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https://issues.apache.org/jira/browse/WICKET-2330?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Igor Vaynberg resolved WICKET-2330.
-----------------------------------
Resolution: Fixed
Fix Version/s: 1.4-RC6
Assignee: Igor Vaynberg
> AjaxFormSubmitBehavior throws an NullPointerException when getForm() is
> overridden
> ----------------------------------------------------------------------------------
>
> Key: WICKET-2330
> URL: https://issues.apache.org/jira/browse/WICKET-2330
> Project: Wicket
> Issue Type: Bug
> Affects Versions: 1.4-RC4
> Reporter: Zoltan Luspai
> Assignee: Igor Vaynberg
> Fix For: 1.4-RC6
>
>
> I have an AjaxFormSubmitBehavior where I don't pass the form parameter in the
> constructor, but have overridden the getForm() method to find the related
> form. (The form is not parent of the button this behavior is attached to, so
> can not be found by the behavior itself).
> When I "click" on the button attached, the form is submitted nicely, but
> after the onSubmit call I get this exception:
> java.lang.NullPointerException
> at
> org.apache.wicket.ajax.form.AjaxFormSubmitBehavior.onEvent(AjaxFormSubmitBehavior.java:142)
> at
> org.apache.wicket.ajax.AjaxEventBehavior.respond(AjaxEventBehavior.java:166)
> at
> org.apache.wicket.ajax.AbstractDefaultAjaxBehavior.onRequest(AbstractDefaultAjaxBehavior.java:299)
> at
> org.apache.wicket.request.target.component.listener.BehaviorRequestTarget.processEvents(BehaviorRequestTarget.java:113)
> at
> org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:92)
> at
> org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1240)
> at org.apache.wicket.RequestCycle.step(RequestCycle.java:1319)
> Having a look at the source it seems there is a but at this line in
> AjaxFormSubmitBehavior:
> @Override
> protected void onEvent(AjaxRequestTarget target)
> {
> ...
> if (form.findParent(Page.class) != null)
> ...
> }
> I think that should be :
> ... getForm().findParent(Page.class)
> unless, there is a good reason not to be so?
> Btw; I am using wicket version 1.4rc4.
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