = Schema::builder();
/// let title = schema_builder.add_text_field("title", TEXT);
/// let schema = schema_builder.build();
/// let index = Index::create_in_ram(schema);
///
/// let mut index_writer = index.writer_with_num_threads(1, 3_000_000).unwrap();
/// index_writer.add_document(doc!(title => "The Name of the Wind"));
/// index_writer.add_document(doc!(title => "The Diary of Muadib"));
/// index_writer.add_document(doc!(title => "A Dairy Cow"));
/// index_writer.add_document(doc!(title => "The Diary of a Young Girl"));
/// assert!(index_writer.commit().is_ok());
///
/// let reader = index.reader().unwrap();
/// let searcher = reader.searcher();
///
/// let query_parser = QueryParser::for_index(&index, vec![title]);
/// let query = query_parser.parse_query("diary").unwrap();
/// let top_docs = searcher.search(&query, &TopDocs::with_limit(2)).unwrap();
///
/// assert_eq!(top_docs[0].1, DocAddress(0, 1));
/// assert_eq!(top_docs[1].1, DocAddress(0, 3));
/// ```
pub struct TopDocs(TopCollector<Score>);
impl fmt::Debug for TopDocs {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(
f,
"TopDocs(limit={}, offset={})",
self.0.limit, self.0.offset
)
}
}
struct ScorerByFastFieldReader {
ff_reader: FastFieldReader<u64>,
}
impl CustomSegmentScorer<u64> for ScorerByFastFieldReader {
fn score(&mut self, doc: DocId) -> u64 {
self.ff_reader.get_u64(u64::from(doc))
}
}
struct ScorerByField {
field: Field,
}
impl CustomScorer<u64> for ScorerByField {
type Child = ScorerByFastFieldReader;
fn segment_scorer(&self, segment_reader: &SegmentReader) -> crate::Result<Self::Child> {
let ff_reader = segment_reader
.fast_fields()
.u64(self.field)
.ok_or_else(|| {
crate::TantivyError::SchemaError(format!(
"Field requested ({:?}) is not a i64/u64 fast field.",
self.field
))
})?;
Ok(ScorerByFastFieldReader { ff_reader })
}
}
impl TopDocs {
/// Creates a top score collector, with a number of documents equal to "limit".
///
/// # Panics
/// The method panics if limit is 0
pub fn with_limit(limit: usize) -> TopDocs {
TopDocs(TopCollector::with_limit(limit))
}
/// Skip the first "offset" documents when collecting.
///
/// This is equivalent to `OFFSET` in MySQL or PostgreSQL and `start` in
/// Lucene's TopDocsCollector.
///
/// ```rust
/// use tantivy::collector::TopDocs;
/// use tantivy::query::QueryParser;
/// use tantivy::schema::{Schema, TEXT};
/// use tantivy::{doc, DocAddress, Index};
///
/// let mut schema_builder = Schema::builder();
/// let title = schema_builder.add_text_field("title", TEXT);
/// let schema = schema_builder.build();
/// let index = Index::create_in_ram(schema);
///
/// let mut index_writer = index.writer_with_num_threads(1, 3_000_000).unwrap();
/// index_writer.add_document(doc!(title => "The Name of the Wind"));
/// index_writer.add_document(doc!(title => "The Diary of Muadib"));
/// index_writer.add_document(doc!(title => "A Dairy Cow"));
/// index_writer.add_document(doc!(title => "The Diary of a Young Girl"));
/// index_writer.add_document(doc!(title => "The Diary of Lena Mukhina"));
/// assert!(index_writer.commit().is_ok());
///
/// let reader = index.reader().unwrap();
/// let searcher = reader.searcher();
///
/// let query_parser = QueryParser::for_index(&index, vec![title]);
/// let query = query_parser.parse_query("diary").unwrap();
/// let top_docs = searcher.search(&query, &TopDocs::with_limit(2).and_offset(1)).unwrap();
///
/// assert_eq!(top_docs.len(), 2);
/// assert_eq!(top_docs[0].1, DocAddress(0, 4));
/// assert_eq!(top_docs[1].1, DocAddress(0, 3));
/// ```
pub fn and_offset(self, offset: usize) -> TopDocs {
TopDocs(self.0.and_offset(offset))
}
/// Set top-K to rank documents by a given fast field.
///
/// ```rust
/// # use tantivy::schema::{Schema, FAST, TEXT};
/// # use tantivy::{doc, Index, DocAddress};
/// # use tantivy::query::{Query, QueryParser};
/// use tantivy::Searcher;
/// use tantivy::collector::TopDocs;
/// use tantivy::schema::Field;
///
/// # fn main() -> tantivy::Result<()> {
/// # let mut schema_builder = Schema::builder();
/// # let title = schema_builder.add_text_field("title", TEXT);
/// # let rating = schema_builder.add_u64_field("rating", FAST);
/// # let schema = schema_builder.build();
/// #
/// # let index = Index::create_in_ram(schema);
/// # let mut index_writer = index.writer_with_num_threads(1, 3_000_000)?;
/// # index_writer.add_document(doc!(title => "The Name of the Wind", rating => 92u64));
/// # index_writer.add_document(doc!(title => "The Diary of Muadib", rating => 97u64));
/// # index_writer.add_document(doc!(title => "A Dairy Cow", rating => 63u64));
/// # index_writer.add_document(doc!(title => "The Diary of a Young Girl", rating => 80u64));
/// # assert!(index_writer.commit().is_ok());
/// # let reader = index.reader().unwrap();
/// # let query = QueryParser::for_index(&index, vec![title]).parse_query("diary")?;
/// # let top_docs = docs_sorted_by_rating(&reader.searcher(), &query, rating)?;
/// # assert_eq!(top_docs,
/// # vec![(97u64, DocAddress(0u32, 1)),
/// # (80u64, DocAddress(0u32, 3))]);
/// # Ok(())
/// # }
///
///
/// /// Searches the document matching the given query, and
/// /// collects the top 10 documents, order by the u64-`field`
/// /// given in argument.
/// ///
/// /// `field` is required to be a FAST field.
/// fn docs_sorted_by_rating(searcher: &Searcher,
/// query: &dyn Query,
/// sort_by_field: Field)
/// -> tantivy::Result<Vec<(u64, DocAddress)>> {
///
/// // This is where we build our topdocs collector
/// //
/// // Note the generics parameter that needs to match the
/// // type `sort_by_field`.
/// let top_docs_by_rating = TopDocs
/// ::with_limit(10)
/// .order_by_u64_field(sort_by_field);
///
/// // ... and here are our documents. Note this is a simple vec.
/// // The `u64` in the pair is the value of our fast field for
/// // each documents.
/// //
/// // The vec is sorted decreasingly by `sort_by_field`, and has a
/// // length of 10, or less if not enough documents matched the
/// // query.
/// let resulting_docs: Vec<(u64, DocAddress)> =
/// searcher.search(query, &top_docs_by_rating)?;
///
/// Ok(resulting_docs)
/// }
/// ```
///
/// # Panics
///
/// May panic if the field requested is not a fast field.
///
pub fn order_by_u64_field(
self,
field: Field,
) -> impl Collector<Fruit = Vec<(u64, DocAddress)>> {
self.custom_score(ScorerByField { field })
}
/// Ranks the documents using a custom score.
///
/// This method offers a convenient way to tweak or replace
/// the documents score. As suggested by the prototype you can
/// manually define your own [`ScoreTweaker`](./trait.ScoreTweaker.html)
/// and pass it as an argument, but there is a much simpler way to
/// tweak your score: you can use a closure as in the following
/// example.
///
/// # Example
///
/// Typically, you will want to rely on one or more fast fields,
/// to alter the original relevance `Score`.
///
/// For instance, in the following, we assume that we are implementing
/// an e-commerce website that has a fast field called `popularity`
/// that rates whether a product is typically often bought by users.
///
/// In the following example will will tweak our ranking a bit by
/// boosting popular products a notch.
///
/// In more serious application, this tweaking could involved running a
/// learning-to-rank model over various features
///
/// ```rust
/// # use tantivy::schema::{Schema, FAST, TEXT};
/// # use tantivy::{doc, Index, DocAddress, DocId, Score};
/// # use tantivy::query::QueryParser;
/// use tantivy::SegmentReader;
/// use tantivy::collector::TopDocs;
/// use tantivy::schema::Field;
///
/// fn create_schema() -> Schema {
/// let mut schema_builder = Schema::builder();
/// schema_builder.add_text_field("product_name", TEXT);
/// schema_builder.add_u64_field("popularity", FAST);
/// schema_builder.build()
/// }
///
/// fn create_index() -> tantivy::Result<Index> {
/// let schema = create_schema();
/// let index = Index::create_in_ram(schema);
/// let mut index_writer = index.writer_with_num_threads(1, 3_000_000)?;
/// let product_name = index.schema().get_field("product_name").unwrap();
/// let popularity: Field = index.schema().get_field("popularity").unwrap();
/// index_writer.add_document(doc!(product_name => "The Diary of Muadib", popularity => 1u64));
/// index_writer.add_document(doc!(product_name => "A Dairy Cow", popularity => 10u64));
/// index_writer.add_document(doc!(product_name => "The Diary of a Young Girl", popularity => 15u64));
/// index_writer.commit()?;
/// Ok(index)
/// }
///
/// let index = create_index().unwrap();
/// let product_name = index.schema().get_field("product_name").unwrap();
/// let popularity: Field = index.schema().get_field("popularity").unwrap();
///
/// let user_query_str = "diary";
/// let query_parser = QueryParser::for_index(&index, vec![product_name]);
/// let query = query_parser.parse_query(user_query_str).unwrap();
///
/// // This is where we build our collector with our custom score.
/// let top_docs_by_custom_score = TopDocs
/// ::with_limit(10)
/// .tweak_score(move |segment_reader: &SegmentReader| {
/// // The argument is a function that returns our scoring
/// // function.
/// //
/// // The point of this "mother" function is to gather all
/// // of the segment level information we need for scoring.
/// // Typically, fast_fields.
/// //
/// // In our case, we will get a reader for the popularity
/// // fast field.
/// let popularity_reader =
/// segment_reader.fast_fields().u64(popularity).unwrap();
///
/// // We can now define our actual scoring function
/// move |doc: DocId, original_score: Score| {
/// let popularity: u64 = popularity_reader.get(doc);
/// // Well.. For the sake of the example we use a simple logarithm
/// // function.
/// let popularity_boost_score = ((2u64 + popularity) as Score).log2();
/// popularity_boost_score * original_score
/// }
/// });
/// let reader = index.reader().unwrap();
/// let searcher = reader.searcher();
/// // ... and here are our documents. Note this is a simple vec.
/// // The `Score` in the pair is our tweaked score.
/// let resulting_docs: Vec<(Score, DocAddress)> =
/// searcher.search(&query, &top_docs_by_custom_score).unwrap();
/// ```
///
/// # See also
/// [custom_score(...)](#method.custom_score).
pub fn tweak_score<TScore, TScoreSegmentTweaker, TScoreTweaker>(
self,
score_tweaker: TScoreTweaker,
) -> impl Collector<Fruit = Vec<(TScore, DocAddress)>>
where
TScore: 'static + Send + Sync + Clone + PartialOrd,
TScoreSegmentTweaker: ScoreSegmentTweaker<TScore> + 'static,
TScoreTweaker: ScoreTweaker<TScore, Child = TScoreSegmentTweaker> + Send + Sync,
{
TweakedScoreTopCollector::new(score_tweaker, self.0.into_tscore())
}
/// Ranks the documents using a custom score.
///
/// This method offers a convenient way to use a different score.
///
/// As suggested by the prototype you can manually define your
/// own [`CustomScorer`](./trait.CustomScorer.html)
/// and pass it as an argument, but there is a much simpler way to
/// tweak your score: you can use a closure as in the following
/// example.
///
/// # Limitation
///
/// This method only makes it possible to compute the score from a given
/// `DocId`, fastfield values for the doc and any information you could
/// have precomputed beforehands. It does not make it possible for instance
/// to compute something like TfIdf as it does not have access to the list of query
/// terms present in the document, nor the term frequencies for the different terms.
///
/// It can be used if your search engine relies on a learning-to-rank model for instance,
/// which does not rely on the term frequencies or positions as features.
///
/// # Example
///
/// ```rust
/// # use tantivy::schema::{Schema, FAST, TEXT};
/// # use tantivy::{doc, Index, DocAddress, DocId};
/// # use tantivy::query::QueryParser;
/// use tantivy::SegmentReader;
/// use tantivy::collector::TopDocs;
/// use tantivy::schema::Field;
///
/// # fn create_schema() -> Schema {
/// # let mut schema_builder = Schema::builder();
/// # schema_builder.add_text_field("product_name", TEXT);
/// # schema_builder.add_u64_field("popularity", FAST);
/// # schema_builder.add_u64_field("boosted", FAST);
/// # schema_builder.build()
/// # }
/// #
/// # fn main() -> tantivy::Result<()> {
/// # let schema = create_schema();
/// # let index = Index::create_in_ram(schema);
/// # let mut index_writer = index.writer_with_num_threads(1, 3_000_000)?;
/// # let product_name = index.schema().get_field("product_name").unwrap();
/// #
/// let popularity: Field = index.schema().get_field("popularity").unwrap();
/// let boosted: Field = index.schema().get_field("boosted").unwrap();
/// # index_writer.add_document(doc!(boosted=>1u64, product_name => "The Diary of Muadib", popularity => 1u64));
/// # index_writer.add_document(doc!(boosted=>0u64, product_name => "A Dairy Cow", popularity => 10u64));
/// # index_writer.add_document(doc!(boosted=>0u64, product_name => "The Diary of a Young Girl", popularity => 15u64));
/// # index_writer.commit()?;
/// // ...
/// # let user_query = "diary";
/// # let query = QueryParser::for_index(&index, vec![product_name]).parse_query(user_query)?;
///
/// // This is where we build our collector with our custom score.
/// let top_docs_by_custom_score = TopDocs
/// ::with_limit(10)
/// .custom_score(move |segment_reader: &SegmentReader| {
/// // The argument is a function that returns our scoring
/// // function.
/// //
/// // The point of this "mother" function is to gather all
/// // of the segment level information we need for scoring.
/// // Typically, fast_fields.
/// //
/// // In our case, we will get a reader for the popularity
/// // fast field and a boosted field.
/// //
/// // We want to get boosted items score, and when we get
/// // a tie, return the item with the highest popularity.
/// //
/// // Note that this is implemented by using a `(u64, u64)`
/// // as a score.
/// let popularity_reader =
/// segment_reader.fast_fields().u64(popularity).unwrap();
/// let boosted_reader =
/// segment_reader.fast_fields().u64(boosted).unwrap();
///
/// // We can now define our actual scoring function
/// move |doc: DocId| {
/// let popularity: u64 = popularity_reader.get(doc);
/// let boosted: u64 = boosted_reader.get(doc);
/// // Score do not have to be `f64` in tantivy.
/// // Here we return a couple to get lexicographical order
/// // for free.
/// (boosted, popularity)
/// }
/// });
/// # let reader = index.reader()?;
/// # let searcher = reader.searcher();
/// // ... and here are our documents. Note this is a simple vec.
/// // The `Score` in the pair is our tweaked score.
/// let resulting_docs: Vec<((u64, u64), DocAddress)> =
/// searcher.search(&*query, &top_docs_by_custom_score)?;
///
/// # Ok(())
/// # }
/// ```
///
/// # See also
/// [tweak_score(...)](#method.tweak_score).
pub fn custom_score<TScore, TCustomSegmentScorer, TCustomScorer>(
self,
custom_score: TCustomScorer,
) -> impl Collector<Fruit = Vec<(TScore, DocAddress)>>
where
TScore: 'static + Send + Sync + Clone + PartialOrd,
TCustomSegmentScorer: CustomSegmentScorer<TScore> + 'static,
TCustomScorer: CustomScorer<TScore, Child = TCustomSegmentScorer> + Send + Sync,
{
CustomScoreTopCollector::new(custom_score, self.0.into_tscore())
}
}
impl Collector for TopDocs {
type Fruit = Vec<(Score, DocAddress)>;
type Child = TopScoreSegmentCollector;
fn for_segment(
&self,
segment_local_id: SegmentLocalId,
reader: &SegmentReader,
) -> crate::Result<Self::Child> {
let collector = self.0.for_segment(segment_local_id, reader)?;
Ok(TopScoreSegmentCollector(collector))
}
fn requires_scoring(&self) -> bool {
true
}
fn merge_fruits(
&self,
child_fruits: Vec<Vec<(Score, DocAddress)>>,
) -> crate::Result<Self::Fruit> {
self.0.merge_fruits(child_fruits)
}
fn collect_segment(
&self,
weight: &dyn Weight,
segment_ord: u32,
reader: &SegmentReader,
) -> crate::Result<<Self::Child as SegmentCollector>::Fruit> {
let heap_len = self.0.limit + self.0.offset;
let mut heap: BinaryHeap<ComparableDoc<Score, DocId>> = BinaryHeap::with_capacity(heap_len);
if let Some(delete_bitset) = reader.delete_bitset() {
let mut threshold = Score::MIN;
weight.for_each_pruning(threshold, reader, &mut |doc, score| {
if delete_bitset.is_deleted(doc) {
return threshold;
}
let heap_item = ComparableDoc {
feature: score,
doc,
};
if heap.len() < heap_len {
heap.push(heap_item);
if heap.len() == heap_len {
threshold = heap.peek().map(|el| el.feature).unwrap_or(Score::MIN);
}
return threshold;
}
*heap.peek_mut().unwrap() = heap_item;
threshold = heap.peek().map(|el| el.feature).unwrap_or(Score::MIN);
threshold
})?;
} else {
weight.for_each_pruning(Score::MIN, reader, &mut |doc, score| {
let heap_item = ComparableDoc {
feature: score,
doc,
};
if heap.len() < heap_len {
heap.push(heap_item);
// TODO the threshold is suboptimal for heap.len == heap_len
if heap.len() == heap_len {
return heap.peek().map(|el| el.feature).unwrap_or(Score::MIN);
} else {
return Score::MIN;
}
}
*heap.peek_mut().unwrap() = heap_item;
heap.peek().map(|el| el.feature).unwrap_or(Score::MIN)
})?;
}
let fruit = heap
.into_sorted_vec()
.into_iter()
.map(|cid| (cid.feature, DocAddress(segment_ord, cid.doc)))
.collect();
Ok(fruit)
}
}
/// Segment Collector associated to `TopDocs`.
pub struct TopScoreSegmentCollector(TopSegmentCollector<Score>);
impl SegmentCollector for TopScoreSegmentCollector {
type Fruit = Vec<(Score, DocAddress)>;
fn collect(&mut self, doc: DocId, score: Score) {
self.0.collect(doc, score);
}
fn harvest(self) -> Vec<(Score, DocAddress)> {
self.0.harvest()
}
}
#[cfg(test)]
mod tests {
use super::TopDocs;
use crate::collector::Collector;
use crate::query::{AllQuery, Query, QueryParser};
use crate::schema::{Field, Schema, FAST, STORED, TEXT};
use crate::Index;
use crate::IndexWriter;
use crate::Score;
use crate::{DocAddress, DocId, SegmentReader};
fn make_index() -> Index {
let mut schema_builder = Schema::builder();
let text_field = schema_builder.add_text_field("text", TEXT);
let schema = schema_builder.build();
let index = Index::create_in_ram(schema);
{
// writing the segment
let mut index_writer = index.writer_with_num_threads(1, 3_000_000).unwrap();
index_writer.add_document(doc!(text_field=>"Hello happy tax payer."));
index_writer.add_document(doc!(text_field=>"Droopy says hello happy tax payer"));
index_writer.add_document(doc!(text_field=>"I like Droopy"));
assert!(index_writer.commit().is_ok());
}
index
}
fn assert_results_equals(results: &[(Score, DocAddress)], expected: &[(Score, DocAddress)]) {
for (result, expected) in results.iter().zip(expected.iter()) {
assert_eq!(result.1, expected.1);
crate::assert_nearly_equals!(result.0, expected.0);
}
}
#[test]
fn test_top_collector_not_at_capacity() {
let index = make_index();
let field = index.schema().get_field("text").unwrap();
let query_parser = QueryParser::for_index(&index, vec![field]);
let text_query = query_parser.parse_query("droopy tax").unwrap();
let score_docs: Vec<(Score, DocAddress)> = index
.reader()
.unwrap()
.searcher()
.search(&text_query, &TopDocs::with_limit(4))
.unwrap();
assert_results_equals(
&score_docs,
&[
(0.81221175, DocAddress(0u32, 1)),
(0.5376842, DocAddress(0u32, 2)),
(0.48527452, DocAddress(0, 0)),
],
);
}
#[test]
fn test_top_collector_not_at_capacity_with_offset() {
let index = make_index();
let field = index.schema().get_field("text").unwrap();
let query_parser = QueryParser::for_index(&index, vec![field]);
let text_query = query_parser.parse_query("droopy tax").unwrap();
let score_docs: Vec<(Score, DocAddress)> = index
.reader()
.unwrap()
.searcher()
.search(&text_query, &TopDocs::with_limit(4).and_offset(2))
.unwrap();
assert_results_equals(&score_docs[..], &[(0.48527452, DocAddress(0, 0))]);
}
#[test]
fn test_top_collector_at_capacity() {
let index = make_index();
let field = index.schema().get_field("text").unwrap();
let query_parser = QueryParser::for_index(&index, vec![field]);
let text_query = query_parser.parse_query("droopy tax").unwrap();
let score_docs: Vec<(Score, DocAddress)> = index
.reader()
.unwrap()
.searcher()
.search(&text_query, &TopDocs::with_limit(2))
.unwrap();
assert_results_equals(
&score_docs,
&[
(0.81221175, DocAddress(0u32, 1)),
(0.5376842, DocAddress(0u32, 2)),
],
);
}
#[test]
fn test_top_collector_at_capacity_with_offset() {
let index = make_index();
let field = index.schema().get_field("text").unwrap();
let query_parser = QueryParser::for_index(&index, vec![field]);
let text_query = query_parser.parse_query("droopy tax").unwrap();
let score_docs: Vec<(Score, DocAddress)> = index
.reader()
.unwrap()
.searcher()
.search(&text_query, &TopDocs::with_limit(2).and_offset(1))
.unwrap();
assert_results_equals(
&score_docs[..],
&[
(0.5376842, DocAddress(0u32, 2)),
(0.48527452, DocAddress(0, 0)),
],
);
}
#[test]
fn test_top_collector_stable_sorting() {
let index = make_index();
// using AllQuery to get a constant score
let searcher = index.reader().unwrap().searcher();
let page_1 = searcher.search(&AllQuery, &TopDocs::with_limit(2)).unwrap();
let page_2 = searcher.search(&AllQuery, &TopDocs::with_limit(3)).unwrap();
// precondition for the test to be meaningful: we did get documents
// with the same score
assert!(page_1.iter().all(|result| result.0 == page_1[0].0));
assert!(page_2.iter().all(|result| result.0 == page_2[0].0));
// sanity check since we're relying on make_index()
assert_eq!(page_1.len(), 2);
assert_eq!(page_2.len(), 3);
assert_eq!(page_1, &page_2[..page_1.len()]);
}
#[test]
#[should_panic]
fn test_top_0() {
TopDocs::with_limit(0);
}
const TITLE: &str = "title";
const SIZE: &str = "size";
#[test]
fn test_top_field_collector_not_at_capacity() {
let mut schema_builder = Schema::builder();
let title = schema_builder.add_text_field(TITLE, TEXT);
let size = schema_builder.add_u64_field(SIZE, FAST);
let schema = schema_builder.build();
let (index, query) = index("beer", title, schema, |index_writer| {
index_writer.add_document(doc!(
title => "bottle of beer",
size => 12u64,
));
index_writer.add_document(doc!(
title => "growler of beer",
size => 64u64,
));
index_writer.add_document(doc!(
title => "pint of beer",
size => 16u64,
));
});
let searcher = index.reader().unwrap().searcher();
let top_collector = TopDocs::with_limit(4).order_by_u64_field(size);
let top_docs: Vec<(u64, DocAddress)> = searcher.search(&query, &top_collector).unwrap();
assert_eq!(
&top_docs[..],
&[
(64, DocAddress(0, 1)),
(16, DocAddress(0, 2)),
(12, DocAddress(0, 0))
]
);
}
#[test]
#[should_panic]
fn test_field_does_not_exist() {
let mut schema_builder = Schema::builder();
let title = schema_builder.add_text_field(TITLE, TEXT);
let size = schema_builder.add_u64_field(SIZE, FAST);
let schema = schema_builder.build();
let (index, _) = index("beer", title, schema, |index_writer| {
index_writer.add_document(doc!(
title => "bottle of beer",
size => 12u64,
));
});
let searcher = index.reader().unwrap().searcher();
let top_collector = TopDocs::with_limit(4).order_by_u64_field(Field::from_field_id(2));
let segment_reader = searcher.segment_reader(0u32);
top_collector
.for_segment(0, segment_reader)
.expect("should panic");
}
#[test]
fn test_field_not_fast_field() {
let mut schema_builder = Schema::builder();
let title = schema_builder.add_text_field(TITLE, TEXT);
let size = schema_builder.add_u64_field(SIZE, STORED);
let schema = schema_builder.build();
let (index, _) = index("beer", title, schema, |index_writer| {
index_writer.add_document(doc!(
title => "bottle of beer",
size => 12u64,
));
});
let searcher = index.reader().unwrap().searcher();
let segment = searcher.segment_reader(0);
let top_collector = TopDocs::with_limit(4).order_by_u64_field(size);
let err = top_collector.for_segment(0, segment);
if let Err(crate::TantivyError::SchemaError(msg)) = err {
assert_eq!(
msg,
"Field requested (Field(1)) is not a i64/u64 fast field."
);
} else {
assert!(false);
}
}
#[test]
fn test_tweak_score_top_collector_with_offset() {
let index = make_index();
let field = index.schema().get_field("text").unwrap();
let query_parser = QueryParser::for_index(&index, vec![field]);
let text_query = query_parser.parse_query("droopy tax").unwrap();
let collector = TopDocs::with_limit(2).and_offset(1).tweak_score(
move |_segment_reader: &SegmentReader| move |doc: DocId, _original_score: Score| doc,
);
let score_docs: Vec<(u32, DocAddress)> = index
.reader()
.unwrap()
.searcher()
.search(&text_query, &collector)
.unwrap();
assert_eq!(
score_docs,
vec![(1, DocAddress(0, 1)), (0, DocAddress(0, 0)),]
);
}
#[test]
fn test_custom_score_top_collector_with_offset() {
let index = make_index();
let field = index.schema().get_field("text").unwrap();
let query_parser = QueryParser::for_index(&index, vec![field]);
let text_query = query_parser.parse_query("droopy tax").unwrap();
let collector = TopDocs::with_limit(2)
.and_offset(1)
.custom_score(move |_segment_reader: &SegmentReader| move |doc: DocId| doc);
let score_docs: Vec<(u32, DocAddress)> = index
.reader()
.unwrap()
.searcher()
.search(&text_query, &collector)
.unwrap();
assert_eq!(
score_docs,
vec![(1, DocAddress(0, 1)), (0, DocAddress(0, 0)),]
);
}
fn index(
query: &str,
query_field: Field,
schema: Schema,
mut doc_adder: impl FnMut(&mut IndexWriter) -> (),
) -> (Index, Box<dyn Query>) {
let index = Index::create_in_ram(schema);
let mut index_writer = index.writer_with_num_threads(1, 3_000_000).unwrap();
doc_adder(&mut index_writer);
index_writer.commit().unwrap();
let query_parser = QueryParser::for_index(&index, vec![query_field]);
let query = query_parser.parse_query(query).unwrap();
(index, query)
}
}

