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Posted to oak-issues@jackrabbit.apache.org by "Thomas Mueller (JIRA)" <ji...@apache.org> on 2014/06/30 16:37:25 UTC

[jira] [Created] (OAK-1930) New method RangeIterator.getSize(int max)

Thomas Mueller created OAK-1930:
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             Summary: New method RangeIterator.getSize(int max)
                 Key: OAK-1930
                 URL: https://issues.apache.org/jira/browse/OAK-1930
             Project: Jackrabbit Oak
          Issue Type: New Feature
          Components: core, jcr, query
    Affects Versions: 1.0
            Reporter: Thomas Mueller
            Assignee: Thomas Mueller
             Fix For: 1.1


The method RangeIterator.getSize() is part of the JCR API, and returns the number of items, but can also return -1 if not known.

Currently, Oak doesn't return -1, but counts the items. This is slow (potentially very slow) if there are many items, for example, in a query result.

I propose to add a new method RangeIterator.getSize(long max) that limits counting the entries. That way, an application can use a reasonable limit, and Oak doesn't need to count.



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