richfaces ajax request throws 'no concurrent calls on stateful bean'
I have a well running application with JBoss 4.0.5, Seam 1.2.1 and RichFaces 3.1.4. But some impatient users are able to create the following exception by clicking several times on a RichFaces Component (in this case a simpleTogglePanel).
The EJB is defined as
@Stateful
@Scope(ScopeType.CONVERSATION)
@Name("tiaTabsAction")
@CacheConfig(idleTimeoutSeconds =
public class TiaTabsAction implements TiaTabs, Serializable {
...
I am reading the documentation at
http://docs.jboss.org/seam/2.0.1.GA/reference/en/html/conversations.html#d0e5208
(I know this is 2.0 but to my opinion in this context there is no significant change from Seam 1.2 to 2.0)
For this application there is no need to make things asynchronous. I would be happy if these requests would just be serialized.
Adding a
@Synchronized(timeout=30000)
@Name("tiaTabsAction")
changes the behaviour (I don't why) in getting a NPE. It seems that it is a new conversation object missing some data. But before 30 seconds are over.
Playing with the concurrent-request-timeout parameter also doesn't help.
So what can I do to make the application more robust?
Axel
javax.ejb.ConcurrentAccessException: no concurrent calls on stateful bean 'jboss.j2ee:service=EJB3,name=TiaTabsAction' (EJB3 4.3.13) at org.jboss.ejb3.stateful.StatefulInstanceInterceptor.invoke(StatefulInstanceInterceptor.java:73) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:77) at org.jboss.ejb3.security.Ejb3AuthenticationInterceptor.invoke(Ejb3AuthenticationInterceptor.java:102) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:47) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) at org.jboss.ejb3.stateful.StatefulContainer.localInvoke(StatefulContainer.java:203) at org.jboss.ejb3.stateful.StatefulLocalProxy.invoke(StatefulLocalProxy.java:98) at $Proxy288.getSecondLevelOtherWorkforceEstimationPerPhase(Unknown Source) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.jboss.seam.util.Reflections.invoke(Reflections.java:20) at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:31) at org.jboss.seam.intercept.ClientSideInterceptor$1.proceed(ClientSideInterceptor.java:72) at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:57) at org.jboss.seam.interceptors.RemoveInterceptor.aroundInvoke(RemoveInterceptor.java:40) at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:69) at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:103) at org.jboss.seam.intercept.ClientSideInterceptor.invoke(ClientSideInterceptor.java:50) at org.javassist.tmp.java.lang.Object_$$_javassist_77.getSecondLevelOtherWorkforceEstimationPerPhase(Object_$$_javassist_77.java) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.apache.myfaces.el.PropertyResolverImpl.getProperty(PropertyResolverImpl.java:438) at org.apache.myfaces.el.PropertyResolverImpl.getValue(PropertyResolverImpl.java:82) at com.sun.facelets.el.LegacyELContext$LegacyELResolver.getValue(LegacyELContext.java:141) at com.sun.el.parser.AstValue.getValue(Unknown Source) at com.sun.el.ValueExpressionImpl.getValue(Unknown Source) at com.sun.facelets.el.TagValueExpression.getValue(TagValueExpression.java:71) at com.sun.facelets.el.LegacyValueBinding.getValue(LegacyValueBinding.java:56) at javax.faces.component.UIData.getValue(UIData.java:1019) at org.ajax4jsf.component.UIDataAdaptor.getValue(UIDataAdaptor.java:1459) at org.ajax4jsf.component.SequenceDataAdaptor.getDataModel(SequenceDataAdaptor.java:70) at org.ajax4jsf.component.SequenceDataAdaptor.createDataModel(SequenceDataAdaptor.java:64) at org.ajax4jsf.component.UIDataAdaptor.getExtendedDataModel(UIDataAdaptor.java:592) at org.ajax4jsf.component.UIDataAdaptor.setRowKey(UIDataAdaptor.java:327) at org.ajax4jsf.component.UIDataAdaptor.iterate(UIDataAdaptor.java:968) at org.ajax4jsf.component.UIDataAdaptor.processDecodes(UIDataAdaptor.java:1001) at org.ajax4jsf.component.UIDataAdaptor.processDecodes(UIDataAdaptor.java:1011) at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:602) at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:602) at org.ajax4jsf.component.AjaxViewRoot$1.invoke(AjaxViewRoot.java:256) at org.ajax4jsf.context.JsfOneOneInvoker.invokeOnComponent(JsfOneOneInvoker.java:78) at org.ajax4jsf.context.JsfOneOneInvoker.invokeOnComponent(JsfOneOneInvoker.java:83) at org.ajax4jsf.context.JsfOneOneInvoker.invokeOnComponent(JsfOneOneInvoker.java:83) at org.ajax4jsf.context.JsfOneOneInvoker.invokeOnComponent(JsfOneOneInvoker.java:83) at org.ajax4jsf.context.JsfOneOneInvoker.invokeOnComponent(JsfOneOneInvoker.java:83) at org.ajax4jsf.context.JsfOneOneInvoker.invokeOnComponent(JsfOneOneInvoker.java:83) at org.ajax4jsf.context.JsfOneOneInvoker.invokeOnRegionOrRoot(JsfOneOneInvoker.java:58) at org.ajax4jsf.context.AjaxContextImpl.invokeOnRegionOrRoot(AjaxContextImpl.java:170) at org.ajax4jsf.component.AjaxViewRoot.processDecodes(AjaxViewRoot.java:276) at org.apache.myfaces.lifecycle.LifecycleImpl.applyRequestValues(LifecycleImpl.java:219) at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:71) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:137) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:63) at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:57) at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49) at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:60) at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49) at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45) at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49) at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:79) at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49) at org.jboss.seam.web.SeamFilter.doFilter(SeamFilter.java:84) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:141) at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:281) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432) at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) at org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869) at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664) at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112) at java.lang.Thread.run(Unknown Source)
