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Posted to dev@uima.apache.org by "Marshall Schor (JIRA)" <de...@uima.apache.org> on 2015/05/13 20:51:59 UTC

[jira] [Created] (UIMA-4393) Subiterators - avoid copying

Marshall Schor created UIMA-4393:
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             Summary: Subiterators - avoid copying
                 Key: UIMA-4393
                 URL: https://issues.apache.org/jira/browse/UIMA-4393
             Project: UIMA
          Issue Type: Improvement
          Components: Core Java Framework
            Reporter: Marshall Schor
            Assignee: Marshall Schor
            Priority: Minor
             Fix For: 2.7.1SDK


The current subiterator implementation starts by copying into a list all the valid values of the iterator; it then iterates over this.

Change this to avoid copying in many cases.  Do the copying (converting to a list form of only valid FSs, and the previous implementation did) only when required (to support moveTo(FS) with unambiguous, reverse movement with ambiguous,  moveToLast (for all styles).  After conversion, the iterator will work as in the previous implementation, including not supporting ConcurrentModificationException (CME) signalling; before conversion, CME is supported (this is a behavior change).





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