[jira] Commented: (TAP5-1198) A user defined activate event handler appears to execute *before* the event handler supplied by @PageActivationContext, making defensive coding impossible

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

    [ https://issues.apache.org/jira/browse/TAP5-1198?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12884879#action_12884879 ] 

Hudson commented on TAP5-1198:
------------------------------

Integrated in tapestry-5.2-freestyle #149 (See [http://hudson.zones.apache.org/hudson/job/tapestry-5.2-freestyle/149/])
    TAP5-1198: A user defined activate event handler appears to execute *before* the event handler supplied by @PageActivationContext, making defensive coding impossible


> A user defined activate event handler appears to execute *before* the event handler supplied by @PageActivationContext, making defensive coding impossible
> ----------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: TAP5-1198
>                 URL: https://issues.apache.org/jira/browse/TAP5-1198
>             Project: Tapestry 5
>          Issue Type: Bug
>          Components: tapestry-core
>    Affects Versions: 5.2.0
>            Reporter: Howard M. Lewis Ship
>            Assignee: Howard M. Lewis Ship
>             Fix For: 5.2.0
>
>
> A common technique is to provide a no-argumentes activate event handler method that can check to see if the PAC is null, and return a page (or other redirect causing result).  However, since the @PageActivationContext-related event handler executes too late, the field will always be null when that method executes.
> Workaround: Don't use @PageActivationContext

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