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From "Robert Muir (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (LUCENE-4236) clean up booleanquery conjunction optimizations a bit
Date Thu, 19 Jul 2012 01:54:34 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-4236?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Robert Muir updated LUCENE-4236:
--------------------------------

    Attachment: LUCENE-4236.patch
    
> clean up booleanquery conjunction optimizations a bit
> -----------------------------------------------------
>
>                 Key: LUCENE-4236
>                 URL: https://issues.apache.org/jira/browse/LUCENE-4236
>             Project: Lucene - Java
>          Issue Type: Improvement
>            Reporter: Robert Muir
>             Fix For: 4.0, 5.0
>
>         Attachments: 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).
I have no idea if this is the problem in SOLR-3636.

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