What does the converter of that component that is bound to the set
create? It seems to me that that doesnt create a set object but only a
user?? And then not a set of users is the argument but the user itself
so bang you get that exception you have..

On 04/06/2009, Igor Vaynberg <[email protected]> wrote:
> so looks like you are using a set as the model object but dont have a
> setter that takes a set as an argument in your domain model.
>
> -igor
>
> On Wed, Jun 3, 2009 at 11:57 PM, Linda van der Pal
> <[email protected]> wrote:
>> Igor Vaynberg wrote:
>>>
>>> need to see more of the stacktrace....
>>>
>>> -igor
>>>
>>
>> This is the entire stacktrace that is shown:
>>
>> WicketMessage: Error calling method: public void
>> nl.lunaris.bookdb.model.database.User.setFriends(java.util.Set) on object:
>> User: Test
>>
>> Root cause:
>>
>> java.lang.IllegalArgumentException: argument type mismatch at
>> sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>> at java.lang.reflect.Method.invoke(Method.java:597) at
>> org.apache.wicket.util.lang.PropertyResolver$MethodGetAndSet.setValue(PropertyResolver.java:1100)
>> at
>> org.apache.wicket.util.lang.PropertyResolver$ObjectAndGetSetter.setValue(PropertyResolver.java:582)
>> at
>> org.apache.wicket.util.lang.PropertyResolver.setValue(PropertyResolver.java:136)
>> at
>> org.apache.wicket.model.AbstractPropertyModel.setObject(AbstractPropertyModel.java:169)
>> at org.apache.wicket.Component.setDefaultModelObject(Component.java:3021)
>> at
>> org.apache.wicket.markup.html.form.ListMultipleChoice.updateModel(ListMultipleChoice.java:344)
>> at
>> org.apache.wicket.markup.html.form.Form$FormModelUpdateVisitor.component(Form.java:223)
>> at
>> org.apache.wicket.markup.html.form.FormComponent.visitComponentsPostOrderHelper(FormComponent.java:488)
>> at
>> org.apache.wicket.markup.html.form.FormComponent.visitComponentsPostOrderHelper(FormComponent.java:467)
>> at
>> org.apache.wicket.markup.html.form.FormComponent.visitComponentsPostOrder(FormComponent.java:439)
>> at
>> org.apache.wicket.markup.html.form.Form.internalUpdateFormComponentModels(Form.java:1970)
>> at
>> org.apache.wicket.markup.html.form.Form.updateFormComponentModels(Form.java:1938)
>> at org.apache.wicket.markup.html.form.Form.process(Form.java:960) at
>> org.apache.wicket.markup.html.form.Form.process(Form.java:908) at
>> org.apache.wicket.markup.html.form.Form.onFormSubmitted(Form.java:876) at
>> java.lang.reflect.Method.invoke(Method.java:597) at
>> org.apache.wicket.RequestListenerInterface.invoke(RequestListenerInterface.java:182)
>> at
>> org.apache.wicket.request.target.component.listener.ListenerInterfaceRequestTarget.processEvents(ListenerInterfaceRequestTarget.java:73)
>> at
>> org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:92)
>> at
>> org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1192)
>> at org.apache.wicket.RequestCycle.step(RequestCycle.java:1271) at
>> org.apache.wicket.RequestCycle.steps(RequestCycle.java:1370) at
>> org.apache.wicket.RequestCycle.request(RequestCycle.java:501) at
>> org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:455)
>> at
>> org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:288)
>> at
>> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
>> at
>> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360)
>> at
>> org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
>> at
>> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
>> at
>> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:726)
>> at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
>> at
>> org.apache.geronimo.jetty6.handler.TwistyWebAppContext.access$101(TwistyWebAppContext.java:40)
>> at
>> org.apache.geronimo.jetty6.handler.TwistyWebAppContext$TwistyHandler.handle(TwistyWebAppContext.java:65)
