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From "Aaron Mulder" <ammul...@alumni.princeton.edu>
Subject Re: Help!!! Problems using KernelManagementHelper got from getRemoteKernelManager()
Date Tue, 25 Apr 2006 12:08:07 GMT
I don't think there's going to be a fix for 1.1 -- if a method returns
a GBean we don't have a way to serialize it to the client.  For 1.2 I
think we can work some magic in the proxies, and/or switch to a
different protocol altogether.

Thanks,
    Aaron

On 4/25/06, Vamsavardhana Reddy <c1vamsi1c@gmail.com> wrote:
> Hi,
>
>  I am running the following piece of code.
>
>          KernelManagementHelper mgr =
> KernelManagementHelper.getRemoteKernelManager("localhost",
> "system", "manager");
>          J2EEDomain domain = mgr.getDomains()[0];
>          String[] servers = domain.getServers();
>          System.out.println(servers[0]);
>          J2EEServer[] j2eeServers = domain.getServerInstances();
>          System.out.println(j2eeServers[0]);
>
>  domain.getServers() runs fine, whereas, domain.getServerInstances() throws
> an exception.  Please suggest a fix or a workaround for this problem.
>
>  -Vamsi
>  ----------------------------------------------
>  java.rmi.UnmarshalException: error unmarshalling return; nested exception
> is:
>      java.io.WriteAbortedException: writing aborted;
> java.io.NotSerializableException:
> org.apache.geronimo.management.geronimo.J2EEServer$$EnhancerByCGLIB$$d620c0d0
>      at
> sun.rmi.server.UnicastRef.invoke(UnicastRef.java:164)
>      at
> javax.management.remote.rmi.RMIConnectionImpl_Stub.invoke(Unknown
> Source)
>      at
> mx4j.remote.rmi.ClientInvoker.invoke(ClientInvoker.java:207)
>      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
> Method)
>      at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>      at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>      at java.lang.reflect.Method.invoke(Method.java:324)
>      at mx4j.remote.ClientProxy.invoke(ClientProxy.java:32)
>      at
> mx4j.remote.rmi.ClientUnmarshaller.chain(ClientUnmarshaller.java:65)
>      at
> mx4j.remote.rmi.ClientUnmarshaller.invoke(ClientUnmarshaller.java:54)
>      at $Proxy0.invoke(Unknown Source)
>      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
> Method)
>      at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>      at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>      at java.lang.reflect.Method.invoke(Method.java:324)
>      at mx4j.remote.ClientProxy.invoke(ClientProxy.java:32)
>      at
> mx4j.remote.rmi.ClientExceptionCatcher.invoke(ClientExceptionCatcher.java:40)
>      at $Proxy0.invoke(Unknown Source)
>      at
> org.apache.geronimo.system.jmx.KernelDelegate.invokeKernel(KernelDelegate.java:880)
>      at
> org.apache.geronimo.system.jmx.KernelDelegate.getAttribute(KernelDelegate.java:485)
>      at
> org.apache.geronimo.kernel.basic.KernelGetAttributeInvoker.invoke(KernelGetAttributeInvoker.java:36)
>      at
> org.apache.geronimo.system.jmx.JMXProxyMethodInterceptor.intercept(JMXProxyMethodInterceptor.java:89)
>      at
> org.apache.geronimo.management.geronimo.J2EEDomain$$EnhancerByCGLIB$$45e3ccef.getServerInstances(<generated>)
>      at PeekRemoteKernel.main(PeekRemoteKernel.java:19)
>  Caused by: java.io.WriteAbortedException: writing aborted;
> java.io.NotSerializableException:
> org.apache.geronimo.management.geronimo.J2EEServer$$EnhancerByCGLIB$$d620c0d0
>      at
> java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1278)
>      at
> java.io.ObjectInputStream.readArray(ObjectInputStream.java:1603)
>      at
> java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1271)
>      at
> java.io.ObjectInputStream.readObject(ObjectInputStream.java:324)
>      at
> sun.rmi.server.UnicastRef.unmarshalValue(UnicastRef.java:297)
>      at
> sun.rmi.server.UnicastRef.invoke(UnicastRef.java:146)
>      ... 23 more
>  Caused by: java.io.NotSerializableException:
> org.apache.geronimo.management.geronimo.J2EEServer$$EnhancerByCGLIB$$d620c0d0
>      at java.io.ObjectOutputStream.writeObject0(Unknown
> Source)
>      at java.io.ObjectOutputStream.writeArray(Unknown
> Source)
>      at java.io.ObjectOutputStream.writeObject0(Unknown
> Source)
>      at java.io.ObjectOutputStream.writeObject(Unknown
> Source)
>      at sun.rmi.server.UnicastRef.marshalValue(Unknown
> Source)
>      at sun.rmi.server.UnicastServerRef.dispatch(Unknown
> Source)
>      at sun.rmi.transport.Transport$1.run(Unknown Source)
>      at java.security.AccessController.doPrivileged(Native
> Method)
>      at sun.rmi.transport.Transport.serviceCall(Unknown
> Source)
>      at
> sun.rmi.transport.tcp.TCPTransport.handleMessages(Unknown
> Source)
>      at
> sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(Unknown
> Source)
>      at java.lang.Thread.run(Unknown Source)
>
>

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