129
src/collector/tweak_score_top_collector.rs Normal file
View File

@@ -0,0 +1,129 @@
use crate::collector::top_collector::{TopCollector, TopSegmentCollector};
use crate::collector::{Collector, SegmentCollector};
use crate::DocAddress;
use crate::{DocId, Result, Score, SegmentReader};
pub(crate) struct TweakedScoreTopCollector<TScoreTweaker, TScore = Score> {
score_tweaker: TScoreTweaker,
collector: TopCollector<TScore>,
}
impl<TScoreTweaker, TScore> TweakedScoreTopCollector<TScoreTweaker, TScore>
where
TScore: Clone + PartialOrd,
{
pub fn new(
score_tweaker: TScoreTweaker,
collector: TopCollector<TScore>,
) -> TweakedScoreTopCollector<TScoreTweaker, TScore> {
TweakedScoreTopCollector {
score_tweaker,
collector,
}
}
}
/// A `ScoreSegmentTweaker` makes it possible to modify the default score
/// for a given document belonging to a specific segment.
///
/// It is the segment local version of the [`ScoreTweaker`](./trait.ScoreTweaker.html).
pub trait ScoreSegmentTweaker<TScore>: 'static {
/// Tweak the given `score` for the document `doc`.
fn score(&mut self, doc: DocId, score: Score) -> TScore;
}
/// `ScoreTweaker` makes it possible to tweak the score
/// emitted by the scorer into another one.
///
/// The `ScoreTweaker` itself does not make much of the computation itself.
/// Instead, it helps constructing `Self::Child` instances that will compute
/// the score at a segment scale.
pub trait ScoreTweaker<TScore>: Sync {
/// Type of the associated [`ScoreSegmentTweaker`](./trait.ScoreSegmentTweaker.html).
type Child: ScoreSegmentTweaker<TScore>;
/// Builds a child tweaker for a specific segment. The child scorer is associated to
/// a specific segment.
fn segment_tweaker(&self, segment_reader: &SegmentReader) -> Result<Self::Child>;
}
impl<TScoreTweaker, TScore> Collector for TweakedScoreTopCollector<TScoreTweaker, TScore>
where
TScoreTweaker: ScoreTweaker<TScore> + Send + Sync,
TScore: 'static + PartialOrd + Clone + Send + Sync,
{
type Fruit = Vec<(TScore, DocAddress)>;
type Child = TopTweakedScoreSegmentCollector<TScoreTweaker::Child, TScore>;
fn for_segment(
&self,
segment_local_id: u32,
segment_reader: &SegmentReader,
) -> Result<Self::Child> {
let segment_scorer = self.score_tweaker.segment_tweaker(segment_reader)?;
let segment_collector = self
.collector
.for_segment(segment_local_id, segment_reader)?;
Ok(TopTweakedScoreSegmentCollector {
segment_collector,
segment_scorer,
})
}
fn requires_scoring(&self) -> bool {
true
}
fn merge_fruits(&self, segment_fruits: Vec<Self::Fruit>) -> Result<Self::Fruit> {
self.collector.merge_fruits(segment_fruits)
}
}
pub struct TopTweakedScoreSegmentCollector<TSegmentScoreTweaker, TScore>
where
TScore: 'static + PartialOrd + Clone + Send + Sync + Sized,
TSegmentScoreTweaker: ScoreSegmentTweaker<TScore>,
{
segment_collector: TopSegmentCollector<TScore>,
segment_scorer: TSegmentScoreTweaker,
}
impl<TSegmentScoreTweaker, TScore> SegmentCollector
for TopTweakedScoreSegmentCollector<TSegmentScoreTweaker, TScore>
where
TScore: 'static + PartialOrd + Clone + Send + Sync,
TSegmentScoreTweaker: 'static + ScoreSegmentTweaker<TScore>,
{
type Fruit = Vec<(TScore, DocAddress)>;
fn collect(&mut self, doc: DocId, score: Score) {
let score = self.segment_scorer.score(doc, score);
self.segment_collector.collect(doc, score);
}
fn harvest(self) -> Vec<(TScore, DocAddress)> {
self.segment_collector.harvest()
}
}
impl<F, TScore, TSegmentScoreTweaker> ScoreTweaker<TScore> for F
where
F: 'static + Send + Sync + Fn(&SegmentReader) -> TSegmentScoreTweaker,
TSegmentScoreTweaker: ScoreSegmentTweaker<TScore>,
{
type Child = TSegmentScoreTweaker;
fn segment_tweaker(&self, segment_reader: &SegmentReader) -> Result<Self::Child> {
Ok((self)(segment_reader))
}
}
impl<F, TScore> ScoreSegmentTweaker<TScore> for F
where
F: 'static + FnMut(DocId, Score) -> TScore,
{
fn score(&mut self, doc: DocId, score: Score) -> TScore {
(self)(doc, score)
}
}

70
src/common/bitpacker.rs
View File

@@ -1,9 +1,6 @@
use common::serialize::BinarySerializable;
use byteorder::{ByteOrder, LittleEndian, WriteBytesExt};
use std::io;
use std::io::Write;
use std::mem;
use std::ops::Deref;
use std::ptr;
pub(crate) struct BitPacker {
mini_buffer: u64,
@@ -18,7 +15,7 @@ impl BitPacker {
}
}
pub fn write<TWrite: Write>(
pub fn write<TWrite: io::Write>(
&mut self,
val: u64,
num_bits: u8,
@@ -28,14 +25,14 @@ impl BitPacker {
let num_bits = num_bits as usize;
if self.mini_buffer_written + num_bits > 64 {
self.mini_buffer |= val_u64.wrapping_shl(self.mini_buffer_written as u32);
self.mini_buffer.serialize(output)?;
output.write_u64::<LittleEndian>(self.mini_buffer)?;
self.mini_buffer = val_u64.wrapping_shr((64 - self.mini_buffer_written) as u32);
self.mini_buffer_written = self.mini_buffer_written + num_bits - 64;
} else {
self.mini_buffer |= val_u64 << self.mini_buffer_written;
self.mini_buffer_written += num_bits;
if self.mini_buffer_written == 64 {
self.mini_buffer.serialize(output)?;
output.write_u64::<LittleEndian>(self.mini_buffer)?;
self.mini_buffer_written = 0;
self.mini_buffer = 0u64;
}
@@ -43,17 +40,18 @@ impl BitPacker {
Ok(())
}
pub fn flush<TWrite: Write>(&mut self, output: &mut TWrite) -> io::Result<()> {
pub fn flush<TWrite: io::Write>(&mut self, output: &mut TWrite) -> io::Result<()> {
if self.mini_buffer_written > 0 {
let num_bytes = (self.mini_buffer_written + 7) / 8;
let arr: [u8; 8] = unsafe { mem::transmute::<u64, [u8; 8]>(self.mini_buffer.to_le()) };
let mut arr: [u8; 8] = [0u8; 8];
LittleEndian::write_u64(&mut arr, self.mini_buffer);
output.write_all(&arr[..num_bytes])?;
self.mini_buffer_written = 0;
}
Ok(())
}
pub fn close<TWrite: Write>(&mut self, output: &mut TWrite) -> io::Result<()> {
pub fn close<TWrite: io::Write>(&mut self, output: &mut TWrite) -> io::Result<()> {
self.flush(output)?;
// Padding the write file to simplify reads.
output.write_all(&[0u8; 7])?;
@@ -66,7 +64,7 @@ pub struct BitUnpacker<Data>
where
Data: Deref<Target = [u8]>,
{
num_bits: usize,
num_bits: u64,
mask: u64,
data: Data,
}
@@ -82,13 +80,13 @@ where
(1u64 << num_bits) - 1u64
};
BitUnpacker {
num_bits: num_bits as usize,
num_bits: u64::from(num_bits),
mask,
data,
}
}
pub fn get(&self, idx: usize) -> u64 {
pub fn get(&self, idx: u64) -> u64 {
if self.num_bits == 0 {
return 0u64;
}
@@ -99,40 +97,13 @@ where
let addr = addr_in_bits >> 3;
let bit_shift = addr_in_bits & 7;
debug_assert!(
addr + 8 <= data.len(),
addr + 8 <= data.len() as u64,
"The fast field field should have been padded with 7 bytes."
);
let val_unshifted_unmasked: u64 =
u64::from_le(unsafe { ptr::read_unaligned(data[addr..].as_ptr() as *const u64) });
let val_unshifted_unmasked: u64 = LittleEndian::read_u64(&data[(addr as usize)..]);
let val_shifted = (val_unshifted_unmasked >> bit_shift) as u64;
val_shifted & mask
}
/// Reads a range of values from the fast field.
///
/// The range of values read is from
/// `[start..start + output.len()[`
pub fn get_range(&self, start: u32, output: &mut [u64]) {
if self.num_bits == 0 {
for val in output.iter_mut() {
*val = 0u64;
}
} else {
let data: &[u8] = &*self.data;
let num_bits = self.num_bits;
let mask = self.mask;
let mut addr_in_bits = (start as usize) * num_bits;
for output_val in output.iter_mut() {
let addr = addr_in_bits >> 3;
let bit_shift = addr_in_bits & 7;
let val_unshifted_unmasked: u64 =
unsafe { ptr::read_unaligned(data[addr..].as_ptr() as *const u64) };
let val_shifted = (val_unshifted_unmasked >> bit_shift) as u64;
*output_val = val_shifted & mask;
addr_in_bits += num_bits;
}
}
}
}
#[cfg(test)]
@@ -158,7 +129,7 @@ mod test {
fn test_bitpacker_util(len: usize, num_bits: u8) {
let (bitunpacker, vals) = create_fastfield_bitpacker(len, num_bits);
for (i, val) in vals.iter().enumerate() {
assert_eq!(bitunpacker.get(i), *val);
assert_eq!(bitunpacker.get(i as u64), *val);
}
}
@@ -170,17 +141,4 @@ mod test {
test_bitpacker_util(6, 14);
test_bitpacker_util(1000, 14);
}
#[test]
fn test_bitpacker_range() {
let (bitunpacker, vals) = create_fastfield_bitpacker(100_000, 12);
let buffer_len = 100;
let mut buffer = vec![0u64; buffer_len];
for start in vec![0, 10, 20, 100, 1_000] {
bitunpacker.get_range(start as u32, &mut buffer[..]);
for i in 0..buffer_len {
assert_eq!(buffer[i], vals[start + i]);
}
}
}
}

53
src/common/bitset.rs
View File

@@ -5,7 +5,7 @@ use std::u64;
pub(crate) struct TinySet(u64);
impl fmt::Debug for TinySet {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
self.into_iter().collect::<Vec<u32>>().fmt(f)
}
}
@@ -33,18 +33,27 @@ impl TinySet {
TinySet(0u64)
}
pub fn clear(&mut self) {
self.0 = 0u64;
}
/// Returns the complement of the set in `[0, 64[`.
fn complement(&self) -> TinySet {
fn complement(self) -> TinySet {
TinySet(!self.0)
}
/// Returns true iff the `TinySet` contains the element `el`.
pub fn contains(&self, el: u32) -> bool {
pub fn contains(self, el: u32) -> bool {
!self.intersect(TinySet::singleton(el)).is_empty()
}
/// Returns the number of elements in the TinySet.
pub fn len(self) -> u32 {
self.0.count_ones()
}
/// Returns the intersection of `self` and `other`
pub fn intersect(&self, other: TinySet) -> TinySet {
pub fn intersect(self, other: TinySet) -> TinySet {
TinySet(self.0 & other.0)
}
@@ -77,7 +86,7 @@ impl TinySet {
/// Returns true iff the `TinySet` is empty.
#[inline(always)]
pub fn is_empty(&self) -> bool {
pub fn is_empty(self) -> bool {
self.0 == 0u64
}
@@ -109,22 +118,12 @@ impl TinySet {
pub fn range_greater_or_equal(from_included: u32) -> TinySet {
TinySet::range_lower(from_included).complement()
}
pub fn clear(&mut self) {
self.0 = 0u64;
}
pub fn len(&self) -> u32 {
self.0.count_ones()
}
}
#[derive(Clone)]
pub struct BitSet {
tinysets: Box<[TinySet]>,
len: usize, //< Technically it should be u32, but we
// count multiple inserts.
// `usize` guards us from overflow.
len: usize,
max_value: u32,
}
@@ -204,12 +203,12 @@ mod tests {
use super::BitSet;
use super::TinySet;
use docset::DocSet;
use query::BitSetDocSet;
use crate::docset::{DocSet, TERMINATED};
use crate::query::BitSetDocSet;
use crate::tests;
use crate::tests::generate_nonunique_unsorted;
use std::collections::BTreeSet;
use std::collections::HashSet;
use tests;
use tests::generate_nonunique_unsorted;
#[test]
fn test_tiny_set() {
@@ -266,23 +265,25 @@ mod tests {
#[test]
fn test_bitset_large() {
let arr = generate_nonunique_unsorted(1_000_000, 50_000);
let arr = generate_nonunique_unsorted(100_000, 5_000);
let mut btreeset: BTreeSet<u32> = BTreeSet::new();
let mut bitset = BitSet::with_max_value(1_000_000);
let mut bitset = BitSet::with_max_value(100_000);
for el in arr {
btreeset.insert(el);
bitset.insert(el);
}
for i in 0..1_000_000 {
for i in 0..100_000 {
assert_eq!(btreeset.contains(&i), bitset.contains(i));
}
assert_eq!(btreeset.len(), bitset.len());
let mut bitset_docset = BitSetDocSet::from(bitset);
let mut remaining = true;
for el in btreeset.into_iter() {
bitset_docset.advance();
assert!(remaining);
assert_eq!(bitset_docset.doc(), el);
remaining = bitset_docset.advance() != TERMINATED;
}
assert!(!bitset_docset.advance());
assert!(!remaining);
}
#[test]
@@ -342,7 +343,7 @@ mod tests {
#[test]
fn test_bitset_clear() {
let mut bitset = BitSet::with_max_value(1_000);
let els = tests::sample(1_000, 0.01f32);
let els = tests::sample(1_000, 0.01f64);
for &el in &els {
bitset.insert(el);
}

59
src/common/composite_file.rs
View File

@@ -1,9 +1,11 @@
use common::BinarySerializable;
use common::CountingWriter;
use common::VInt;
use directory::ReadOnlySource;
use directory::WritePtr;
use schema::Field;
use crate::common::BinarySerializable;
use crate::common::CountingWriter;
use crate::common::VInt;
use crate::directory::ReadOnlySource;
use crate::directory::{TerminatingWrite, WritePtr};
use crate::schema::Field;
use crate::space_usage::FieldUsage;
use crate::space_usage::PerFieldSpaceUsage;
use std::collections::HashMap;
use std::io::Write;
use std::io::{self, Read};
@@ -37,10 +39,10 @@ impl BinarySerializable for FileAddr {
/// A `CompositeWrite` is used to write a `CompositeFile`.
pub struct CompositeWrite<W = WritePtr> {
write: CountingWriter<W>,
offsets: HashMap<FileAddr, usize>,
offsets: HashMap<FileAddr, u64>,
}
impl<W: Write> CompositeWrite<W> {
impl<W: TerminatingWrite + Write> CompositeWrite<W> {
/// Crate a new API writer that writes a composite file
/// in a given write.
pub fn wrap(w: W) -> CompositeWrite<W> {
@@ -64,7 +66,7 @@ impl<W: Write> CompositeWrite<W> {
&mut self.write
}
/// Close the composite file.
/// Close the composite file
///
/// An index of the different field offsets
/// will be written as a footer.
@@ -72,7 +74,8 @@ impl<W: Write> CompositeWrite<W> {
let footer_offset = self.write.written_bytes();
VInt(self.offsets.len() as u64).serialize(&mut self.write)?;
let mut offset_fields: Vec<_> = self.offsets
let mut offset_fields: Vec<_> = self
.offsets
.iter()
.map(|(file_addr, offset)| (*offset, *file_addr))
.collect();
@@ -88,8 +91,7 @@ impl<W: Write> CompositeWrite<W> {
let footer_len = (self.write.written_bytes() - footer_offset) as u32;
footer_len.serialize(&mut self.write)?;
self.write.flush()?;
Ok(())
self.write.terminate()
}
}
@@ -112,7 +114,6 @@ impl CompositeFile {
let end = data.len();
let footer_len_data = data.slice_from(end - 4);
let footer_len = u32::deserialize(&mut footer_len_data.as_slice())? as usize;
let footer_start = end - 4 - footer_len;
let footer_data = data.slice(footer_start, footer_start + footer_len);
let mut footer_buffer = footer_data.as_slice();
@@ -166,16 +167,27 @@ impl CompositeFile {
.get(&FileAddr { field, idx })
.map(|&(from, to)| self.data.slice(from, to))
}
pub fn space_usage(&self) -> PerFieldSpaceUsage {
let mut fields = HashMap::new();
for (&field_addr, &(start, end)) in self.offsets_index.iter() {
fields
.entry(field_addr.field)
.or_insert_with(|| FieldUsage::empty(field_addr.field))
.add_field_idx(field_addr.idx, end - start);
}
PerFieldSpaceUsage::new(fields)
}
}
#[cfg(test)]
mod test {
use super::{CompositeFile, CompositeWrite};
use common::BinarySerializable;
use common::VInt;
use directory::{Directory, RAMDirectory};
use schema::Field;
use crate::common::BinarySerializable;
use crate::common::VInt;
use crate::directory::{Directory, RAMDirectory};
use crate::schema::Field;
use std::io::Write;
use std::path::Path;
@@ -187,13 +199,13 @@ mod test {
let w = directory.open_write(path).unwrap();
let mut composite_write = CompositeWrite::wrap(w);
{
let mut write_0 = composite_write.for_field(Field(0u32));
let mut write_0 = composite_write.for_field(Field::from_field_id(0u32));
VInt(32431123u64).serialize(&mut write_0).unwrap();
write_0.flush().unwrap();
}
{
let mut write_4 = composite_write.for_field(Field(4u32));
let mut write_4 = composite_write.for_field(Field::from_field_id(4u32));
VInt(2).serialize(&mut write_4).unwrap();
write_4.flush().unwrap();
}
@@ -203,14 +215,18 @@ mod test {
let r = directory.open_read(path).unwrap();
let composite_file = CompositeFile::open(&r).unwrap();
{
let file0 = composite_file.open_read(Field(0u32)).unwrap();
let file0 = composite_file
.open_read(Field::from_field_id(0u32))
.unwrap();
let mut file0_buf = file0.as_slice();
let payload_0 = VInt::deserialize(&mut file0_buf).unwrap().0;
assert_eq!(file0_buf.len(), 0);
assert_eq!(payload_0, 32431123u64);
}
{
let file4 = composite_file.open_read(Field(4u32)).unwrap();
let file4 = composite_file
.open_read(Field::from_field_id(4u32))
.unwrap();
let mut file4_buf = file4.as_slice();
let payload_4 = VInt::deserialize(&mut file4_buf).unwrap().0;
assert_eq!(file4_buf.len(), 0);
@@ -218,5 +234,4 @@ mod test {
}
}
}
}

27
src/common/counting_writer.rs
View File

@@ -1,9 +1,11 @@
use crate::directory::AntiCallToken;
use crate::directory::TerminatingWrite;
use std::io;
use std::io::Write;
pub struct CountingWriter<W> {
underlying: W,
written_bytes: usize,
written_bytes: u64,
}
impl<W: Write> CountingWriter<W> {
@@ -14,11 +16,11 @@ impl<W: Write> CountingWriter<W> {
}
}
pub fn written_bytes(&self) -> usize {
pub fn written_bytes(&self) -> u64 {
self.written_bytes
}
pub fn finish(mut self) -> io::Result<(W, usize)> {
pub fn finish(mut self) -> io::Result<(W, u64)> {
self.flush()?;
Ok((self.underlying, self.written_bytes))
}
@@ -27,15 +29,28 @@ impl<W: Write> CountingWriter<W> {
impl<W: Write> Write for CountingWriter<W> {
fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
let written_size = self.underlying.write(buf)?;
self.written_bytes += written_size;
self.written_bytes += written_size as u64;
Ok(written_size)
}
fn write_all(&mut self, buf: &[u8]) -> io::Result<()> {
self.underlying.write_all(buf)?;
self.written_bytes += buf.len() as u64;
Ok(())
}
fn flush(&mut self) -> io::Result<()> {
self.underlying.flush()
}
}
impl<W: TerminatingWrite> TerminatingWrite for CountingWriter<W> {
fn terminate_ref(&mut self, token: AntiCallToken) -> io::Result<()> {
self.flush()?;
self.underlying.terminate_ref(token)
}
}
#[cfg(test)]
mod test {
@@ -48,8 +63,8 @@ mod test {
let mut counting_writer = CountingWriter::wrap(buffer);
let bytes = (0u8..10u8).collect::<Vec<u8>>();
counting_writer.write_all(&bytes).unwrap();
let (w, len): (Vec<u8>, usize) = counting_writer.finish().unwrap();
assert_eq!(len, 10);
let (w, len): (Vec<u8>, u64) = counting_writer.finish().unwrap();
assert_eq!(len, 10u64);
assert_eq!(w.len(), 10);
}
}

114
src/common/mod.rs
View File

@@ -10,10 +10,28 @@ pub(crate) use self::bitset::TinySet;
pub(crate) use self::composite_file::{CompositeFile, CompositeWrite};
pub use self::counting_writer::CountingWriter;
pub use self::serialize::{BinarySerializable, FixedSize};
pub use self::vint::VInt;
pub use self::vint::{
read_u32_vint, read_u32_vint_no_advance, serialize_vint_u32, write_u32_vint, VInt,
};
pub use byteorder::LittleEndian as Endianness;
use std::io;
/// Segment's max doc must be `< MAX_DOC_LIMIT`.
///
/// We do not allow segments with more than
pub const MAX_DOC_LIMIT: u32 = 1 << 31;
pub fn minmax<I, T>(mut vals: I) -> Option<(T, T)>
where
I: Iterator<Item = T>,
T: Copy + Ord,
{
if let Some(first_el) = vals.next() {
return Some(vals.fold((first_el, first_el), |(min_val, max_val), el| {
(min_val.min(el), max_val.max(el))
}));
}
None
}
/// Computes the number of bits that will be used for bitpacking.
///
@@ -52,11 +70,6 @@ pub(crate) fn is_power_of_2(n: usize) -> bool {
(n > 0) && (n & (n - 1) == 0)
}
/// Create a default io error given a string.
pub(crate) fn make_io_err(msg: String) -> io::Error {
io::Error::new(io::ErrorKind::Other, msg)
}
/// Has length trait
pub trait HasLen {
/// Return length
@@ -101,16 +114,54 @@ pub fn u64_to_i64(val: u64) -> i64 {
(val ^ HIGHEST_BIT) as i64
}
/// Maps a `f64` to `u64`
///
/// For simplicity, tantivy internally handles `f64` as `u64`.
/// The mapping is defined by this function.
///
/// Maps `f64` to `u64` so that lexical order is preserved.
///
/// This is more suited than simply casting (`val as u64`)
/// which would truncate the result
///
/// # See also
/// The [reverse mapping is `u64_to_f64`](./fn.u64_to_f64.html).
#[inline(always)]
pub fn f64_to_u64(val: f64) -> u64 {
let bits = val.to_bits();
if val.is_sign_positive() {
bits ^ HIGHEST_BIT
} else {
!bits
}
}
/// Reverse the mapping given by [`i64_to_u64`](./fn.i64_to_u64.html).
#[inline(always)]
pub fn u64_to_f64(val: u64) -> f64 {
f64::from_bits(if val & HIGHEST_BIT != 0 {
val ^ HIGHEST_BIT
} else {
!val
})
}
#[cfg(test)]
pub(crate) mod test {
pub use super::minmax;
pub use super::serialize::test::fixed_size_test;
use super::{compute_num_bits, i64_to_u64, u64_to_i64};
use super::{compute_num_bits, f64_to_u64, i64_to_u64, u64_to_f64, u64_to_i64};
use std::f64;
fn test_i64_converter_helper(val: i64) {
assert_eq!(u64_to_i64(i64_to_u64(val)), val);
}
fn test_f64_converter_helper(val: f64) {
assert_eq!(u64_to_f64(f64_to_u64(val)), val);
}
#[test]
fn test_i64_converter() {
assert_eq!(i64_to_u64(i64::min_value()), u64::min_value());
@@ -123,6 +174,29 @@ pub(crate) mod test {
}
}
#[test]
fn test_f64_converter() {
test_f64_converter_helper(f64::INFINITY);
test_f64_converter_helper(f64::NEG_INFINITY);
test_f64_converter_helper(0.0);
test_f64_converter_helper(-0.0);
test_f64_converter_helper(1.0);
test_f64_converter_helper(-1.0);
}
#[test]
fn test_f64_order() {
assert!(!(f64_to_u64(f64::NEG_INFINITY)..f64_to_u64(f64::INFINITY))
.contains(&f64_to_u64(f64::NAN))); //nan is not a number
assert!(f64_to_u64(1.5) > f64_to_u64(1.0)); //same exponent, different mantissa
assert!(f64_to_u64(2.0) > f64_to_u64(1.0)); //same mantissa, different exponent
assert!(f64_to_u64(2.0) > f64_to_u64(1.5)); //different exponent and mantissa
assert!(f64_to_u64(1.0) > f64_to_u64(-1.0)); // pos > neg
assert!(f64_to_u64(-1.5) < f64_to_u64(-1.0));
assert!(f64_to_u64(-2.0) < f64_to_u64(1.0));
assert!(f64_to_u64(-2.0) < f64_to_u64(-1.5));
}
#[test]
fn test_compute_num_bits() {
assert_eq!(compute_num_bits(1), 1u8);
@@ -134,4 +208,28 @@ pub(crate) mod test {
assert_eq!(compute_num_bits(256), 9u8);
assert_eq!(compute_num_bits(5_000_000_000), 33u8);
}
#[test]
fn test_max_doc() {
// this is the first time I write a unit test for a constant.
assert!(((super::MAX_DOC_LIMIT - 1) as i32) >= 0);
assert!((super::MAX_DOC_LIMIT as i32) < 0);
}
#[test]
fn test_minmax_empty() {
let vals: Vec<u32> = vec![];
assert_eq!(minmax(vals.into_iter()), None);
}
#[test]
fn test_minmax_one() {
assert_eq!(minmax(vec![1].into_iter()), Some((1, 1)));
}
#[test]
fn test_minmax_two() {
assert_eq!(minmax(vec![1, 2].into_iter()), Some((1, 2)));
assert_eq!(minmax(vec![2, 1].into_iter()), Some((1, 2)));
}
}

42
src/common/serialize.rs
View File

@@ -1,6 +1,6 @@
use crate::common::Endianness;
use crate::common::VInt;
use byteorder::{ReadBytesExt, WriteBytesExt};
use common::Endianness;
use common::VInt;
use std::fmt;
use std::io;
use std::io::Read;
@@ -89,6 +89,19 @@ impl FixedSize for u64 {
const SIZE_IN_BYTES: usize = 8;
}
impl BinarySerializable for f32 {
fn serialize<W: Write>(&self, writer: &mut W) -> io::Result<()> {
writer.write_f32::<Endianness>(*self)
}
fn deserialize<R: Read>(reader: &mut R) -> io::Result<Self> {
reader.read_f32::<Endianness>()
}
}
impl FixedSize for f32 {
const SIZE_IN_BYTES: usize = 4;
}
impl BinarySerializable for i64 {
fn serialize<W: Write>(&self, writer: &mut W) -> io::Result<()> {
writer.write_i64::<Endianness>(*self)
@@ -102,6 +115,19 @@ impl FixedSize for i64 {
const SIZE_IN_BYTES: usize = 8;
}
impl BinarySerializable for f64 {
fn serialize<W: Write>(&self, writer: &mut W) -> io::Result<()> {
writer.write_f64::<Endianness>(*self)
}
fn deserialize<R: Read>(reader: &mut R) -> io::Result<Self> {
reader.read_f64::<Endianness>()
}
}
impl FixedSize for f64 {
const SIZE_IN_BYTES: usize = 8;
}
impl BinarySerializable for u8 {
fn serialize<W: Write>(&self, writer: &mut W) -> io::Result<()> {
writer.write_u8(*self)
@@ -136,7 +162,7 @@ impl BinarySerializable for String {
pub mod test {
use super::*;
use common::VInt;
use crate::common::VInt;
pub fn fixed_size_test<O: BinarySerializable + FixedSize + Default>() {
let mut buffer = Vec::new();
@@ -172,6 +198,11 @@ pub mod test {
fixed_size_test::<i64>();
}
#[test]
fn test_serialize_f64() {
fixed_size_test::<f64>();
}
#[test]
fn test_serialize_u64() {
fixed_size_test::<u64>();
@@ -181,10 +212,7 @@ pub mod test {
fn test_serialize_string() {
assert_eq!(serialize_test(String::from("")), 1);
assert_eq!(serialize_test(String::from("ぽよぽよ")), 1 + 3 * 4);
assert_eq!(
serialize_test(String::from("富士さん見える。")),
1 + 3 * 8
);
assert_eq!(serialize_test(String::from("富士さん見える。")), 1 + 3 * 8);
}
#[test]

