Werner, Thx for digging into this.
I think you're incorrect about how httpsession works. Here is an article about gae httpsession: http://blog.comtaste.com/2010/07/managing_session_data_in_gae_a.html If you want a consistent behaviour you need to invoke setAttribute again after having modified the Person object in the session. http://code.google.com/appengine/docs/java/config/appconfig.html#Enabling_Sessions Because App Engine stores session data in the *datastore and memcache*, all values stored in the session must implement the java.io.Serializable interface. <http://blog.comtaste.com/2010/07/managing_session_data_in_gae_a.html>Thing is I was getting the ViewExpiredException even w/ client-side state saving. (I consider this option a great scalability advantage of jsf. wicket seems to use httpsession.) Here's a thoughtful article which recommends jsf2 over wicket because of the active component libs: http://www.theserverside.com/discussions/thread.tss?thread_id=60755 <http://www.theserverside.com/discussions/thread.tss?thread_id=60755>Any opinions on the pros/cons of richfaces, primefaces, icefaces? On Thu, Dec 9, 2010 at 5:01 PM, Werner Punz <[email protected]> wrote: > Ok I have to add something, another issue is, that google does not adhere > to the session-timeout values given in the web.xml. > Currently google handles the session in the app cache, and drops it after a > view minutes no matter what, not sure what you can do about that. One > strategy might be to apply some kind of keepalive to the browser which sends > a keepalive ajax request periodically to keep the cache alive. Also if > possible shift the state saving to client as recommended earlier. The > keepalive itself might work out well to keep the app alive but probably both > measures have to be added. > > What I assume now is that you ran into a bunch of those issues, literally > all on the App Engine side. If you are aware of them you can work around > them if not oh well. > > Werner > > > Am 10.12.10 01:43, schrieb Werner Punz: > > Ok took me a while to get everything together, since this is my first >> App Engine Project project. But I think i have all info now. >> First it seems that both server and client side state handling now works >> (since 1.4 that is). >> Secondly, MyFaces works fine with GAE so does the MyFaces Ajax. >> >> here is my example: http://testinck4040.appspot.com/ >> >> The MyFaces configuration also is correct, you have to add: >> >> <!-- >> We need to set annotation lifecycyle provider manually as >> >> org.apache.myfaces.config.annotation.NoInjectionAnnotationLifecycleProvider. >> >> Other providers use some classes that are restricted on Google App Engine. >> --> >> <context-param> >> >> >> <param-name>org.apache.myfaces.config.annotation.LifecycleProvider</param-name> >> >> >> >> <param-value>org.apache.myfaces.config.annotation.NoInjectionAnnotationLifecycleProvider</param-value> >> >> </context-param> >> >> <!-- >> Need to set a secret to avoid javax.crypto.BadPaddingException. >> "param-value" must be Base64 encoded. >> More details: http://wiki.apache.org/myfaces/Secure_Your_Application >> --> >> <context-param> >> <param-name>org.apache.myfaces.SECRET</param-name> >> <param-value>NzY1NDMyMTA=</param-value> >> </context-param> >> >> To the web.xml and also have to enable sesssion handling on the gae side >> as documented. >> >> One thing I noticed however is following, if you do not redirect >> properly to a real jsf page, you will get the ViewExpired exception you >> were getting hence I set my welcome file to index.jsp >> with a simple redirect on the jsp side so that the jsf page is properly >> accessed: >> >> <body> >> <% response.sendRedirect("welcome.jsf"); %> >> <body> >> >> The funny stuff was that in the original setting GAE was picking up my >> original index.xhtml file but was doing some jsf remapping for one >> reason or the other (otherwise I would not have gotten the view expired >> exception), but for some strange kind of reason everything went haywire >> because it was not passing down the proper view but triggering jsf due >> to some internal path mapping probably. Either way doing the proper jsf >> ending mapping and redirection resolves that. >> >> Either way outside of that the view id must point properly to the jsf >> page I could not find any pitfall, I will give you a download link to >> the full project tomorrow, so that you can try it out yourself. As you >> can see in the demo ajax works fine. >> >> Here are quick links to my web.xml files and appenging-web.xml files, >> the full download will follow tomorrow. >> >> http://www.pastie.org/1363893 >> >> http://www.pastie.org/1363894 >> >> >> >> >> >> Werner >> >> >> >> >> Am 10.12.10 00:50, schrieb Werner Punz: >> >>> Ok Ken, so far I have setup my testproject