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https://issues.apache.org/jira/browse/LUCENE-2760?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12932107#action_12932107
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Robert Muir commented on LUCENE-2760:
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I'd like to commit this soon if there are no objections.
these apis (SpanPositionCheckQuery) are new in 3.x/trunk so theres no backwards
break
> optimize spanfirstquery, spanpositionrangequery
> -----------------------------------------------
>
> Key: LUCENE-2760
> URL: https://issues.apache.org/jira/browse/LUCENE-2760
> Project: Lucene - Java
> Issue Type: Improvement
> Reporter: Robert Muir
> Fix For: 3.1, 4.0
>
> Attachments: LUCENE-2760.patch, LUCENE-2760.patch
>
>
> SpanFirstQuery and SpanPositionRangeQuery (SpanFirst is just a special case
> of this), are currently inefficient.
> Take this worst case example: SpanFirstQuery("the").
> Currently the code reads all the positions for the term "the".
> But when enumerating spans, once we have passed the allowable range we should
> move on to the next document (skipTo)
>
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