213
src/common/vint.rs
View File

@@ -1,12 +1,114 @@
use super::BinarySerializable;
use byteorder::{ByteOrder, LittleEndian};
use std::io;
use std::io::Read;
use std::io::Write;
/// Wrapper over a `u64` that serializes as a variable int.
#[derive(Debug, Eq, PartialEq)]
#[derive(Clone, Copy, Debug, Eq, PartialEq)]
pub struct VInt(pub u64);
const STOP_BIT: u8 = 128;
pub fn serialize_vint_u32(val: u32, buf: &mut [u8; 8]) -> &[u8] {
const START_2: u64 = 1 << 7;
const START_3: u64 = 1 << 14;
const START_4: u64 = 1 << 21;
const START_5: u64 = 1 << 28;
const STOP_1: u64 = START_2 - 1;
const STOP_2: u64 = START_3 - 1;
const STOP_3: u64 = START_4 - 1;
const STOP_4: u64 = START_5 - 1;
const MASK_1: u64 = 127;
const MASK_2: u64 = MASK_1 << 7;
const MASK_3: u64 = MASK_2 << 7;
const MASK_4: u64 = MASK_3 << 7;
const MASK_5: u64 = MASK_4 << 7;
let val = u64::from(val);
const STOP_BIT: u64 = 128u64;
let (res, num_bytes) = match val {
0..=STOP_1 => (val | STOP_BIT, 1),
START_2..=STOP_2 => (
(val & MASK_1) | ((val & MASK_2) << 1) | (STOP_BIT << (8)),
2,
),
START_3..=STOP_3 => (
(val & MASK_1) | ((val & MASK_2) << 1) | ((val & MASK_3) << 2) | (STOP_BIT << (8 * 2)),
3,
),
START_4..=STOP_4 => (
(val & MASK_1)
| ((val & MASK_2) << 1)
| ((val & MASK_3) << 2)
| ((val & MASK_4) << 3)
| (STOP_BIT << (8 * 3)),
4,
),
_ => (
(val & MASK_1)
| ((val & MASK_2) << 1)
| ((val & MASK_3) << 2)
| ((val & MASK_4) << 3)
| ((val & MASK_5) << 4)
| (STOP_BIT << (8 * 4)),
5,
),
};
LittleEndian::write_u64(&mut buf[..], res);
&buf[0..num_bytes]
}
/// Returns the number of bytes covered by a
/// serialized vint `u32`.
///
/// Expects a buffer data that starts
/// by the serialized `vint`, scans at most 5 bytes ahead until
/// it finds the vint final byte.
///
/// # May Panic
/// If the payload does not start by a valid `vint`
fn vint_len(data: &[u8]) -> usize {
for (i, &val) in data.iter().enumerate().take(5) {
if val >= STOP_BIT {
return i + 1;
}
}
panic!("Corrupted data. Invalid VInt 32");
}
/// Reads a vint `u32` from a buffer, and
/// consumes its payload data.
///
/// # Panics
///
/// If the buffer does not start by a valid
/// vint payload
pub fn read_u32_vint(data: &mut &[u8]) -> u32 {
let (result, vlen) = read_u32_vint_no_advance(*data);
*data = &data[vlen..];
result
}
pub fn read_u32_vint_no_advance(data: &[u8]) -> (u32, usize) {
let vlen = vint_len(data);
let mut result = 0u32;
let mut shift = 0u64;
for &b in &data[..vlen] {
result |= u32::from(b & 127u8) << shift;
shift += 7;
}
(result, vlen)
}
/// Write a `u32` as a vint payload.
pub fn write_u32_vint<W: io::Write>(val: u32, writer: &mut W) -> io::Result<()> {
let mut buf = [0u8; 8];
let data = serialize_vint_u32(val, &mut buf);
writer.write_all(&data)
}
impl VInt {
pub fn val(&self) -> u64 {
self.0
@@ -15,24 +117,34 @@ impl VInt {
pub fn deserialize_u64<R: Read>(reader: &mut R) -> io::Result<u64> {
VInt::deserialize(reader).map(|vint| vint.0)
}
pub fn serialize_into_vec(&self, output: &mut Vec<u8>) {
let mut buffer = [0u8; 10];
let num_bytes = self.serialize_into(&mut buffer);
output.extend(&buffer[0..num_bytes]);
}
pub fn serialize_into(&self, buffer: &mut [u8; 10]) -> usize {
let mut remaining = self.0;
for (i, b) in buffer.iter_mut().enumerate() {
let next_byte: u8 = (remaining % 128u64) as u8;
remaining /= 128u64;
if remaining == 0u64 {
*b = next_byte | STOP_BIT;
return i + 1;
} else {
*b = next_byte;
}
}
unreachable!();
}
}
impl BinarySerializable for VInt {
fn serialize<W: Write>(&self, writer: &mut W) -> io::Result<()> {
let mut remaining = self.0;
let mut buffer = [0u8; 10];
let mut i = 0;
loop {
let next_byte: u8 = (remaining % 128u64) as u8;
remaining /= 128u64;
if remaining == 0u64 {
buffer[i] = next_byte | 128u8;
return writer.write_all(&buffer[0..i + 1]);
} else {
buffer[i] = next_byte;
}
i += 1;
}
let num_bytes = self.serialize_into(&mut buffer);
writer.write_all(&buffer[0..num_bytes])
}
fn deserialize<R: Read>(reader: &mut R) -> io::Result<Self> {
@@ -42,20 +154,81 @@ impl BinarySerializable for VInt {
loop {
match bytes.next() {
Some(Ok(b)) => {
result += u64::from(b % 128u8) << shift;
if b & 128u8 != 0u8 {
break;
result |= u64::from(b % 128u8) << shift;
if b >= STOP_BIT {
return Ok(VInt(result));
}
shift += 7;
}
_ => {
return Err(io::Error::new(
io::ErrorKind::InvalidData,
"Reach end of buffer",
))
"Reach end of buffer while reading VInt",
));
}
}
}
Ok(VInt(result))
}
}
#[cfg(test)]
mod tests {
use super::serialize_vint_u32;
use super::VInt;
use crate::common::BinarySerializable;
fn aux_test_vint(val: u64) {
let mut v = [14u8; 10];
let num_bytes = VInt(val).serialize_into(&mut v);
for i in num_bytes..10 {
assert_eq!(v[i], 14u8);
}
assert!(num_bytes > 0);
if num_bytes < 10 {
assert!(1u64 << (7 * num_bytes) > val);
}
if num_bytes > 1 {
assert!(1u64 << (7 * (num_bytes - 1)) <= val);
}
let serdeser_val = VInt::deserialize(&mut &v[..]).unwrap();
assert_eq!(val, serdeser_val.0);
}
#[test]
fn test_vint() {
aux_test_vint(0);
aux_test_vint(1);
aux_test_vint(5);
aux_test_vint(u64::max_value());
for i in 1..9 {
let power_of_128 = 1u64 << (7 * i);
aux_test_vint(power_of_128 - 1u64);
aux_test_vint(power_of_128);
aux_test_vint(power_of_128 + 1u64);
}
aux_test_vint(10);
}
fn aux_test_serialize_vint_u32(val: u32) {
let mut buffer = [0u8; 10];
let mut buffer2 = [0u8; 8];
let len_vint = VInt(val as u64).serialize_into(&mut buffer);
let res2 = serialize_vint_u32(val, &mut buffer2);
assert_eq!(&buffer[..len_vint], res2, "array wrong for {}", val);
}
#[test]
fn test_vint_u32() {
aux_test_serialize_vint_u32(0);
aux_test_serialize_vint_u32(1);
aux_test_serialize_vint_u32(5);
for i in 1..3 {
let power_of_128 = 1u32 << (7 * i);
aux_test_serialize_vint_u32(power_of_128 - 1u32);
aux_test_serialize_vint_u32(power_of_128);
aux_test_serialize_vint_u32(power_of_128 + 1u32);
}
aux_test_serialize_vint_u32(u32::max_value());
}
}

160
src/compression/stream.rs
View File

@@ -1,160 +0,0 @@
use compression::compressed_block_size;
use compression::BlockDecoder;
use compression::COMPRESSION_BLOCK_SIZE;
use directory::ReadOnlySource;
use owned_read::OwnedRead;
/// Reads a stream of compressed ints.
///
/// Tantivy uses `CompressedIntStream` to read
/// the position file.
/// The `.skip(...)` makes it possible to avoid
/// decompressing blocks that are not required.
pub struct CompressedIntStream {
buffer: OwnedRead,
block_decoder: BlockDecoder,
cached_addr: usize, // address of the currently decoded block
cached_next_addr: usize, // address following the currently decoded block
addr: usize, // address of the block associated to the current position
inner_offset: usize,
}
impl CompressedIntStream {
/// Opens a compressed int stream.
pub(crate) fn wrap(source: ReadOnlySource) -> CompressedIntStream {
CompressedIntStream {
buffer: OwnedRead::new(source),
block_decoder: BlockDecoder::new(),
cached_addr: usize::max_value(),
cached_next_addr: usize::max_value(),
addr: 0,
inner_offset: 0,
}
}
/// Loads the block at the given address and return the address of the
/// following block
pub fn read_block(&mut self, addr: usize) -> usize {
if self.cached_addr == addr {
// we are already on this block.
// no need to read.
self.cached_next_addr
} else {
let next_addr = addr + self.block_decoder
.uncompress_block_unsorted(self.buffer.slice_from(addr));
self.cached_addr = addr;
self.cached_next_addr = next_addr;
next_addr
}
}
/// Fills a buffer with the next `output.len()` integers.
/// This does not consume / advance the stream.
pub fn read(&mut self, output: &mut [u32]) {
let mut cursor = self.addr;
let mut inner_offset = self.inner_offset;
let mut num_els: usize = output.len();
let mut start = 0;
loop {
cursor = self.read_block(cursor);
let block = &self.block_decoder.output_array()[inner_offset..];
let block_len = block.len();
if num_els >= block_len {
output[start..start + block_len].clone_from_slice(&block);
start += block_len;
num_els -= block_len;
inner_offset = 0;
} else {
output[start..].clone_from_slice(&block[..num_els]);
break;
}
}
}
/// Skip the next `skip_len` integer.
///
/// If a full block is skipped, calling
/// `.skip(...)` will avoid decompressing it.
///
/// May panic if the end of the stream is reached.
pub fn skip(&mut self, mut skip_len: usize) {
loop {
let available = COMPRESSION_BLOCK_SIZE - self.inner_offset;
if available >= skip_len {
self.inner_offset += skip_len;
break;
} else {
skip_len -= available;
// entirely skip decompressing some blocks.
let num_bits: u8 = self.buffer.get(self.addr);
let block_len = compressed_block_size(num_bits);
self.addr += block_len;
self.inner_offset = 0;
}
}
}
}
#[cfg(test)]
pub mod tests {
use super::CompressedIntStream;
use compression::compressed_block_size;
use compression::BlockEncoder;
use compression::COMPRESSION_BLOCK_SIZE;
use directory::ReadOnlySource;
fn create_stream_buffer() -> ReadOnlySource {
let mut buffer: Vec<u8> = vec![];
let mut encoder = BlockEncoder::new();
let vals: Vec<u32> = (0u32..1152u32).collect();
for chunk in vals.chunks(COMPRESSION_BLOCK_SIZE) {
let compressed_block = encoder.compress_block_unsorted(chunk);
let num_bits = compressed_block[0];
assert_eq!(compressed_block_size(num_bits), compressed_block.len());
buffer.extend_from_slice(compressed_block);
}
if cfg!(simd) {
buffer.extend_from_slice(&[0u8; 7]);
}
ReadOnlySource::from(buffer)
}
#[test]
fn test_compressed_int_stream() {
let buffer = create_stream_buffer();
let mut stream = CompressedIntStream::wrap(buffer);
let mut block: [u32; COMPRESSION_BLOCK_SIZE] = [0u32; COMPRESSION_BLOCK_SIZE];
stream.read(&mut block[0..2]);
assert_eq!(block[0], 0);
assert_eq!(block[1], 1);
// reading does not consume the stream
stream.read(&mut block[0..2]);
assert_eq!(block[0], 0);
assert_eq!(block[1], 1);
stream.skip(2);
stream.skip(5);
stream.read(&mut block[0..3]);
stream.skip(3);
assert_eq!(block[0], 7);
assert_eq!(block[1], 8);
assert_eq!(block[2], 9);
stream.skip(500);
stream.read(&mut block[0..3]);
stream.skip(3);
assert_eq!(block[0], 510);
assert_eq!(block[1], 511);
assert_eq!(block[2], 512);
stream.skip(511);
stream.read(&mut block[..1]);
assert_eq!(block[0], 1024);
}
}

141
src/core/executor.rs Normal file
View File

@@ -0,0 +1,141 @@
use crossbeam::channel;
use rayon::{ThreadPool, ThreadPoolBuilder};
/// Search executor whether search request are single thread or multithread.
///
/// We don't expose Rayon thread pool directly here for several reasons.
///
/// First dependency hell. It is not a good idea to expose the
/// API of a dependency, knowing it might conflict with a different version
/// used by the client. Second, we may stop using rayon in the future.
pub enum Executor {
/// Single thread variant of an Executor
SingleThread,
/// Thread pool variant of an Executor
ThreadPool(ThreadPool),
}
impl Executor {
/// Creates an Executor that performs all task in the caller thread.
pub fn single_thread() -> Executor {
Executor::SingleThread
}
/// Creates an Executor that dispatches the tasks in a thread pool.
pub fn multi_thread(num_threads: usize, prefix: &'static str) -> crate::Result<Executor> {
let pool = ThreadPoolBuilder::new()
.num_threads(num_threads)
.thread_name(move |num| format!("{}{}", prefix, num))
.build()?;
Ok(Executor::ThreadPool(pool))
}
/// Perform a map in the thread pool.
///
/// Regardless of the executor (`SingleThread` or `ThreadPool`), panics in the task
/// will propagate to the caller.
pub fn map<
A: Send,
R: Send,
AIterator: Iterator<Item = A>,
F: Sized + Sync + Fn(A) -> crate::Result<R>,
>(
&self,
f: F,
args: AIterator,
) -> crate::Result<Vec<R>> {
match self {
Executor::SingleThread => args.map(f).collect::<crate::Result<_>>(),
Executor::ThreadPool(pool) => {
let args_with_indices: Vec<(usize, A)> = args.enumerate().collect();
let num_fruits = args_with_indices.len();
let fruit_receiver = {
let (fruit_sender, fruit_receiver) = channel::unbounded();
pool.scope(|scope| {
for arg_with_idx in args_with_indices {
scope.spawn(|_| {
let (idx, arg) = arg_with_idx;
let fruit = f(arg);
if let Err(err) = fruit_sender.send((idx, fruit)) {
error!("Failed to send search task. It probably means all search threads have panicked. {:?}", err);
}
});
}
});
fruit_receiver
// This ends the scope of fruit_sender.
// This is important as it makes it possible for the fruit_receiver iteration to
// terminate.
};
// This is lame, but safe.
let mut results_with_position = Vec::with_capacity(num_fruits);
for (pos, fruit_res) in fruit_receiver {
let fruit = fruit_res?;
results_with_position.push((pos, fruit));
}
results_with_position.sort_by_key(|(pos, _)| *pos);
assert_eq!(results_with_position.len(), num_fruits);
Ok(results_with_position
.into_iter()
.map(|(_, fruit)| fruit)
.collect::<Vec<_>>())
}
}
}
}
#[cfg(test)]
mod tests {
use super::Executor;
#[test]
#[should_panic(expected = "panic should propagate")]
fn test_panic_propagates_single_thread() {
let _result: Vec<usize> = Executor::single_thread()
.map(
|_| {
panic!("panic should propagate");
},
vec![0].into_iter(),
)
.unwrap();
}
#[test]
#[should_panic] //< unfortunately the panic message is not propagated
fn test_panic_propagates_multi_thread() {
let _result: Vec<usize> = Executor::multi_thread(1, "search-test")
.unwrap()
.map(
|_| {
panic!("panic should propagate");
},
vec![0].into_iter(),
)
.unwrap();
}
#[test]
fn test_map_singlethread() {
let result: Vec<usize> = Executor::single_thread()
.map(|i| Ok(i * 2), 0..1_000)
.unwrap();
assert_eq!(result.len(), 1_000);
for i in 0..1_000 {
assert_eq!(result[i], i * 2);
}
}
#[test]
fn test_map_multithread() {
let result: Vec<usize> = Executor::multi_thread(3, "search-test")
.unwrap()
.map(|i| Ok(i * 2), 0..10)
.unwrap();
assert_eq!(result.len(), 10);
for i in 0..10 {
assert_eq!(result[i], i * 2);
}
}
}

527
src/core/index.rs
View File

@@ -1,51 +1,91 @@
use core::SegmentId;
use error::{ErrorKind, ResultExt};
use schema::Schema;
use serde_json;
use std::borrow::BorrowMut;
use std::fmt;
use std::sync::Arc;
use Result;
use super::pool::LeasedItem;
use super::pool::Pool;
use super::segment::create_segment;
use super::segment::Segment;
use core::searcher::Searcher;
use core::IndexMeta;
use core::SegmentMeta;
use core::SegmentReader;
use core::META_FILEPATH;
use directory::ManagedDirectory;
use crate::core::Executor;
use crate::core::IndexMeta;
use crate::core::SegmentId;
use crate::core::SegmentMeta;
use crate::core::SegmentMetaInventory;
use crate::core::META_FILEPATH;
use crate::directory::ManagedDirectory;
#[cfg(feature = "mmap")]
use crate::directory::MmapDirectory;
use crate::directory::INDEX_WRITER_LOCK;
use crate::directory::{Directory, RAMDirectory};
use crate::error::DataCorruption;
use crate::error::TantivyError;
use crate::indexer::index_writer::HEAP_SIZE_MIN;
use crate::indexer::segment_updater::save_new_metas;
use crate::reader::IndexReader;
use crate::reader::IndexReaderBuilder;
use crate::schema::Field;
use crate::schema::FieldType;
use crate::schema::Schema;
use crate::tokenizer::{TextAnalyzer, TokenizerManager};
use crate::IndexWriter;
use std::borrow::BorrowMut;
use std::collections::HashSet;
use std::fmt;
#[cfg(feature = "mmap")]
use directory::MmapDirectory;
use directory::{Directory, RAMDirectory};
use indexer::index_writer::open_index_writer;
use indexer::index_writer::HEAP_SIZE_MIN;
use indexer::segment_updater::save_new_metas;
use indexer::DirectoryLock;
use num_cpus;
use std::path::Path;
use tokenizer::TokenizerManager;
use IndexWriter;
use std::path::PathBuf;
use std::sync::Arc;
const NUM_SEARCHERS: usize = 12;
fn load_metas(directory: &Directory) -> Result<IndexMeta> {
fn load_metas(
directory: &dyn Directory,
inventory: &SegmentMetaInventory,
) -> crate::Result<IndexMeta> {
let meta_data = directory.atomic_read(&META_FILEPATH)?;
let meta_string = String::from_utf8_lossy(&meta_data);
serde_json::from_str(&meta_string).chain_err(|| ErrorKind::CorruptedFile(META_FILEPATH.clone()))
IndexMeta::deserialize(&meta_string, &inventory)
.map_err(|e| {
DataCorruption::new(
META_FILEPATH.to_path_buf(),
format!("Meta file cannot be deserialized. {:?}.", e),
)
})
.map_err(From::from)
}
/// Search Index
#[derive(Clone)]
pub struct Index {
directory: ManagedDirectory,
schema: Schema,
searcher_pool: Arc<Pool<Searcher>>,
executor: Arc<Executor>,
tokenizers: TokenizerManager,
inventory: SegmentMetaInventory,
}
impl Index {
/// Examines the director to see if it contains an index
pub fn exists<Dir: Directory>(dir: &Dir) -> bool {
dir.exists(&META_FILEPATH)
}
/// Accessor to the search executor.
///
/// This pool is used by default when calling `searcher.search(...)`
/// to perform search on the individual segments.
///
/// By default the executor is single thread, and simply runs in the calling thread.
pub fn search_executor(&self) -> &Executor {
self.executor.as_ref()
}
/// Replace the default single thread search executor pool
/// by a thread pool with a given number of threads.
pub fn set_multithread_executor(&mut self, num_threads: usize) -> crate::Result<()> {
self.executor = Arc::new(Executor::multi_thread(num_threads, "thrd-tantivy-search-")?);
Ok(())
}
/// Replace the default single thread search executor pool
/// by a thread pool with a given number of threads.
pub fn set_default_multithread_executor(&mut self) -> crate::Result<()> {
let default_num_threads = num_cpus::get();
self.set_multithread_executor(default_num_threads)
}
/// Creates a new index using the `RAMDirectory`.
///
/// The index will be allocated in anonymous memory.
@@ -60,11 +100,32 @@ impl Index {
///
/// If a previous index was in this directory, then its meta file will be destroyed.
#[cfg(feature = "mmap")]
pub fn create_in_dir<P: AsRef<Path>>(directory_path: P, schema: Schema) -> Result<Index> {
pub fn create_in_dir<P: AsRef<Path>>(
directory_path: P,
schema: Schema,
) -> crate::Result<Index> {
let mmap_directory = MmapDirectory::open(directory_path)?;
if Index::exists(&mmap_directory) {
return Err(TantivyError::IndexAlreadyExists);
}
Index::create(mmap_directory, schema)
}
/// Opens or creates a new index in the provided directory
pub fn open_or_create<Dir: Directory>(dir: Dir, schema: Schema) -> crate::Result<Index> {
if !Index::exists(&dir) {
return Index::create(dir, schema);
}
let index = Index::open(dir)?;
if index.schema() == schema {
Ok(index)
} else {
Err(TantivyError::SchemaError(
"An index exists but the schema does not match.".to_string(),
))
}
}
/// Creates a new index in a temp directory.
///
/// The index will use the `MMapDirectory` in a newly created directory.
@@ -74,35 +135,40 @@ impl Index {
/// The temp directory is only used for testing the `MmapDirectory`.
/// For other unit tests, prefer the `RAMDirectory`, see: `create_in_ram`.
#[cfg(feature = "mmap")]
pub fn create_from_tempdir(schema: Schema) -> Result<Index> {
pub fn create_from_tempdir(schema: Schema) -> crate::Result<Index> {
let mmap_directory = MmapDirectory::create_from_tempdir()?;
Index::create(mmap_directory, schema)
}
/// Creates a new index given an implementation of the trait `Directory`
pub fn create<Dir: Directory>(dir: Dir, schema: Schema) -> Result<Index> {
let directory = ManagedDirectory::new(dir)?;
pub fn create<Dir: Directory>(dir: Dir, schema: Schema) -> crate::Result<Index> {
let directory = ManagedDirectory::wrap(dir)?;
Index::from_directory(directory, schema)
}
/// Create a new index from a directory.
fn from_directory(mut directory: ManagedDirectory, schema: Schema) -> Result<Index> {
save_new_metas(schema.clone(), 0, directory.borrow_mut())?;
///
/// This will overwrite existing meta.json
fn from_directory(mut directory: ManagedDirectory, schema: Schema) -> crate::Result<Index> {
save_new_metas(schema.clone(), directory.borrow_mut())?;
let metas = IndexMeta::with_schema(schema);
Index::create_from_metas(directory, &metas)
Index::create_from_metas(directory, &metas, SegmentMetaInventory::default())
}
/// Creates a new index given a directory and an `IndexMeta`.
fn create_from_metas(directory: ManagedDirectory, metas: &IndexMeta) -> Result<Index> {
fn create_from_metas(
directory: ManagedDirectory,
metas: &IndexMeta,
inventory: SegmentMetaInventory,
) -> crate::Result<Index> {
let schema = metas.schema.clone();
let index = Index {
Ok(Index {
directory,
schema,
searcher_pool: Arc::new(Pool::new()),
tokenizers: TokenizerManager::default(),
};
index.load_searchers()?;
Ok(index)
executor: Arc::new(Executor::single_thread()),
inventory,
})
}
/// Accessor for the tokenizer manager.
@@ -110,23 +176,79 @@ impl Index {
&self.tokenizers
}
/// Helper to access the tokenizer associated to a specific field.
pub fn tokenizer_for_field(&self, field: Field) -> crate::Result<TextAnalyzer> {
let field_entry = self.schema.get_field_entry(field);
let field_type = field_entry.field_type();
let tokenizer_manager: &TokenizerManager = self.tokenizers();
let tokenizer_name_opt: Option<TextAnalyzer> = match field_type {
FieldType::Str(text_options) => text_options
.get_indexing_options()
.map(|text_indexing_options| text_indexing_options.tokenizer().to_string())
.and_then(|tokenizer_name| tokenizer_manager.get(&tokenizer_name)),
_ => None,
};
match tokenizer_name_opt {
Some(tokenizer) => Ok(tokenizer),
None => Err(TantivyError::SchemaError(format!(
"{:?} is not a text field.",
field_entry.name()
))),
}
}
/// Create a default `IndexReader` for the given index.
///
/// See [`Index.reader_builder()`](#method.reader_builder).
pub fn reader(&self) -> crate::Result<IndexReader> {
self.reader_builder().try_into()
}
/// Create a `IndexReader` for the given index.
///
/// Most project should create at most one reader for a given index.
/// This method is typically called only once per `Index` instance,
/// over the lifetime of most problem.
pub fn reader_builder(&self) -> IndexReaderBuilder {
IndexReaderBuilder::new(self.clone())
}
/// Opens a new directory from an index path.
#[cfg(feature = "mmap")]
pub fn open_in_dir<P: AsRef<Path>>(directory_path: P) -> Result<Index> {
pub fn open_in_dir<P: AsRef<Path>>(directory_path: P) -> crate::Result<Index> {
let mmap_directory = MmapDirectory::open(directory_path)?;
Index::open(mmap_directory)
}
/// Returns the list of the segment metas tracked by the index.
///
/// Such segments can of course be part of the index,
/// but also they could be segments being currently built or in the middle of a merge
/// operation.
pub fn list_all_segment_metas(&self) -> Vec<SegmentMeta> {
self.inventory.all()
}
/// Creates a new segment_meta (Advanced user only).
///
/// As long as the `SegmentMeta` lives, the files associated with the
/// `SegmentMeta` are guaranteed to not be garbage collected, regardless of
/// whether the segment is recorded as part of the index or not.
pub fn new_segment_meta(&self, segment_id: SegmentId, max_doc: u32) -> SegmentMeta {
self.inventory.new_segment_meta(segment_id, max_doc)
}
/// Open the index using the provided directory
pub fn open<D: Directory>(directory: D) -> Result<Index> {
let directory = ManagedDirectory::new(directory)?;
let metas = load_metas(&directory)?;
Index::create_from_metas(directory, &metas)
pub fn open<D: Directory>(directory: D) -> crate::Result<Index> {
let directory = ManagedDirectory::wrap(directory)?;
let inventory = SegmentMetaInventory::default();
let metas = load_metas(&directory, &inventory)?;
Index::create_from_metas(directory, &metas, inventory)
}
/// Reads the index meta file from the directory.
pub fn load_metas(&self) -> Result<IndexMeta> {
load_metas(self.directory())
pub fn load_metas(&self) -> crate::Result<IndexMeta> {
load_metas(self.directory(), &self.inventory)
}
/// Open a new index writer. Attempts to acquire a lockfile.
@@ -145,17 +267,32 @@ impl Index {
/// Each thread will receive a budget of `overall_heap_size_in_bytes / num_threads`.
///
/// # Errors
/// If the lockfile already exists, returns `Error::FileAlreadyExists`.
/// If the lockfile already exists, returns `Error::DirectoryLockBusy` or an `Error::IOError`.
///
/// # Panics
/// If the heap size per thread is too small, panics.
pub fn writer_with_num_threads(
&self,
num_threads: usize,
overall_heap_size_in_bytes: usize,
) -> Result<IndexWriter> {
let directory_lock = DirectoryLock::lock(self.directory().box_clone())?;
) -> crate::Result<IndexWriter> {
let directory_lock = self
.directory
.acquire_lock(&INDEX_WRITER_LOCK)
.map_err(|err| {
TantivyError::LockFailure(
err,
Some(
"Failed to acquire index lock. If you are using \
a regular directory, this means there is already an \
`IndexWriter` working on this `Directory`, in this process \
or in a different process."
.to_string(),
),
)
})?;
let heap_size_in_bytes_per_thread = overall_heap_size_in_bytes / num_threads;
open_index_writer(
IndexWriter::new(
self,
num_threads,
heap_size_in_bytes_per_thread,
@@ -173,7 +310,7 @@ impl Index {
/// If the lockfile already exists, returns `Error::FileAlreadyExists`.
/// # Panics
/// If the heap size per thread is too small, panics.
pub fn writer(&self, overall_heap_size_in_bytes: usize) -> Result<IndexWriter> {
pub fn writer(&self, overall_heap_size_in_bytes: usize) -> crate::Result<IndexWriter> {
let mut num_threads = num_cpus::get();
let heap_size_in_bytes_per_thread = overall_heap_size_in_bytes / num_threads;
if heap_size_in_bytes_per_thread < HEAP_SIZE_MIN {
@@ -190,8 +327,9 @@ impl Index {
}
/// Returns the list of segments that are searchable
pub fn searchable_segments(&self) -> Result<Vec<Segment>> {
Ok(self.searchable_segment_metas()?
pub fn searchable_segments(&self) -> crate::Result<Vec<Segment>> {
Ok(self
.searchable_segment_metas()?
.into_iter()
.map(|segment_meta| self.segment(segment_meta))
.collect())
@@ -199,12 +337,14 @@ impl Index {
#[doc(hidden)]
pub fn segment(&self, segment_meta: SegmentMeta) -> Segment {
create_segment(self.clone(), segment_meta)
Segment::for_index(self.clone(), segment_meta)
}
/// Creates a new segment.
pub fn new_segment(&self) -> Segment {
let segment_meta = SegmentMeta::new(SegmentId::generate_random(), 0);
let segment_meta = self
.inventory
.new_segment_meta(SegmentId::generate_random(), 0);
self.segment(segment_meta)
}
@@ -220,66 +360,243 @@ impl Index {
/// Reads the meta.json and returns the list of
/// `SegmentMeta` from the last commit.
pub fn searchable_segment_metas(&self) -> Result<Vec<SegmentMeta>> {
pub fn searchable_segment_metas(&self) -> crate::Result<Vec<SegmentMeta>> {
Ok(self.load_metas()?.segments)
}
/// Returns the list of segment ids that are searchable.
pub fn searchable_segment_ids(&self) -> Result<Vec<SegmentId>> {
Ok(self.searchable_segment_metas()?
pub fn searchable_segment_ids(&self) -> crate::Result<Vec<SegmentId>> {
Ok(self
.searchable_segment_metas()?
.iter()
.map(|segment_meta| segment_meta.id())
.map(SegmentMeta::id)
.collect())
}
/// Creates a new generation of searchers after
/// a change of the set of searchable indexes.
///
/// This needs to be called when a new segment has been
/// published or after a merge.
pub fn load_searchers(&self) -> Result<()> {
let searchable_segments = self.searchable_segments()?;
let segment_readers: Vec<SegmentReader> = searchable_segments
.iter()
.map(SegmentReader::open)
.collect::<Result<_>>()?;
let schema = self.schema();
let searchers = (0..NUM_SEARCHERS)
.map(|_| Searcher::new(schema.clone(), segment_readers.clone()))
.collect();
self.searcher_pool.publish_new_generation(searchers);
Ok(())
}
/// Returns a searcher
///
/// This method should be called every single time a search
/// query is performed.
/// The searchers are taken from a pool of `NUM_SEARCHERS` searchers.
/// If no searcher is available
/// this may block.
///
/// The same searcher must be used for a given query, as it ensures
/// the use of a consistent segment set.
pub fn searcher(&self) -> LeasedItem<Searcher> {
self.searcher_pool.acquire()
/// Returns the set of corrupted files
pub fn validate_checksum(&self) -> crate::Result<HashSet<PathBuf>> {
self.directory.list_damaged().map_err(Into::into)
}
}
impl fmt::Debug for Index {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "Index({:?})", self.directory)
}
}
impl Clone for Index {
fn clone(&self) -> Index {
Index {
directory: self.directory.clone(),
schema: self.schema.clone(),
searcher_pool: Arc::clone(&self.searcher_pool),
tokenizers: self.tokenizers.clone(),
#[cfg(test)]
mod tests {
use crate::directory::RAMDirectory;
use crate::schema::Field;
use crate::schema::{Schema, INDEXED, TEXT};
use crate::IndexReader;
use crate::ReloadPolicy;
use crate::{Directory, Index};
#[test]
fn test_indexer_for_field() {
let mut schema_builder = Schema::builder();
let num_likes_field = schema_builder.add_u64_field("num_likes", INDEXED);
let body_field = schema_builder.add_text_field("body", TEXT);
let schema = schema_builder.build();
let index = Index::create_in_ram(schema);
assert!(index.tokenizer_for_field(body_field).is_ok());
assert_eq!(
format!("{:?}", index.tokenizer_for_field(num_likes_field).err()),
"Some(SchemaError(\"\\\"num_likes\\\" is not a text field.\"))"
);
}
#[test]
fn test_index_exists() {
let directory = RAMDirectory::create();
assert!(!Index::exists(&directory));
assert!(Index::create(directory.clone(), throw_away_schema()).is_ok());
assert!(Index::exists(&directory));
}
#[test]
fn open_or_create_should_create() {
let directory = RAMDirectory::create();
assert!(!Index::exists(&directory));
assert!(Index::open_or_create(directory.clone(), throw_away_schema()).is_ok());
assert!(Index::exists(&directory));
}
#[test]
fn open_or_create_should_open() {
let directory = RAMDirectory::create();
assert!(Index::create(directory.clone(), throw_away_schema()).is_ok());
assert!(Index::exists(&directory));
assert!(Index::open_or_create(directory, throw_away_schema()).is_ok());
}
#[test]
fn create_should_wipeoff_existing() {
let directory = RAMDirectory::create();
assert!(Index::create(directory.clone(), throw_away_schema()).is_ok());
assert!(Index::exists(&directory));
assert!(Index::create(directory.clone(), Schema::builder().build()).is_ok());
}
#[test]
fn open_or_create_exists_but_schema_does_not_match() {
let directory = RAMDirectory::create();
assert!(Index::create(directory.clone(), throw_away_schema()).is_ok());
assert!(Index::exists(&directory));
assert!(Index::open_or_create(directory.clone(), throw_away_schema()).is_ok());
let err = Index::open_or_create(directory, Schema::builder().build());
assert_eq!(
format!("{:?}", err.unwrap_err()),
"SchemaError(\"An index exists but the schema does not match.\")"
);
}
fn throw_away_schema() -> Schema {
let mut schema_builder = Schema::builder();
let _ = schema_builder.add_u64_field("num_likes", INDEXED);
schema_builder.build()
}
#[test]
fn test_index_on_commit_reload_policy() {
let schema = throw_away_schema();
let field = schema.get_field("num_likes").unwrap();
let index = Index::create_in_ram(schema);
let reader = index
.reader_builder()
.reload_policy(ReloadPolicy::OnCommit)
.try_into()
.unwrap();
assert_eq!(reader.searcher().num_docs(), 0);
test_index_on_commit_reload_policy_aux(field, &index, &reader);
}
#[cfg(feature = "mmap")]
mod mmap_specific {
use super::*;
use crate::Directory;
use std::path::PathBuf;
use tempfile::TempDir;
#[test]
fn test_index_on_commit_reload_policy_mmap() {
let schema = throw_away_schema();
let field = schema.get_field("num_likes").unwrap();
let tempdir = TempDir::new().unwrap();
let tempdir_path = PathBuf::from(tempdir.path());
let index = Index::create_in_dir(&tempdir_path, schema).unwrap();
let reader = index
.reader_builder()
.reload_policy(ReloadPolicy::OnCommit)
.try_into()
.unwrap();
assert_eq!(reader.searcher().num_docs(), 0);
test_index_on_commit_reload_policy_aux(field, &index, &reader);
}
#[test]
fn test_index_manual_policy_mmap() {
let schema = throw_away_schema();
let field = schema.get_field("num_likes").unwrap();
let mut index = Index::create_from_tempdir(schema).unwrap();
let mut writer = index.writer_with_num_threads(1, 3_000_000).unwrap();
writer.commit().unwrap();
let reader = index
.reader_builder()
.reload_policy(ReloadPolicy::Manual)
.try_into()
.unwrap();
assert_eq!(reader.searcher().num_docs(), 0);
writer.add_document(doc!(field=>1u64));
let (sender, receiver) = crossbeam::channel::unbounded();
let _handle = index.directory_mut().watch(Box::new(move || {
let _ = sender.send(());
}));
writer.commit().unwrap();
assert!(receiver.recv().is_ok());
assert_eq!(reader.searcher().num_docs(), 0);
reader.reload().unwrap();
assert_eq!(reader.searcher().num_docs(), 1);
}
#[test]
fn test_index_on_commit_reload_policy_different_directories() {
let schema = throw_away_schema();
let field = schema.get_field("num_likes").unwrap();
let tempdir = TempDir::new().unwrap();
let tempdir_path = PathBuf::from(tempdir.path());
let write_index = Index::create_in_dir(&tempdir_path, schema).unwrap();
let read_index = Index::open_in_dir(&tempdir_path).unwrap();
let reader = read_index
.reader_builder()
.reload_policy(ReloadPolicy::OnCommit)
.try_into()
.unwrap();
assert_eq!(reader.searcher().num_docs(), 0);
test_index_on_commit_reload_policy_aux(field, &write_index, &reader);
}
}
fn test_index_on_commit_reload_policy_aux(field: Field, index: &Index, reader: &IndexReader) {
let mut reader_index = reader.index();
let (sender, receiver) = crossbeam::channel::unbounded();
let _watch_handle = reader_index.directory_mut().watch(Box::new(move || {
let _ = sender.send(());
}));
let mut writer = index.writer_with_num_threads(1, 3_000_000).unwrap();
assert_eq!(reader.searcher().num_docs(), 0);
writer.add_document(doc!(field=>1u64));
writer.commit().unwrap();
assert!(receiver.recv().is_ok());
assert_eq!(reader.searcher().num_docs(), 1);
writer.add_document(doc!(field=>2u64));
writer.commit().unwrap();
assert!(receiver.recv().is_ok());
assert_eq!(reader.searcher().num_docs(), 2);
}
// This test will not pass on windows, because windows
// prevent deleting files that are MMapped.
#[cfg(not(target_os = "windows"))]
#[test]
fn garbage_collect_works_as_intended() {
let directory = RAMDirectory::create();
let schema = throw_away_schema();
let field = schema.get_field("num_likes").unwrap();
let index = Index::create(directory.clone(), schema).unwrap();
let mut writer = index.writer_with_num_threads(8, 24_000_000).unwrap();
for i in 0u64..8_000u64 {
writer.add_document(doc!(field => i));
}
let (sender, receiver) = crossbeam::channel::unbounded();
let _handle = directory.watch(Box::new(move || {
let _ = sender.send(());
}));
writer.commit().unwrap();
let mem_right_after_commit = directory.total_mem_usage();
assert!(receiver.recv().is_ok());
let reader = index
.reader_builder()
.reload_policy(ReloadPolicy::Manual)
.try_into()
.unwrap();
assert_eq!(reader.searcher().num_docs(), 8_000);
writer.wait_merging_threads().unwrap();
let mem_right_after_merge_finished = directory.total_mem_usage();
reader.reload().unwrap();
let searcher = reader.searcher();
assert_eq!(searcher.num_docs(), 8_000);
assert!(
mem_right_after_merge_finished < mem_right_after_commit,
"(mem after merge){} is expected < (mem before merge){}",
mem_right_after_merge_finished,
mem_right_after_commit
);
}
}

