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Posted to dev@lucene.apache.org by "Michael Braun (JIRA)" <ji...@apache.org> on 2018/02/11 16:48:00 UTC

[jira] [Updated] (LUCENE-8127) BooleanQuery with needsScores=false, rewriteNoScoring improvement

     [ https://issues.apache.org/jira/browse/LUCENE-8127?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael Braun updated LUCENE-8127:
----------------------------------
    Attachment: LUCENE-8127.patch

> BooleanQuery with needsScores=false, rewriteNoScoring improvement
> -----------------------------------------------------------------
>
>                 Key: LUCENE-8127
>                 URL: https://issues.apache.org/jira/browse/LUCENE-8127
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Michael Braun
>            Priority: Minor
>         Attachments: LUCENE-8127.patch
>
>
> In the case needsScores=false, createWeight calls rewriteNoScoring before creating a new BooleanWeight. This in all cases creates a new BooleanQuery, even when it's not necessary (aka there are no MUST clauses). 
> The rewriteNoScoring method could check for something as simple as if (clauseSets.get(Occur.MUST).size() > 0)  before creating a brand new BooleanQuery. 



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