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Posted to issues@lucene.apache.org by "Adrien Grand (Jira)" <ji...@apache.org> on 2020/11/23 08:57:00 UTC
[jira] [Created] (LUCENE-9620) Add Weight#count(LeafReaderContext)
Adrien Grand created LUCENE-9620:
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Summary: Add Weight#count(LeafReaderContext)
Key: LUCENE-9620
URL: https://issues.apache.org/jira/browse/LUCENE-9620
Project: Lucene - Core
Issue Type: Improvement
Reporter: Adrien Grand
We have IndexSearcher#count today, which tries to optimize counting for TermQuery and MatchAllDocsQuery, and falls back to BulkScorer + TotalHitCountCollector otherwise.
I'm considering moving this to Weight instead, where it'd be a better place to add counting optimizations for other queries, e.g. pure disjunctions over single-valued fields or range queries on points. The default implementation could use a BulkScorer+TotalHitCountCollector like IndexSearcher#count does today.
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