You could also use conversation scoped beans (Seam or Orchestra). That way your beans would be bound to the window and not the session.
Andrew On 5/7/08, Nitin Deshmukh <[EMAIL PROTECTED]> wrote: > > > > --- On Tue, 5/6/08, [EMAIL PROTECTED] <[EMAIL PROTECTED]> > wrote: > > > From: [EMAIL PROTECTED] <[EMAIL PROTECTED]> > > Subject: Re: getting java.util.NoSuchElementException occasionally > > To: "MyFaces Discussion" <[email protected]> > > Date: Tuesday, May 6, 2008, 9:47 AM > > Nitin Deshmukh schrieb: > > > Hi All, > > > > > > I am using MyFaces1.1.5, Tomahawk 1.1.6, ajax4jsf1.1.1 > > on weblogic 8.1 sp6. Users are sometimes getting > > NoSuchElementException. Following is the StackTrace of the > > exception. StackTrace doesn't give any information > > regarding where in the application is started and hence I > > am not able to figure out what action might have caused it. > > > Any help is appreciated. > > > > > > Thanks in advance, > > > Nitin > > > > > > ====================================================== > > > java.util.NoSuchElementException > > > at > > java.util.AbstractList$Itr.next(AbstractList.java:426) > > > at > > > javax.faces.component._FacetsAndChildrenIterator.next(_FacetsAndChildrenIterator.java:56) > > > at > > > javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:604) > > > at > > > javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:605) > > > at > > javax.faces.component.UIForm.processDecodes(UIForm.java:56) > > > at > > > javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:605) > > > at > > > javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:605) > > > at > > javax.faces.component.UIViewRoot.processDecodes(UIViewRoot.java:138) > > > at > > org.ajax4jsf.framework.ajax.AjaxViewRoot.access$001(AjaxViewRoot.java:53) > > > at > > > org.ajax4jsf.framework.ajax.AjaxViewRoot$1.invokeRoot(AjaxViewRoot.java:256) > > > at > > > org.ajax4jsf.framework.ajax.JsfOneOneInvoker.invokeOnRegionOrRoot(JsfOneOneInvoker.java:53) > > > at > > > org.ajax4jsf.framework.ajax.AjaxContext.invokeOnRegionOrRoot(AjaxContext.java:191) > > > > > I wonder if you have the same problem as someone else > > posting today. Do > > your users happen to have multiple windows open at once, in > > which they > > are doing simultaneous requests? Perhaps due to some > > automatic periodic > > ajax request that is configured to execute in each page? > > > > Regards, > > Simon > > Users can open multiple windows, that is possible. But I don't have any > automatic ajax requests. I am using ajax on the home page only. But I > suppose what you are saying is possible that user is trying to do multiple > simultaneous request and that might have caused it. > Also, I do have reports that users also get > java.util.ConcurrentModificationException occasionally. I wonder if both the > exceptions are because of the same reason.. The second exception arises from > the action method of a session scoped bean. so, if two threads are trying to > modify the list at the same time, it is possible to get this exception. > In the second case, I think the only option I see is to make my action > method synchronized, or at least to synchronize the block where list is > being modified.. Is there any other option for me? > and about the first exception, I have no idea where it starts. > Thanks, > Nitin > > > > ____________________________________________________________________________________ > Be a better friend, newshound, and > know-it-all with Yahoo! Mobile. Try it now. > http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ >
