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https://issues.apache.org/jira/browse/SOLR-1954?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12880798#action_12880798
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David Smiley commented on SOLR-1954:
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Character offsets may not be perfect, but bytes are worse. And without either,
there's no feature here to discuss! Hence lets keep it at UTF-16 character
offset as a practical matter.
> Highlighter component should expose snippet character offsets and the score.
> ----------------------------------------------------------------------------
>
> Key: SOLR-1954
> URL: https://issues.apache.org/jira/browse/SOLR-1954
> Project: Solr
> Issue Type: New Feature
> Components: highlighter
> Reporter: David Smiley
> Priority: Minor
> Attachments: SOLR-1954_start_and_end_offsets.patch
>
>
> The Highlighter Component does not currently expose the snippet character
> offsets nor the score. There is a TODO in DefaultSolrHighlighter indicating
> the intention to add this eventually. This information is needed when doing
> highlighting on external content. The data is there so its pretty easy to
> output it in some way. The challenge is deciding on the output and its
> ramifications on backwards compatibility. The current highlighter component
> response structure doesn't lend itself to adding any new data, unfortunately.
> I wish the original implementer had some foresight. Unfortunately all the
> highlighting tests assume this structure. Here is a snippet of the current
> response structure in Solr's sample data searching for "sdram" for reference:
> {code:xml}
> <lst name="highlighting">
> <lst name="VS1GB400C3">
> <arr name="text">
> <str>CORSAIR ValueSelect 1GB 184-Pin DDR <em>SDRAM</em>
> Unbuffered DDR 400 (PC 3200) System Memory - Retail</str>
> </arr>
> </lst>
> </lst>
> {code}
> Perhaps as a little hack, we introduce a pseudo field called
> text_startCharOffset which is the concatenation of the matching field and
> "_startCharOffset". This would be an array of ints. Likewise, there would
> be another array for endCharOffset and score.
> Thoughts?
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