David Smiley created LUCENE-6720:
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             Summary: new FunctionRangeQuery, plus ValueSourceScorer 
improvements
                 Key: LUCENE-6720
                 URL: https://issues.apache.org/jira/browse/LUCENE-6720
             Project: Lucene - Core
          Issue Type: Bug
            Reporter: David Smiley
            Assignee: David Smiley


This issue provides a new FunctionRangeQuery, which is basically a wrapper 
around ValueSourceScorer (retrieved from FunctionValues.getRangeScorer).  It 
replaces ValueSourceFilter in the spatial module.  Solr has a class by the same 
name which is similar but isn't suitable to being ported.

Also, it includes refactorings to the ValueSourceScorer, to include performance 
enhancements by making it work with the TwoPhaseIterator API.

note: I posted this to LUCENE-4251 initially but then felt it's really its own 
issue.



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