How to resolve java.lang.IllegalStateException?

Question

We are using OC4J 10.1.3.5 and ADF. I have a popup form and when closing we got error below. I wonder what am I missing and how can I resolve it?

Jun 15, 2010 8:26:49 AM com.sun.faces.lifecycle.ApplyRequestValuesPhase execute
SEVERE: java.lang.IllegalStateException: popView(): No view has been pushed.
javax.faces.el.EvaluationException: java.lang.IllegalStateException: popView(): No view has been pushed.
        at com.sun.faces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:150)
        at oracle.adf.view.faces.component.UIXComponentBase.__broadcast(UIXComponentBase.java:1087)
        at oracle.adf.view.faces.component.UIXCommand.broadcast(UIXCommand.java:204)
        at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:269)
        at javax.faces.component.UIViewRoot.processDecodes(UIViewRoot.java:327)
        at com.sun.faces.lifecycle.ApplyRequestValuesPhase.execute(ApplyRequestValuesPhase.java:99)
        at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:245)
        at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:110)
        at javax.faces.webapp.FacesServlet.service(FacesServlet.java:213)
        at com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:64)
        at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl._invokeDoFilter(AdfFacesFilterImpl.java:233)
        at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl._doFilterImpl(AdfFacesFilterImpl.java:202)
        at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl.doFilter(AdfFacesFilterImpl.java:12

Answer 1

From the documentation:

IllegalStateException signals that a method has been invoked at an illegal or inappropriate time. In other words, the Java environment or Java application is not in an appropriate state for the requested operation.

There's no silver bullet to resolve these kinds of exceptions; you have to deal with it on a case by case basis, studying the API of whatever library you're using, and figuring out where the illegal state happens.

In this particular case, it looks like popView() is being called when the stack is empty. You may be missing a pushView, or miscalculating the number of pushes vs pops.