MBeans: Unable to cast the returned object instance

[ulmer]

Hi all,

executing a mbean method with a custom return type i can't cast the returned object instance to the appropriate data type.

ClassCastException:

java.lang.ClassCastException: mypackage.MyDto cannot be cast to mypackage.MyDto

MBean:

public interface MyMBean extends org.jboss.system.ServiceMBean {
...
 public MyDto holeMyDto(String test) throws Exception;
...
}

Dto (Data Transfer object)

public class MyDto implements Serializable {
 private static final long serialVersionUID = 3679919263323839707L;
...
}

Client (deployed in a separate .war)

 InitialContext ic = new InitialContext();
 String rmiadaptername = "jmx/invoker/RMIAdaptor";
 MBeanServerConnection mbsc = (MBeanServerConnection) ic.lookup(rmiadaptername);
 ObjectName objectName = new ObjectName(objectNameString);
 Object[] oa = { "P"};
 String[] sa = { "java.lang.String"};
 Object object = mbsc.invoke(objectName, "holeMyDto", oa, sa);
 DataPoolInfo result = (DataPoolInfo) object; // here comes the Exception

The execution from the jmx-console works fine. Please help.
Jboss 4.0.5 GA; Jdk 6.

[genman]

Use the javax.management.MBeanServerInvocationHandler class to forward calls to your MBean.

You have classcastexception since the same class is loaded in two different classloaders.

[ulmer]

"genman" wrote:
Use the javax.management.MBeanServerInvocationHandler class to forward calls to your MBean.

You have classcastexception since the same class is loaded in two different classloaders.

right. the same was here

http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4046736#4046736