Damien Hollis created WICKET-5176:
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Summary: StringResourceModel doesn't detach model in some cases
Key: WICKET-5176
URL: https://issues.apache.org/jira/browse/WICKET-5176
Project: Wicket
Issue Type: Bug
Reporter: Damien Hollis
Priority: Minor
Attachments: Main.java
We have come across an issue with StringResourceModel not detaching the model
it holds under a certain condition. The problem is the case where the
StringResourceModel is created but it is not used - for example when it is on a
tab that is not displayed.
StringResourceModel is a subclass of LoadableDetachableModel and it simply
implements onDetach(), letting the superclass decide whether it is attached or
not. The problem is that when StringResourceModel is created,
LoadableDetachableModel.attached will be false. If the StringResourceModel is
never read (i.e. getObject() is not called) the LoadableDetachableModel will
not be marked as attached and when detach() is called, onDetach() will not be
called. Therefore StringResourceModel will not call detach() on the model that
it holds.
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