refresh-home-on-connect-failure no catching NoSuchObjectException

[stephane599]

Hello,

I have a problem with the refresh-home-on-connect-failure attribute. My front end use an remote ejb which I declare like this:

<jee:remote-slsb id="contingentService" jndi-name="${service.jndi.url}"
          business-interface="MyService"
          lookup-home-on-startup="true" refresh-home-on-connect-failure="true">
</jee:remote-slsb>

When I restart my backend (without restarting my frontend), I get an exception like this :

javax.ejb.EJBException: The object identified by: '312' could not be found.  Either it was has not been exported or it has been collected by the distributed garbage collector.; nested exception is: java.rmi.NoSuchObjectException: The object identified by: '312' could not be found.  Either it was has not been exported or it has been collected by the distributed garbage collector.
	at weblogic.ejb.container.internal.RemoteBusinessIntfProxy.unwrapRemoteException(RemoteBusinessIntfProxy.java:123)
	at weblogic.ejb.container.internal.RemoteBusinessIntfProxy.invoke(RemoteBusinessIntfProxy.java:102)
	at $Proxy184.getLimitedWorkerInformation(Unknown Source)
	at sun.reflect.GeneratedMethodAccessor483.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.springframework.remoting.rmi.RmiClientInterceptorUtils.invokeRemoteMethod(RmiClientInterceptorUtils.java:108)
	at org.springframework.ejb.access.SimpleRemoteSlsbInvokerInterceptor.doInvoke(SimpleRemoteSlsbInvokerInterceptor.java:98)
	at org.springframework.ejb.access.AbstractRemoteSlsbInvokerInterceptor.invokeInContext(AbstractRemoteSlsbInvokerInterceptor.java:137)
	at org.springframework.ejb.access.AbstractSlsbInvokerInterceptor.invoke(AbstractSlsbInvokerInterceptor.java:191)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
	at $Proxy185.getLimitedWorkerInformation(Unknown Source)
	at be.smals.contingent.web.components.controller.OverviewContingentController.init(OverviewContingentController.java:39)
	at sun.reflect.GeneratedMethodAccessor482.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at com.sun.faces.vendor.WebContainerInjectionProvider.invokeAnnotatedMethod(WebContainerInjectionProvider.java:113)
	at com.sun.faces.vendor.WebContainerInjectionProvider.invokePostConstruct(WebContainerInjectionProvider.java:95)
	at com.sun.faces.mgbean.BeanBuilder.invokePostConstruct(BeanBuilder.java:223)
	at com.sun.faces.mgbean.BeanBuilder.build(BeanBuilder.java:105)
	at com.sun.faces.mgbean.BeanManager.createAndPush(BeanManager.java:409)
	at com.sun.faces.mgbean.BeanManager.create(BeanManager.java:269)
	at com.sun.faces.el.ManagedBeanELResolver.resolveBean(ManagedBeanELResolver.java:244)
	at com.sun.faces.el.ManagedBeanELResolver.getValue(ManagedBeanELResolver.java:116)
	at com.sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELResolver.java:176)
	at com.sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELResolver.java:203)
	at com.sun.el.parser.AstIdentifier.getValue(AstIdentifier.java:68)
	at com.sun.el.parser.AstValue.getValue(AstValue.java:107)
	at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:192)
	at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109)
	at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:193)
	at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:181)
	at javax.faces.component.UIOutput.getValue(UIOutput.java:169)
	at sun.reflect.GeneratedMethodAccessor396.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at com.sun.faces.facelets.util.DevTools.writeAttributes(DevTools.java:375)
	at com.sun.faces.facelets.util.DevTools.writeStart(DevTools.java:424)
	at com.sun.faces.facelets.util.DevTools.writeComponent(DevTools.java:245)
	at com.sun.faces.facelets.util.DevTools.writeComponent(DevTools.java:264)
	at com.sun.faces.facelets.util.DevTools.writeComponent(DevTools.java:256)
	at com.sun.faces.facelets.util.DevTools.writeComponent(DevTools.java:264)
	at com.sun.faces.facelets.util.DevTools.writeComponent(DevTools.java:264)
	at com.sun.faces.facelets.util.DevTools.debugHtml(DevTools.java:181)
	at com.sun.faces.facelets.tag.ui.UIDebug.writeDebugOutput(UIDebug.java:137)
	at com.sun.faces.facelets.tag.ui.UIDebug.encodeBegin(UIDebug.java:122)
	at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1672)
	at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1677)
	at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:399)
	at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:131)
	at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:121)
	at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
	at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:509)
	at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
	at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
	at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300)
	at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
	at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
	at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)
	at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
	at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.doIt(WebAppServletContext.java:3684)
	at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3650)
	at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
	at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
	at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2268)
	at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2174)
	at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1446)
	at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
	at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
Caused by: java.rmi.NoSuchObjectException: The object identified by: '312' could not be found.  Either it was has not been exported or it has been collected by the distributed garbage collector.
	at weblogic.rmi.internal.OIDManager.getServerReference(OIDManager.java:251)
	at weblogic.rmi.internal.CollocatedRemoteRef.getOutboundRequest(CollocatedRemoteRef.java:51)
	at weblogic.rmi.internal.BasicRemoteRef.invoke(BasicRemoteRef.java:211)
	at Service_pyaozn_ServiceImpl_1033_WLStub.getInformation(Unknown Source)
	at sun.reflect.GeneratedMethodAccessor484.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at weblogic.ejb.container.internal.RemoteBusinessIntfProxy.invoke(RemoteBusinessIntfProxy.java:84)
	... 69 more

It seems that the EJBException (caused by the NoSuchObjectException) is not catch and the refresh-home-on-connect-failure is not triggered.

If I set cache-home=false, the problem doesn't occur anymore but I would prefer to keep cache-home=true for performance issues.

Can anyone help me?

Thanks,

Stéphane

[stephane599]

Up please...

[Marten Deinum]

I suggest a read of the javadoc... Spring expects a certain rmi exception (a couple of them) and not an EJBException. You could extend the SimpleRemoteStatelessSessionProxyFactoryBean and override the doInvoke method, and catch EJBException and when the targetException is connection exception handle it else rethrow.

protected Object doInvoke(MethodInvocation invocation) throws Throwable {
		Object ejb = null;
		try {			
			return super.doInvoke(invocation);
		} catch (EJBException ex) {
			Throwable targetEx = ex.getTargetException();
			if (targetEx instanceof RemoteException) {
				RemoteException rex = (RemoteException) targetEx;
				throw RmiClientInterceptorUtils.convertRmiAccessException(
				    invocation.getMethod(), rex, isConnectFailure(rex), getJndiName());
			}
			else if (targetEx instanceof CreateException) {
				throw RmiClientInterceptorUtils.convertRmiAccessException(
				    invocation.getMethod(), targetEx, "Could not create remote EJB [" + getJndiName() + "]");
			}
			throw targetEx;
		}
}

Drawback is that you now need to use this custom class instead of using the namespace to configure your EJB lookups.

[stephane599]

OK.

Thanks for the answer.