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https://issues.apache.org/jira/browse/LUCENE-6391?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Muir resolved LUCENE-6391.
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Resolution: Fixed
Fix Version/s: 5.2
Trunk
> Give SpanScorer two-phase iterator support.
> -------------------------------------------
>
> Key: LUCENE-6391
> URL: https://issues.apache.org/jira/browse/LUCENE-6391
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Robert Muir
> Fix For: Trunk, 5.2
>
> Attachments: LUCENE-6391.patch
>
>
> Fix SpanScorer to use any two-phase iterator support of the underlying Spans.
> This means e.g. a spans in a booleanquery, or a spans with a filter can be
> faster.
> In order to do this, we have to clean up this class a little bit:
> * forward most methods directly to the underlying spans.
> * ensure positions are only iterated at most once.
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