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https://issues.apache.org/jira/browse/LUCENE-794?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mark Miller updated LUCENE-794:
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Attachment: spanhighlighter10.patch
Requested changes have been made. Only relevant file now is
spanhighlighter10.patch.
This is a parallel implementation...it uses all of the current Highlighter
classes. Really, it is just a new Scorer implementation that scores position
sensitive queries based on correct positions for a hit.
The whole approach was radically changed from the StringBuilder version, so all
code is still Java 1.4 compatible.
I have been using this extensively with great success for a few months now.
> Extend contrib Highlighter to properly support phrase queries and span queries
> ------------------------------------------------------------------------------
>
> 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,
> spanhighlighter10.patch, spanhighlighter2.patch, spanhighlighter3.patch,
> spanhighlighter5.patch, spanhighlighter6.patch, spanhighlighter7.patch,
> spanhighlighter8.patch, spanhighlighter9.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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