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https://issues.apache.org/jira/browse/WW-4789?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17082403#comment-17082403
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ASF subversion and git services commented on WW-4789:
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Commit adcc67d9dc40782c5df04e33282440749e977548 in struts's branch
refs/heads/action-context-boost from Lukasz Lenart
[ https://gitbox.apache.org/repos/asf?p=struts.git;h=adcc67d ]
WW-4789 WW-3788 Marks VALUE_STACK, APPLICATION and SESSION as deprecated on
behalf using helper methods
> ActionContext should be immutable
> ---------------------------------
>
> Key: WW-4789
> URL: https://issues.apache.org/jira/browse/WW-4789
> Project: Struts 2
> Issue Type: Improvement
> Components: Core
> Reporter: Lukasz Lenart
> Assignee: Lukasz Lenart
> Priority: Major
> Fix For: 2.6
>
>
> Right now ActionContext is a bag of different contexts with mixed
> responsibility. Also some of them lay in ThreadLocal variable, but some are
> accessed directly. Also it is easily to modify the internal state which
> shouldn't be possible. The context should be constant during whole action
> execution period.
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