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https://issues.apache.org/jira/browse/LUCENE-794?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12487847
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Sean O'Connor commented on LUCENE-794:
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I was able to apply the spanhighlighter5.patch. I'm inexperienced with ant and
svn, so I assume the slight troubles I had were self-inflicted; I mention them
in case they are of any help.
I might have missed something, but my MemoryIndex.java seemed to be missing the
implementation of the abstract isPayloadAvailable() method from TermPositions.
That was causing my build to fail, so I added the method, simply returning
false.
After that change, the tests run, and life was good again. I do get a failed
test at
org.apache.lucene.search.highlight.HighlighterTest.testGetRangeFragments(HighlighterTest.java:137),
but it looks like that might be expected. The search is "[kannedy TO kznnedy]".
I am now looking into getting the total number of hits for a given query (for
un-normalized scoring), and the hit positions (saved for larger scale analysis
and browsing). I have code that does this, but hope I can improve on my
existing approach by using this highlighting patch.
Thanks,
Sean
> 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,
> 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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