259
src/core/index_meta.rs
View File

@@ -1,7 +1,198 @@
use core::SegmentMeta;
use schema::Schema;
use serde_json;
use super::SegmentComponent;
use crate::core::SegmentId;
use crate::schema::Schema;
use crate::Opstamp;
use census::{Inventory, TrackedObject};
use serde::{Deserialize, Serialize};
use std::collections::HashSet;
use std::fmt;
use std::path::PathBuf;
#[derive(Clone, Debug, Serialize, Deserialize)]
struct DeleteMeta {
num_deleted_docs: u32,
opstamp: Opstamp,
}
#[derive(Clone, Default)]
pub struct SegmentMetaInventory {
inventory: Inventory<InnerSegmentMeta>,
}
impl SegmentMetaInventory {
/// Lists all living `SegmentMeta` object at the time of the call.
pub fn all(&self) -> Vec<SegmentMeta> {
self.inventory
.list()
.into_iter()
.map(SegmentMeta::from)
.collect::<Vec<_>>()
}
pub fn new_segment_meta(&self, segment_id: SegmentId, max_doc: u32) -> SegmentMeta {
let inner = InnerSegmentMeta {
segment_id,
max_doc,
deletes: None,
};
SegmentMeta::from(self.inventory.track(inner))
}
}
/// `SegmentMeta` contains simple meta information about a segment.
///
/// For instance the number of docs it contains,
/// how many are deleted, etc.
#[derive(Clone)]
pub struct SegmentMeta {
tracked: TrackedObject<InnerSegmentMeta>,
}
impl fmt::Debug for SegmentMeta {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
self.tracked.fmt(f)
}
}
impl serde::Serialize for SegmentMeta {
fn serialize<S>(
&self,
serializer: S,
) -> Result<<S as serde::Serializer>::Ok, <S as serde::Serializer>::Error>
where
S: serde::Serializer,
{
self.tracked.serialize(serializer)
}
}
impl From<TrackedObject<InnerSegmentMeta>> for SegmentMeta {
fn from(tracked: TrackedObject<InnerSegmentMeta>) -> SegmentMeta {
SegmentMeta { tracked }
}
}
impl SegmentMeta {
// Creates a new `SegmentMeta` object.
/// Returns the segment id.
pub fn id(&self) -> SegmentId {
self.tracked.segment_id
}
/// Returns the number of deleted documents.
pub fn num_deleted_docs(&self) -> u32 {
self.tracked
.deletes
.as_ref()
.map(|delete_meta| delete_meta.num_deleted_docs)
.unwrap_or(0u32)
}
/// Returns the list of files that
/// are required for the segment meta.
///
/// This is useful as the way tantivy removes files
/// is by removing all files that have been created by tantivy
/// and are not used by any segment anymore.
pub fn list_files(&self) -> HashSet<PathBuf> {
SegmentComponent::iterator()
.map(|component| self.relative_path(*component))
.collect::<HashSet<PathBuf>>()
}
/// Returns the relative path of a component of our segment.
///
/// It just joins the segment id with the extension
/// associated to a segment component.
pub fn relative_path(&self, component: SegmentComponent) -> PathBuf {
let mut path = self.id().uuid_string();
path.push_str(&*match component {
SegmentComponent::POSTINGS => ".idx".to_string(),
SegmentComponent::POSITIONS => ".pos".to_string(),
SegmentComponent::POSITIONSSKIP => ".posidx".to_string(),
SegmentComponent::TERMS => ".term".to_string(),
SegmentComponent::STORE => ".store".to_string(),
SegmentComponent::FASTFIELDS => ".fast".to_string(),
SegmentComponent::FIELDNORMS => ".fieldnorm".to_string(),
SegmentComponent::DELETE => format!(".{}.del", self.delete_opstamp().unwrap_or(0)),
});
PathBuf::from(path)
}
/// Return the highest doc id + 1
///
/// If there are no deletes, then num_docs = max_docs
/// and all the doc ids contains in this segment
/// are exactly (0..max_doc).
pub fn max_doc(&self) -> u32 {
self.tracked.max_doc
}
/// Return the number of documents in the segment.
pub fn num_docs(&self) -> u32 {
self.max_doc() - self.num_deleted_docs()
}
/// Returns the `Opstamp` of the last delete operation
/// taken in account in this segment.
pub fn delete_opstamp(&self) -> Option<Opstamp> {
self.tracked
.deletes
.as_ref()
.map(|delete_meta| delete_meta.opstamp)
}
/// Returns true iff the segment meta contains
/// delete information.
pub fn has_deletes(&self) -> bool {
self.num_deleted_docs() > 0
}
/// Updates the max_doc value from the `SegmentMeta`.
///
/// This method is only used when updating `max_doc` from 0
/// as we finalize a fresh new segment.
pub(crate) fn with_max_doc(self, max_doc: u32) -> SegmentMeta {
assert_eq!(self.tracked.max_doc, 0);
assert!(self.tracked.deletes.is_none());
let tracked = self.tracked.map(move |inner_meta| InnerSegmentMeta {
segment_id: inner_meta.segment_id,
max_doc,
deletes: None,
});
SegmentMeta { tracked }
}
#[doc(hidden)]
pub fn with_delete_meta(self, num_deleted_docs: u32, opstamp: Opstamp) -> SegmentMeta {
let delete_meta = DeleteMeta {
num_deleted_docs,
opstamp,
};
let tracked = self.tracked.map(move |inner_meta| InnerSegmentMeta {
segment_id: inner_meta.segment_id,
max_doc: inner_meta.max_doc,
deletes: Some(delete_meta),
});
SegmentMeta { tracked }
}
}
#[derive(Debug, Clone, Serialize, Deserialize)]
struct InnerSegmentMeta {
segment_id: SegmentId,
max_doc: u32,
deletes: Option<DeleteMeta>,
}
impl InnerSegmentMeta {
pub fn track(self, inventory: &SegmentMetaInventory) -> SegmentMeta {
SegmentMeta {
tracked: inventory.inventory.track(self),
}
}
}
/// Meta information about the `Index`.
///
@@ -11,16 +202,53 @@ use std::fmt;
/// * the index `docstamp`
/// * the schema
///
#[derive(Clone, Serialize, Deserialize)]
#[derive(Clone, Serialize)]
pub struct IndexMeta {
/// List of `SegmentMeta` informations associated to each finalized segment of the index.
pub segments: Vec<SegmentMeta>,
/// Index `Schema`
pub schema: Schema,
pub opstamp: u64,
/// Opstamp associated to the last `commit` operation.
pub opstamp: Opstamp,
#[serde(skip_serializing_if = "Option::is_none")]
/// Payload associated to the last commit.
///
/// Upon commit, clients can optionally add a small `String` payload to their commit
/// to help identify this commit.
/// This payload is entirely unused by tantivy.
pub payload: Option<String>,
}
#[derive(Deserialize)]
struct UntrackedIndexMeta {
pub segments: Vec<InnerSegmentMeta>,
pub schema: Schema,
pub opstamp: Opstamp,
#[serde(skip_serializing_if = "Option::is_none")]
pub payload: Option<String>,
}
impl UntrackedIndexMeta {
pub fn track(self, inventory: &SegmentMetaInventory) -> IndexMeta {
IndexMeta {
segments: self
.segments
.into_iter()
.map(|inner_seg_meta| inner_seg_meta.track(inventory))
.collect::<Vec<SegmentMeta>>(),
schema: self.schema,
opstamp: self.opstamp,
payload: self.payload,
}
}
}
impl IndexMeta {
/// Create an `IndexMeta` object representing a brand new `Index`
/// with the given index.
///
/// This new index does not contains any segments.
/// Opstamp will the value `0u64`.
pub fn with_schema(schema: Schema) -> IndexMeta {
IndexMeta {
segments: vec![],
@@ -29,10 +257,18 @@ impl IndexMeta {
payload: None,
}
}
pub(crate) fn deserialize(
meta_json: &str,
inventory: &SegmentMetaInventory,
) -> serde_json::Result<IndexMeta> {
let untracked_meta_json: UntrackedIndexMeta = serde_json::from_str(meta_json)?;
Ok(untracked_meta_json.track(inventory))
}
}
impl fmt::Debug for IndexMeta {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(
f,
"{}",
@@ -46,23 +282,26 @@ impl fmt::Debug for IndexMeta {
mod tests {
use super::IndexMeta;
use schema::{SchemaBuilder, TEXT};
use crate::schema::{Schema, TEXT};
use serde_json;
#[test]
fn test_serialize_metas() {
let schema = {
let mut schema_builder = SchemaBuilder::new();
let mut schema_builder = Schema::builder();
schema_builder.add_text_field("text", TEXT);
schema_builder.build()
};
let index_metas = IndexMeta {
segments: Vec::new(),
schema: schema,
schema,
opstamp: 0u64,
payload: None,
};
let json = serde_json::ser::to_string(&index_metas).expect("serialization failed");
assert_eq!(json, r#"{"segments":[],"schema":[{"name":"text","type":"text","options":{"indexing":{"record":"position","tokenizer":"default"},"stored":false}}],"opstamp":0}"#);
assert_eq!(
json,
r#"{"segments":[],"schema":[{"name":"text","type":"text","options":{"indexing":{"record":"position","tokenizer":"default"},"stored":false}}],"opstamp":0}"#
);
}
}

75
src/core/inverted_index_reader.rs
View File

@@ -1,14 +1,12 @@
use common::BinarySerializable;
use compression::CompressedIntStream;
use directory::ReadOnlySource;
use postings::FreqReadingOption;
use postings::TermInfo;
use postings::{BlockSegmentPostings, SegmentPostings};
use schema::FieldType;
use schema::IndexRecordOption;
use schema::Term;
use termdict::TermDictionary;
use owned_read::OwnedRead;
use crate::common::BinarySerializable;
use crate::directory::ReadOnlySource;
use crate::positions::PositionReader;
use crate::postings::TermInfo;
use crate::postings::{BlockSegmentPostings, SegmentPostings};
use crate::schema::FieldType;
use crate::schema::IndexRecordOption;
use crate::schema::Term;
use crate::termdict::TermDictionary;
/// The inverted index reader is in charge of accessing
/// the inverted index associated to a specific field.
@@ -27,15 +25,18 @@ pub struct InvertedIndexReader {
termdict: TermDictionary,
postings_source: ReadOnlySource,
positions_source: ReadOnlySource,
positions_idx_source: ReadOnlySource,
record_option: IndexRecordOption,
total_num_tokens: u64,
}
impl InvertedIndexReader {
#[cfg_attr(feature = "cargo-clippy", allow(clippy::needless_pass_by_value))] // for symmetry
pub(crate) fn new(
termdict: TermDictionary,
postings_source: ReadOnlySource,
positions_source: ReadOnlySource,
positions_idx_source: ReadOnlySource,
record_option: IndexRecordOption,
) -> InvertedIndexReader {
let total_num_tokens_data = postings_source.slice(0, 8);
@@ -45,6 +46,7 @@ impl InvertedIndexReader {
termdict,
postings_source: postings_source.slice_from(8),
positions_source,
positions_idx_source,
record_option,
total_num_tokens,
}
@@ -52,14 +54,15 @@ impl InvertedIndexReader {
/// Creates an empty `InvertedIndexReader` object, which
/// contains no terms at all.
pub fn empty(field_type: FieldType) -> InvertedIndexReader {
pub fn empty(field_type: &FieldType) -> InvertedIndexReader {
let record_option = field_type
.get_index_record_option()
.unwrap_or(IndexRecordOption::Basic);
InvertedIndexReader {
termdict: TermDictionary::empty(field_type),
termdict: TermDictionary::empty(),
postings_source: ReadOnlySource::empty(),
positions_source: ReadOnlySource::empty(),
positions_idx_source: ReadOnlySource::empty(),
record_option,
total_num_tokens: 0u64,
}
@@ -93,8 +96,20 @@ impl InvertedIndexReader {
let offset = term_info.postings_offset as usize;
let end_source = self.postings_source.len();
let postings_slice = self.postings_source.slice(offset, end_source);
let postings_reader = OwnedRead::new(postings_slice);
block_postings.reset(term_info.doc_freq as usize, postings_reader);
block_postings.reset(term_info.doc_freq, postings_slice);
}
/// Returns a block postings given a `Term`.
/// This method is for an advanced usage only.
///
/// Most user should prefer using `read_postings` instead.
pub fn read_block_postings(
&self,
term: &Term,
option: IndexRecordOption,
) -> Option<BlockSegmentPostings> {
self.get_term_info(term)
.map(move |term_info| self.read_block_postings_from_terminfo(&term_info, option))
}
/// Returns a block postings given a `term_info`.
@@ -108,15 +123,11 @@ impl InvertedIndexReader {
) -> BlockSegmentPostings {
let offset = term_info.postings_offset as usize;
let postings_data = self.postings_source.slice_from(offset);
let freq_reading_option = match (self.record_option, requested_option) {
(IndexRecordOption::Basic, _) => FreqReadingOption::NoFreq,
(_, IndexRecordOption::Basic) => FreqReadingOption::SkipFreq,
(_, _) => FreqReadingOption::ReadFreq,
};
BlockSegmentPostings::from_data(
term_info.doc_freq as usize,
OwnedRead::new(postings_data),
freq_reading_option,
term_info.doc_freq,
postings_data,
self.record_option,
requested_option,
)
}
@@ -132,11 +143,11 @@ impl InvertedIndexReader {
let block_postings = self.read_block_postings_from_terminfo(term_info, option);
let position_stream = {
if option.has_positions() {
let position_offset = term_info.positions_offset;
let positions_source = self.positions_source.slice_from(position_offset as usize);
let mut stream = CompressedIntStream::wrap(positions_source);
stream.skip(term_info.positions_inner_offset as usize);
Some(stream)
let position_reader = self.positions_source.clone();
let skip_reader = self.positions_idx_source.clone();
let position_reader =
PositionReader::new(position_reader, skip_reader, term_info.positions_idx);
Some(position_reader)
} else {
None
}
@@ -161,8 +172,8 @@ impl InvertedIndexReader {
/// `TextIndexingOptions` that does not index position will return a `SegmentPostings`
/// with `DocId`s and frequencies.
pub fn read_postings(&self, term: &Term, option: IndexRecordOption) -> Option<SegmentPostings> {
let term_info = get!(self.get_term_info(term));
Some(self.read_postings_from_terminfo(&term_info, option))
self.get_term_info(term)
.map(move |term_info| self.read_postings_from_terminfo(&term_info, option))
}
pub(crate) fn read_postings_no_deletes(
@@ -170,8 +181,8 @@ impl InvertedIndexReader {
term: &Term,
option: IndexRecordOption,
) -> Option<SegmentPostings> {
let term_info = get!(self.get_term_info(term));
Some(self.read_postings_from_terminfo(&term_info, option))
self.get_term_info(term)
.map(|term_info| self.read_postings_from_terminfo(&term_info, option))
}
/// Returns the number of documents containing the term.

