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From "Christopher Currens (JIRA)" <>
Subject [jira] [Commented] (LUCENENET-505) FastVectorHighlighter create fragment only with match at the beginning
Date Mon, 03 Sep 2012 05:31:07 GMT


Christopher Currens commented on LUCENENET-505:

I'm not so sure this should be part of the SimpleFragListBuilder.  All of a sudden, that class
is no longer "simple", not to mention that it might make porting a bit more difficult.

It seems to make more sense to have a new class whose name infers that it will grab fragments
that match from any position in the term.
> FastVectorHighlighter create fragment only with match at the beginning
> ----------------------------------------------------------------------
>                 Key: LUCENENET-505
>                 URL:
>             Project: Lucene.Net
>          Issue Type: Improvement
>          Components: Lucene.Net Contrib
>    Affects Versions: Lucene.Net 2.9.4g
>            Reporter: Ricci Gian Maria
>            Priority: Minor
>         Attachments: FragListBuilder.patch, PatchForSimpleFragListBuilder.patch
> When you use FastVectorHighlighter fragments returned have the match at the beginning.
In most situation it is much more useful to create fragments with the match in the middle.
I've included a really trivial patch to enable this with a specialized constructor of the
> Es: FastVectorHighlighter hilighter = new FastVectorHighlighter(true, true, new SimpleFragListBuilder(true),
new SimpleFragmentsBuilder());
> The true parameter to SimpleFragListBuilder is named matchInTheMiddle so it has a descriptive
name. Probably it would be useful to create an enum to place the match at: beginning, middle,

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