Tantivy used to assume that all files could be somehow memory mapped. After this change, Directory return a `FileSlice` that can be reduced and eventually read into an `OwnedBytes` object. Long and blocking io operation are still required by they do not span over the entire file.
- 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 `Scorer::skip(target)` has been replaced by `Scorer::seek(target)` and returns the resulting DocId.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)
* 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
* 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
* 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.
* 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
* 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
* 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)
* 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.
* Changed the heap to a paged memory arena.
* Trying to simplify the indexing term hashmap
* Exploding datastruct
* Removed some complexity in bitpacker
