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https://issues.apache.org/jira/browse/LUCENE-1999?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mark Harwood updated LUCENE-1999:
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Attachment: matchflagger.patch
> Match spotter for all query types
> ---------------------------------
>
> Key: LUCENE-1999
> URL: https://issues.apache.org/jira/browse/LUCENE-1999
> Project: Lucene - Java
> Issue Type: New Feature
> Affects Versions: 2.9
> Reporter: Mark Harwood
> Attachments: matchflagger.patch
>
>
> Related to LUCENE-1929 and the current inability to highlight
> NumericRangeQuery, spatial, cached term filters and other exotica.
> This patch provides the ability to wrap *any* Query objects and record match
> info as flags encoded in the overall document score.
> Using this approach it would be possible to understand (and therefore
> highlight) which fields matched clauses in a query.
> The match encoding approach loses some precision in scores as noted here:
> http://tinyurl.com/ykt8nx7
> Avoiding these precision issues would require a change to Lucene core to
> record docId, score AND a matchFlag byte in ScoreDoc objects and collector
> APIs.
> This may be something we should consider.
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