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From "paul.elschot (JIRA)" <j...@apache.org>
Subject [jira] Closed: (LUCENE-333) [PATCH] BooleanScorer can score documents in non increasing order
Date Mon, 15 May 2006 20:17:11 GMT
     [ http://issues.apache.org/jira/browse/LUCENE-333?page=all ]
     
paul.elschot closed LUCENE-333:
-------------------------------

    Resolution: Later
     Assign To:     (was: Lucene Developers)

The only reason this issue is still open is that it contains some code that might
be useful for implementing disjunctions. I just left a reference there (performance of
DisjunctionSumScorer), so this can be closed as "later".


> [PATCH] BooleanScorer can score documents in non increasing order
> -----------------------------------------------------------------
>
>          Key: LUCENE-333
>          URL: http://issues.apache.org/jira/browse/LUCENE-333
>      Project: Lucene - Java
>         Type: Bug

>   Components: Search
>     Versions: CVS Nightly - Specify date in submission
>  Environment: Operating System: other
> Platform: Other
>     Reporter: paul.elschot
>     Priority: Minor
>  Attachments: BooleanQueryPatch4.txt, BooleanScorer.java, BooleanScorer.java, BooleanScorer1.java,
BooleanScorer1.java, BooleanScorerPatch1.txt, TestBoolean2Patch4.txt
>
> This has been the subject of occasional discussions on lucene-dev 
> since quite some time. Doug once called this "arguably a bug" 
> so I'm giving a minor severity. 
>  
> It should be noted that this behaviour of BooleanScorer does not 
> cause bugs in the current versions of Lucene. 
>  
> The main reason I'm entering it now is that it blocks the introduction 
> of filters based on other more compact data structures than 
> java.util.BitSet (see bug 32965). 
>  
> An alternative scorer for BooleanQuery is available that always 
> scores documents in increasing document order (see bug 31785). 
> It might also be possible to improve the current BooleanScorer 
> to always score documents in increasing order. 
>  
> A somewhat related problem is that the current BooleanScorer does 
> not implement skipTo(). 
>  
> Regards, 
> Paul Elschot

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