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Posted to dev@lucene.apache.org by "Yonik Seeley (JIRA)" <ji...@apache.org> on 2005/11/12 03:50:03 UTC
[jira] Commented: (LUCENE-383) ConstantScoreRangeQuery - fixes "too many clauses" exception
[ http://issues.apache.org/jira/browse/LUCENE-383?page=comments#action_12357473 ]
Yonik Seeley commented on LUCENE-383:
-------------------------------------
Cool, thanks for the tests!
You are getting the raw score from the HitCollector all right. The internal score is equal to the boost, but there is also a query normalization factor that's applied...
Query.weight() calls Weight.sumOfSquaredWeights() which returns boost*boost.
Then it calls Similarity.queryNorm(boost*boost) which returns 1/boost
Then it calls Weight.normalize(1/boost), and I multiply 1/boost by boost and get 1.0
> ConstantScoreRangeQuery - fixes "too many clauses" exception
> ------------------------------------------------------------
>
> Key: LUCENE-383
> URL: http://issues.apache.org/jira/browse/LUCENE-383
> Project: Lucene - Java
> Type: Bug
> Components: Search
> Versions: 1.4
> Environment: Operating System: other
> Platform: Other
> Reporter: Yonik Seeley
> Assignee: Lucene Developers
> Attachments: ConstantScoreQuery.java, ConstantScoreQuery.java, ConstantScoreRangeQuery.java, ConstantScoreRangeQuery.java, TestConstantScoreRangeQuery.java
>
> ConstantScoreQuery wraps a filter (representing a set of documents) and returns
> a constant score for each document in the set.
> ConstantScoreRangeQuery implements a RangeQuery that works for any number of
> terms in the range. It rewrites to a ConstantScoreQuery that wraps a RangeFilter.
> Still needed:
> - unit tests (these classes have been tested and work fine in-house, but the
> current tests rely on too much application specific code)
> - code review of Weight() implementation (I'm unsure If I got all the score
> normalization stuff right)
> - explain() implementation
> NOTE: requires Java 1.4 for BitSet.nextSetBit()
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