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From "Michael McCandless (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-4023) Scorer.visitSubScorers() is protected which make it impossible to implement it on a composite scorer in another package; DisjunctionMaxScorer does not implement it
Date Thu, 26 Apr 2012 12:42:18 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-4023?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13262572#comment-13262572
] 

Michael McCandless commented on LUCENE-4023:
--------------------------------------------

+1
                
> Scorer.visitSubScorers() is protected which make it impossible to implement it on a composite
scorer in another package; DisjunctionMaxScorer does not implement it
> -------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: LUCENE-4023
>                 URL: https://issues.apache.org/jira/browse/LUCENE-4023
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: core/search
>    Affects Versions: 3.1, 3.2, 3.3, 3.4, 3.5, 3.6
>            Reporter: Uwe Schindler
>            Assignee: Uwe Schindler
>             Fix For: 3.6.1
>
>         Attachments: LUCENE-4023.patch
>
>
> Scorer.visitSubScorers() is protected which make it impossible to implement it on a composite
scorer in another package.
> I came around this issue when I tried to write a workaround for the 2nd problem of this
issue: DisjunctionMaxScorer does not implement visitSubScorers():
> If you write a Scorer in another package than o.a.l.search and implement visit subScorers(),
you may need to call the visitSubScorers method recursively on your leaves (sub-scorers).
But this is not possible, as the method is protected.
> This issue should also fix the missing implementation of visitSubScorers in DisjMaxQuery.

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