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https://issues.apache.org/jira/browse/LUCENE-794?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12473969
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Mark Miller commented on LUCENE-794:
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I had some free time today and came back this issue. I was so set on my own
needs to start on this that I completely ignored looking closely at the contrib
highlighter code. I went back and read over it this morning and am in the
middle of a new solution. The new solution is in the form of new
SpanQueryScorer that extends Scorer and plugs into the original contrib
highlighter code. I have adapted almost all of the original tests (still a few
to go) and so far they all still pass using the SpanQueryScorer. There is no
guarantee yet that Spans will not be chopped up, but I am sure there is a way
to share Span info with a Fragmenter if you wanted to rectify this (I may get
to it). I also have not implemented a scoring properly yet...at the moment any
term that is found returns a score of 1, and each unique term in a fragment
contributes 1 to the fragment score. I will look at going further here, but I
will be posting the code first after I convert the rest of the relevant tests
and add a few Span Query tests.
I am pretty confident this will be a great solution for 'actual hit'
highlighting with the already tried and true contrib Highlighter, fragments and
all.
-Mark
> Beginnings of a span based 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, DefaultEncoder.java,
> Encoder.java, Formatter.java, Highlighter.java, Highlighter.java,
> Highlighter.java, Highlighter.java, HighlighterTest.java,
> HighlighterTest.java, HighlighterTest.java, HighlighterTest.java,
> MemoryIndex.java, QuerySpansExtractor.java, QuerySpansExtractor.java,
> SimpleFormatter.java
>
>
> This is some test code to start the work of adding a span based highlighting
> approach to the existing highlighter in contrib. See
> http://issues.apache.org/jira/browse/LUCENE-403 for some background.
> There is a dependency on MemoryIndex.
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