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Posted to j-dev@xerces.apache.org by "Chris Simmons (JIRA)" <xe...@xml.apache.org> on 2014/06/12 17:17:02 UTC

[jira] [Created] (XERCESJ-1636) LCount event optimization should be document scoped

Chris Simmons created XERCESJ-1636:
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             Summary: LCount event optimization should be document scoped
                 Key: XERCESJ-1636
                 URL: https://issues.apache.org/jira/browse/XERCESJ-1636
             Project: Xerces2-J
          Issue Type: Improvement
          Components: DOM (Level 2 Events)
    Affects Versions: 2.11.0
            Reporter: Chris Simmons
            Priority: Minor
         Attachments: 010-LCount-per-document.patch

Currently Xerces dom has a class LCount that it uses to track when listeners are added and removed.  It uses this to avoid dispatching events unnecessarily.

It isn't very effective though because there's currently a single static lookup.  This means that if you add a listener to one DOM and mutate a second completely unrelated DOM then Xerces will needlessly propagate events.

I have a patch to fix the issue that I will attach.



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