[JBoss-user] problem accessing an inner class from an MBean

[George Icriverzi]

Hi,

Here's my problem, please reply if you have any ideas about its cause:

I have an mbean, and an inner class defined inside the mbean.
In the start() of the mbean, I try to instantiate the inner class. Using 
jboss-3.0.7 was ok, but jboss-3.2.1 throws IllegalAccessError when I try 
to deploy . It looks like this:

WARN  [ServiceController] Problem starting service eu:service=CService
java.lang.IllegalAccessError: try to access class 
org.ca.ejb.services.CService$Scanner from class org.ca.ejb.services.CService
       at org.ca.ejb.services.CService.start(CService.java:209)
       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 
org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBeanDispatcher.java:284)
...... & Co.

The start() contains :

  public void start() throws Exception{
       .....
     scanner = new Scanner( delay ); // here I get the error
       .....
   }
and the inner class looks like:

  private class Scanner extends Thread{
     int timeout;
     Scanner(int delay){
           ....
     }  
   }

If I set the inner class and its constructor as public, the error is the 
following, at the same line:

WARN  [ServiceController] Problem starting service eu:service=CService
java.lang.LinkageError: loader constraints violated when linking 
org/ca/ejb/services/CService class
       at org.ca.ejb.services.CService.start(CService.java:209)
       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 
org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBeanDispatcher.java:284)
       at 
org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:549)
       at 
org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:966)
....

In both cases the mbean does not start.
Does anyone have any explanation about this?
Again, this is happening when I use jboss-3.2.1 .
Thanks,
George


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