and on ajax I run into the >>> same crypto exception you have been reporting (state saving method >>> server) this points towards a bug in the non ajax part somewhere, I will >>> keep you informed about my results. >>> >>> Werner >>> >>> >>> Am 09.12.10 23:05, schrieb Werner Punz: >>> >>>> Ok another hint, there is a config param which has to be set to prevent >>>> the crypto exception which you face: >>>> see https://issues.apache.org/jira/browse/MYFACES-2606 >>>> >>>> see also http://myfaces.apache.org/core20/googleappenginesupport.html >>>> >>>> Werner >>>> >>>> >>>> >>>> Am 09.12.10 22:10, schrieb ken keller: >>>> >>>>> I use both of those. >>>>> >>>>> I've started playing with wicket because Gavin recommends JSF or wicket >>>>> (both have component models). wicket doesn't appear to have active >>>>> component >>>>> libs like richfaces, primefaces, icefaces. >>>>> >>>>> I'm surprised that richfaces adores mojarra. The lists >>>>> http://java.net/projects/javaserverfaces/lists have low activity. >>>>> Issues >>>>> http://java.net/jira/browse/JAVASERVERFACES/ seem to get resolved. >>>>> >>>>> I can only dream of a framework: >>>>> * Reliable on gae. >>>>> * Several component lib developers conforming to an open look&feel std >>>>> like >>>>> nimbus. >>>>> * Client-side validation first to avoid server load& bandwidth for >>>>> silly >>>>> mistakes like not filling in a required field. >>>>> >>>>> On Thu, Dec 9, 2010 at 12:21 PM, Werner Punz<[email protected]> >>>>> wrote: >>>>> >>>>> Ok here is a hint which could indicate to the root of your problems, >>>>>> apparently GAE has session handling disabled you have to enable it. >>>>>> >>>>>> >>>>>> <sessions-enabled>true</sessions-enabled >>>>>> >>>>>> in the appeninge-web.xml file to enable it. >>>>>> >>>>>> >>>>>> Also some links indicate you should only use state saving client. >>>>>> >>>>>> >>>>>> >>>>>> Werner >>>>>> >>>>>> >>>>>> Am 09.12.10 20:42, schrieb Werner Punz: >>>>>> >>>>>> Ok this could be an indication to the viewstate issue you are facing >>>>>>> >>>>>>> http://java.dzone.com/news/jsf2-configuration-google-app >>>>>>> >>>>>>> seems like GAE has its fair share of problems or the underlying >>>>>>> container of GAE that is. >>>>>>> >>>>>>> All I can say, if it is just for learning purposes try to program >>>>>>> your >>>>>>> program locally and when it comes to deployment find a hoster which >>>>>>> allows you to use your own app stack. As for the ajax stuff, I will >>>>>>> give >>>>>>> GAE a try as I said, but I assume your problem is related to the >>>>>>> other >>>>>>> session scope problems GAE seems to have. >>>>>>> >>>>>>> >>>>>>> Werner >>>>>>> >>>>>>> >>>>>>> Am 09.12.10 20:38, schrieb Werner Punz: >>>>>>> >>>>>>> Ok I cannot really help with the viewExpired Problem except for >>>>>>>> that it >>>>>>>> indicates a problem on GAEs side. >>>>>>>> >>>>>>>> But I ran your Ajax problem quickly through and for me it works >>>>>>>> locally >>>>>>>> here. So I assume you run into a GAE related issue here as well. >>>>>>>> >>>>>>>> I will do a GAE testsetup as my scarce time permits to run this >>>>>>>> through, >>>>>>>> but I really assume a gae related problem or a deployment related >>>>>>>> problem here. >>>>>>>> It would be interesting to know if in the ajax case the browser >>>>>>>> throws >>>>>>>> any errors. What does the browser error console say? >>>>>>>> >>>>>>>> >>>>>>>> Werner >>>>>>>> >>>>>>>> Am 24.10.10 20:14, schrieb ken keller: >>>>>>>> >>>>>>>> Yesterday evening I noticed java.io.InvalidObjectException stopped >>>>>>>>> being >>>>>>>>> thrown. I don't know why but I hope it is related to switching from >>>>>>>>> eclipse >>>>>>>>> to intellij& not due to gae. (I also learned facelets is built into >>>>>>>>> jsf2 so >>>>>>>>> a separate jar isn't required.) >>>>>>>>> >>>>>>>>> I have two new problems which only happen on live gae--not dev gae: >>>>>>>>> >>>>>>>>> 1) I'm testing jsf-basics.zip on >>>>>>>>> http://www.coreservlets.com/JSF-Tutorial/jsf2/code/. >>>>>>>>> * open bank-lookup.jsf >>>>>>>>> * fill in form >>>>>>>>> * click [Show Current Balance] >>>>>>>>> * the correct jsf page is displayed >>>>>>>>> * click chrome's Back >>>>>>>>> * javax.faces.application.ViewExpiredException is thrown (whether >>>>>>>>> using >>>>>>>>> client or server state saving): >>>>>>>>> >>>>>>>>> org.apache.myfaces.shared_impl.util.StateUtils reconstruct: View >>>>>>>>> State >>>>>>>>> cannot be reconstructed >>>>>>>>> javax.faces.FacesException: >>>>>>>>> javax.faces.application.ViewExpiredException >>>>>>>>> at >>>>>>>>> >>>>>>>>> org.apache.myfaces.shared_impl.util.StateUtils.decrypt(StateUtils.java: >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> 490) >>>>>>>>> at >>>>>>>>> >>>>>>>>> >>>>>>>>> org.apache.myfaces.shared_impl.util.StateUtils.reconstruct(StateUtils.java: >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> 378) >>>>>>>>> at >>>>>>>>> >>>>>>>>> >>>>>>>>> org.apache.myfaces.renderkit.html.HtmlResponseStateManager.getSavedState(Ht >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> mlResponseStateManager.java: >>>>>>>>> 213) >>>>>>>>> at >>>>>>>>> >>>>>>>>> >>>>>>>>> org.apache.myfaces.renderkit.html.HtmlResponseStateManager.getState(HtmlRes >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> ponseStateManager.java: >>>>>>>>> 160) >>>>>>>>> at >>>>>>>>> >>>>>>>>> >>>>>>>>> org.apache.myfaces.view.facelets.DefaultFaceletsStateManagementStrategy.res >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> toreView >>>>>>>>> >>>>>>>>> (DefaultFaceletsStateManagementStrategy.java: >>>>>>>>> 140) >>>>>>>>> at >>>>>>>>> >>>>>>>>> >>>>>>>>> org.apache.myfaces.application.jsp.JspStateManagerImpl.restoreView(JspState >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> ManagerImpl.java: >>>>>>>>> 388) >>>>>>>>> at >>>>>>>>> >>>>>>>>> >>>>>>>>> org.apache.myfaces.shared_impl.view.ViewDeclarationLanguageBase.restoreView >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> (ViewDeclarationLanguageBase.java: >>>>>>>>> 106) >>>>>>>>> at >>>>>>>>> >>>>>>>>> >>>>>>>>> org.apache.myfaces.view.facelets.FaceletViewDeclarationLanguage.restoreView >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> (FaceletViewDeclarationLanguage.java: >>>>>>>>> 1277) >>>>>>>>> .... >>>>>>>>> >>>>>>>>> This doesn't happen if I submit the form with errors, fix them,& >>>>>>>>> click >>>>>>>>> [Show Current Balance] button: >>>>>>>>> * open bank-lookup.jsf >>>>>>>>> * click [Show Current Balance] button >>>>>>>>> * validation errors are shown (post back) >>>>>>>>> * correct errors >>>>>>>>> * click [Show Current Balance] button >>>>>>>>> * click Back button >>>>>>>>> >>>>>>>>> 2) A simple use of<f:ajax> doesn't update: >>>>>>>>> >>>>>>>>> <h:selectOneMenu id="menu" value="#{bankingBean.customerId}"> >>>>>>>>> <f:ajax event="change" execute="@this" render="register"/> >>>>>>>>> <f:selectItems value="#{bankingBean.customerIds}"/> >>>>>>>>> </h:selectOneMenu> >>>>>>>>> <h:outputText id="register" value="#{bankingBean.customerId}"/> >>>>>>>>> >>>>>>>>> >>>>>>>>> On Thu, Oct 21, 2010 at 9:32 PM, ken keller<[email protected]> >>>>>>>>> wrote: >>>>>>>>> >>>>>>>>> I'm a JSF2/myfaces rookie. I have it working w/ Eclipse Helios& gae >>>>>>>>> >>>>>>>>>> Eclipse plugin. When I deploy it& visit my test page, a blank >>>>>>>>>> page is >>>>>>>>>> displayed& the log entry is appended to this message. It >>>>>>>>>> appears to >>>>>>>>>> be a >>>>>>>>>> session deserialization problem. Thx. for your help. >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> javax.servlet.ServletException: java.lang.RuntimeException: >>>>>>>>>> java.io.InvalidObjectException: enum constant attributes does not >>>>>>>>>> exist in class javax.faces.component.UIComponent$PropertyKeys >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> com.google.apphosting.runtime.jetty.AppVersionHandlerMap.handle(AppVersionHandlerMap.java:240) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at org.mortbay.jetty.Server.handle(Server.java:326) >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable(RpcRequestParser.java:76) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404) >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:135) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> com.google.apphosting.runtime.JavaRuntime.handleRequest(JavaRuntime.java:261) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> com.google.apphosting.base.RuntimePb$EvaluationRuntime$6.handleBlockingRequest(RuntimePb.java:8486) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> com.google.apphosting.base.RuntimePb$EvaluationRuntime$6.handleBlockingRequest(RuntimePb.java:8484) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> com.google.net.rpc.impl.BlockingApplicationHandler.handleRequest(BlockingApplicationHandler.java:24) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> com.google.net.rpc.impl.RpcUtil.runRpcInApplication(RpcUtil.java:418) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> com.google.net.rpc.impl.Server$RpcTask.runInContext(Server.java:572) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> com.google.tracing.TraceContext$TraceContextRunnable$1.run(TraceContext.java:448) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> com.google.tracing.TraceContext.runInContext(TraceContext.java:688) >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:326) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:318) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> com.google.tracing.TraceContext$TraceContextRunnable.run(TraceContext.java:446) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at