specialize payload processing from of DocsAndPositionsEnum
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Key: LUCENE-2761
URL: https://issues.apache.org/jira/browse/LUCENE-2761
Project: Lucene - Java
Issue Type: Improvement
Reporter: Robert Muir
Fix For: 4.0
Attachments: LUCENE-2761.patch
In LUCENE-2670 i started working to try to improve the speed of a few
spanqueries.
In general the trick there is to avoid processing positions if you dont have to.
But, we can improve queries that read lots of positions further by cleaning up
SegmentDocsAndPositionsEnum,
in nextPosition() this has no less than 3 payloads-related checks.
however, a large majority of users/fields have no payloads at all.
I think we should specialize this case into a separate implementation and speed
up the common case.
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