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Date: Sat, 10 Mar 2007 15:35:09 -0800 (PST)
From: "Mark Miller (JIRA)" <jira@apache.org>
To: java-dev@lucene.apache.org
Subject: [jira] Commented: (LUCENE-794) SpanScorer and SimpleSpanFragmenter
 for Contrib Highlighter
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    [ https://issues.apache.org/jira/browse/LUCENE-794?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12479886 ] 

Mark Miller commented on LUCENE-794:
------------------------------------

Hey Mark,

I wasn't too happy about TermModifier either since I am basically violating encapsulation...TermModifier basically makes field public. I really don't see how it is possible to ignore fields in another way though. If you can think of a way, that would be awesome . At a minimum, the Term fields could be set back to their original value after doing the Span search...I wouldn't think that would be much of a performance hit.

- Mark

> SpanScorer and SimpleSpanFragmenter for Contrib Highlighter
> -----------------------------------------------------------
>
>                 Key: LUCENE-794
>                 URL: https://issues.apache.org/jira/browse/LUCENE-794
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Other
>            Reporter: Mark Miller
>            Priority: Minor
>         Attachments: CachedTokenStream.java, CachedTokenStream.java, CachedTokenStream.java, DefaultEncoder.java, Encoder.java, Formatter.java, Highlighter.java, Highlighter.java, Highlighter.java, Highlighter.java, Highlighter.java, HighlighterTest.java, HighlighterTest.java, HighlighterTest.java, HighlighterTest.java, MemoryIndex.java, QuerySpansExtractor.java, QuerySpansExtractor.java, QuerySpansExtractor.java, QuerySpansExtractor.java, SimpleFormatter.java, spanhighlighter.patch, spanhighlighter2.patch, spanhighlighter3.patch, spanhighlighter_patch_4.zip, SpanHighlighterTest.java, SpanHighlighterTest.java, SpanScorer.java, SpanScorer.java, WeightedSpanTerm.java
>
>
> 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 http://issues.apache.org/jira/browse/LUCENE-403 for some background.
> There is a dependency on MemoryIndex.

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