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https://issues.apache.org/jira/browse/LUCENE-1252?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14180717#comment-14180717
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Paul Elschot commented on LUCENE-1252:
--------------------------------------
Thinking out loud:
How about adding a method toDocWithAllRequiredTerms(), and a method
toPositionMatch() that may move to a later doc?
These two together should do what nextDoc() does now.
> Avoid using positions when not all required terms are present
> -------------------------------------------------------------
>
> Key: LUCENE-1252
> URL: https://issues.apache.org/jira/browse/LUCENE-1252
> Project: Lucene - Core
> Issue Type: Wish
> Components: core/search
> Reporter: Paul Elschot
> Priority: Minor
> Labels: gsoc2014
>
> In the Scorers of queries with (lots of) Phrases and/or (nested) Spans,
> currently next() and skipTo() will use position information even when other
> parts of the query cannot match because some required terms are not present.
> This could be avoided by adding some methods to Scorer that relax the
> postcondition of next() and skipTo() to something like "all required terms
> are present, but no position info was checked yet", and implementing these
> methods for Scorers that do conjunctions: BooleanScorer, PhraseScorer, and
> SpanScorer/NearSpans.
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