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From "Robert Muir (JIRA)" <>
Subject [jira] Updated: (LUCENE-2261) configurable MultiTermQuery TopTermsScoringBooleanRewrite pq size
Date Thu, 11 Feb 2010 19:40:28 GMT


Robert Muir updated LUCENE-2261:

    Attachment: LUCENE-2261.patch

sorry, i created a javadoc warning, (TOP_TERMS singleton was referenced in the top of mtq
javadocs). here is the fix

> configurable MultiTermQuery TopTermsScoringBooleanRewrite pq size
> -----------------------------------------------------------------
>                 Key: LUCENE-2261
>                 URL:
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Search
>            Reporter: Robert Muir
>            Priority: Minor
>             Fix For: Flex Branch, 3.1
>         Attachments: LUCENE-2261.patch, LUCENE-2261.patch, LUCENE-2261.patch, LUCENE-2261.patch
> MultiTermQuery has a TopTermsScoringBooleanRewrite, that uses a priority queue to expand
the query to the top-N terms.
> currently N is hardcoded at BooleanQuery.getMaxClauseCount(), but it would be nice to
be able to set this for top-N MultiTermQueries: e.g. expand a fuzzy query to at most only
the 50 closest terms.
> at a glance it seems one way would be to expose TopTermsScoringBooleanRewrite (it is
private right now) and add a ctor to it, so a MultiTermQuery can instantiate one with its
own limit.

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