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From "Michael Busch (JIRA)" <>
Subject [jira] Resolved: (LUCENE-761) Clone proxStream lazily in SegmentTermPositions
Date Sun, 11 Mar 2007 07:16:09 GMT


Michael Busch resolved LUCENE-761.

       Resolution: Fixed
    Fix Version/s: 2.2

I just committed this.

> Clone proxStream lazily in SegmentTermPositions
> -----------------------------------------------
>                 Key: LUCENE-761
>                 URL:
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Index
>            Reporter: Michael Busch
>         Assigned To: Michael Busch
>            Priority: Minor
>             Fix For: 2.2
>         Attachments: lucene-761.patch
> 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 TermDocs.
> I'm going to attach a patch once the payloads feature (LUCENE-755) is committed.

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