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From "Mark Miller (JIRA)" <>
Subject [jira] Commented: (LUCENE-794) SpanScorer and SimpleSpanFragmenter for Contrib Highlighter
Date Wed, 14 Mar 2007 18:28:09 GMT


Mark Miller commented on LUCENE-794:

Bah, that last comment is rubbish again. Of course that will work alright. Everything is looking

On another note though, what do you think about the restriction of having to reset the SpanScorer
between calls to getBestFragments? Is this preferable to an api change?

- Mark

> SpanScorer and SimpleSpanFragmenter for Contrib Highlighter
> -----------------------------------------------------------
>                 Key: LUCENE-794
>                 URL:
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Other
>            Reporter: Mark Miller
>            Priority: Minor
>         Attachments:,,,,,,,,,,,,,,,,,,,,, spanhighlighter.patch,
spanhighlighter2.patch, spanhighlighter3.patch,,,,,,
> This patch adds a new Scorer class (SpanQueryScorer) to the Highlighter package that
scores just like QueryScorer, but scores a 0 for Terms that did not cause the Query hit. This
gives 'actual' hit highlighting for the range of SpanQuerys and PhraseQuery. There is also
a new Fragmenter that attempts to fragment without breaking up Spans.
> See for some background.
> There is a dependency on MemoryIndex.

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