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https://issues.apache.org/jira/browse/LUCENE-4236?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Uwe Schindler updated LUCENE-4236:
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Fix Version/s: (was: 4.3)
4.4
> clean up booleanquery conjunction optimizations a bit
> -----------------------------------------------------
>
> Key: LUCENE-4236
> URL: https://issues.apache.org/jira/browse/LUCENE-4236
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Robert Muir
> Fix For: 4.4
>
> Attachments: LUCENE-4236.patch, LUCENE-4236.patch, LUCENE-4236.patch,
> LUCENE-4236.patch
>
>
> After LUCENE-3505, I want to do a slight cleanup:
> * compute the term conjunctions optimization in scorer(), so its applied even
> if we have optional and prohibited clauses that dont exist in the segment
> (e.g. return null)
> * use the term conjunctions optimization when optional.size() ==
> minShouldMatch, as that means they are all mandatory, too.
> * don't return booleanscorer1 when optional.size() == minShouldMatch, because
> it means we have required clauses and in general BS2 should do a much better
> job (e.g. use advance).
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