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https://issues.apache.org/jira/browse/LUCENE-850?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12523979
]
Mike Klaas commented on LUCENE-850:
-----------------------------------
Do address the issue above, the following needs to be added:
===================================================================
--- build-src/java/solr/org/apache/lucene/search/CustomBoostQuery.java
(revision 9312)
+++ build-src/java/solr/org/apache/lucene/search/CustomBoostQuery.java
(working copy)
@@ -280,7 +280,7 @@
/*(non-Javadoc) @see org.apache.lucene.search.Scorer#score() */
public float score() throws IOException {
- float boostScore = (boostScorer==null ? 1 : boostScorer.score());
+ float boostScore = (boostScorer==null || subQueryScorer.doc() !=
boostScorer.doc() ? 1 : boos
tScorer.score());
return qWeight * customScore(subQueryScorer.doc(),
subQueryScorer.score(), boostScore);
}
@@ -300,7 +300,8 @@
return subQueryExpl;
}
// match
- Explanation boostExpl = boostScorer==null ? null :
boostScorer.explain(doc);
+ Explanation boostExpl = boostScorer==null ? null :
+ weight.qStrict ? boostScorer.explain(doc) :
weight.boostWeight.explain(reader,doc);
Explanation customExp = customExplain(doc,subQueryExpl,boostExpl);
float sc = qWeight * customExp.getValue();
Explanation res = new ComplexExplanation(
> Easily create queries that transform subquery scores arbitrarily
> ----------------------------------------------------------------
>
> Key: LUCENE-850
> URL: https://issues.apache.org/jira/browse/LUCENE-850
> Project: Lucene - Java
> Issue Type: New Feature
> Components: Search
> Reporter: Mike Klaas
> Attachments: CustomBoostQuery.java, prodscorer.patch.diff
>
>
> Refactor DisMaxQuery into SubQuery(Query|Scorer) that admits easy
> subclassing. An example is given for multiplicatively combining scores.
> Note: patch is not clean; for demonstration purposes only.
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