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Posted to dev@lucene.apache.org by "Mark Miller (JIRA)" <ji...@apache.org> on 2007/06/01 16:42:16 UTC
[jira] Updated: (LUCENE-794) SpanScorer and SimpleSpanFragmenter
for Contrib Highlighter
[ https://issues.apache.org/jira/browse/LUCENE-794?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Mark Miller updated LUCENE-794:
-------------------------------
Attachment: spanhighlighter7.patch
Minor update to straighten a few things out.
- Replaced custom CachingTokenStream with Lucene's CachingTokenFilter
- Some refactoring in the SpanExtractor (now WeightedSpanTermExtractor)
- Updated some stale JavaDoc
> 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, spanhighlighter5.patch, spanhighlighter6.patch, spanhighlighter7.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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