[jira] [Resolved] (LUCENE-7840) BooleanQuery.rewriteNoScoring - optimize away any SHOULD clauses if at least 1 MUST/FILTER clause and 0==minShouldMatch

["Jim Ferenczi (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCENE-7840?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jim Ferenczi resolved LUCENE-7840.
----------------------------------
       Resolution: Fixed
    Fix Version/s: 8.2
                   master (9.0)

Thanks [~atris]!

> BooleanQuery.rewriteNoScoring - optimize away any SHOULD clauses if at least 1 MUST/FILTER clause and 0==minShouldMatch
> -----------------------------------------------------------------------------------------------------------------------
>
>                 Key: LUCENE-7840
>                 URL: https://issues.apache.org/jira/browse/LUCENE-7840
>             Project: Lucene - Core
>          Issue Type: Task
>            Reporter: Hoss Man
>            Priority: Major
>             Fix For: master (9.0), 8.2
>
>         Attachments: LUCENE-7840.patch, LUCENE-7840.patch, LUCENE-7840.patch
>
>
> I haven't thought this through completely, let alone write up a patch / test case, but IIUC...
> We should be able to optimize  {{ BooleanQuery rewriteNoScoring() }} so that (after converting MUST clauses to FILTER clauses) we can check for the common case of {{0==getMinimumNumberShouldMatch()}} and throw away any SHOULD clauses as long as there is is at least one FILTER clause.



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