[jira] [Commented] (LUCENE-10618) Implement BooleanQuery rewrite rules based for minimumShouldMatch

["fang hou (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/LUCENE-10618?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17554640#comment-17554640 ] 

fang hou commented on LUCENE-10618:
-----------------------------------

hi [~jpountz] i'm new to lucene, do you mind if i take this issue? and do you think it's appropriate for a beginner to start from this?

> Implement BooleanQuery rewrite rules based for minimumShouldMatch
> -----------------------------------------------------------------
>
>                 Key: LUCENE-10618
>                 URL: https://issues.apache.org/jira/browse/LUCENE-10618
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Adrien Grand
>            Priority: Minor
>
> While looking into a test failure I noticed that we sometimes create weights for boolean queries with no SHOULD clauses and a non-zero minimumNumberShouldMatch.
> We could rewrite BooleanQuery to MatchNoDocsQuery when the number of SHOULD clauses is less than minimumNumberShouldMatch, and make SHOULD clauses required when the number of SHOULD clauses is equal to minimumNumberShouldMatch.
> This feels a bit like a degenerate case (why would the use create such a query in the first place?) but this case can also happen to non-degenerate queries if some SHOULD clauses rewrite to a MatchNoDocsQuery and get removed through rewrite.



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