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https://issues.apache.org/jira/browse/LUCENE-4734?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ryan Lauck updated LUCENE-4734:
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Attachment: lucene-fvh-slop-reverse.patch
I hope I'm not stepping on any toes here, but I realized my patch is similar to
some of the work done in LUCENE-4118. My patch also solves the bug where
repeated terms in a proximity query cause highlight matching to fail.
I also took a different approach to handling reverse order matching on slop
queries so that this patch could be a complete alternative to LUCENE-4118. I
modified QueryPhraseMap.add to detect PhraseQuerys with slop and create a
second mapping for the phrase terms in reverse order - this way no other code
needs to change to handle proximity phrase terms appearing in reverse order.
I added two simple test cases for both reverse ordering and repeated terms.
> FastVectorHighlighter Overlapping Proximity Queries Do Not Highlight
> --------------------------------------------------------------------
>
> Key: LUCENE-4734
> URL: https://issues.apache.org/jira/browse/LUCENE-4734
> Project: Lucene - Core
> Issue Type: Bug
> Components: modules/highlighter
> Affects Versions: 4.0, 4.1, 5.0
> Reporter: Ryan Lauck
> Labels: fastvectorhighlighter, highlighter
> Fix For: 4.2, 5.0
>
> Attachments: lucene-fvh-slop.patch, lucene-fvh-slop-reverse.patch
>
>
> If a proximity phrase query overlaps with any other query term it will not be
> highlighted.
> Example Text: A B C D E F G
> Example Queries:
> "B E"~10 D
> (D will be highlighted instead of "B C D E")
> "B E"~10 "C F"~10
> (nothing will be highlighted)
> This can be traced to the FieldPhraseList constructor's inner while loop.
> From the first example query, the first TermInfo popped off the stack will be
> "B". The second TermInfo will be "D" which will not be found in the submap
> for "B E"~10 and will trigger a failed match.
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