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From "Simon Willnauer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-4728) Allow CommonTermsQuery to be highlighted
Date Fri, 01 Feb 2013 12:40:16 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-4728?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13568702#comment-13568702
] 

Simon Willnauer commented on LUCENE-4728:
-----------------------------------------

bq. wait i dont get it... its another instanceof block.
no not necessarily. Since for rewrite I need to get the field of the query otherwise I can't
get a IndexReader in WeightedSpanTermExtractor. The other problem here is that WeightedSpanTermExtractor
doesn't rewrite against a global reader but rather against a "reanalyzed" reader which might
bring up problems in the case of CommonTermsQuery which will in-turn create a different BooleanQuery.


bq. I dont think highlighters should depend on the concrete queries, only the abstract apis
(just like i think modules shouldnt depend on analyzers modules)... otherwise its a sign something
is wrong.

dude this is wishful thinking unless we fix our API to allow to do positional queries. Really
we already rely on it with ConstantScore / FilteredQuery calling getQuery() we also rely on
BQ etc. and TermQuery which is not abstract api.
                
> Allow CommonTermsQuery to be highlighted
> ----------------------------------------
>
>                 Key: LUCENE-4728
>                 URL: https://issues.apache.org/jira/browse/LUCENE-4728
>             Project: Lucene - Core
>          Issue Type: Improvement
>          Components: modules/highlighter
>    Affects Versions: 4.1
>            Reporter: Simon Willnauer
>            Assignee: Simon Willnauer
>             Fix For: 4.2, 5.0
>
>         Attachments: LUCENE-4728.patch, LUCENE-4728.patch
>
>
> Add support for CommonTermsQuery to all highlighter impls. 
> This might add a dependency (query-jar) to the highlighter so we might think about adding
it to core?

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