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From "Mike Klaas (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-794) Extend contrib Highlighter to properly support PhraseQuery, SpanQuery, ConstantScoreRangeQuery
Date Thu, 21 Feb 2008 00:01:43 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-794?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12570896#action_12570896
] 

Mike Klaas commented on LUCENE-794:
-----------------------------------

This may be largely irrelevant, but Solr has a ConstantScorePrefixQuery which has similar
issues (but _should_ be highlighted most of the time).

It might find its way into lucene core one day.

> Extend contrib Highlighter to properly support PhraseQuery, SpanQuery,  ConstantScoreRangeQuery
> -----------------------------------------------------------------------------------------------
>
>                 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: SpanHighlighter-01-26-2008.patch, SpanHighlighter-01-28-2008.patch,
spanhighlighter.patch, spanhighlighter10.patch, spanhighlighter11.patch, spanhighlighter12.patch,
spanhighlighter2.patch, spanhighlighter3.patch, spanhighlighter5.patch, spanhighlighter6.patch,
spanhighlighter7.patch, spanhighlighter8.patch, spanhighlighter9.patch, spanhighlighter_24_January_2008.patch,
spanhighlighter_patch_4.zip
>
>
> 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, PhraseQuery, and  ConstantScoreRangeQuery.
New Query types are easy to add. 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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