36
src/core/mod.rs
View File

@@ -1,42 +1,34 @@
mod executor;
pub mod index;
mod index_meta;
mod inverted_index_reader;
mod pool;
pub mod searcher;
mod segment;
mod segment_component;
mod segment_id;
mod segment_meta;
mod segment_reader;
pub use self::executor::Executor;
pub use self::index::Index;
pub use self::index_meta::IndexMeta;
pub use self::index_meta::{IndexMeta, SegmentMeta, SegmentMetaInventory};
pub use self::inverted_index_reader::InvertedIndexReader;
pub use self::searcher::Searcher;
pub use self::segment::Segment;
pub use self::segment::SerializableSegment;
pub use self::segment_component::SegmentComponent;
pub use self::segment_id::SegmentId;
pub use self::segment_meta::SegmentMeta;
pub use self::segment_reader::SegmentReader;
use std::path::PathBuf;
use once_cell::sync::Lazy;
use std::path::Path;
lazy_static! {
/// The meta file contains all the information about the list of segments and the schema
/// of the index.
pub static ref META_FILEPATH: PathBuf = PathBuf::from("meta.json");
/// The meta file contains all the information about the list of segments and the schema
/// of the index.
pub static META_FILEPATH: Lazy<&'static Path> = Lazy::new(|| Path::new("meta.json"));
/// The managed file contains a list of files that were created by the tantivy
/// and will therefore be garbage collected when they are deemed useless by tantivy.
///
/// Removing this file is safe, but will prevent the garbage collection of all of the file that
/// are currently in the directory
pub static ref MANAGED_FILEPATH: PathBuf = PathBuf::from(".managed.json");
/// Only one process should be able to write tantivy's index at a time.
/// This file, when present, is in charge of preventing other processes to open an IndexWriter.
///
/// If the process is killed and this file remains, it is safe to remove it manually.
pub static ref LOCKFILE_FILEPATH: PathBuf = PathBuf::from(".tantivy-indexer.lock");
}
/// The managed file contains a list of files that were created by the tantivy
/// and will therefore be garbage collected when they are deemed useless by tantivy.
///
/// Removing this file is safe, but will prevent the garbage collection of all of the file that
/// are currently in the directory
pub static MANAGED_FILEPATH: Lazy<&'static Path> = Lazy::new(|| Path::new(".managed.json"));

134
src/core/pool.rs
View File

@@ -1,134 +0,0 @@
use crossbeam::sync::MsQueue;
use std::mem;
use std::ops::{Deref, DerefMut};
use std::sync::atomic::AtomicUsize;
use std::sync::atomic::Ordering;
use std::sync::Arc;
pub struct GenerationItem<T> {
generation: usize,
item: T,
}
pub struct Pool<T> {
queue: Arc<MsQueue<GenerationItem<T>>>,
freshest_generation: AtomicUsize,
next_generation: AtomicUsize,
}
impl<T> Pool<T> {
pub fn new() -> Pool<T> {
let queue = Arc::new(MsQueue::new());
Pool {
queue,
freshest_generation: AtomicUsize::default(),
next_generation: AtomicUsize::default(),
}
}
pub fn publish_new_generation(&self, items: Vec<T>) {
let next_generation = self.next_generation.fetch_add(1, Ordering::SeqCst) + 1;
for item in items {
let gen_item = GenerationItem {
item,
generation: next_generation,
};
self.queue.push(gen_item);
}
self.advertise_generation(next_generation);
}
/// At the exit of this method,
/// - freshest_generation has a value greater or equal than generation
/// - freshest_generation has a value that has been advertised
/// - freshest_generation has)
fn advertise_generation(&self, generation: usize) {
// not optimal at all but the easiest to read proof.
loop {
let former_generation = self.freshest_generation.load(Ordering::Acquire);
if former_generation >= generation {
break;
}
self.freshest_generation.compare_and_swap(
former_generation,
generation,
Ordering::SeqCst,
);
}
}
fn generation(&self) -> usize {
self.freshest_generation.load(Ordering::Acquire)
}
pub fn acquire(&self) -> LeasedItem<T> {
let generation = self.generation();
loop {
let gen_item = self.queue.pop();
if gen_item.generation >= generation {
return LeasedItem {
gen_item: Some(gen_item),
recycle_queue: Arc::clone(&self.queue),
};
} else {
// this searcher is obsolete,
// removing it from the pool.
}
}
}
}
pub struct LeasedItem<T> {
gen_item: Option<GenerationItem<T>>,
recycle_queue: Arc<MsQueue<GenerationItem<T>>>,
}
impl<T> Deref for LeasedItem<T> {
type Target = T;
fn deref(&self) -> &T {
&self.gen_item
.as_ref()
.expect("Unwrapping a leased item should never fail")
.item // unwrap is safe here
}
}
impl<T> DerefMut for LeasedItem<T> {
fn deref_mut(&mut self) -> &mut T {
&mut self.gen_item
.as_mut()
.expect("Unwrapping a mut leased item should never fail")
.item // unwrap is safe here
}
}
impl<T> Drop for LeasedItem<T> {
fn drop(&mut self) {
let gen_item: GenerationItem<T> = mem::replace(&mut self.gen_item, None)
.expect("Unwrapping a leased item should never fail");
self.recycle_queue.push(gen_item);
}
}
#[cfg(test)]
mod tests {
use super::Pool;
use std::iter;
#[test]
fn test_pool() {
let items10: Vec<usize> = iter::repeat(10).take(10).collect();
let pool = Pool::new();
pool.publish_new_generation(items10);
for _ in 0..20 {
assert_eq!(*pool.acquire(), 10);
}
let items11: Vec<usize> = iter::repeat(11).take(10).collect();
pool.publish_new_generation(items11);
for _ in 0..20 {
assert_eq!(*pool.acquire(), 11);
}
}
}

135
src/core/searcher.rs
View File

@@ -1,15 +1,18 @@
use collector::Collector;
use core::InvertedIndexReader;
use core::SegmentReader;
use query::Query;
use schema::Document;
use schema::Schema;
use schema::{Field, Term};
use crate::collector::Collector;
use crate::core::Executor;
use crate::core::InvertedIndexReader;
use crate::core::SegmentReader;
use crate::query::Query;
use crate::schema::Document;
use crate::schema::Schema;
use crate::schema::{Field, Term};
use crate::space_usage::SearcherSpaceUsage;
use crate::store::StoreReader;
use crate::termdict::TermMerger;
use crate::DocAddress;
use crate::Index;
use std::fmt;
use std::sync::Arc;
use termdict::TermMerger;
use DocAddress;
use Result;
/// Holds a list of `SegmentReader`s ready for search.
///
@@ -18,25 +21,43 @@ use Result;
///
pub struct Searcher {
schema: Schema,
index: Index,
segment_readers: Vec<SegmentReader>,
store_readers: Vec<StoreReader>,
}
impl Searcher {
/// Creates a new `Searcher`
pub(crate) fn new(schema: Schema, segment_readers: Vec<SegmentReader>) -> Searcher {
pub(crate) fn new(
schema: Schema,
index: Index,
segment_readers: Vec<SegmentReader>,
) -> Searcher {
let store_readers = segment_readers
.iter()
.map(SegmentReader::get_store_reader)
.collect();
Searcher {
schema,
index,
segment_readers,
store_readers,
}
}
/// Returns the `Index` associated to the `Searcher`
pub fn index(&self) -> &Index {
&self.index
}
/// Fetches a document from tantivy's store given a `DocAddress`.
///
/// The searcher uses the segment ordinal to route the
/// the request to the right `Segment`.
pub fn doc(&self, doc_address: &DocAddress) -> Result<Document> {
let DocAddress(segment_local_id, doc_id) = *doc_address;
let segment_reader = &self.segment_readers[segment_local_id as usize];
segment_reader.doc(doc_id)
pub fn doc(&self, doc_address: DocAddress) -> crate::Result<Document> {
let DocAddress(segment_local_id, doc_id) = doc_address;
let store_reader = &self.store_readers[segment_local_id as usize];
store_reader.get(doc_id)
}
/// Access the schema associated to the index of this searcher.
@@ -48,7 +69,7 @@ impl Searcher {
pub fn num_docs(&self) -> u64 {
self.segment_readers
.iter()
.map(|segment_reader| segment_reader.num_docs() as u64)
.map(|segment_reader| u64::from(segment_reader.num_docs()))
.sum::<u64>()
}
@@ -57,7 +78,9 @@ impl Searcher {
pub fn doc_freq(&self, term: &Term) -> u64 {
self.segment_readers
.iter()
.map(|segment_reader| segment_reader.inverted_index(term.field()).doc_freq(term) as u64)
.map(|segment_reader| {
u64::from(segment_reader.inverted_index(term.field()).doc_freq(term))
})
.sum::<u64>()
}
@@ -71,19 +94,77 @@ impl Searcher {
&self.segment_readers[segment_ord as usize]
}
/// Runs a query on the segment readers wrapped by the searcher
pub fn search<C: Collector>(&self, query: &Query, collector: &mut C) -> Result<()> {
query.search(self, collector)
/// Runs a query on the segment readers wrapped by the searcher.
///
/// Search works as follows :
///
/// First the weight object associated to the query is created.
///
/// Then, the query loops over the segments and for each segment :
/// - setup the collector and informs it that the segment being processed has changed.
/// - creates a SegmentCollector for collecting documents associated to the segment
/// - creates a `Scorer` object associated for this segment
/// - iterate through the matched documents and push them to the segment collector.
///
/// Finally, the Collector merges each of the child collectors into itself for result usability
/// by the caller.
pub fn search<C: Collector>(
&self,
query: &dyn Query,
collector: &C,
) -> crate::Result<C::Fruit> {
let executor = self.index.search_executor();
self.search_with_executor(query, collector, executor)
}
/// Same as [`search(...)`](#method.search) but multithreaded.
///
/// The current implementation is rather naive :
/// multithreading is by splitting search into as many task
/// as there are segments.
///
/// It is powerless at making search faster if your index consists in
/// one large segment.
///
/// Also, keep in my multithreading a single query on several
/// threads will not improve your throughput. It can actually
/// hurt it. It will however, decrease the average response time.
pub fn search_with_executor<C: Collector>(
&self,
query: &dyn Query,
collector: &C,
executor: &Executor,
) -> crate::Result<C::Fruit> {
let scoring_enabled = collector.requires_scoring();
let weight = query.weight(self, scoring_enabled)?;
let segment_readers = self.segment_readers();
let fruits = executor.map(
|(segment_ord, segment_reader)| {
collector.collect_segment(weight.as_ref(), segment_ord as u32, segment_reader)
},
segment_readers.iter().enumerate(),
)?;
collector.merge_fruits(fruits)
}
/// Return the field searcher associated to a `Field`.
pub fn field(&self, field: Field) -> FieldSearcher {
let inv_index_readers = self.segment_readers
let inv_index_readers = self
.segment_readers
.iter()
.map(|segment_reader| segment_reader.inverted_index(field))
.collect::<Vec<_>>();
FieldSearcher::new(inv_index_readers)
}
/// Summarize total space usage of this searcher.
pub fn space_usage(&self) -> SearcherSpaceUsage {
let mut space_usage = SearcherSpaceUsage::new();
for segment_reader in self.segment_readers.iter() {
space_usage.add_segment(segment_reader.space_usage());
}
space_usage
}
}
pub struct FieldSearcher {
@@ -97,8 +178,9 @@ impl FieldSearcher {
/// Returns a Stream over all of the sorted unique terms of
/// for the given field.
pub fn terms(&self) -> TermMerger {
let term_streamers: Vec<_> = self.inv_index_readers
pub fn terms(&self) -> TermMerger<'_> {
let term_streamers: Vec<_> = self
.inv_index_readers
.iter()
.map(|inverted_index| inverted_index.terms().stream())
.collect();
@@ -107,10 +189,11 @@ impl FieldSearcher {
}
impl fmt::Debug for Searcher {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let segment_ids = self.segment_readers
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
let segment_ids = self
.segment_readers
.iter()
.map(|segment_reader| segment_reader.segment_id())
.map(SegmentReader::segment_id)
.collect::<Vec<_>>();
write!(f, "Searcher({:?})", segment_ids)
}

59
src/core/segment.rs
View File

@@ -1,16 +1,15 @@
use super::SegmentComponent;
use core::Index;
use core::SegmentId;
use core::SegmentMeta;
use directory::error::{OpenReadError, OpenWriteError};
use directory::Directory;
use directory::{ReadOnlySource, WritePtr};
use indexer::segment_serializer::SegmentSerializer;
use schema::Schema;
use crate::core::Index;
use crate::core::SegmentId;
use crate::core::SegmentMeta;
use crate::directory::error::{OpenReadError, OpenWriteError};
use crate::directory::Directory;
use crate::directory::{ReadOnlySource, WritePtr};
use crate::indexer::segment_serializer::SegmentSerializer;
use crate::schema::Schema;
use crate::Opstamp;
use std::fmt;
use std::path::PathBuf;
use std::result;
use Result;
/// A segment is a piece of the index.
#[derive(Clone)]
@@ -20,20 +19,17 @@ pub struct Segment {
}
impl fmt::Debug for Segment {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "Segment({:?})", self.id().uuid_string())
}
}
/// Creates a new segment given an `Index` and a `SegmentId`
///
/// The function is here to make it private outside `tantivy`.
/// #[doc(hidden)]
pub fn create_segment(index: Index, meta: SegmentMeta) -> Segment {
Segment { index, meta }
}
impl Segment {
/// Creates a new segment given an `Index` and a `SegmentId`
pub(crate) fn for_index(index: Index, meta: SegmentMeta) -> Segment {
Segment { index, meta }
}
/// Returns the index the segment belongs to.
pub fn index(&self) -> &Index {
&self.index
@@ -49,8 +45,19 @@ impl Segment {
&self.meta
}
/// Updates the max_doc value from the `SegmentMeta`.
///
/// This method is only used when updating `max_doc` from 0
/// as we finalize a fresh new segment.
pub(crate) fn with_max_doc(self, max_doc: u32) -> Segment {
Segment {
index: self.index,
meta: self.meta.with_max_doc(max_doc),
}
}
#[doc(hidden)]
pub fn with_delete_meta(self, num_deleted_docs: u32, opstamp: u64) -> Segment {
pub fn with_delete_meta(self, num_deleted_docs: u32, opstamp: Opstamp) -> Segment {
Segment {
index: self.index,
meta: self.meta.with_delete_meta(num_deleted_docs, opstamp),
@@ -71,20 +78,14 @@ impl Segment {
}
/// Open one of the component file for a *regular* read.
pub fn open_read(
&self,
component: SegmentComponent,
) -> result::Result<ReadOnlySource, OpenReadError> {
pub fn open_read(&self, component: SegmentComponent) -> Result<ReadOnlySource, OpenReadError> {
let path = self.relative_path(component);
let source = self.index.directory().open_read(&path)?;
Ok(source)
}
/// Open one of the component file for *regular* write.
pub fn open_write(
&mut self,
component: SegmentComponent,
) -> result::Result<WritePtr, OpenWriteError> {
pub fn open_write(&mut self, component: SegmentComponent) -> Result<WritePtr, OpenWriteError> {
let path = self.relative_path(component);
let write = self.index.directory_mut().open_write(&path)?;
Ok(write)
@@ -97,5 +98,5 @@ pub trait SerializableSegment {
///
/// # Returns
/// The number of documents in the segment.
fn write(&self, serializer: SegmentSerializer) -> Result<u32>;
fn write(&self, serializer: SegmentSerializer) -> crate::Result<u32>;
}

7
src/core/segment_component.rs
View File

@@ -10,6 +10,8 @@ pub enum SegmentComponent {
POSTINGS,
/// Positions of terms in each document.
POSITIONS,
/// Index to seek within the position file
POSITIONSSKIP,
/// Column-oriented random-access storage of fields.
FASTFIELDS,
/// Stores the sum of the length (in terms) of each field for each document.
@@ -29,15 +31,16 @@ pub enum SegmentComponent {
impl SegmentComponent {
/// Iterates through the components.
pub fn iterator() -> slice::Iter<'static, SegmentComponent> {
static SEGMENT_COMPONENTS: [SegmentComponent; 7] = [
static SEGMENT_COMPONENTS: [SegmentComponent; 8] = [
SegmentComponent::POSTINGS,
SegmentComponent::POSITIONS,
SegmentComponent::POSITIONSSKIP,
SegmentComponent::FASTFIELDS,
SegmentComponent::FIELDNORMS,
SegmentComponent::TERMS,
SegmentComponent::STORE,
SegmentComponent::DELETE,
];
SEGMENT_COMPONENTS.into_iter()
SEGMENT_COMPONENTS.iter()
}
}

74
src/core/segment_id.rs
View File

@@ -2,6 +2,11 @@ use std::cmp::{Ord, Ordering};
use std::fmt;
use uuid::Uuid;
#[cfg(test)]
use once_cell::sync::Lazy;
use serde::{Deserialize, Serialize};
use std::error::Error;
use std::str::FromStr;
#[cfg(test)]
use std::sync::atomic;
@@ -17,10 +22,10 @@ use std::sync::atomic;
pub struct SegmentId(Uuid);
#[cfg(test)]
lazy_static! {
static ref AUTO_INC_COUNTER: atomic::AtomicUsize = atomic::AtomicUsize::default();
static ref EMPTY_ARR: [u8; 8] = [0u8; 8];
}
static AUTO_INC_COUNTER: Lazy<atomic::AtomicUsize> = Lazy::new(|| atomic::AtomicUsize::default());
#[cfg(test)]
const ZERO_ARRAY: [u8; 8] = [0u8; 8];
// During tests, we generate the segment id in a autoincrement manner
// for consistency of segment id between run.
@@ -30,7 +35,7 @@ lazy_static! {
#[cfg(test)]
fn create_uuid() -> Uuid {
let new_auto_inc_id = (*AUTO_INC_COUNTER).fetch_add(1, atomic::Ordering::SeqCst);
Uuid::from_fields(new_auto_inc_id as u32, 0, 0, &*EMPTY_ARR).unwrap()
Uuid::from_fields(new_auto_inc_id as u32, 0, 0, &ZERO_ARRAY).unwrap()
}
#[cfg(not(test))]
@@ -50,19 +55,55 @@ impl SegmentId {
/// and the rest is random.
///
/// Picking the first 8 chars is ok to identify
/// segments in a display message.
/// segments in a display message (e.g. a5c4dfcb).
pub fn short_uuid_string(&self) -> String {
(&self.0.simple().to_string()[..8]).to_string()
(&self.0.to_simple_ref().to_string()[..8]).to_string()
}
/// Returns a segment uuid string.
///
/// It consists in 32 lowercase hexadecimal chars
/// (e.g. a5c4dfcbdfe645089129e308e26d5523)
pub fn uuid_string(&self) -> String {
self.0.simple().to_string()
self.0.to_simple_ref().to_string()
}
/// Build a `SegmentId` string from the full uuid string.
///
/// E.g. "a5c4dfcbdfe645089129e308e26d5523"
pub fn from_uuid_string(uuid_string: &str) -> Result<SegmentId, SegmentIdParseError> {
FromStr::from_str(uuid_string)
}
}
/// Error type used when parsing a `SegmentId` from a string fails.
pub struct SegmentIdParseError(uuid::Error);
impl Error for SegmentIdParseError {}
impl fmt::Debug for SegmentIdParseError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
self.0.fmt(f)
}
}
impl fmt::Display for SegmentIdParseError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
self.0.fmt(f)
}
}
impl FromStr for SegmentId {
type Err = SegmentIdParseError;
fn from_str(uuid_string: &str) -> Result<Self, SegmentIdParseError> {
let uuid = Uuid::parse_str(uuid_string).map_err(SegmentIdParseError)?;
Ok(SegmentId(uuid))
}
}
impl fmt::Debug for SegmentId {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "Seg({:?})", self.short_uuid_string())
}
}
@@ -78,3 +119,18 @@ impl Ord for SegmentId {
self.0.as_bytes().cmp(other.0.as_bytes())
}
}
#[cfg(test)]
mod tests {
use super::SegmentId;
#[test]
fn test_to_uuid_string() {
let full_uuid = "a5c4dfcbdfe645089129e308e26d5523";
let segment_id = SegmentId::from_uuid_string(full_uuid).unwrap();
assert_eq!(segment_id.uuid_string(), full_uuid);
assert_eq!(segment_id.short_uuid_string(), "a5c4dfcb");
// one extra char
assert!(SegmentId::from_uuid_string("a5c4dfcbdfe645089129e308e26d5523b").is_err());
}
}

173
src/core/segment_meta.rs
View File

@@ -1,173 +0,0 @@
use super::SegmentComponent;
use census::{Inventory, TrackedObject};
use core::SegmentId;
use serde;
use std::collections::HashSet;
use std::fmt;
use std::path::PathBuf;
lazy_static! {
static ref INVENTORY: Inventory<InnerSegmentMeta> = { Inventory::new() };
}
#[derive(Clone, Debug, Serialize, Deserialize)]
struct DeleteMeta {
num_deleted_docs: u32,
opstamp: u64,
}
/// `SegmentMeta` contains simple meta information about a segment.
///
/// For instance the number of docs it contains,
/// how many are deleted, etc.
#[derive(Clone)]
pub struct SegmentMeta {
tracked: TrackedObject<InnerSegmentMeta>,
}
impl fmt::Debug for SegmentMeta {
fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
self.tracked.fmt(f)
}
}
impl serde::Serialize for SegmentMeta {
fn serialize<S>(
&self,
serializer: S,
) -> Result<<S as serde::Serializer>::Ok, <S as serde::Serializer>::Error>
where
S: serde::Serializer,
{
self.tracked.serialize(serializer)
}
}
impl<'a> serde::Deserialize<'a> for SegmentMeta {
fn deserialize<D>(deserializer: D) -> Result<Self, <D as serde::Deserializer<'a>>::Error>
where
D: serde::Deserializer<'a>,
{
let inner = InnerSegmentMeta::deserialize(deserializer)?;
let tracked = INVENTORY.track(inner);
Ok(SegmentMeta { tracked: tracked })
}
}
impl SegmentMeta {
/// Lists all living `SegmentMeta` object at the time of the call.
pub fn all() -> Vec<SegmentMeta> {
INVENTORY
.list()
.into_iter()
.map(|inner| SegmentMeta { tracked: inner })
.collect::<Vec<_>>()
}
/// Creates a new `SegmentMeta` object.
#[doc(hidden)]
pub fn new(segment_id: SegmentId, max_doc: u32) -> SegmentMeta {
let inner = InnerSegmentMeta {
segment_id,
max_doc,
deletes: None,
};
SegmentMeta {
tracked: INVENTORY.track(inner),
}
}
/// Returns the segment id.
pub fn id(&self) -> SegmentId {
self.tracked.segment_id
}
/// Returns the number of deleted documents.
pub fn num_deleted_docs(&self) -> u32 {
self.tracked
.deletes
.as_ref()
.map(|delete_meta| delete_meta.num_deleted_docs)
.unwrap_or(0u32)
}
/// Returns the list of files that
/// are required for the segment meta.
///
/// This is useful as the way tantivy removes files
/// is by removing all files that have been created by tantivy
/// and are not used by any segment anymore.
pub fn list_files(&self) -> HashSet<PathBuf> {
SegmentComponent::iterator()
.map(|component| self.relative_path(*component))
.collect::<HashSet<PathBuf>>()
}
/// Returns the relative path of a component of our segment.
///
/// It just joins the segment id with the extension
/// associated to a segment component.
pub fn relative_path(&self, component: SegmentComponent) -> PathBuf {
let mut path = self.id().uuid_string();
path.push_str(&*match component {
SegmentComponent::POSITIONS => ".pos".to_string(),
SegmentComponent::POSTINGS => ".idx".to_string(),
SegmentComponent::TERMS => ".term".to_string(),
SegmentComponent::STORE => ".store".to_string(),
SegmentComponent::FASTFIELDS => ".fast".to_string(),
SegmentComponent::FIELDNORMS => ".fieldnorm".to_string(),
SegmentComponent::DELETE => format!(".{}.del", self.delete_opstamp().unwrap_or(0)),
});
PathBuf::from(path)
}
/// Return the highest doc id + 1
///
/// If there are no deletes, then num_docs = max_docs
/// and all the doc ids contains in this segment
/// are exactly (0..max_doc).
pub fn max_doc(&self) -> u32 {
self.tracked.max_doc
}
/// Return the number of documents in the segment.
pub fn num_docs(&self) -> u32 {
self.max_doc() - self.num_deleted_docs()
}
/// Returns the opstamp of the last delete operation
/// taken in account in this segment.
pub fn delete_opstamp(&self) -> Option<u64> {
self.tracked
.deletes
.as_ref()
.map(|delete_meta| delete_meta.opstamp)
}
/// Returns true iff the segment meta contains
/// delete information.
pub fn has_deletes(&self) -> bool {
self.num_deleted_docs() > 0
}
#[doc(hidden)]
pub fn with_delete_meta(self, num_deleted_docs: u32, opstamp: u64) -> SegmentMeta {
let delete_meta = DeleteMeta {
num_deleted_docs,
opstamp,
};
let tracked = self.tracked.map(move |inner_meta| InnerSegmentMeta {
segment_id: inner_meta.segment_id,
max_doc: inner_meta.max_doc,
deletes: Some(delete_meta),
});
SegmentMeta { tracked }
}
}
#[derive(Clone, Debug, Serialize, Deserialize)]
struct InnerSegmentMeta {
segment_id: SegmentId,
max_doc: u32,
deletes: Option<DeleteMeta>,
}

