[jira] [Updated] (WICKET-4763) Page's stateless hint is initially set to 'false'

["Martin Grigorov (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/WICKET-4763?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Martin Grigorov updated WICKET-4763:
------------------------------------

    Summary: Page's stateless hint is initially set to 'false'  (was: RenderPerformanceListener causes session creation)
    
> Page's stateless hint is initially set to 'false'
> -------------------------------------------------
>
>                 Key: WICKET-4763
>                 URL: https://issues.apache.org/jira/browse/WICKET-4763
>             Project: Wicket
>          Issue Type: Bug
>          Components: wicket-devutils
>    Affects Versions: 6.0.0
>            Reporter: Christoph Leiter
>            Priority: Minor
>
> If RenderPerformanceListener is active then sessions will be created even for stateless pages. This happens because RPL is an IComponentInstantiationListener which adds a Behavior to every component. That causes a call to addStateChange() which in turns calls AbstractPageManager#touchPage. At this point #isPageStateless always returns false (!) and so a session is bound. The problem is that all this happens very early in the creation of a Component when it's not fully initialized yet. If RPL implemented IComponentInitializationListener instead this problem wouldn't occur.
> I can't really tell if it's a bug or not that adding a Behavior in an IComponentInstantiationListener makes pages stateful... Maybe that's just generally not a good idea.

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