I see how this can happen ...

I guess org.apache.wicket.serialize.java.JavaSerializer.serialize(Object)
returns null and logs an exception with message:
Error serializing object " + object.getClass() + " [object=" + object + "]"

please create a ticket

On Wed, Sep 21, 2011 at 7:11 PM, Martin A <wml...@gmail.com> wrote:
> Hello, guys,
>
> I encounter a strange error in my wicket logs. I don't have any idea what
> the reason may be. Would you give some hints?
> I have a simple WebApplication subclass with nothing special in it.
>
> Thank you!
>
> Here's the stacktrace
>
> 20-09-2011 16:46:44,875 ERROR
> org.apache.wicket.request.cycle.RequestCycleListenerCollection$3.notify:105
> - Error detaching request cycle listener:
> org.apache.wicket.Application$2@b45ad3d
> java.lang.IllegalArgumentException: Argument 'data' may not be null.
> at org.apache.wicket.util.lang.Args.notNull(Args.java:39)
> at
> org.apache.wicket.pageStore.AsynchronousDataStore$Entry.<init>(AsynchronousDataStore.java:271)
> at
> org.apache.wicket.pageStore.AsynchronousDataStore.storeData(AsynchronousDataStore.java:215)
> at
> org.apache.wicket.pageStore.DefaultPageStore.storePageData(DefaultPageStore.java:115)
> at
> org.apache.wicket.pageStore.DefaultPageStore.storePage(DefaultPageStore.java:144)
> at
> org.apache.wicket.page.PageStoreManager$PersistentRequestAdapter.storeTouchedPages(PageStoreManager.java:377)
> at
> org.apache.wicket.page.RequestAdapter.commitRequest(RequestAdapter.java:171)
> at
> org.apache.wicket.page.AbstractPageManager.commitRequest(AbstractPageManager.java:94)
> at
> org.apache.wicket.page.PageManagerDecorator.commitRequest(PageManagerDecorator.java:68)
> at
> org.apache.wicket.page.PageAccessSynchronizer$2.commitRequest(PageAccessSynchronizer.java:213)
> at org.apache.wicket.Application$2.onDetach(Application.java:1552)
> at
> org.apache.wicket.request.cycle.RequestCycleListenerCollection$3.notify(RequestCycleListenerCollection.java:101)
> at
> org.apache.wicket.request.cycle.RequestCycleListenerCollection$3.notify(RequestCycleListenerCollection.java:97)
> at
> org.apache.wicket.util.listener.ListenerCollection.reversedNotify(ListenerCollection.java:121)
> at
> org.apache.wicket.util.listener.ListenerCollection.reversedNotify(ListenerCollection.java:112)
> at
> org.apache.wicket.request.cycle.RequestCycleListenerCollection.onDetach(RequestCycleListenerCollection.java:95)
> at
> org.apache.wicket.request.cycle.RequestCycle.onDetach(RequestCycle.java:542)
> at
> org.apache.wicket.request.cycle.RequestCycle.detach(RequestCycle.java:481)
> at
> org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:257)
> at
> org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:162)
> at
> org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:218)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:185)
> at
> org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:151)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
> at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
> at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:405)
> at
> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:269)
> at
> org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:515)
> at
> org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:302)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:662)
>



-- 
Martin Grigorov
jWeekend
Training, Consulting, Development
http://jWeekend.com

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