299
src/core/segment_reader.rs
View File

@@ -1,30 +1,26 @@
use common::CompositeFile;
use common::HasLen;
use core::InvertedIndexReader;
use core::Segment;
use core::SegmentComponent;
use core::SegmentId;
use core::SegmentMeta;
use error::ErrorKind;
use fastfield::DeleteBitSet;
use fastfield::FacetReader;
use fastfield::FastFieldReader;
use fastfield::{self, FastFieldNotAvailableError};
use fastfield::{BytesFastFieldReader, FastValue, MultiValueIntFastFieldReader};
use fieldnorm::FieldNormReader;
use schema::Cardinality;
use schema::Document;
use schema::Field;
use schema::FieldType;
use schema::Schema;
use crate::common::CompositeFile;
use crate::common::HasLen;
use crate::core::InvertedIndexReader;
use crate::core::Segment;
use crate::core::SegmentComponent;
use crate::core::SegmentId;
use crate::directory::ReadOnlySource;
use crate::fastfield::DeleteBitSet;
use crate::fastfield::FacetReader;
use crate::fastfield::FastFieldReaders;
use crate::fieldnorm::{FieldNormReader, FieldNormReaders};
use crate::schema::Field;
use crate::schema::FieldType;
use crate::schema::Schema;
use crate::space_usage::SegmentSpaceUsage;
use crate::store::StoreReader;
use crate::termdict::TermDictionary;
use crate::DocId;
use fail::fail_point;
use std::collections::HashMap;
use std::fmt;
use std::sync::Arc;
use std::sync::RwLock;
use store::StoreReader;
use termdict::TermDictionary;
use DocId;
use Result;
/// Entry point to access all of the datastructures of the `Segment`
///
@@ -44,15 +40,17 @@ pub struct SegmentReader {
inv_idx_reader_cache: Arc<RwLock<HashMap<Field, Arc<InvertedIndexReader>>>>,
segment_id: SegmentId,
segment_meta: SegmentMeta,
max_doc: DocId,
num_docs: DocId,
termdict_composite: CompositeFile,
postings_composite: CompositeFile,
positions_composite: CompositeFile,
fast_fields_composite: CompositeFile,
fieldnorms_composite: CompositeFile,
positions_idx_composite: CompositeFile,
fast_fields_readers: Arc<FastFieldReaders>,
fieldnorm_readers: FieldNormReaders,
store_reader: StoreReader,
store_source: ReadOnlySource,
delete_bitset_opt: Option<DeleteBitSet>,
schema: Schema,
}
@@ -63,7 +61,7 @@ impl SegmentReader {
/// Today, `tantivy` does not handle deletes, so it happens
/// to also be the number of documents in the index.
pub fn max_doc(&self) -> DocId {
self.segment_meta.max_doc()
self.max_doc
}
/// Returns the number of documents.
@@ -72,7 +70,7 @@ impl SegmentReader {
/// Today, `tantivy` does not handle deletes so max doc and
/// num_docs are the same.
pub fn num_docs(&self) -> DocId {
self.segment_meta.num_docs()
self.num_docs
}
/// Returns the schema of the index this segment belongs to.
@@ -103,104 +101,35 @@ impl SegmentReader {
///
/// # Panics
/// May panic if the index is corrupted.
pub fn fast_field_reader<Item: FastValue>(
&self,
field: Field,
) -> fastfield::Result<FastFieldReader<Item>> {
let field_entry = self.schema.get_field_entry(field);
if Item::fast_field_cardinality(field_entry.field_type()) == Some(Cardinality::SingleValue)
{
self.fast_fields_composite
.open_read(field)
.ok_or_else(|| FastFieldNotAvailableError::new(field_entry))
.map(FastFieldReader::open)
} else {
Err(FastFieldNotAvailableError::new(field_entry))
}
}
pub(crate) fn fast_field_reader_with_idx<Item: FastValue>(
&self,
field: Field,
idx: usize,
) -> fastfield::Result<FastFieldReader<Item>> {
if let Some(ff_source) = self.fast_fields_composite.open_read_with_idx(field, idx) {
Ok(FastFieldReader::open(ff_source))
} else {
let field_entry = self.schema.get_field_entry(field);
Err(FastFieldNotAvailableError::new(field_entry))
}
}
/// Accessor to the `MultiValueIntFastFieldReader` associated to a given `Field`.
/// May panick if the field is not a multivalued fastfield of the type `Item`.
pub fn multi_fast_field_reader<Item: FastValue>(
&self,
field: Field,
) -> fastfield::Result<MultiValueIntFastFieldReader<Item>> {
let field_entry = self.schema.get_field_entry(field);
if Item::fast_field_cardinality(field_entry.field_type()) == Some(Cardinality::MultiValues)
{
let idx_reader = self.fast_field_reader_with_idx(field, 0)?;
let vals_reader = self.fast_field_reader_with_idx(field, 1)?;
Ok(MultiValueIntFastFieldReader::open(idx_reader, vals_reader))
} else {
Err(FastFieldNotAvailableError::new(field_entry))
}
}
/// Accessor to the `BytesFastFieldReader` associated to a given `Field`.
pub fn bytes_fast_field_reader(&self, field: Field) -> fastfield::Result<BytesFastFieldReader> {
let field_entry = self.schema.get_field_entry(field);
match field_entry.field_type() {
&FieldType::Bytes => {}
_ => return Err(FastFieldNotAvailableError::new(field_entry)),
}
let idx_reader = self.fast_fields_composite
.open_read_with_idx(field, 0)
.ok_or_else(|| FastFieldNotAvailableError::new(field_entry))
.map(FastFieldReader::open)?;
let values = self.fast_fields_composite
.open_read_with_idx(field, 1)
.ok_or_else(|| FastFieldNotAvailableError::new(field_entry))?;
Ok(BytesFastFieldReader::open(idx_reader, values))
pub fn fast_fields(&self) -> &FastFieldReaders {
&self.fast_fields_readers
}
/// Accessor to the `FacetReader` associated to a given `Field`.
pub fn facet_reader(&self, field: Field) -> Result<FacetReader> {
pub fn facet_reader(&self, field: Field) -> Option<FacetReader> {
let field_entry = self.schema.get_field_entry(field);
if field_entry.field_type() != &FieldType::HierarchicalFacet {
return Err(ErrorKind::InvalidArgument(format!(
"The field {:?} is not a \
hierarchical facet.",
field_entry
)).into());
return None;
}
let term_ords_reader = self.multi_fast_field_reader(field)?;
let termdict_source = self.termdict_composite.open_read(field).ok_or_else(|| {
ErrorKind::InvalidArgument(format!(
"The field \"{}\" is a hierarchical \
but this segment does not seem to have the field term \
dictionary.",
field_entry.name()
))
})?;
let termdict = TermDictionary::from_source(termdict_source);
let term_ords_reader = self.fast_fields().u64s(field)?;
let termdict = self.termdict_composite
.open_read(field)
.map(|source| TermDictionary::from_source(&source))
.unwrap_or_else(TermDictionary::empty);
let facet_reader = FacetReader::new(term_ords_reader, termdict);
Ok(facet_reader)
Some(facet_reader)
}
/// Accessor to the segment's `Field norms`'s reader.
///
/// Field norms are the length (in tokens) of the fields.
/// It is used in the computation of the [TfIdf]
/// (https://fulmicoton.gitbooks.io/tantivy-doc/content/tfidf.html).
/// It is used in the computation of the [TfIdf](https://fulmicoton.gitbooks.io/tantivy-doc/content/tfidf.html).
///
/// They are simply stored as a fast field, serialized in
/// the `.fieldnorm` file of the segment.
pub fn get_fieldnorms_reader(&self, field: Field) -> FieldNormReader {
if let Some(fieldnorm_source) = self.fieldnorms_composite.open_read(field) {
FieldNormReader::open(fieldnorm_source)
if let Some(fieldnorm_reader) = self.fieldnorm_readers.get_field(field) {
fieldnorm_reader
} else {
let field_name = self.schema.get_field_name(field);
let err_msg = format!(
@@ -212,17 +141,18 @@ impl SegmentReader {
}
/// Accessor to the segment's `StoreReader`.
pub fn get_store_reader(&self) -> &StoreReader {
&self.store_reader
pub fn get_store_reader(&self) -> StoreReader {
StoreReader::from_source(self.store_source.clone())
}
/// Open a new segment for reading.
pub fn open(segment: &Segment) -> Result<SegmentReader> {
pub fn open(segment: &Segment) -> crate::Result<SegmentReader> {
let termdict_source = segment.open_read(SegmentComponent::TERMS)?;
let termdict_composite = CompositeFile::open(&termdict_source)?;
let store_source = segment.open_read(SegmentComponent::STORE)?;
let store_reader = StoreReader::from_source(store_source);
fail_point!("SegmentReader::open#middle");
let postings_source = segment.open_read(SegmentComponent::POSTINGS)?;
let postings_composite = CompositeFile::open(&postings_source)?;
@@ -235,11 +165,23 @@ impl SegmentReader {
}
};
let positions_idx_composite = {
if let Ok(source) = segment.open_read(SegmentComponent::POSITIONSSKIP) {
CompositeFile::open(&source)?
} else {
CompositeFile::empty()
}
};
let schema = segment.schema();
let fast_fields_data = segment.open_read(SegmentComponent::FASTFIELDS)?;
let fast_fields_composite = CompositeFile::open(&fast_fields_data)?;
let fast_field_readers =
Arc::new(FastFieldReaders::load_all(&schema, &fast_fields_composite)?);
let fieldnorms_data = segment.open_read(SegmentComponent::FIELDNORMS)?;
let fieldnorms_composite = CompositeFile::open(&fieldnorms_data)?;
let fieldnorm_data = segment.open_read(SegmentComponent::FIELDNORMS)?;
let fieldnorm_readers = FieldNormReaders::open(fieldnorm_data)?;
let delete_bitset_opt = if segment.meta().has_deletes() {
let delete_data = segment.open_read(SegmentComponent::DELETE)?;
@@ -248,18 +190,19 @@ impl SegmentReader {
None
};
let schema = segment.schema();
Ok(SegmentReader {
inv_idx_reader_cache: Arc::new(RwLock::new(HashMap::new())),
segment_meta: segment.meta().clone(),
max_doc: segment.meta().max_doc(),
num_docs: segment.meta().num_docs(),
termdict_composite,
postings_composite,
fast_fields_composite,
fieldnorms_composite,
fast_fields_readers: fast_field_readers,
fieldnorm_readers,
segment_id: segment.id(),
store_reader,
store_source,
delete_bitset_opt,
positions_composite,
positions_idx_composite,
schema,
})
}
@@ -272,7 +215,8 @@ impl SegmentReader {
/// term dictionary associated to a specific field,
/// and opening the posting list associated to any term.
pub fn inverted_index(&self, field: Field) -> Arc<InvertedIndexReader> {
if let Some(inv_idx_reader) = self.inv_idx_reader_cache
if let Some(inv_idx_reader) = self
.inv_idx_reader_cache
.read()
.expect("Lock poisoned. This should never happen")
.get(&field)
@@ -296,23 +240,30 @@ impl SegmentReader {
// As a result, no data is associated to the inverted index.
//
// Returns an empty inverted index.
return Arc::new(InvertedIndexReader::empty(field_type.clone()));
return Arc::new(InvertedIndexReader::empty(field_type));
}
let postings_source = postings_source_opt.unwrap();
let termdict_source = self.termdict_composite
.open_read(field)
.expect("Failed to open field term dictionary in composite file. Is the field indexed");
let termdict_source = self.termdict_composite.open_read(field).expect(
"Failed to open field term dictionary in composite file. Is the field indexed?",
);
let positions_source = self.positions_composite
let positions_source = self
.positions_composite
.open_read(field)
.expect("Index corrupted. Failed to open field positions in composite file.");
let positions_idx_source = self
.positions_idx_composite
.open_read(field)
.expect("Index corrupted. Failed to open field positions in composite file.");
let inv_idx_reader = Arc::new(InvertedIndexReader::new(
TermDictionary::from_source(termdict_source),
TermDictionary::from_source(&termdict_source),
postings_source,
positions_source,
positions_idx_source,
record_option,
));
@@ -326,14 +277,6 @@ impl SegmentReader {
inv_idx_reader
}
/// Returns the document (or to be accurate, its stored field)
/// bearing the given doc id.
/// This method is slow and should seldom be called from
/// within a collector.
pub fn doc(&self, doc_id: DocId) -> Result<Document> {
self.store_reader.get(doc_id)
}
/// Returns the segment id
pub fn segment_id(&self) -> SegmentId {
self.segment_id
@@ -354,72 +297,44 @@ impl SegmentReader {
}
/// Returns an iterator that will iterate over the alive document ids
pub fn doc_ids_alive(&self) -> SegmentReaderAliveDocsIterator {
SegmentReaderAliveDocsIterator::new(&self)
pub fn doc_ids_alive<'a>(&'a self) -> impl Iterator<Item = DocId> + 'a {
(0u32..self.max_doc).filter(move |doc| !self.is_deleted(*doc))
}
/// Summarize total space usage of this segment.
pub fn space_usage(&self) -> SegmentSpaceUsage {
SegmentSpaceUsage::new(
self.num_docs(),
self.termdict_composite.space_usage(),
self.postings_composite.space_usage(),
self.positions_composite.space_usage(),
self.positions_idx_composite.space_usage(),
self.fast_fields_readers.space_usage(),
self.fieldnorm_readers.space_usage(),
self.get_store_reader().space_usage(),
self.delete_bitset_opt
.as_ref()
.map(DeleteBitSet::space_usage)
.unwrap_or(0),
)
}
}
impl fmt::Debug for SegmentReader {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "SegmentReader({:?})", self.segment_id)
}
}
/// Implements the iterator trait to allow easy iteration
/// over non-deleted ("alive") DocIds in a SegmentReader
pub struct SegmentReaderAliveDocsIterator<'a> {
reader: &'a SegmentReader,
max_doc: DocId,
current: DocId,
}
impl<'a> SegmentReaderAliveDocsIterator<'a> {
pub fn new(reader: &'a SegmentReader) -> SegmentReaderAliveDocsIterator<'a> {
SegmentReaderAliveDocsIterator {
reader: reader,
max_doc: reader.max_doc(),
current: 0,
}
}
}
impl<'a> Iterator for SegmentReaderAliveDocsIterator<'a> {
type Item = DocId;
fn next(&mut self) -> Option<Self::Item> {
// TODO: Use TinySet (like in BitSetDocSet) to speed this process up
if self.current >= self.max_doc {
return None;
}
// find the next alive doc id
while self.reader.is_deleted(self.current) {
self.current += 1;
if self.current >= self.max_doc {
return None;
}
}
// capture the current alive DocId
let result = Some(self.current);
// move down the chain
self.current += 1;
result
}
}
#[cfg(test)]
mod test {
use core::Index;
use schema::{SchemaBuilder, Term, STORED, TEXT};
use DocId;
use crate::core::Index;
use crate::schema::{Schema, Term, STORED, TEXT};
use crate::DocId;
#[test]
fn test_alive_docs_iterator() {
let mut schema_builder = SchemaBuilder::new();
let mut schema_builder = Schema::builder();
schema_builder.add_text_field("name", TEXT | STORED);
let schema = schema_builder.build();
let index = Index::create_in_ram(schema.clone());
@@ -444,9 +359,7 @@ mod test {
// ok, now we should have a deleted doc
index_writer2.commit().unwrap();
}
index.load_searchers().unwrap();
let searcher = index.searcher();
let searcher = index.reader().unwrap().searcher();
let docs: Vec<DocId> = searcher.segment_reader(0).doc_ids_alive().collect();
assert_eq!(vec![0u32, 2u32], docs);
}

158
src/directory/directory.rs
View File

@@ -1,11 +1,104 @@
use directory::error::{DeleteError, OpenReadError, OpenWriteError};
use directory::{ReadOnlySource, WritePtr};
use crate::directory::directory_lock::Lock;
use crate::directory::error::LockError;
use crate::directory::error::{DeleteError, OpenReadError, OpenWriteError};
use crate::directory::WatchCallback;
use crate::directory::WatchHandle;
use crate::directory::{ReadOnlySource, WritePtr};
use std::fmt;
use std::io;
use std::io::Write;
use std::marker::Send;
use std::marker::Sync;
use std::path::Path;
use std::path::PathBuf;
use std::result;
use std::thread;
use std::time::Duration;
/// Retry the logic of acquiring locks is pretty simple.
/// We just retry `n` times after a given `duratio`, both
/// depending on the type of lock.
struct RetryPolicy {
num_retries: usize,
wait_in_ms: u64,
}
impl RetryPolicy {
fn no_retry() -> RetryPolicy {
RetryPolicy {
num_retries: 0,
wait_in_ms: 0,
}
}
fn wait_and_retry(&mut self) -> bool {
if self.num_retries == 0 {
false
} else {
self.num_retries -= 1;
let wait_duration = Duration::from_millis(self.wait_in_ms);
thread::sleep(wait_duration);
true
}
}
}
/// The `DirectoryLock` is an object that represents a file lock.
/// See [`LockType`](struct.LockType.html)
///
/// It is transparently associated to a lock file, that gets deleted
/// on `Drop.` The lock is released automatically on `Drop`.
pub struct DirectoryLock(Box<dyn Send + Sync + 'static>);
struct DirectoryLockGuard {
directory: Box<dyn Directory>,
path: PathBuf,
}
impl<T: Send + Sync + 'static> From<Box<T>> for DirectoryLock {
fn from(underlying: Box<T>) -> Self {
DirectoryLock(underlying)
}
}
impl Drop for DirectoryLockGuard {
fn drop(&mut self) {
if let Err(e) = self.directory.delete(&*self.path) {
error!("Failed to remove the lock file. {:?}", e);
}
}
}
enum TryAcquireLockError {
FileExists,
IOError(io::Error),
}
fn try_acquire_lock(
filepath: &Path,
directory: &mut dyn Directory,
) -> Result<DirectoryLock, TryAcquireLockError> {
let mut write = directory.open_write(filepath).map_err(|e| match e {
OpenWriteError::FileAlreadyExists(_) => TryAcquireLockError::FileExists,
OpenWriteError::IOError(io_error) => TryAcquireLockError::IOError(io_error.into()),
})?;
write.flush().map_err(TryAcquireLockError::IOError)?;
Ok(DirectoryLock::from(Box::new(DirectoryLockGuard {
directory: directory.box_clone(),
path: filepath.to_owned(),
})))
}
fn retry_policy(is_blocking: bool) -> RetryPolicy {
if is_blocking {
RetryPolicy {
num_retries: 100,
wait_in_ms: 100,
}
} else {
RetryPolicy::no_retry()
}
}
/// Write-once read many (WORM) abstraction for where
/// tantivy's data should be stored.
@@ -17,7 +110,7 @@ use std::result;
/// - The [`RAMDirectory`](struct.RAMDirectory.html), which
/// should be used mostly for tests.
///
pub trait Directory: fmt::Debug + Send + Sync + 'static {
pub trait Directory: DirectoryClone + fmt::Debug + Send + Sync + 'static {
/// Opens a virtual file for read.
///
/// Once a virtual file is open, its data may not
@@ -25,6 +118,8 @@ pub trait Directory: fmt::Debug + Send + Sync + 'static {
///
/// Specifically, subsequent writes or flushes should
/// have no effect on the returned `ReadOnlySource` object.
///
/// You should only use this to read files create with [Directory::open_write].
fn open_read(&self, path: &Path) -> result::Result<ReadOnlySource, OpenReadError>;
/// Removes a file
@@ -64,6 +159,8 @@ pub trait Directory: fmt::Debug + Send + Sync + 'static {
/// atomic_write.
///
/// This should only be used for small files.
///
/// You should only use this to read files create with [Directory::atomic_write].
fn atomic_read(&self, path: &Path) -> Result<Vec<u8>, OpenReadError>;
/// Atomically replace the content of a file with data.
@@ -74,6 +171,57 @@ pub trait Directory: fmt::Debug + Send + Sync + 'static {
/// The file may or may not previously exist.
fn atomic_write(&mut self, path: &Path, data: &[u8]) -> io::Result<()>;
/// Clones the directory and boxes the clone
fn box_clone(&self) -> Box<Directory>;
/// Acquire a lock in the given directory.
///
/// The method is blocking or not depending on the `Lock` object.
fn acquire_lock(&self, lock: &Lock) -> Result<DirectoryLock, LockError> {
let mut box_directory = self.box_clone();
let mut retry_policy = retry_policy(lock.is_blocking);
loop {
match try_acquire_lock(&lock.filepath, &mut *box_directory) {
Ok(result) => {
return Ok(result);
}
Err(TryAcquireLockError::FileExists) => {
if !retry_policy.wait_and_retry() {
return Err(LockError::LockBusy);
}
}
Err(TryAcquireLockError::IOError(io_error)) => {
return Err(LockError::IOError(io_error));
}
}
}
}
/// Registers a callback that will be called whenever a change on the `meta.json`
/// using the `atomic_write` API is detected.
///
/// The behavior when using `.watch()` on a file using [Directory::open_write] is, on the other
/// hand, undefined.
///
/// The file will be watched for the lifetime of the returned `WatchHandle`. The caller is
/// required to keep it.
/// It does not override previous callbacks. When the file is modified, all callback that are
/// registered (and whose `WatchHandle` is still alive) are triggered.
///
/// Internally, tantivy only uses this API to detect new commits to implement the
/// `OnCommit` `ReloadPolicy`. Not implementing watch in a `Directory` only prevents the
/// `OnCommit` `ReloadPolicy` to work properly.
fn watch(&self, watch_callback: WatchCallback) -> crate::Result<WatchHandle>;
}
/// DirectoryClone
pub trait DirectoryClone {
/// Clones the directory and boxes the clone
fn box_clone(&self) -> Box<dyn Directory>;
}
impl<T> DirectoryClone for T
where
T: 'static + Directory + Clone,
{
fn box_clone(&self) -> Box<dyn Directory> {
Box::new(self.clone())
}
}

55
src/directory/directory_lock.rs Normal file
View File

@@ -0,0 +1,55 @@
use once_cell::sync::Lazy;
use std::path::PathBuf;
/// A directory lock.
///
/// A lock is associated to a specific path and some
/// [`LockParams`](./enum.LockParams.html).
/// Tantivy itself uses only two locks but client application
/// can use the directory facility to define their own locks.
/// - [INDEX_WRITER_LOCK](./struct.INDEX_WRITER_LOCK.html)
/// - [META_LOCK](./struct.META_LOCK.html)
///
/// Check out these locks documentation for more information.
///
#[derive(Debug)]
pub struct Lock {
/// The lock needs to be associated with its own file `path`.
/// Depending on the platform, the lock might rely on the creation
/// and deletion of this filepath.
pub filepath: PathBuf,
/// `lock_params` describes whether acquiring the lock is meant
/// to be a blocking operation or a non-blocking.
///
/// Acquiring a blocking lock blocks until the lock is
/// available.
/// Acquiring a blocking lock returns rapidly, either successfully
/// or with an error signifying that someone is already holding
/// the lock.
pub is_blocking: bool,
}
/// Only one process should be able to write tantivy's index at a time.
/// This lock file, when present, is in charge of preventing other processes to open an IndexWriter.
///
/// If the process is killed and this file remains, it is safe to remove it manually.
///
/// Failing to acquire this lock usually means a misuse of tantivy's API,
/// (creating more than one instance of the `IndexWriter`), are a spurious
/// lock file remaining after a crash. In the latter case, removing the file after
/// checking no process running tantivy is running is safe.
pub static INDEX_WRITER_LOCK: Lazy<Lock> = Lazy::new(|| Lock {
filepath: PathBuf::from(".tantivy-writer.lock"),
is_blocking: false,
});
/// The meta lock file is here to protect the segment files being opened by
/// `IndexReader::reload()` from being garbage collected.
/// It makes it possible for another process to safely consume
/// our index in-writing. Ideally, we may have prefered `RWLock` semantics
/// here, but it is difficult to achieve on Windows.
///
/// Opening segment readers is a very fast process.
pub static META_LOCK: Lazy<Lock> = Lazy::new(|| Lock {
filepath: PathBuf::from(".tantivy-meta.lock"),
is_blocking: true,
});

137
src/directory/error.rs
View File

@@ -1,8 +1,25 @@
use crate::Version;
use std::error::Error as StdError;
use std::fmt;
use std::io;
use std::path::PathBuf;
/// Error while trying to acquire a directory lock.
#[derive(Debug, Fail)]
pub enum LockError {
/// Failed to acquired a lock as it is already held by another
/// client.
/// - In the context of a blocking lock, this means the lock was not released within some `timeout` period.
/// - In the context of a non-blocking lock, this means the lock was busy at the moment of the call.
#[fail(
display = "Could not acquire lock as it is already held, possibly by a different process."
)]
LockBusy,
/// Trying to acquire a lock failed with an `IOError`
#[fail(display = "Failed to acquire the lock due to an io:Error.")]
IOError(io::Error),
}
/// General IO error with an optional path to the offending file.
#[derive(Debug)]
pub struct IOError {
@@ -10,8 +27,14 @@ pub struct IOError {
err: io::Error,
}
impl Into<io::Error> for IOError {
fn into(self) -> io::Error {
self.err
}
}
impl fmt::Display for IOError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self.path {
Some(ref path) => write!(f, "io error occurred on path '{:?}': '{}'", path, self.err),
None => write!(f, "io error occurred: '{}'", self.err),
@@ -24,7 +47,7 @@ impl StdError for IOError {
"io error occurred"
}
fn cause(&self) -> Option<&StdError> {
fn cause(&self) -> Option<&dyn StdError> {
Some(&self.err)
}
}
@@ -51,10 +74,18 @@ pub enum OpenDirectoryError {
DoesNotExist(PathBuf),
/// The path exists but is not a directory.
NotADirectory(PathBuf),
/// IoError
IoError(io::Error),
}
impl From<io::Error> for OpenDirectoryError {
fn from(io_err: io::Error) -> Self {
OpenDirectoryError::IoError(io_err)
}
}
impl fmt::Display for OpenDirectoryError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match *self {
OpenDirectoryError::DoesNotExist(ref path) => {
write!(f, "the underlying directory '{:?}' does not exist", path)
@@ -62,6 +93,11 @@ impl fmt::Display for OpenDirectoryError {
OpenDirectoryError::NotADirectory(ref path) => {
write!(f, "the path '{:?}' exists but is not a directory", path)
}
OpenDirectoryError::IoError(ref err) => write!(
f,
"IOError while trying to open/create the directory. {:?}",
err
),
}
}
}
@@ -71,7 +107,7 @@ impl StdError for OpenDirectoryError {
"error occurred while opening a directory"
}
fn cause(&self) -> Option<&StdError> {
fn cause(&self) -> Option<&dyn StdError> {
None
}
}
@@ -94,7 +130,7 @@ impl From<IOError> for OpenWriteError {
}
impl fmt::Display for OpenWriteError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match *self {
OpenWriteError::FileAlreadyExists(ref path) => {
write!(f, "the file '{:?}' already exists", path)
@@ -113,7 +149,7 @@ impl StdError for OpenWriteError {
"error occurred while opening a file for writing"
}
fn cause(&self) -> Option<&StdError> {
fn cause(&self) -> Option<&dyn StdError> {
match *self {
OpenWriteError::FileAlreadyExists(_) => None,
OpenWriteError::IOError(ref err) => Some(err),
@@ -121,6 +157,65 @@ impl StdError for OpenWriteError {
}
}
/// Type of index incompatibility between the library and the index found on disk
/// Used to catch and provide a hint to solve this incompatibility issue
pub enum Incompatibility {
/// This library cannot decompress the index found on disk
CompressionMismatch {
/// Compression algorithm used by the current version of tantivy
library_compression_format: String,
/// Compression algorithm that was used to serialise the index
index_compression_format: String,
},
/// The index format found on disk isn't supported by this version of the library
IndexMismatch {
/// Version used by the library
library_version: Version,
/// Version the index was built with
index_version: Version,
},
}
impl fmt::Debug for Incompatibility {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
match self {
Incompatibility::CompressionMismatch {
library_compression_format,
index_compression_format,
} => {
let err = format!(
"Library was compiled with {:?} compression, index was compressed with {:?}",
library_compression_format, index_compression_format
);
let advice = format!(
"Change the feature flag to {:?} and rebuild the library",
index_compression_format
);
write!(f, "{}. {}", err, advice)?;
}
Incompatibility::IndexMismatch {
library_version,
index_version,
} => {
let err = format!(
"Library version: {}, index version: {}",
library_version.index_format_version, index_version.index_format_version
);
// TODO make a more useful error message
// include the version range that supports this index_format_version
let advice = format!(
"Change tantivy to a version compatible with index format {} (e.g. {}.{}.x) \
and rebuild your project.",
index_version.index_format_version, index_version.major, index_version.minor
);
write!(f, "{}. {}", err, advice)?;
}
}
Ok(())
}
}
/// Error that may occur when accessing a file read
#[derive(Debug)]
pub enum OpenReadError {
@@ -129,6 +224,8 @@ pub enum OpenReadError {
/// Any kind of IO error that happens when
/// interacting with the underlying IO device.
IOError(IOError),
/// This library doesn't support the index version found on disk
IncompatibleIndex(Incompatibility),
}
impl From<IOError> for OpenReadError {
@@ -138,7 +235,7 @@ impl From<IOError> for OpenReadError {
}
impl fmt::Display for OpenReadError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match *self {
OpenReadError::FileDoesNotExist(ref path) => {
write!(f, "the file '{:?}' does not exist", path)
@@ -148,19 +245,9 @@ impl fmt::Display for OpenReadError {
"an io error occurred while opening a file for reading: '{}'",
err
),
}
}
}
impl StdError for OpenReadError {
fn description(&self) -> &str {
"error occurred while opening a file for reading"
}
fn cause(&self) -> Option<&StdError> {
match *self {
OpenReadError::FileDoesNotExist(_) => None,
OpenReadError::IOError(ref err) => Some(err),
OpenReadError::IncompatibleIndex(ref footer) => {
write!(f, "Incompatible index format: {:?}", footer)
}
}
}
}
@@ -181,8 +268,14 @@ impl From<IOError> for DeleteError {
}
}
impl From<Incompatibility> for OpenReadError {
fn from(incompatibility: Incompatibility) -> Self {
OpenReadError::IncompatibleIndex(incompatibility)
}
}
impl fmt::Display for DeleteError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match *self {
DeleteError::FileDoesNotExist(ref path) => {
write!(f, "the file '{:?}' does not exist", path)
@@ -199,7 +292,7 @@ impl StdError for DeleteError {
"error occurred while deleting a file"
}
fn cause(&self) -> Option<&StdError> {
fn cause(&self) -> Option<&dyn StdError> {
match *self {
DeleteError::FileDoesNotExist(_) => None,
DeleteError::IOError(ref err) => Some(err),

