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Date: Thu, 30 Jun 2011 02:33:28 +0000 (UTC)
From: "Chris Male (JIRA)" <jira@apache.org>
To: dev@lucene.apache.org
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Subject: [jira] [Resolved] (LUCENE-3256) Consolidate CustomScoreQuery,
 ValueSourceQuery and BoostedQuery
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     [ https://issues.apache.org/jira/browse/LUCENE-3256?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chris Male resolved LUCENE-3256.
--------------------------------

    Resolution: Fixed
      Assignee: Chris Male

Committed revision 1141366.

> Consolidate CustomScoreQuery, ValueSourceQuery and BoostedQuery 
> ----------------------------------------------------------------
>
>                 Key: LUCENE-3256
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3256
>             Project: Lucene - Java
>          Issue Type: Sub-task
>          Components: core/search
>            Reporter: Chris Male
>            Assignee: Chris Male
>             Fix For: 4.0
>
>         Attachments: LUCENE-3256.patch, LUCENE-3256.patch, LUCENE-3256.patch
>
>
> Lucene's CustomScoreQuery and Solr's BoostedQuery do essentially the same thing: they boost the scores of Documents by the value from a ValueSource.  BoostedQuery does this in a direct fashion, by accepting a ValueSource. CustomScoreQuery on the other hand, accepts a series of ValueSourceQuerys.  ValueSourceQuery seems to do exactly the same thing as FunctionQuery.
> With Lucene's ValueSource being deprecated / removed, we need to resolve these dependencies and simplify the code.
> Therefore I recommend we do the following things:
> - Move CustomScoreQuery (and CustomScoreProvider) to the new Queries module and change it over to use FunctionQuerys instead of ValueSourceQuerys.  
> - Deprecate Solr's BoostedQuery in favour of the new CustomScoreQuery.  CSQ provides a lot of support for customizing the scoring process.
> - Move and consolidate all tests of CSQ and BoostedQuery, to the Queries module and have them test CSQ instead.

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