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From "Sujit Pal (JIRA)" <>
Subject [jira] [Commented] (LUCENE-3141) FastVectorHighlighter - expose FieldFragList.fragInfo for user-customizable FragmentsBuilder
Date Mon, 30 May 2011 17:06:47 GMT


Sujit Pal commented on LUCENE-3141:

Thank you, I see it on the trunk now.

> FastVectorHighlighter - expose FieldFragList.fragInfo for user-customizable FragmentsBuilder
> --------------------------------------------------------------------------------------------
>                 Key: LUCENE-3141
>                 URL:
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: modules/highlighter
>    Affects Versions: 2.9.4, 3.0.3, 3.1
>         Environment: Lucene 3.1
>            Reporter: Sujit Pal
>            Assignee: Koji Sekiguchi
>            Priority: Minor
>              Labels: features, lucene,
>             Fix For: 3.3, 4.0
>         Attachments:,, LUCENE-3141.patch, lucene-3141-patch-2.diff,
> Needed to build a custom highlightable snippet - snippet should start with the sentence
containing the first match, then continue for 250 characters.
> So created a custom FragmentsBuilder extending SimpleFragmentsBuilder and overriding
the createFragments(IndexReader reader, int docId, String fieldName, FieldFragList fieldFragList)
method - unit test containing the code is attached to the JIRA.
> To get this to work, needed to expose (make public) the FieldFragList.fragInfo member
variable. This is currently package private, so only FragmentsBuilder implementations within
the lucene-highlighter o.a.l.s.vectorhighlight package (such as SimpleFragmentsBuilder) can
access it. Since I am just using the lucene-highlighter.jar as an external dependency to my
application, the simplest way to access FieldFragList.fragInfo in my class was to make it

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