How to lookup RMI Adapter

[sivaku]

when i try to lookup the RMIAdapter(using the jndi name:jmx/rmi/RMIAdapter ),i get the exception like
"NameNotFoundException: jmx not bound" .

i used the following code to lookup the RMIAdapter


String adapterName = "jmx/rmi/RMIAdaptor";
ctx = new InitialContext();
Object obj = ctx.lookup(adapterName);
RMIAdaptor adaptor = (RMIAdaptor) obj;


Can anyone help me out.

Regards,
Sivaku

[genman]

Perhaps your jndi.properties is not set?

[anil.saldhana]

Looks like there may be an additional jndi.properties somewhere that is being used instead of the one you provided.

Have you specified a jndi.properties file?

[anil.saldhana]

Ignore my last post. I was answering a similar post without refreshing the browser.

[anil.saldhana]

http://wiki.jboss.org/wiki/Wiki.jsp?page=JNDIClientConfiguration

Also, use MBeanServerConnection instead of RMIAdaptor.

import javax.management.MBeanServerConnection;
....
 protected MBeanServerConnection rmiserver = null;
 private void getMBeanServer(InitialContext ctx)
 {
 if (ctx == null)
 throw new IllegalArgumentException("Initial Context passed is null");
 try
 {
 rmiserver = (MBeanServerConnection) ctx.lookup("jmx/invoker/RMIAdaptor");
 } catch (NamingException e)
 {
 log.debug(e);
 }
 if (rmiserver == null)
 throw new IllegalStateException( "MBeanServerConnection is null");

 }

MBeanServerConnection represents the MBeanServer and you can invoke operations as follows:

 /**
 * Invoke an Operation on the MBean
 *
 * @param oname ObjectName of the MBean
 * @param methodname Name of the operation on the MBean
 * @param pParams Arguments to the operation
 * @param pSignature Signature for the operation.
 * @return result from the MBean operation
 * @throws Exception
 */
 public Object invokeOperation(ObjectName oname,
 String methodname, Object[] pParams,
 String[] pSignature)
 throws Exception
 {
 Object result = null;
 if( rmiserver == null)
 throw new IllegalStateException( "MBeanServerConnection is null");
 try
 {
 result = rmiserver.invoke(oname, methodname, pParams, pSignature);
 } catch (Exception e)
 {
 log.debug(e);
 }

 return result;
 }

[sivaku]

jndi.properties is set,still i am getting the same error.

[adrian.bigland]

It may be obvious but if you can, write a little code that iterates over the
naming enumeration of your initial context, and print out what content it has, if any. This might give you a better idea of which naming service you are actaully connected to.

You could compare this with the JNDIView list you get from the JMX console - if the two differ then you are not connecting to the JNDI tree you thought you were connecting to.

This doesn't solve your problem, of course, but it might make things a bit clearer. If you can iterate to the adapter but can't look it up directly this would probably mean a spelling mistake in the JNDI name, for example.