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

["Chris Simmons (JIRA)" <xe...@xml.apache.org>]

     [ https://issues.apache.org/jira/browse/XERCESJ-1636?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chris Simmons updated XERCESJ-1636:
-----------------------------------

    Attachment: 010-LCount-per-document.patch

Patch to make LCount document scoped.

> 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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