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https://issues.apache.org/jira/browse/LUCENE-794?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12480207
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Mark Miller commented on LUCENE-794:
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"Another approach may be to modify the MemoryIndex content to suit the query.
Your code creates a MemoryIndex when presented with the text of a field. If it
recognised it was being used in "field-insensitive mode" it could extract the
query terms and create a MemoryIndex field for each unique fieldname in the set
of query terms"
This should work fine. I had dismissed it ( and again butted heads with it for
a while now that you mentioned it) because I couldn't see the forest through
the trees. I kept thinking, this is just not going to work with a Span query
that has terms from different fields. Over and over I thought that. How can I
ignore fields in a SpanQuery. Now it hits me, rather embarrassingly, such a
SpanQuery doesn't make sense at all.
I will try your approach and submit a new patch.
- Mark
> 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, 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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