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https://issues.apache.org/jira/browse/LUCENE-2064?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12777686#action_12777686
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Uwe Schindler edited comment on LUCENE-2064 at 11/13/09 10:42 PM:
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This is cool.

Highlighter & MTQ is broken in 2.9.1. This patch looks completely broken, but 
it isn't - and my mind was also broken when I first saw the patch - because of 
that. This patch is cooler than all heavy commiting during ApacheCon.

+1 for 3.0 with this patch.That was what I wanted to say with my complete 
nonsense comment.

      was (Author: thetaphi):
    This is cool.

Highlighter & MTQ is broken in 2.9.1. This patch looks completely broken - and 
my mind was also broken when I first saw the patch - because of that. This 
patch is cooler than all heavy commiting during ApacheCon.

+1 for 3.0 with this patch.That was what I wanted to say with my complete 
nonsense comment.
  
> Highlighter should support all MultiFieldQuery subclasses without casts
> -----------------------------------------------------------------------
>
>                 Key: LUCENE-2064
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2064
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: contrib/highlighter
>    Affects Versions: 2.9.1
>            Reporter: Simon Willnauer
>            Assignee: Simon Willnauer
>             Fix For: 3.0
>
>         Attachments: LUCENE-2064.txt
>
>
> In order to support MultiTermQuery subclasses the Highlighter component 
> applies instanceof checks for concrete classes from the lucene core. This 
> prevents classes like RegexQuery in contrib from being supported. Introducing 
> dependencies on other contribs is not feasible just for being supported by 
> the highlighter.
> While the instanceof checks and subsequent casts might hopefully go somehow 
> away  in the future but for supporting more multterm queries I have a 
> alternative approach using a fake IndexReader that uses a RewriteMethod to 
> force the MTQ to pass the field name to the given reader without doing any 
> real work. It is easier to explain once you see the patch - I will upload 
> shortly.

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