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From "Kyle Maxwell (JIRA)" <j...@apache.org>
Subject [jira] Created: (LUCENE-1019) CustomScoreQuery should support multiple ValueSourceQueries
Date Fri, 05 Oct 2007 01:06:50 GMT
CustomScoreQuery should support multiple ValueSourceQueries
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                 Key: LUCENE-1019
                 URL: https://issues.apache.org/jira/browse/LUCENE-1019
             Project: Lucene - Java
          Issue Type: Improvement
          Components: Search
    Affects Versions: 2.2
            Reporter: Kyle Maxwell


CustomScoreQuery's constructor currently accepts a subQuery, and a ValueSourceQuery.  I would
like it to accept multiple ValueSourceQueries.  The workaround of nested CustomScoreQueries
works for simple cases, but it quickly becomes either cumbersome to manage, or impossible
to implement the desired function.

This patch implements CustomMultiScoreQuery with my desired functionality, and refactors CustomScoreQuery
to implement the special case of a CustomMultiScoreQuery with 0 or 1 ValueSourceQueries. 
This keeps the CustomScoreQuery API intact.

This patch includes basic tests, more or less taken from the original implementation, and
customized a bit to cover the new cases.

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