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From "Michael Busch (JIRA)" <>
Subject [jira] Created: (LUCENE-761) Clone proxStream lazily in SegmentTermPositions
Date Sat, 23 Dec 2006 14:56:21 GMT
Clone proxStream lazily in SegmentTermPositions

                 Key: LUCENE-761
             Project: Lucene - Java
          Issue Type: Improvement
          Components: Index
            Reporter: Michael Busch
            Priority: Minor

In SegmentTermPositions the proxStream should be cloned lazily, i. e. at the first time nextPosition()
is called. Then the initialization costs of TermPositions are not higher anymore compared
to TermDocs and thus there is no reason anymore for Scorers to use TermDocs instead of TermPositions.
In fact, all Scorers should use TermPositions, because custom subclasses of existing scorers
might want to access payloads, which is only possible via TermPositions. We could further
merge SegmentTermDocs and SegmentTermPositions into one class and deprecate the interface

I'm going to attach a patch once the payloads feature (LUCENE-755) is committed.

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