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Date: Mon, 2 Jan 2012 14:54:31 +0000 (UTC)
From: "Simon Willnauer (Resolved) (JIRA)" <jira@apache.org>
To: dev@lucene.apache.org
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Subject: [jira] [Resolved] (LUCENE-3665) Make WeightedSpanTermExtractor
 extensible to handle custom query implemenations
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     [ https://issues.apache.org/jira/browse/LUCENE-3665?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Simon Willnauer resolved LUCENE-3665.
-------------------------------------

    Resolution: Fixed
      Assignee: Simon Willnauer
    
> Make WeightedSpanTermExtractor extensible to handle custom query implemenations
> -------------------------------------------------------------------------------
>
>                 Key: LUCENE-3665
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3665
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: modules/highlighter
>    Affects Versions: 3.5
>            Reporter: Simon Willnauer
>            Assignee: Simon Willnauer
>            Priority: Minor
>             Fix For: 3.6, 4.0
>
>         Attachments: LUCENE-3665.patch
>
>
> Currently if I have a custom query which subclasses query directly I can't use the QueryScorer for highlighting since it does explicit instanceof checks. In some cases its is possible to rewrite the query before passing it to the highlighter to obtain a primitive query. However I had the usecase where this was not possible ie. the original index was not available on the machine which highlights the results. To still use the highlighter I had to copy a bunch of code due to visibility issues in those classes. I think we can make this extensible with minor effort to allow this usecase without massive code duplication.

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