390
src/directory/footer.rs Normal file
View File

@@ -0,0 +1,390 @@
use crate::common::{BinarySerializable, CountingWriter, FixedSize, VInt};
use crate::directory::error::Incompatibility;
use crate::directory::read_only_source::ReadOnlySource;
use crate::directory::{AntiCallToken, TerminatingWrite};
use crate::Version;
use byteorder::{ByteOrder, LittleEndian, WriteBytesExt};
use crc32fast::Hasher;
use std::io;
use std::io::Write;
const FOOTER_MAX_LEN: usize = 10_000;
type CrcHashU32 = u32;
#[derive(Debug, Clone, PartialEq)]
pub struct Footer {
pub version: Version,
pub meta: String,
pub versioned_footer: VersionedFooter,
}
/// Serialises the footer to a byte-array
/// - versioned_footer_len : 4 bytes
///- versioned_footer: variable bytes
/// - meta_len: 4 bytes
/// - meta: variable bytes
/// - version_len: 4 bytes
/// - version json: variable bytes
impl BinarySerializable for Footer {
fn serialize<W: io::Write>(&self, writer: &mut W) -> io::Result<()> {
BinarySerializable::serialize(&self.versioned_footer, writer)?;
BinarySerializable::serialize(&self.meta, writer)?;
let version_string =
serde_json::to_string(&self.version).map_err(|_err| io::ErrorKind::InvalidInput)?;
BinarySerializable::serialize(&version_string, writer)?;
Ok(())
}
fn deserialize<R: io::Read>(reader: &mut R) -> io::Result<Self> {
let versioned_footer = VersionedFooter::deserialize(reader)?;
let meta = String::deserialize(reader)?;
let version_json = String::deserialize(reader)?;
let version = serde_json::from_str(&version_json)?;
Ok(Footer {
version,
meta,
versioned_footer,
})
}
}
impl Footer {
pub fn new(versioned_footer: VersionedFooter) -> Self {
let version = crate::VERSION.clone();
let meta = version.to_string();
Footer {
version,
meta,
versioned_footer,
}
}
pub fn append_footer<W: io::Write>(&self, mut write: &mut W) -> io::Result<()> {
let mut counting_write = CountingWriter::wrap(&mut write);
self.serialize(&mut counting_write)?;
let written_len = counting_write.written_bytes();
write.write_u32::<LittleEndian>(written_len as u32)?;
Ok(())
}
pub fn extract_footer(source: ReadOnlySource) -> Result<(Footer, ReadOnlySource), io::Error> {
if source.len() < 4 {
return Err(io::Error::new(
io::ErrorKind::UnexpectedEof,
format!(
"File corrupted. The file is smaller than 4 bytes (len={}).",
source.len()
),
));
}
let (body_footer, footer_len_bytes) = source.split_from_end(u32::SIZE_IN_BYTES);
let footer_len = LittleEndian::read_u32(footer_len_bytes.as_slice()) as usize;
let body_len = body_footer.len() - footer_len;
let (body, footer_data) = body_footer.split(body_len);
let mut cursor = footer_data.as_slice();
let footer = Footer::deserialize(&mut cursor)?;
Ok((footer, body))
}
/// Confirms that the index will be read correctly by this version of tantivy
/// Has to be called after `extract_footer` to make sure it's not accessing uninitialised memory
pub fn is_compatible(&self) -> Result<(), Incompatibility> {
let library_version = crate::version();
match &self.versioned_footer {
VersionedFooter::V1 {
crc32: _crc,
store_compression,
} => {
if &library_version.store_compression != store_compression {
return Err(Incompatibility::CompressionMismatch {
library_compression_format: library_version.store_compression.to_string(),
index_compression_format: store_compression.to_string(),
});
}
Ok(())
}
VersionedFooter::V2 {
crc32: _crc,
store_compression,
} => {
if &library_version.store_compression != store_compression {
return Err(Incompatibility::CompressionMismatch {
library_compression_format: library_version.store_compression.to_string(),
index_compression_format: store_compression.to_string(),
});
}
Ok(())
}
VersionedFooter::UnknownVersion => Err(Incompatibility::IndexMismatch {
library_version: library_version.clone(),
index_version: self.version.clone(),
}),
}
}
}
/// Footer that includes a crc32 hash that enables us to checksum files in the index
#[derive(Debug, Clone, PartialEq)]
pub enum VersionedFooter {
UnknownVersion,
V1 {
crc32: CrcHashU32,
store_compression: String,
},
// Introduction of the Block WAND information.
V2 {
crc32: CrcHashU32,
store_compression: String,
},
}
impl BinarySerializable for VersionedFooter {
fn serialize<W: io::Write>(&self, writer: &mut W) -> io::Result<()> {
let mut buf = Vec::new();
match self {
VersionedFooter::V2 {
crc32,
store_compression: compression,
} => {
// Serializes a valid `VersionedFooter` or panics if the version is unknown
// [ version | crc_hash | compression_mode ]
// [ 0..4 | 4..8 | variable ]
BinarySerializable::serialize(&2u32, &mut buf)?;
BinarySerializable::serialize(crc32, &mut buf)?;
BinarySerializable::serialize(compression, &mut buf)?;
}
VersionedFooter::V1 { .. } | VersionedFooter::UnknownVersion => {
return Err(io::Error::new(
io::ErrorKind::InvalidInput,
"Cannot serialize an unknown versioned footer ",
));
}
}
BinarySerializable::serialize(&VInt(buf.len() as u64), writer)?;
assert!(buf.len() <= FOOTER_MAX_LEN);
writer.write_all(&buf[..])?;
Ok(())
}
fn deserialize<R: io::Read>(reader: &mut R) -> io::Result<Self> {
let len = VInt::deserialize(reader)?.0 as usize;
if len > FOOTER_MAX_LEN {
return Err(io::Error::new(
io::ErrorKind::InvalidData,
format!(
"Footer seems invalid as it suggests a footer len of {}. File is corrupted, \
or the index was created with a different & old version of tantivy.",
len
),
));
}
let mut buf = vec![0u8; len];
reader.read_exact(&mut buf[..])?;
let mut cursor = &buf[..];
let version = u32::deserialize(&mut cursor)?;
if version != 1 && version != 2 {
return Ok(VersionedFooter::UnknownVersion);
}
let crc32 = u32::deserialize(&mut cursor)?;
let store_compression = String::deserialize(&mut cursor)?;
Ok(if version == 1 {
VersionedFooter::V1 {
crc32,
store_compression,
}
} else {
assert_eq!(version, 2);
VersionedFooter::V2 {
crc32,
store_compression,
}
})
}
}
impl VersionedFooter {
pub fn crc(&self) -> Option<CrcHashU32> {
match self {
VersionedFooter::V2 { crc32, .. } => Some(*crc32),
VersionedFooter::V1 { crc32, .. } => Some(*crc32),
VersionedFooter::UnknownVersion { .. } => None,
}
}
}
pub(crate) struct FooterProxy<W: TerminatingWrite> {
/// always Some except after terminate call
hasher: Option<Hasher>,
/// always Some except after terminate call
writer: Option<W>,
}
impl<W: TerminatingWrite> FooterProxy<W> {
pub fn new(writer: W) -> Self {
FooterProxy {
hasher: Some(Hasher::new()),
writer: Some(writer),
}
}
}
impl<W: TerminatingWrite> Write for FooterProxy<W> {
fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
let count = self.writer.as_mut().unwrap().write(buf)?;
self.hasher.as_mut().unwrap().update(&buf[..count]);
Ok(count)
}
fn flush(&mut self) -> io::Result<()> {
self.writer.as_mut().unwrap().flush()
}
}
impl<W: TerminatingWrite> TerminatingWrite for FooterProxy<W> {
fn terminate_ref(&mut self, _: AntiCallToken) -> io::Result<()> {
let crc32 = self.hasher.take().unwrap().finalize();
let footer = Footer::new(VersionedFooter::V2 {
crc32,
store_compression: crate::store::COMPRESSION.to_string(),
});
let mut writer = self.writer.take().unwrap();
footer.append_footer(&mut writer)?;
writer.terminate()
}
}
#[cfg(test)]
mod tests {
use super::CrcHashU32;
use super::FooterProxy;
use crate::common::{BinarySerializable, VInt};
use crate::directory::footer::{Footer, VersionedFooter};
use crate::directory::TerminatingWrite;
use byteorder::{ByteOrder, LittleEndian};
use regex::Regex;
use std::io;
#[test]
fn test_versioned_footer() {
let mut vec = Vec::new();
let footer_proxy = FooterProxy::new(&mut vec);
assert!(footer_proxy.terminate().is_ok());
assert_eq!(vec.len(), 167);
let footer = Footer::deserialize(&mut &vec[..]).unwrap();
assert!(matches!(
footer.versioned_footer,
VersionedFooter::V2 { store_compression, .. }
if store_compression == crate::store::COMPRESSION
));
assert_eq!(&footer.version, crate::version());
}
#[test]
fn test_serialize_deserialize_footer() {
let mut buffer = Vec::new();
let crc32 = 123456u32;
let footer: Footer = Footer::new(VersionedFooter::V2 {
crc32,
store_compression: "lz4".to_string(),
});
footer.serialize(&mut buffer).unwrap();
let footer_deser = Footer::deserialize(&mut &buffer[..]).unwrap();
assert_eq!(footer_deser, footer);
}
#[test]
fn footer_length() {
let crc32 = 1111111u32;
let versioned_footer = VersionedFooter::V2 {
crc32,
store_compression: "lz4".to_string(),
};
let mut buf = Vec::new();
versioned_footer.serialize(&mut buf).unwrap();
assert_eq!(buf.len(), 13);
let footer = Footer::new(versioned_footer);
let regex_ptn = Regex::new(
"tantivy v[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.{0,10}, index_format v[0-9]{1,5}",
)
.unwrap();
assert!(regex_ptn.is_match(&footer.meta));
}
#[test]
fn versioned_footer_from_bytes() {
let v_footer_bytes = vec![
// versionned footer length
12 | 128,
// index format version
2,
0,
0,
0,
// crc 32
12,
35,
89,
18,
// compression format
3 | 128,
b'l',
b'z',
b'4',
];
let mut cursor = &v_footer_bytes[..];
let versioned_footer = VersionedFooter::deserialize(&mut cursor).unwrap();
assert!(cursor.is_empty());
let expected_crc: u32 = LittleEndian::read_u32(&v_footer_bytes[5..9]) as CrcHashU32;
let expected_versioned_footer: VersionedFooter = VersionedFooter::V2 {
crc32: expected_crc,
store_compression: "lz4".to_string(),
};
assert_eq!(versioned_footer, expected_versioned_footer);
let mut buffer = Vec::new();
assert!(versioned_footer.serialize(&mut buffer).is_ok());
assert_eq!(&v_footer_bytes[..], &buffer[..]);
}
#[test]
fn versioned_footer_panic() {
let v_footer_bytes = vec![6u8 | 128u8, 3u8, 0u8, 0u8, 1u8, 0u8, 0u8];
let mut b = &v_footer_bytes[..];
let versioned_footer = VersionedFooter::deserialize(&mut b).unwrap();
assert!(b.is_empty());
let expected_versioned_footer = VersionedFooter::UnknownVersion;
assert_eq!(versioned_footer, expected_versioned_footer);
let mut buf = Vec::new();
assert!(versioned_footer.serialize(&mut buf).is_err());
}
#[test]
#[cfg(not(feature = "lz4"))]
fn compression_mismatch() {
let crc32 = 1111111u32;
let versioned_footer = VersionedFooter::V1 {
crc32,
store_compression: "lz4".to_string(),
};
let footer = Footer::new(versioned_footer);
let res = footer.is_compatible();
assert!(res.is_err());
}
#[test]
fn test_deserialize_too_large_footer() {
let mut buf = vec![];
assert!(FooterProxy::new(&mut buf).terminate().is_ok());
let mut long_len_buf = [0u8; 10];
let num_bytes = VInt(super::FOOTER_MAX_LEN as u64 + 1u64).serialize_into(&mut long_len_buf);
buf[0..num_bytes].copy_from_slice(&long_len_buf[..num_bytes]);
let err = Footer::deserialize(&mut &buf[..]).unwrap_err();
assert_eq!(err.kind(), io::ErrorKind::InvalidData);
assert_eq!(
err.to_string(),
"Footer seems invalid as it suggests a footer len of 10001. File is corrupted, \
or the index was created with a different & old version of tantivy."
);
}
}

373
src/directory/managed_directory.rs
View File

@@ -1,8 +1,16 @@
use core::MANAGED_FILEPATH;
use directory::error::{DeleteError, IOError, OpenReadError, OpenWriteError};
use directory::{ReadOnlySource, WritePtr};
use error::{ErrorKind, Result, ResultExt};
use serde_json;
use crate::core::MANAGED_FILEPATH;
use crate::directory::error::{DeleteError, IOError, LockError, OpenReadError, OpenWriteError};
use crate::directory::footer::{Footer, FooterProxy};
use crate::directory::DirectoryLock;
use crate::directory::GarbageCollectionResult;
use crate::directory::Lock;
use crate::directory::META_LOCK;
use crate::directory::{ReadOnlySource, WritePtr};
use crate::directory::{WatchCallback, WatchHandle};
use crate::error::DataCorruption;
use crate::Directory;
use crc32fast::Hasher;
use std::collections::HashSet;
use std::io;
use std::io::Write;
@@ -10,7 +18,17 @@ use std::path::{Path, PathBuf};
use std::result;
use std::sync::RwLockWriteGuard;
use std::sync::{Arc, RwLock};
use Directory;
/// Returns true iff the file is "managed".
/// Non-managed file are not subject to garbage collection.
///
/// Filenames that starts by a "." -typically locks-
/// are not managed.
fn is_managed(path: &Path) -> bool {
path.to_str()
.map(|p_str| !p_str.starts_with('.'))
.unwrap_or(true)
}
/// Wrapper of directories that keeps track of files created by Tantivy.
///
@@ -23,7 +41,7 @@ use Directory;
/// useful anymore.
#[derive(Debug)]
pub struct ManagedDirectory {
directory: Box<Directory>,
directory: Box<dyn Directory>,
meta_informations: Arc<RwLock<MetaInformation>>,
}
@@ -35,23 +53,28 @@ struct MetaInformation {
/// Saves the file containing the list of existing files
/// that were created by tantivy.
fn save_managed_paths(
directory: &mut Directory,
wlock: &RwLockWriteGuard<MetaInformation>,
directory: &mut dyn Directory,
wlock: &RwLockWriteGuard<'_, MetaInformation>,
) -> io::Result<()> {
let mut w = serde_json::to_vec(&wlock.managed_paths)?;
write!(&mut w, "\n")?;
writeln!(&mut w)?;
directory.atomic_write(&MANAGED_FILEPATH, &w[..])?;
Ok(())
}
impl ManagedDirectory {
/// Wraps a directory as managed directory.
pub fn new<Dir: Directory>(directory: Dir) -> Result<ManagedDirectory> {
pub fn wrap<Dir: Directory>(directory: Dir) -> crate::Result<ManagedDirectory> {
match directory.atomic_read(&MANAGED_FILEPATH) {
Ok(data) => {
let managed_files_json = String::from_utf8_lossy(&data);
let managed_files: HashSet<PathBuf> = serde_json::from_str(&managed_files_json)
.chain_err(|| ErrorKind::CorruptedFile(MANAGED_FILEPATH.clone()))?;
.map_err(|e| {
DataCorruption::new(
MANAGED_FILEPATH.to_path_buf(),
format!("Managed file cannot be deserialized: {:?}. ", e),
)
})?;
Ok(ManagedDirectory {
directory: Box::new(directory),
meta_informations: Arc::new(RwLock::new(MetaInformation {
@@ -64,6 +87,11 @@ impl ManagedDirectory {
meta_informations: Arc::default(),
}),
Err(OpenReadError::IOError(e)) => Err(From::from(e)),
Err(OpenReadError::IncompatibleIndex(incompatibility)) => {
// For the moment, this should never happen `meta.json`
// do not have any footer and cannot detect incompatibility.
Err(crate::TantivyError::IncompatibleIndex(incompatibility))
}
}
}
@@ -74,55 +102,78 @@ impl ManagedDirectory {
///
/// * `living_files` - List of files that are still used by the index.
///
/// The use a callback ensures that the list of living_files is computed
/// while we hold the lock on meta.
///
/// This method does not panick nor returns errors.
/// If a file cannot be deleted (for permission reasons for instance)
/// an error is simply logged, and the file remains in the list of managed
/// files.
pub fn garbage_collect<L: FnOnce() -> HashSet<PathBuf>>(&mut self, get_living_files: L) {
pub fn garbage_collect<L: FnOnce() -> HashSet<PathBuf>>(
&mut self,
get_living_files: L,
) -> crate::Result<GarbageCollectionResult> {
info!("Garbage collect");
let mut files_to_delete = vec![];
// It is crucial to get the living files after acquiring the
// read lock of meta informations. That way, we
// avoid the following scenario.
//
// 1) we get the list of living files.
// 2) someone creates a new file.
// 3) we start garbage collection and remove this file
// even though it is a living file.
//
// releasing the lock as .delete() will use it too.
{
// releasing the lock as .delete() will use it too.
let meta_informations_rlock = self.meta_informations
let meta_informations_rlock = self
.meta_informations
.read()
.expect("Managed directory rlock poisoned in garbage collect.");
// It is crucial to get the living files after acquiring the
// read lock of meta informations. That way, we
// avoid the following scenario.
//
// 1) we get the list of living files.
// 2) someone creates a new file.
// 3) we start garbage collection and remove this file
// even though it is a living file.
let living_files = get_living_files();
for managed_path in &meta_informations_rlock.managed_paths {
if !living_files.contains(managed_path) {
files_to_delete.push(managed_path.clone());
// The point of this second "file" lock is to enforce the following scenario
// 1) process B tries to load a new set of searcher.
// The list of segments is loaded
// 2) writer change meta.json (for instance after a merge or a commit)
// 3) gc kicks in.
// 4) gc removes a file that was useful for process B, before process B opened it.
match self.acquire_lock(&META_LOCK) {
Ok(_meta_lock) => {
let living_files = get_living_files();
for managed_path in &meta_informations_rlock.managed_paths {
if !living_files.contains(managed_path) {
files_to_delete.push(managed_path.clone());
}
}
}
Err(err) => {
error!("Failed to acquire lock for GC");
return Err(crate::TantivyError::from(err));
}
}
}
let mut failed_to_delete_files = vec![];
let mut deleted_files = vec![];
{
for file_to_delete in files_to_delete {
match self.delete(&file_to_delete) {
Ok(_) => {
info!("Deleted {:?}", file_to_delete);
deleted_files.push(file_to_delete);
}
Err(file_error) => {
match file_error {
DeleteError::FileDoesNotExist(_) => {
deleted_files.push(file_to_delete);
}
DeleteError::IOError(_) => {
if !cfg!(target_os = "windows") {
// On windows, delete is expected to fail if the file
// is mmapped.
error!("Failed to delete {:?}", file_to_delete);
}
for file_to_delete in files_to_delete {
match self.delete(&file_to_delete) {
Ok(_) => {
info!("Deleted {:?}", file_to_delete);
deleted_files.push(file_to_delete);
}
Err(file_error) => {
match file_error {
DeleteError::FileDoesNotExist(_) => {
deleted_files.push(file_to_delete.clone());
}
DeleteError::IOError(_) => {
failed_to_delete_files.push(file_to_delete.clone());
if !cfg!(target_os = "windows") {
// On windows, delete is expected to fail if the file
// is mmapped.
error!("Failed to delete {:?}", file_to_delete);
}
}
}
@@ -133,19 +184,21 @@ impl ManagedDirectory {
if !deleted_files.is_empty() {
// update the list of managed files by removing
// the file that were removed.
let mut meta_informations_wlock = self.meta_informations
let mut meta_informations_wlock = self
.meta_informations
.write()
.expect("Managed directory wlock poisoned (2).");
{
let managed_paths_write = &mut meta_informations_wlock.managed_paths;
for delete_file in &deleted_files {
managed_paths_write.remove(delete_file);
}
}
if save_managed_paths(self.directory.as_mut(), &meta_informations_wlock).is_err() {
error!("Failed to save the list of managed files.");
let managed_paths_write = &mut meta_informations_wlock.managed_paths;
for delete_file in &deleted_files {
managed_paths_write.remove(delete_file);
}
save_managed_paths(self.directory.as_mut(), &meta_informations_wlock)?;
}
Ok(GarbageCollectionResult {
deleted_files,
failed_to_delete_files,
})
}
/// Registers a file as managed
@@ -155,8 +208,17 @@ impl ManagedDirectory {
/// registering the filepath and creating the file
/// will not lead to garbage files that will
/// never get removed.
///
/// File starting by "." are reserved to locks.
/// They are not managed and cannot be subjected
/// to garbage collection.
fn register_file_as_managed(&mut self, filepath: &Path) -> io::Result<()> {
let mut meta_wlock = self.meta_informations
// Files starting by "." (e.g. lock files) are not managed.
if !is_managed(filepath) {
return Ok(());
}
let mut meta_wlock = self
.meta_informations
.write()
.expect("Managed file lock poisoned");
let has_changed = meta_wlock.managed_paths.insert(filepath.to_owned());
@@ -165,17 +227,60 @@ impl ManagedDirectory {
}
Ok(())
}
/// Verify checksum of a managed file
pub fn validate_checksum(&self, path: &Path) -> result::Result<bool, OpenReadError> {
let reader = self.directory.open_read(path)?;
let (footer, data) = Footer::extract_footer(reader)
.map_err(|err| IOError::with_path(path.to_path_buf(), err))?;
let mut hasher = Hasher::new();
hasher.update(data.as_slice());
let crc = hasher.finalize();
Ok(footer
.versioned_footer
.crc()
.map(|v| v == crc)
.unwrap_or(false))
}
/// List files for which checksum does not match content
pub fn list_damaged(&self) -> result::Result<HashSet<PathBuf>, OpenReadError> {
let mut hashset = HashSet::new();
let managed_paths = self
.meta_informations
.read()
.expect("Managed directory rlock poisoned in list damaged.")
.managed_paths
.clone();
for path in managed_paths.into_iter() {
if !self.validate_checksum(&path)? {
hashset.insert(path);
}
}
Ok(hashset)
}
}
impl Directory for ManagedDirectory {
fn open_read(&self, path: &Path) -> result::Result<ReadOnlySource, OpenReadError> {
self.directory.open_read(path)
let read_only_source = self.directory.open_read(path)?;
let (footer, reader) = Footer::extract_footer(read_only_source)
.map_err(|err| IOError::with_path(path.to_path_buf(), err))?;
footer.is_compatible()?;
Ok(reader)
}
fn open_write(&mut self, path: &Path) -> result::Result<WritePtr, OpenWriteError> {
self.register_file_as_managed(path)
.map_err(|e| IOError::with_path(path.to_owned(), e))?;
self.directory.open_write(path)
Ok(io::BufWriter::new(Box::new(FooterProxy::new(
self.directory
.open_write(path)?
.into_inner()
.map_err(|_| ())
.expect("buffer should be empty"),
))))
}
fn atomic_write(&mut self, path: &Path, data: &[u8]) -> io::Result<()> {
@@ -195,8 +300,12 @@ impl Directory for ManagedDirectory {
self.directory.exists(path)
}
fn box_clone(&self) -> Box<Directory> {
Box::new(self.clone())
fn acquire_lock(&self, lock: &Lock) -> result::Result<DirectoryLock, LockError> {
self.directory.acquire_lock(lock)
}
fn watch(&self, watch_callback: WatchCallback) -> crate::Result<WatchHandle> {
self.directory.watch(watch_callback)
}
}
@@ -209,98 +318,118 @@ impl Clone for ManagedDirectory {
}
}
#[cfg(feature = "mmap")]
#[cfg(test)]
mod tests {
mod tests_mmap_specific {
use super::*;
#[cfg(feature = "mmap")]
use directory::MmapDirectory;
use crate::directory::{Directory, ManagedDirectory, MmapDirectory, TerminatingWrite};
use std::collections::HashSet;
use std::fs::OpenOptions;
use std::io::Write;
use std::path::Path;
use tempdir::TempDir;
lazy_static! {
static ref TEST_PATH1: &'static Path = Path::new("some_path_for_test");
static ref TEST_PATH2: &'static Path = Path::new("some_path_for_test2");
}
use std::path::{Path, PathBuf};
use tempfile::TempDir;
#[test]
#[cfg(feature = "mmap")]
fn test_managed_directory() {
let tempdir = TempDir::new("index").unwrap();
let tempdir = TempDir::new().unwrap();
let tempdir_path = PathBuf::from(tempdir.path());
let test_path1: &'static Path = Path::new("some_path_for_test");
let test_path2: &'static Path = Path::new("some_path_for_test_2");
{
let mmap_directory = MmapDirectory::open(&tempdir_path).unwrap();
let mut managed_directory = ManagedDirectory::new(mmap_directory).unwrap();
{
let mut write_file = managed_directory.open_write(*TEST_PATH1).unwrap();
write_file.flush().unwrap();
}
{
managed_directory
.atomic_write(*TEST_PATH2, &vec![0u8, 1u8])
.unwrap();
}
{
assert!(managed_directory.exists(*TEST_PATH1));
assert!(managed_directory.exists(*TEST_PATH2));
}
{
let living_files: HashSet<PathBuf> =
[TEST_PATH1.to_owned()].into_iter().cloned().collect();
managed_directory.garbage_collect(|| living_files);
}
{
assert!(managed_directory.exists(*TEST_PATH1));
assert!(!managed_directory.exists(*TEST_PATH2));
}
let mut managed_directory = ManagedDirectory::wrap(mmap_directory).unwrap();
let write_file = managed_directory.open_write(test_path1).unwrap();
write_file.terminate().unwrap();
managed_directory
.atomic_write(test_path2, &[0u8, 1u8])
.unwrap();
assert!(managed_directory.exists(test_path1));
assert!(managed_directory.exists(test_path2));
let living_files: HashSet<PathBuf> = [test_path1.to_owned()].iter().cloned().collect();
assert!(managed_directory.garbage_collect(|| living_files).is_ok());
assert!(managed_directory.exists(test_path1));
assert!(!managed_directory.exists(test_path2));
}
{
let mmap_directory = MmapDirectory::open(&tempdir_path).unwrap();
let mut managed_directory = ManagedDirectory::new(mmap_directory).unwrap();
{
assert!(managed_directory.exists(*TEST_PATH1));
assert!(!managed_directory.exists(*TEST_PATH2));
}
{
let living_files: HashSet<PathBuf> = HashSet::new();
managed_directory.garbage_collect(|| living_files);
}
{
assert!(!managed_directory.exists(*TEST_PATH1));
assert!(!managed_directory.exists(*TEST_PATH2));
}
let mut managed_directory = ManagedDirectory::wrap(mmap_directory).unwrap();
assert!(managed_directory.exists(test_path1));
assert!(!managed_directory.exists(test_path2));
let living_files: HashSet<PathBuf> = HashSet::new();
assert!(managed_directory.garbage_collect(|| living_files).is_ok());
assert!(!managed_directory.exists(test_path1));
assert!(!managed_directory.exists(test_path2));
}
}
#[test]
#[cfg(feature = "mmap ")]
fn test_managed_directory_gc_while_mmapped() {
let tempdir = TempDir::new("index").unwrap();
let test_path1: &'static Path = Path::new("some_path_for_test");
let tempdir = TempDir::new().unwrap();
let tempdir_path = PathBuf::from(tempdir.path());
let living_files = HashSet::new();
let mmap_directory = MmapDirectory::open(&tempdir_path).unwrap();
let mut managed_directory = ManagedDirectory::new(mmap_directory).unwrap();
managed_directory
.atomic_write(*TEST_PATH1, &vec![0u8, 1u8])
.unwrap();
assert!(managed_directory.exists(*TEST_PATH1));
let mut managed_directory = ManagedDirectory::wrap(mmap_directory).unwrap();
let mut write = managed_directory.open_write(test_path1).unwrap();
write.write_all(&[0u8, 1u8]).unwrap();
write.terminate().unwrap();
assert!(managed_directory.exists(test_path1));
let _mmap_read = managed_directory.open_read(*TEST_PATH1).unwrap();
managed_directory.garbage_collect(|| living_files.clone());
let _mmap_read = managed_directory.open_read(test_path1).unwrap();
assert!(managed_directory
.garbage_collect(|| living_files.clone())
.is_ok());
if cfg!(target_os = "windows") {
// On Windows, gc should try and fail the file as it is mmapped.
assert!(managed_directory.exists(*TEST_PATH1));
assert!(managed_directory.exists(test_path1));
// unmap should happen here.
drop(_mmap_read);
// The file should still be in the list of managed file and
// eventually be deleted once mmap is released.
managed_directory.garbage_collect(|| living_files);
assert!(!managed_directory.exists(*TEST_PATH1));
assert!(managed_directory.garbage_collect(|| living_files).is_ok());
assert!(!managed_directory.exists(test_path1));
} else {
assert!(!managed_directory.exists(*TEST_PATH1));
assert!(!managed_directory.exists(test_path1));
}
}
#[test]
fn test_checksum() {
let test_path1: &'static Path = Path::new("some_path_for_test");
let test_path2: &'static Path = Path::new("other_test_path");
let tempdir = TempDir::new().unwrap();
let tempdir_path = PathBuf::from(tempdir.path());
let mmap_directory = MmapDirectory::open(&tempdir_path).unwrap();
let mut managed_directory = ManagedDirectory::wrap(mmap_directory).unwrap();
let mut write = managed_directory.open_write(test_path1).unwrap();
write.write_all(&[0u8, 1u8]).unwrap();
write.terminate().unwrap();
let mut write = managed_directory.open_write(test_path2).unwrap();
write.write_all(&[3u8, 4u8, 5u8]).unwrap();
write.terminate().unwrap();
let read_source = managed_directory.open_read(test_path2).unwrap();
assert_eq!(read_source.as_slice(), &[3u8, 4u8, 5u8]);
assert!(managed_directory.list_damaged().unwrap().is_empty());
let mut corrupted_path = tempdir_path.clone();
corrupted_path.push(test_path2);
let mut file = OpenOptions::new()
.write(true)
.open(&corrupted_path)
.unwrap();
file.write_all(&[255u8]).unwrap();
file.flush().unwrap();
drop(file);
let damaged = managed_directory.list_damaged().unwrap();
assert_eq!(damaged.len(), 1);
assert!(damaged.contains(test_path2));
}
}

