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Posted to issues@lucene.apache.org by "Adrien Grand (Jira)" <ji...@apache.org> on 2021/09/20 08:29:00 UTC

[jira] [Updated] (LUCENE-9620) Add Weight#count(LeafReaderContext)

     [ https://issues.apache.org/jira/browse/LUCENE-9620?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Adrien Grand updated LUCENE-9620:
---------------------------------
    Fix Version/s:     (was: 8.10)
                   main (9.0)

> 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
>            Priority: Minor
>             Fix For: main (9.0)
>
>          Time Spent: 4h 40m
>  Remaining Estimate: 0h
>
> 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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