[jira] [Commented] (LUCENE-7575) UnifiedHighlighter: add requireFieldMatch=false support

["David Smiley (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/LUCENE-7575?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15695991#comment-15695991 ] 

David Smiley commented on LUCENE-7575:
--------------------------------------

This should be straight-forward to add to the term & automata extraction routines.  

PhraseHelper is a bit more work when it comes time to actually executing the SpanQuery... it probably needs to wrap the LeafReader in order to always return the field being highlighted no matter which field is being asked for.  If the query contains the same span query except differentiated by field (e.g. same SpanNear tree but only different field), it would be nice if it could be identified so that we don't do the work additional times.  But that's not essential.

> UnifiedHighlighter: add requireFieldMatch=false support
> -------------------------------------------------------
>
>                 Key: LUCENE-7575
>                 URL: https://issues.apache.org/jira/browse/LUCENE-7575
>             Project: Lucene - Core
>          Issue Type: Improvement
>          Components: modules/highlighter
>            Reporter: David Smiley
>
> The UnifiedHighlighter (like the PostingsHighlighter) only supports highlighting queries for the same fields that are being highlighted.  The original Highlighter and FVH support loosening this, AKA requireFieldMatch=false.



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