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Posted to dev@lucene.apache.org by "Mark Miller (JIRA)" <ji...@apache.org> on 2009/07/09 05:52:14 UTC

[jira] Commented: (LUCENE-1731) Allow ConstantScoreQuery to use custom rewrite method if using for highlighting

    [ https://issues.apache.org/jira/browse/LUCENE-1731?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12729034#action_12729034 ] 

Mark Miller commented on LUCENE-1731:
-------------------------------------

Hey Ashley,

This was added to the SpanScorer Scorer for the Highlighter a while back as part of resolving that Solr issue. Hopefully I will have to time to make it the default by 2.9's release, but its there as an option now if you use the SpanScorer.

The issue was:  	 LUCENE-1425 - Add ConstantScore highlighting support to SpanScorer

> Allow ConstantScoreQuery to use custom rewrite method if using for highlighting
> -------------------------------------------------------------------------------
>
>                 Key: LUCENE-1731
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1731
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: contrib/highlighter
>    Affects Versions: 2.4, 2.4.1
>            Reporter: Ashley Sole
>            Priority: Minor
>
> I'd like to submit a patch for ConstantScoreQuery which simply contains a setter method to state whether it is being used for highlighting or not. 
> If it is being used for highlighting, then the rewrite method can take each of the terms in the filter and create a BooleanQuery to return (if the number of terms in the filter are less than 1024), otherwise it simply uses the old rewrite method.
> This allows you to highlight upto 1024 terms when using a ConstantScoreQuery, which since it is a filter, will currently not be highlighted.
> The idea for this came from Mark Millers article "Bringing the Highlighter back to Wildcard Queries in Solr 1.4", I would just like to make it available in core lucene

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