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From "Michael Busch (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (LUCENE-1134) BooleanQuery.rewrite does not work properly for minNumberShouldMatch
Date Sun, 03 Feb 2008 08:22:09 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-1134?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Michael Busch resolved LUCENE-1134.
-----------------------------------

       Resolution: Fixed
    Lucene Fields: [New, Patch Available]  (was: [Patch Available, New])

Committed. Thanks, Shai!

> BooleanQuery.rewrite does not work properly for minNumberShouldMatch
> --------------------------------------------------------------------
>
>                 Key: LUCENE-1134
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1134
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: Search
>    Affects Versions: 2.4
>            Reporter: Shai Erera
>            Priority: Minor
>         Attachments: LUCENE-1134.patch
>
>
> BooleanQuery.rewrite does not respect minNumberShouldMatch if the number of clauses is
1. This causes inconsistencies for the queries "+def" and "+abc +def", while setting the minNumShouldMatch
to '1' for both.
> For the first query, results are returned although there are no SHOULD clauses in the
query.
> For the second query no results are returned.
> The reason lies in the optimization BooleanQuery.rewrite has for one clauses queries.
> Patch included - optimize the query for a single clause only if the minNumShouldMatch
<= 0.

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