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https://issues.apache.org/jira/browse/WICKET-2020?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12664033#action_12664033
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Emond Papegaaij commented on WICKET-2020:
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But that would put the callback before the request targets are detached. We
need a callback after the targets are detached, probably just before '// let
the session cleanup after a request, flushing changes etc.'. Overriding the
method and detaching the request targets by hand is not possible, because
'requestTargets' is private.
> Callback after detaching the page but before the PageMap lock is released
> -------------------------------------------------------------------------
>
> Key: WICKET-2020
> URL: https://issues.apache.org/jira/browse/WICKET-2020
> Project: Wicket
> Issue Type: Improvement
> Components: wicket
> Affects Versions: 1.3.5
> Reporter: Emond Papegaaij
>
> Currently, it is not possible to perform any checks on a page after the
> request has been detached. In onEndRequest, the PageMap lock has already been
> cleared, making it unsafe to access the pages involved in the request. Would
> it be possible to add an extra callback method (ie. onAfterTargetDetach()) to
> RequestCycle directly after detaching the request targets? We need such a
> callback to check (in development mode) if all models are detached correctly.
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