498
src/directory/mmap_directory.rs
View File

@@ -1,12 +1,24 @@
use atomicwrites;
use common::make_io_err;
use directory::error::{DeleteError, IOError, OpenDirectoryError, OpenReadError, OpenWriteError};
use directory::shared_vec_slice::SharedVecSlice;
use directory::Directory;
use directory::ReadOnlySource;
use directory::WritePtr;
use fst::raw::MmapReadOnly;
use std::collections::hash_map::Entry as HashMapEntry;
use crate::core::META_FILEPATH;
use crate::directory::error::LockError;
use crate::directory::error::{
DeleteError, IOError, OpenDirectoryError, OpenReadError, OpenWriteError,
};
use crate::directory::read_only_source::BoxedData;
use crate::directory::AntiCallToken;
use crate::directory::Directory;
use crate::directory::DirectoryLock;
use crate::directory::Lock;
use crate::directory::ReadOnlySource;
use crate::directory::WatchCallback;
use crate::directory::WatchCallbackList;
use crate::directory::WatchHandle;
use crate::directory::{TerminatingWrite, WritePtr};
use fs2::FileExt;
use memmap::Mmap;
use notify::RawEvent;
use notify::RecursiveMode;
use notify::Watcher;
use serde::{Deserialize, Serialize};
use std::collections::HashMap;
use std::convert::From;
use std::fmt;
@@ -16,14 +28,22 @@ use std::io::{self, Seek, SeekFrom};
use std::io::{BufWriter, Read, Write};
use std::path::{Path, PathBuf};
use std::result;
use std::sync::mpsc::{channel, Receiver, Sender};
use std::sync::Arc;
use std::sync::Mutex;
use std::sync::RwLock;
use tempdir::TempDir;
use std::sync::Weak;
use std::thread;
use tempfile::TempDir;
/// Create a default io error given a string.
pub(crate) fn make_io_err(msg: String) -> io::Error {
io::Error::new(io::ErrorKind::Other, msg)
}
/// Returns None iff the file exists, can be read, but is empty (and hence
/// cannot be mmapped).
///
fn open_mmap(full_path: &Path) -> result::Result<Option<MmapReadOnly>, OpenReadError> {
/// cannot be mmapped)
fn open_mmap(full_path: &Path) -> result::Result<Option<Mmap>, OpenReadError> {
let file = File::open(full_path).map_err(|e| {
if e.kind() == io::ErrorKind::NotFound {
OpenReadError::FileDoesNotExist(full_path.to_owned())
@@ -32,7 +52,8 @@ fn open_mmap(full_path: &Path) -> result::Result<Option<MmapReadOnly>, OpenReadE
}
})?;
let meta_data = file.metadata()
let meta_data = file
.metadata()
.map_err(|e| IOError::with_path(full_path.to_owned(), e))?;
if meta_data.len() == 0 {
// if the file size is 0, it will not be possible
@@ -41,7 +62,7 @@ fn open_mmap(full_path: &Path) -> result::Result<Option<MmapReadOnly>, OpenReadE
return Ok(None);
}
unsafe {
MmapReadOnly::open(&file)
memmap::Mmap::map(&file)
.map(Some)
.map_err(|e| From::from(IOError::with_path(full_path.to_owned(), e)))
}
@@ -64,7 +85,7 @@ pub struct CacheInfo {
struct MmapCache {
counters: CacheCounters,
cache: HashMap<PathBuf, MmapReadOnly>,
cache: HashMap<PathBuf, Weak<BoxedData>>,
}
impl Default for MmapCache {
@@ -77,12 +98,7 @@ impl Default for MmapCache {
}
impl MmapCache {
/// Removes a `MmapReadOnly` entry from the mmap cache.
fn discard_from_cache(&mut self, full_path: &Path) -> bool {
self.cache.remove(full_path).is_some()
}
fn get_info(&mut self) -> CacheInfo {
fn get_info(&self) -> CacheInfo {
let paths: Vec<PathBuf> = self.cache.keys().cloned().collect();
CacheInfo {
counters: self.counters.clone(),
@@ -90,57 +106,175 @@ impl MmapCache {
}
}
fn get_mmap(&mut self, full_path: &Path) -> Result<Option<MmapReadOnly>, OpenReadError> {
Ok(match self.cache.entry(full_path.to_owned()) {
HashMapEntry::Occupied(occupied_entry) => {
let mmap = occupied_entry.get();
fn remove_weak_ref(&mut self) {
let keys_to_remove: Vec<PathBuf> = self
.cache
.iter()
.filter(|(_, mmap_weakref)| mmap_weakref.upgrade().is_none())
.map(|(key, _)| key.clone())
.collect();
for key in keys_to_remove {
self.cache.remove(&key);
}
}
// Returns None if the file exists but as a len of 0 (and hence is not mmappable).
fn get_mmap(&mut self, full_path: &Path) -> Result<Option<Arc<BoxedData>>, OpenReadError> {
if let Some(mmap_weak) = self.cache.get(full_path) {
if let Some(mmap_arc) = mmap_weak.upgrade() {
self.counters.hit += 1;
Some(mmap.clone())
return Ok(Some(mmap_arc));
}
HashMapEntry::Vacant(vacant_entry) => {
self.counters.miss += 1;
if let Some(mmap) = open_mmap(full_path)? {
vacant_entry.insert(mmap.clone());
Some(mmap)
} else {
None
}
self.cache.remove(full_path);
self.counters.miss += 1;
let mmap_opt = open_mmap(full_path)?;
Ok(mmap_opt.map(|mmap| {
let mmap_arc: Arc<BoxedData> = Arc::new(Box::new(mmap));
let mmap_weak = Arc::downgrade(&mmap_arc);
self.cache.insert(full_path.to_owned(), mmap_weak);
mmap_arc
}))
}
}
struct WatcherWrapper {
_watcher: Mutex<notify::RecommendedWatcher>,
watcher_router: Arc<WatchCallbackList>,
}
impl WatcherWrapper {
pub fn new(path: &Path) -> Result<Self, OpenDirectoryError> {
let (tx, watcher_recv): (Sender<RawEvent>, Receiver<RawEvent>) = channel();
// We need to initialize the
let watcher = notify::raw_watcher(tx)
.and_then(|mut watcher| {
watcher.watch(path, RecursiveMode::Recursive)?;
Ok(watcher)
})
.map_err(|err| match err {
notify::Error::PathNotFound => OpenDirectoryError::DoesNotExist(path.to_owned()),
_ => {
panic!("Unknown error while starting watching directory {:?}", path);
}
}
})?;
let watcher_router: Arc<WatchCallbackList> = Default::default();
let watcher_router_clone = watcher_router.clone();
thread::Builder::new()
.name("meta-file-watch-thread".to_string())
.spawn(move || {
loop {
match watcher_recv.recv().map(|evt| evt.path) {
Ok(Some(changed_path)) => {
// ... Actually subject to false positive.
// We might want to be more accurate than this at one point.
if let Some(filename) = changed_path.file_name() {
if filename == *META_FILEPATH {
let _ = watcher_router_clone.broadcast();
}
}
}
Ok(None) => {
// not an event we are interested in.
}
Err(_e) => {
// the watch send channel was dropped
break;
}
}
}
})?;
Ok(WatcherWrapper {
_watcher: Mutex::new(watcher),
watcher_router,
})
}
pub fn watch(&mut self, watch_callback: WatchCallback) -> WatchHandle {
self.watcher_router.subscribe(watch_callback)
}
}
/// Directory storing data in files, read via mmap.
///
/// The Mmap object are cached to limit the
/// system calls.
///
/// In the `MmapDirectory`, locks are implemented using the `fs2` crate definition of locks.
///
/// On MacOS & linux, it relies on `flock` (aka `BSD Lock`). These locks solve most of the
/// problems related to POSIX Locks, but may their contract may not be respected on `NFS`
/// depending on the implementation.
///
/// On Windows the semantics are again different.
#[derive(Clone)]
pub struct MmapDirectory {
inner: Arc<MmapDirectoryInner>,
}
struct MmapDirectoryInner {
root_path: PathBuf,
mmap_cache: Arc<RwLock<MmapCache>>,
_temp_directory: Arc<Option<TempDir>>,
mmap_cache: RwLock<MmapCache>,
_temp_directory: Option<TempDir>,
watcher: RwLock<Option<WatcherWrapper>>,
}
impl MmapDirectoryInner {
fn new(root_path: PathBuf, temp_directory: Option<TempDir>) -> MmapDirectoryInner {
MmapDirectoryInner {
root_path,
mmap_cache: Default::default(),
_temp_directory: temp_directory,
watcher: RwLock::new(None),
}
}
fn watch(&self, watch_callback: WatchCallback) -> crate::Result<WatchHandle> {
// a lot of juggling here, to ensure we don't do anything that panics
// while the rwlock is held. That way we ensure that the rwlock cannot
// be poisoned.
//
// The downside is that we might create a watch wrapper that is not useful.
let need_initialization = self.watcher.read().unwrap().is_none();
if need_initialization {
let watch_wrapper = WatcherWrapper::new(&self.root_path)?;
let mut watch_wlock = self.watcher.write().unwrap();
// the watcher could have been initialized when we released the lock, and
// we do not want to lose the watched files that were set.
if watch_wlock.is_none() {
*watch_wlock = Some(watch_wrapper);
}
}
if let Some(watch_wrapper) = self.watcher.write().unwrap().as_mut() {
Ok(watch_wrapper.watch(watch_callback))
} else {
unreachable!("At this point, watch wrapper is supposed to be initialized");
}
}
}
impl fmt::Debug for MmapDirectory {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "MmapDirectory({:?})", self.root_path)
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "MmapDirectory({:?})", self.inner.root_path)
}
}
impl MmapDirectory {
fn new(root_path: PathBuf, temp_directory: Option<TempDir>) -> MmapDirectory {
let inner = MmapDirectoryInner::new(root_path, temp_directory);
MmapDirectory {
inner: Arc::new(inner),
}
}
/// Creates a new MmapDirectory in a temporary directory.
///
/// This is mostly useful to test the MmapDirectory itself.
/// For your unit tests, prefer the RAMDirectory.
pub fn create_from_tempdir() -> io::Result<MmapDirectory> {
let tempdir = TempDir::new("index")?;
pub fn create_from_tempdir() -> Result<MmapDirectory, OpenDirectoryError> {
let tempdir = TempDir::new().map_err(OpenDirectoryError::IoError)?;
let tempdir_path = PathBuf::from(tempdir.path());
let directory = MmapDirectory {
root_path: tempdir_path,
mmap_cache: Arc::new(RwLock::new(MmapCache::default())),
_temp_directory: Arc::new(Some(tempdir)),
};
Ok(directory)
Ok(MmapDirectory::new(tempdir_path, Some(tempdir)))
}
/// Opens a MmapDirectory in a directory.
@@ -158,18 +292,14 @@ impl MmapDirectory {
directory_path,
)))
} else {
Ok(MmapDirectory {
root_path: PathBuf::from(directory_path),
mmap_cache: Arc::new(RwLock::new(MmapCache::default())),
_temp_directory: Arc::new(None),
})
Ok(MmapDirectory::new(PathBuf::from(directory_path), None))
}
}
/// Joins a relative_path to the directory `root_path`
/// to create a proper complete `filepath`.
fn resolve_path(&self, relative_path: &Path) -> PathBuf {
self.root_path.join(relative_path)
self.inner.root_path.join(relative_path)
}
/// Sync the root directory.
@@ -187,14 +317,14 @@ impl MmapDirectory {
#[cfg(windows)]
{
use std::os::windows::fs::OpenOptionsExt;
use winapi::winbase;
use winapi::um::winbase;
open_opts
.write(true)
.custom_flags(winbase::FILE_FLAG_BACKUP_SEMANTICS);
}
let fd = open_opts.open(&self.root_path)?;
let fd = open_opts.open(&self.inner.root_path)?;
fd.sync_all()?;
Ok(())
}
@@ -204,14 +334,35 @@ impl MmapDirectory {
///
/// The `MmapDirectory` embeds a `MmapDirectory`
/// to avoid multiplying the `mmap` system calls.
pub fn get_cache_info(&mut self) -> CacheInfo {
self.mmap_cache
pub fn get_cache_info(&self) -> CacheInfo {
self.inner
.mmap_cache
.write()
.expect("mmap cache lock is poisoned")
.remove_weak_ref();
self.inner
.mmap_cache
.read()
.expect("Mmap cache lock is poisoned.")
.get_info()
}
}
/// We rely on fs2 for file locking. On Windows & MacOS this
/// uses BSD locks (`flock`). The lock is actually released when
/// the `File` object is dropped and its associated file descriptor
/// is closed.
struct ReleaseLockFile {
_file: File,
path: PathBuf,
}
impl Drop for ReleaseLockFile {
fn drop(&mut self) {
debug!("Releasing lock {:?}", self.path);
}
}
/// This Write wraps a File, but has the specificity of
/// call `sync_all` on flush.
struct SafeFileWriter(File);
@@ -239,12 +390,18 @@ impl Seek for SafeFileWriter {
}
}
impl TerminatingWrite for SafeFileWriter {
fn terminate_ref(&mut self, _: AntiCallToken) -> io::Result<()> {
self.flush()
}
}
impl Directory for MmapDirectory {
fn open_read(&self, path: &Path) -> result::Result<ReadOnlySource, OpenReadError> {
debug!("Open Read {:?}", path);
let full_path = self.resolve_path(path);
let mut mmap_cache = self.mmap_cache.write().map_err(|_| {
let mut mmap_cache = self.inner.mmap_cache.write().map_err(|_| {
let msg = format!(
"Failed to acquired write lock \
on mmap cache while reading {:?}",
@@ -252,11 +409,33 @@ impl Directory for MmapDirectory {
);
IOError::with_path(path.to_owned(), make_io_err(msg))
})?;
Ok(mmap_cache
.get_mmap(&full_path)?
.map(ReadOnlySource::Mmap)
.unwrap_or_else(|| ReadOnlySource::Anonymous(SharedVecSlice::empty())))
.map(ReadOnlySource::from)
.unwrap_or_else(ReadOnlySource::empty))
}
/// Any entry associated to the path in the mmap will be
/// removed before the file is deleted.
fn delete(&self, path: &Path) -> result::Result<(), DeleteError> {
let full_path = self.resolve_path(path);
match fs::remove_file(&full_path) {
Ok(_) => self
.sync_directory()
.map_err(|e| IOError::with_path(path.to_owned(), e).into()),
Err(e) => {
if e.kind() == io::ErrorKind::NotFound {
Err(DeleteError::FileDoesNotExist(path.to_owned()))
} else {
Err(IOError::with_path(path.to_owned(), e).into())
}
}
}
}
fn exists(&self, path: &Path) -> bool {
let full_path = self.resolve_path(path);
full_path.exists()
}
fn open_write(&mut self, path: &Path) -> Result<WritePtr, OpenWriteError> {
@@ -289,43 +468,6 @@ impl Directory for MmapDirectory {
Ok(BufWriter::new(Box::new(writer)))
}
/// Any entry associated to the path in the mmap will be
/// removed before the file is deleted.
fn delete(&self, path: &Path) -> result::Result<(), DeleteError> {
debug!("Deleting file {:?}", path);
let full_path = self.resolve_path(path);
let mut mmap_cache = self.mmap_cache.write().map_err(|_| {
let msg = format!(
"Failed to acquired write lock \
on mmap cache while deleting {:?}",
path
);
IOError::with_path(path.to_owned(), make_io_err(msg))
})?;
mmap_cache.discard_from_cache(path);
// Removing the entry in the MMap cache.
// The munmap will appear on Drop,
// when the last reference is gone.
mmap_cache.cache.remove(&full_path);
match fs::remove_file(&full_path) {
Ok(_) => self.sync_directory()
.map_err(|e| IOError::with_path(path.to_owned(), e).into()),
Err(e) => {
if e.kind() == io::ErrorKind::NotFound {
Err(DeleteError::FileDoesNotExist(path.to_owned()))
} else {
Err(IOError::with_path(path.to_owned(), e).into())
}
}
}
}
fn exists(&self, path: &Path) -> bool {
let full_path = self.resolve_path(path);
full_path.exists()
}
fn atomic_read(&self, path: &Path) -> Result<Vec<u8>, OpenReadError> {
let full_path = self.resolve_path(path);
let mut buffer = Vec::new();
@@ -353,8 +495,28 @@ impl Directory for MmapDirectory {
Ok(())
}
fn box_clone(&self) -> Box<Directory> {
Box::new(self.clone())
fn acquire_lock(&self, lock: &Lock) -> Result<DirectoryLock, LockError> {
let full_path = self.resolve_path(&lock.filepath);
// We make sure that the file exists.
let file: File = OpenOptions::new()
.write(true)
.create(true) //< if the file does not exist yet, create it.
.open(&full_path)
.map_err(LockError::IOError)?;
if lock.is_blocking {
file.lock_exclusive().map_err(LockError::IOError)?;
} else {
file.try_lock_exclusive().map_err(|_| LockError::LockBusy)?
}
// dropping the file handle will release the lock.
Ok(DirectoryLock::from(Box::new(ReleaseLockFile {
path: lock.filepath.clone(),
_file: file,
})))
}
fn watch(&self, watch_callback: WatchCallback) -> crate::Result<WatchHandle> {
self.inner.watch(watch_callback)
}
}
@@ -365,6 +527,17 @@ mod tests {
// The following tests are specific to the MmapDirectory
use super::*;
use crate::indexer::LogMergePolicy;
use crate::schema::{Schema, SchemaBuilder, TEXT};
use crate::Index;
use crate::ReloadPolicy;
use std::fs;
use std::sync::atomic::{AtomicUsize, Ordering};
#[test]
fn test_open_non_existent_path() {
assert!(MmapDirectory::open(PathBuf::from("./nowhere")).is_err());
}
#[test]
fn test_open_empty() {
@@ -384,7 +557,7 @@ mod tests {
#[test]
fn test_cache() {
let content = "abc".as_bytes();
let content = b"abc";
// here we test if the cache releases
// mmaps correctly.
@@ -400,26 +573,117 @@ mod tests {
w.flush().unwrap();
}
}
{
for (i, path) in paths.iter().enumerate() {
let _r = mmap_directory.open_read(path).unwrap();
assert_eq!(mmap_directory.get_cache_info().mmapped.len(), i + 1);
}
for path in paths.iter() {
let _r = mmap_directory.open_read(path).unwrap();
assert_eq!(mmap_directory.get_cache_info().mmapped.len(), num_paths);
}
for (i, path) in paths.iter().enumerate() {
mmap_directory.delete(path).unwrap();
assert_eq!(
mmap_directory.get_cache_info().mmapped.len(),
num_paths - i - 1
);
}
let mut keep = vec![];
for (i, path) in paths.iter().enumerate() {
keep.push(mmap_directory.open_read(path).unwrap());
assert_eq!(mmap_directory.get_cache_info().mmapped.len(), i + 1);
}
assert_eq!(mmap_directory.get_cache_info().counters.hit, 0);
assert_eq!(mmap_directory.get_cache_info().counters.miss, 10);
assert_eq!(mmap_directory.get_cache_info().mmapped.len(), 10);
for path in paths.iter() {
let _r = mmap_directory.open_read(path).unwrap();
assert_eq!(mmap_directory.get_cache_info().mmapped.len(), num_paths);
}
assert_eq!(mmap_directory.get_cache_info().counters.hit, 10);
assert_eq!(mmap_directory.get_cache_info().counters.miss, 10);
assert_eq!(mmap_directory.get_cache_info().mmapped.len(), 10);
for path in paths.iter() {
let _r = mmap_directory.open_read(path).unwrap();
assert_eq!(mmap_directory.get_cache_info().mmapped.len(), 10);
}
assert_eq!(mmap_directory.get_cache_info().counters.hit, 20);
assert_eq!(mmap_directory.get_cache_info().counters.miss, 10);
assert_eq!(mmap_directory.get_cache_info().mmapped.len(), 10);
drop(keep);
for path in paths.iter() {
let _r = mmap_directory.open_read(path).unwrap();
assert_eq!(mmap_directory.get_cache_info().mmapped.len(), 1);
}
assert_eq!(mmap_directory.get_cache_info().counters.hit, 20);
assert_eq!(mmap_directory.get_cache_info().counters.miss, 20);
assert_eq!(mmap_directory.get_cache_info().mmapped.len(), 0);
for path in &paths {
mmap_directory.delete(path).unwrap();
}
assert_eq!(mmap_directory.get_cache_info().counters.hit, 20);
assert_eq!(mmap_directory.get_cache_info().counters.miss, 20);
assert_eq!(mmap_directory.get_cache_info().mmapped.len(), 0);
for path in paths.iter() {
assert!(mmap_directory.open_read(path).is_err());
}
assert_eq!(mmap_directory.get_cache_info().counters.hit, 20);
assert_eq!(mmap_directory.get_cache_info().counters.miss, 30);
assert_eq!(mmap_directory.get_cache_info().mmapped.len(), 0);
}
#[test]
fn test_watch_wrapper() {
let counter: Arc<AtomicUsize> = Default::default();
let counter_clone = counter.clone();
let tmp_dir = tempfile::TempDir::new().unwrap();
let tmp_dirpath = tmp_dir.path().to_owned();
let mut watch_wrapper = WatcherWrapper::new(&tmp_dirpath).unwrap();
let tmp_file = tmp_dirpath.join(*META_FILEPATH);
let _handle = watch_wrapper.watch(Box::new(move || {
counter_clone.fetch_add(1, Ordering::SeqCst);
}));
let (sender, receiver) = crossbeam::channel::unbounded();
let _handle2 = watch_wrapper.watch(Box::new(move || {
let _ = sender.send(());
}));
assert_eq!(counter.load(Ordering::SeqCst), 0);
fs::write(&tmp_file, b"whateverwilldo").unwrap();
assert!(receiver.recv().is_ok());
assert!(counter.load(Ordering::SeqCst) >= 1);
}
#[test]
fn test_mmap_released() {
let mmap_directory = MmapDirectory::create_from_tempdir().unwrap();
let mut schema_builder: SchemaBuilder = Schema::builder();
let text_field = schema_builder.add_text_field("text", TEXT);
let schema = schema_builder.build();
{
let index = Index::create(mmap_directory.clone(), schema).unwrap();
let mut index_writer = index.writer_with_num_threads(1, 3_000_000).unwrap();
let mut log_merge_policy = LogMergePolicy::default();
log_merge_policy.set_min_merge_size(3);
index_writer.set_merge_policy(Box::new(log_merge_policy));
for _num_commits in 0..10 {
for _ in 0..10 {
index_writer.add_document(doc!(text_field=>"abc"));
}
index_writer.commit().unwrap();
}
let reader = index
.reader_builder()
.reload_policy(ReloadPolicy::Manual)
.try_into()
.unwrap();
for _ in 0..4 {
index_writer.add_document(doc!(text_field=>"abc"));
index_writer.commit().unwrap();
reader.reload().unwrap();
}
index_writer.wait_merging_threads().unwrap();
reader.reload().unwrap();
let num_segments = reader.searcher().segment_readers().len();
assert!(num_segments <= 4);
assert_eq!(
num_segments * 7,
mmap_directory.get_cache_info().mmapped.len()
);
}
assert!(mmap_directory.get_cache_info().mmapped.is_empty());
}
}

199
src/directory/mod.rs
View File

@@ -8,158 +8,89 @@ WORM directory abstraction.
mod mmap_directory;
mod directory;
mod directory_lock;
mod footer;
mod managed_directory;
mod ram_directory;
mod read_only_source;
mod shared_vec_slice;
mod watch_event_router;
/// Errors specific to the directory module.
pub mod error;
use std::io::{BufWriter, Seek, Write};
pub use self::directory::Directory;
pub use self::directory::DirectoryLock;
pub use self::directory::{Directory, DirectoryClone};
pub use self::directory_lock::{Lock, INDEX_WRITER_LOCK, META_LOCK};
pub use self::ram_directory::RAMDirectory;
pub use self::read_only_source::ReadOnlySource;
pub use self::watch_event_router::{WatchCallback, WatchCallbackList, WatchHandle};
use std::io::{self, BufWriter, Write};
use std::path::PathBuf;
/// Outcome of the Garbage collection
pub struct GarbageCollectionResult {
/// List of files that were deleted in this cycle
pub deleted_files: Vec<PathBuf>,
/// List of files that were schedule to be deleted in this cycle,
/// but deletion did not work. This typically happens on windows,
/// as deleting a memory mapped file is forbidden.
///
/// If a searcher is still held, a file cannot be deleted.
/// This is not considered a bug, the file will simply be deleted
/// in the next GC.
pub failed_to_delete_files: Vec<PathBuf>,
}
#[cfg(feature = "mmap")]
pub use self::mmap_directory::MmapDirectory;
pub(crate) use self::managed_directory::ManagedDirectory;
pub use self::managed_directory::ManagedDirectory;
/// Synonym of Seek + Write
pub trait SeekableWrite: Seek + Write {}
impl<T: Seek + Write> SeekableWrite for T {}
/// Struct used to prevent from calling [`terminate_ref`](trait.TerminatingWrite#method.terminate_ref) directly
///
/// The point is that while the type is public, it cannot be built by anyone
/// outside of this module.
pub struct AntiCallToken(());
/// Trait used to indicate when no more write need to be done on a writer
pub trait TerminatingWrite: Write {
/// Indicate that the writer will no longer be used. Internally call terminate_ref.
fn terminate(mut self) -> io::Result<()>
where
Self: Sized,
{
self.terminate_ref(AntiCallToken(()))
}
/// You should implement this function to define custom behavior.
/// This function should flush any buffer it may hold.
fn terminate_ref(&mut self, _: AntiCallToken) -> io::Result<()>;
}
impl<W: TerminatingWrite + ?Sized> TerminatingWrite for Box<W> {
fn terminate_ref(&mut self, token: AntiCallToken) -> io::Result<()> {
self.as_mut().terminate_ref(token)
}
}
impl<W: TerminatingWrite> TerminatingWrite for BufWriter<W> {
fn terminate_ref(&mut self, a: AntiCallToken) -> io::Result<()> {
self.flush()?;
self.get_mut().terminate_ref(a)
}
}
#[cfg(test)]
impl<'a> TerminatingWrite for &'a mut Vec<u8> {
fn terminate_ref(&mut self, _a: AntiCallToken) -> io::Result<()> {
self.flush()
}
}
/// Write object for Directory.
///
/// `WritePtr` are required to implement both Write
/// and Seek.
pub type WritePtr = BufWriter<Box<SeekableWrite>>;
pub type WritePtr = BufWriter<Box<dyn TerminatingWrite>>;
#[cfg(test)]
mod tests {
use super::*;
use std::io::{Seek, SeekFrom, Write};
use std::path::Path;
lazy_static! {
static ref TEST_PATH: &'static Path = Path::new("some_path_for_test");
}
#[test]
fn test_ram_directory() {
let mut ram_directory = RAMDirectory::create();
test_directory(&mut ram_directory);
}
#[test]
#[cfg(feature = "mmap")]
fn test_mmap_directory() {
let mut mmap_directory = MmapDirectory::create_from_tempdir().unwrap();
test_directory(&mut mmap_directory);
}
#[test]
#[should_panic]
fn ram_directory_panics_if_flush_forgotten() {
let mut ram_directory = RAMDirectory::create();
let mut write_file = ram_directory.open_write(*TEST_PATH).unwrap();
assert!(write_file.write_all(&[4]).is_ok());
}
fn test_simple(directory: &mut Directory) {
{
{
let mut write_file = directory.open_write(*TEST_PATH).unwrap();
assert!(directory.exists(*TEST_PATH));
write_file.write_all(&[4]).unwrap();
write_file.write_all(&[3]).unwrap();
write_file.write_all(&[7, 3, 5]).unwrap();
write_file.flush().unwrap();
}
let read_file = directory.open_read(*TEST_PATH).unwrap();
let data: &[u8] = &*read_file;
assert_eq!(data, &[4u8, 3u8, 7u8, 3u8, 5u8]);
}
assert!(directory.delete(*TEST_PATH).is_ok());
assert!(!directory.exists(*TEST_PATH));
}
fn test_seek(directory: &mut Directory) {
{
{
let mut write_file = directory.open_write(*TEST_PATH).unwrap();
write_file.write_all(&[4, 3, 7, 3, 5]).unwrap();
write_file.seek(SeekFrom::Start(0)).unwrap();
write_file.write_all(&[3, 1]).unwrap();
write_file.flush().unwrap();
}
let read_file = directory.open_read(*TEST_PATH).unwrap();
let data: &[u8] = &*read_file;
assert_eq!(data, &[3u8, 1u8, 7u8, 3u8, 5u8]);
}
assert!(directory.delete(*TEST_PATH).is_ok());
}
fn test_rewrite_forbidden(directory: &mut Directory) {
{
directory.open_write(*TEST_PATH).unwrap();
assert!(directory.exists(*TEST_PATH));
}
{
assert!(directory.open_write(*TEST_PATH).is_err());
}
assert!(directory.delete(*TEST_PATH).is_ok());
}
fn test_write_create_the_file(directory: &mut Directory) {
{
assert!(directory.open_read(*TEST_PATH).is_err());
let _w = directory.open_write(*TEST_PATH).unwrap();
assert!(directory.exists(*TEST_PATH));
assert!(directory.open_read(*TEST_PATH).is_ok());
assert!(directory.delete(*TEST_PATH).is_ok());
}
}
fn test_directory_delete(directory: &mut Directory) {
assert!(directory.open_read(*TEST_PATH).is_err());
let mut write_file = directory.open_write(*TEST_PATH).unwrap();
write_file.write_all(&[1, 2, 3, 4]).unwrap();
write_file.flush().unwrap();
{
let read_handle = directory.open_read(*TEST_PATH).unwrap();
{
assert_eq!(&*read_handle, &[1u8, 2u8, 3u8, 4u8]);
// Mapped files can't be deleted on Windows
if !cfg!(windows) {
assert!(directory.delete(*TEST_PATH).is_ok());
assert_eq!(&*read_handle, &[1u8, 2u8, 3u8, 4u8]);
}
assert!(directory.delete(Path::new("SomeOtherPath")).is_err());
}
}
if cfg!(windows) {
assert!(directory.delete(*TEST_PATH).is_ok());
}
assert!(directory.open_read(*TEST_PATH).is_err());
assert!(directory.delete(*TEST_PATH).is_err());
}
fn test_directory(directory: &mut Directory) {
test_simple(directory);
test_seek(directory);
test_rewrite_forbidden(directory);
test_write_create_the_file(directory);
test_directory_delete(directory);
}
}
mod tests;

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