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From "Robert Muir (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-3609) BooleanFilter changed behavior in 3.5, no longer acts as if "minimum should match" set to 1
Date Tue, 29 Nov 2011 19:39:40 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-3609?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13159480#comment-13159480
] 

Robert Muir commented on LUCENE-3609:
-------------------------------------

{quote}
For example, a single must clause and should clause, with the should clause not matching anything,
should not match anything, but, it will match whatever the must clause matches.
{quote}

Wait, this sounds correct.

If you have a MUST clause and a SHOULD clause, then the SHOULD clause is totally irrelevant
(from boolean logic).

                
> BooleanFilter changed behavior in 3.5, no longer acts as if "minimum should match" set
to 1
> -------------------------------------------------------------------------------------------
>
>                 Key: LUCENE-3609
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3609
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: core/search
>    Affects Versions: 3.5
>            Reporter: Shay Banon
>            Assignee: Uwe Schindler
>
> The change LUCENE-3446 causes a change in behavior in BooleanFilter. It used to work
as if minimum should match clauses is 1 (compared to BQ lingo), but now, if no should clauses
match, then the should clauses are ignored, and for example, if there is a must clause, only
that one will be used and returned.
> For example, a single must clause and should clause, with the should clause not matching
anything, should not match anything, but, it will match whatever the must clause matches.
> The fix is simple, after iterating over the should clauses, if the aggregated bitset
is null, return null.

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