>> at
>> org.apache.geronimo.jetty6.handler.ThreadClassloaderHandler.handle(ThreadClassloaderHandler.java:46)
>> at
>> org.apache.geronimo.jetty6.handler.InstanceContextHandler.handle(InstanceContextHandler.java:58)
>> at
>> org.apache.geronimo.jetty6.handler.UserTransactionHandler.handle(UserTransactionHandler.java:48)
>> at
>> org.apache.geronimo.jetty6.handler.ComponentContextHandler.handle(ComponentContextHandler.java:47)
>> at
>> org.apache.geronimo.jetty6.handler.TwistyWebAppContext.handle(TwistyWebAppContext.java:59)
>> at
>> org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:206)
>> at
>> org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
>> at
>> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
>> at org.mortbay.jetty.Server.handle(Server.java:324) at
>> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505) at
>> org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:842)
>> at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:648) at
>> org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211) at
>> org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380) at
>> org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)
>> at org.apache.geronimo.pool.ThreadPool$1.run(ThreadPool.java:214) at
>> org.apache.geronimo.pool.ThreadPool$ContextClassLoaderRunnable.run(ThreadPool.java:344)
>> 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:619)
>>
>> Complete stack:
>>
>> org.apache.wicket.WicketRuntimeException: Error calling method: public
>> void
>> nl.lunaris.bookdb.model.database.User.setFriends(java.util.Set) on object:
>> User: Test at
>> org.apache.wicket.util.lang.PropertyResolver$MethodGetAndSet.setValue(PropertyResolver.java:1109)
>> at
>> org.apache.wicket.util.lang.PropertyResolver$ObjectAndGetSetter.setValue(PropertyResolver.java:582)
>> at
>> org.apache.wicket.util.lang.PropertyResolver.setValue(PropertyResolver.java:136)
>> at
>> org.apache.wicket.model.AbstractPropertyModel.setObject(AbstractPropertyModel.java:169)
>> at org.apache.wicket.Component.setDefaultModelObject(Component.java:3021)
>> at
>> org.apache.wicket.markup.html.form.ListMultipleChoice.updateModel(ListMultipleChoice.java:344)
>> at
>> org.apache.wicket.markup.html.form.Form$FormModelUpdateVisitor.component(Form.java:223)
>> at
>> org.apache.wicket.markup.html.form.FormComponent.visitComponentsPostOrderHelper(FormComponent.java:488)
>> at
>> org.apache.wicket.markup.html.form.FormComponent.visitComponentsPostOrderHelper(FormComponent.java:467)
>> at
>> org.apache.wicket.markup.html.form.FormComponent.visitComponentsPostOrder(FormComponent.java:439)
>> at
>> org.apache.wicket.markup.html.form.Form.internalUpdateFormComponentModels(Form.java:1970)
>> at
>> org.apache.wicket.markup.html.form.Form.updateFormComponentModels(Form.java:1938)
>> at org.apache.wicket.markup.html.form.Form.process(Form.java:960) at
>> org.apache.wicket.markup.html.form.Form.process(Form.java:908) at
>> org.apache.wicket.markup.html.form.Form.onFormSubmitted(Form.java:876) at
>> java.lang.reflect.Method.invoke(Method.java:597) at
>> org.apache.wicket.RequestListenerInterface.invoke(RequestListenerInterface.java:182)
>> at
>> org.apache.wicket.request.target.component.listener.ListenerInterfaceRequestTarget.processEvents(ListenerInterfaceRequestTarget.java:73)
>> at
>> org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:92)
>> at
>> org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1192)
>> at org.apache.wicket.RequestCycle.step(RequestCycle.java:1271) at
>> org.apache.wicket.RequestCycle.steps(RequestCycle.java:1370) at
>> org.apache.wicket.RequestCycle.request(RequestCycle.java:501) at
>> org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:455)
>>
>>
>>
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