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Posted to issues@commons.apache.org by "Thomas Neidhart (JIRA)" <ji...@apache.org> on 2013/05/06 11:10:15 UTC

[jira] [Created] (COLLECTIONS-460) Add IteratorQueue

Thomas Neidhart created COLLECTIONS-460:
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             Summary: Add IteratorQueue
                 Key: COLLECTIONS-460
                 URL: https://issues.apache.org/jira/browse/COLLECTIONS-460
             Project: Commons Collections
          Issue Type: New Feature
          Components: Iterator
            Reporter: Thomas Neidhart
             Fix For: 4.0


An IteratorQueue is equivalent to an IteratorChain with the difference that the iterators to use is put into a queue instead of an list, and they are removed from the queue if an iterator is exhausted.

The IteratorChain keeps the iterators in the list even if they are exhausted, thus they can not be gc'ed until the whole chain is done. The interface of IteratorChain also contains a getIterators method, which returns the list of iterators used by this chain. So instead of changing the IteratorChain, I propose to add a separate class IteratorQueue with the described behavior.

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