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Posted to dev@lucene.apache.org by "Simon Willnauer (Updated) (JIRA)" <ji...@apache.org> on 2011/12/22 10:38:30 UTC
[jira] [Updated] (LUCENE-3665) Make WeightedSpanTermExtractor
extensible to handle custom query implemenations
[ https://issues.apache.org/jira/browse/LUCENE-3665?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Simon Willnauer updated LUCENE-3665:
------------------------------------
Attachment: LUCENE-3665.patch
here is a patch including a testcases. I simply opened up the API a little and added two methods for subclassing.
> 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
> 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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