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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