the error means that a behavior constructed the url, but when the user followed the url the behavior could no longer be found.
what npe? can you show the full stack trace? -igor On Tue, Nov 4, 2008 at 10:01 AM, Martin Makundi <[EMAIL PROTECTED]> wrote: > What is a temporary behavior? > > I do not understand conceptually how a behavior can be invoked if it > is no longer there.. > > The error log shows a nearby nullpointer exception which might have > occurred during the same OnAjaxChangeBehavior .. maybe it led into an > illegal state: > > at org.apache.wicket.Component.setModelObject(Component.java:2951) > at > org.apache.wicket.markup.html.form.FormComponent.updateModel(FormComponent.java:1082) > at org.apache.wicket.markup.html.form.Form$19.validate(Form.java:1810) > at > org.apache.wicket.markup.html.form.Form$ValidationVisitor.formComponent(Form.java:162) > at > org.apache.wicket.markup.html.form.FormComponent.visitFormComponentsPostOrderHelper(FormComponent.java:426) > at > org.apache.wicket.markup.html.form.FormComponent.visitFormComponentsPostOrderHelper(FormComponent.java:413) > at > org.apache.wicket.markup.html.form.FormComponent.visitFormComponentsPostOrderHelper(FormComponent.java:413) > at > org.apache.wicket.markup.html.form.FormComponent.visitFormComponentsPostOrderHelper(FormComponent.java:413) > at > org.apache.wicket.markup.html.form.FormComponent.visitFormComponentsPostOrderHelper(FormComponent.java:413) > at > org.apache.wicket.markup.html.form.FormComponent.visitFormComponentsPostOrderHelper(FormComponent.java:413) > at > org.apache.wicket.markup.html.form.FormComponent.visitFormComponentsPostOrderHelper(FormComponent.java:413) > at > org.apache.wicket.markup.html.form.FormComponent.visitFormComponentsPostOrderHelper(FormComponent.java:413) > at > org.apache.wicket.markup.html.form.FormComponent.visitFormComponentsPostOrder(FormComponent.java:390) > at > org.apache.wicket.markup.html.form.Form.visitFormComponentsPostOrder(Form.java:1049) > at > org.apache.wicket.markup.html.form.Form.internalUpdateFormComponentModels(Form.java:1801) > at > org.apache.wicket.markup.html.form.Form.updateFormComponentModels(Form.java:1769) > at org.apache.wicket.markup.html.form.Form.process(Form.java:851) > at > org.apache.wicket.markup.html.form.Form.onFormSubmitted(Form.java:793) > at > org.apache.wicket.ajax.form.AjaxFormSubmitBehavior.onEvent(AjaxFormSubmitBehavior.java:132) > at > org.apache.wicket.ajax.AjaxEventBehavior.respond(AjaxEventBehavior.java:161) > at > org.apache.wicket.ajax.AbstractDefaultAjaxBehavior.onRequest(AbstractDefaultAjaxBehavior.java:298) > at > org.apache.wicket.request.target.component.listener.BehaviorRequestTarget.processEvents(BehaviorRequestTarget.java:100) > at > org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:91) > > > > 2008/11/4 Igor Vaynberg <[EMAIL PROTECTED]>: >> looks like the behavior that generated the callbakc url being invoked >> is no longer there... >> >> do you have any temporary behaviors on that component? >> >> -igor >> >> On Tue, Nov 4, 2008 at 9:07 AM, Martin Makundi >> <[EMAIL PROTECTED]> wrote: >>> Hi! >>> >>> What does this error mean? >>> >>> No behavior listener found with behaviorId 0 >>> >>> What is being done wrong? Normally, the site works ok but the error >>> log shows this kind of error. >>> >>> Am I manifesting some known Wicket antipattern which causes this >>> error? Or is it just a result of another illegal state? >>> >>> at >>> org.apache.wicket.request.target.component.listener.BehaviorRequestTarget.processEvents(BehaviorRequestTarget.java:95) >>> at >>> org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:91) >>> at >>> org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1174) >>> at org.apache.wicket.RequestCycle.step(RequestCycle.java:1251) >>> at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1352) >>> at org.apache.wicket.RequestCycle.request(RequestCycle.java:499) >>> at >>> org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:375) >>> at >>> org.apache.wicket.protocol.http.WicketServlet.doPost(WicketServlet.java:145) >>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) >>> at wicket.quickstart.TakpServlet.service(TakpServlet.java:58) >>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) >>> at >>> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:491) >>> at >>> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:367) >>> at >>> org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:185) >>> at >>> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181) >>> at >>> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:689) >>> at >>> org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:391) >>> at >>> org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:146) >>> 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:285) >>> at >>> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:457) >>> at >>> org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:765) >>> at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:627) >>> at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:203) >>> at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:357) >>> at >>> org.mortbay.jetty.bio.SocketConnector$Connection.run(SocketConnector.java:217) >>> at >>> org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:475) >>> >>> >>> ** >>> Martin >>> >>> --------------------------------------------------------------------- >>> To unsubscribe, e-mail: [EMAIL PROTECTED] >>> For additional commands, e-mail: [EMAIL PROTECTED] >>> >>> >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: [EMAIL PROTECTED] >> For additional commands, e-mail: [EMAIL PROTECTED] >> >> > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
