You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@lucene.apache.org by "Sean O'Connor (JIRA)" <ji...@apache.org> on 2007/04/10 19:56:32 UTC
[jira] Commented: (LUCENE-794) SpanScorer and SimpleSpanFragmenter
for Contrib Highlighter
[ https://issues.apache.org/jira/browse/LUCENE-794?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12487847 ]
Sean O'Connor commented on LUCENE-794:
--------------------------------------
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.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
---------------------------------------------------------------------
To unsubscribe, e-mail: java-dev-unsubscribe@lucene.apache.org
For additional commands, e-mail: java-dev-help@lucene.apache.org