java.lang.Thread.run(Thread.java:636) >>>>>>>>>> Caused by: java.lang.RuntimeException: >>>>>>>>>> java.io.InvalidObjectException: enum constant attributes does not >>>>>>>>>> exist in class javax.faces.component.UIComponent$PropertyKeys >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> com.google.apphosting.runtime.jetty.SessionManager.deserialize(SessionManager.java:413) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> com.google.apphosting.runtime.jetty.SessionManager.createSessionFromEntity(SessionManager.java:376) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> com.google.apphosting.runtime.jetty.SessionManager.loadSession(SessionManager.java:314) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> com.google.apphosting.runtime.jetty.SessionManager.getSession(SessionManager.java:284) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> org.mortbay.jetty.servlet.AbstractSessionManager.getHttpSession(AbstractSessionManager.java:237) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> org.mortbay.jetty.servlet.SessionHandler.setRequestedId(SessionHandler.java:246) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:136) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> com.google.apphosting.runtime.jetty.AppVersionHandlerMap.handle(AppVersionHandlerMap.java:238) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> ... 21 more >>>>>>>>>> Caused by: java.io.InvalidObjectException: enum constant >>>>>>>>>> attributes >>>>>>>>>> does not exist in class >>>>>>>>>> javax.faces.component.UIComponent$PropertyKeys >>>>>>>>>> at java.io.ObjectInputStream.readEnum(ObjectInputStream.java:1721) >>>>>>>>>> at >>>>>>>>>> java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1343) >>>>>>>>>> at >>>>>>>>>> java.io.ObjectInputStream.readArray(ObjectInputStream.java:1684) >>>>>>>>>> at >>>>>>>>>> java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1340) >>>>>>>>>> at >>>>>>>>>> java.io.ObjectInputStream.readArray(ObjectInputStream.java:1684) >>>>>>>>>> at >>>>>>>>>> java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1340) >>>>>>>>>> at >>>>>>>>>> java.io.ObjectInputStream.readArray(ObjectInputStream.java:1684) >>>>>>>>>> at >>>>>>>>>> java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1340) >>>>>>>>>> at >>>>>>>>>> java.io.ObjectInputStream.readObject(ObjectInputStream.java:368) >>>>>>>>>> at java.util.HashMap.readObject(HashMap.java:1047) >>>>>>>>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at java.lang.reflect.Method.invoke(Method.java:616) >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:991) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1865) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1770) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1346) >>>>>>>>>> at >>>>>>>>>> java.io.ObjectInputStream.readArray(ObjectInputStream.java:1684) >>>>>>>>>> at >>>>>>>>>> java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1340) >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> java.io.ObjectInputStream.skipCustomData(ObjectInputStream.java:1928) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1890) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1770) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1346) >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> java.io.ObjectInputStream.skipCustomData(ObjectInputStream.java:1928) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1890) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1770) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1346) >>>>>>>>>> at >>>>>>>>>> java.io.ObjectInputStream.readObject(ObjectInputStream.java:368) >>>>>>>>>> at java.util.HashMap.readObject(HashMap.java:1047) >>>>>>>>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at java.lang.reflect.Method.invoke(Method.java:616) >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:991) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1865) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1770) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> at >>>>>>>>>> java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1346) >>>>>>>>>> at >>>>>>>>>> java.io.ObjectInputStream.readObject(ObjectInputStream.java:368) >>>>>>>>>> at >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> com.google.apphosting.runtime.jetty.SessionManager.deserialize(SessionManager.java:411) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> ... 30 more >>>>>>>>>> Caused by: java.lang.IllegalArgumentException: No enum const class >>>>>>>>>> javax.faces.component.UIComponent$PropertyKeys.attributes >>>>>>>>>> at java.lang.Enum.valueOf(Enum.java:214) >>>>>>>>>> at java.io.ObjectInputStream.readEnum(ObjectInputStream.java:1719) >>>>>>>>>> ... 69 more >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>> >>>>>> >>>>> >>>> >>>> >>>> >>> >>> >>> >> >> >> > >
