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tantivy/src/aggregation
PSeitz 74940e9345 clippy (#2349)
* fix clippy

* fix clippy

* fix duplicate imports
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Contributing

When adding new bucket aggregation make sure to extend the "test_aggregation_flushing" test for at least 2 levels.

Code Organization

Tantivy's aggregations have been designed to mimic the aggregations of elasticsearch.

The code is organized in submodules:

bucket

Contains all bucket aggregations, like range aggregation. These bucket aggregations group documents into buckets and can contain sub-aggregations.

metric

Contains all metric aggregations, like average aggregation. Metric aggregations do not have sub aggregations.

agg_req

agg_req contains the users aggregation request. Deserialization from json is compatible with elasticsearch aggregation requests.

agg_req_with_accessor

agg_req_with_accessor contains the users aggregation request enriched with fast field accessors etc, which are used during collection.

segment_agg_result

segment_agg_result contains the aggregation result tree, which is used for collection of a segment. The tree from agg_req_with_accessor is passed during collection.

intermediate_agg_result

intermediate_agg_result contains the aggregation tree for merging with other trees.

agg_result

agg_result contains the final aggregation tree.