MBean deployment - EJB3 and call

[redcar]

Hallo,

I try to deploy a MBean with EJB3 annotation on the server and call it from a sessionBean. The MBean looks like:

package trail.jmx;

import org.jboss.annotation.ejb.Service;
import org.jboss.annotation.ejb.Management;

@Service (objectName="trail:service=calculator")
@Management(Calculator.class)
public class CalculatorMBean implements Calculator {

 public double calculate (int start, int end, double saving) {
 double tmp = Math.pow(1. + growthrate / 12., 12. * (end - start) + 1);
 return saving * 12. * (tmp - 1) / growthrate;
 }
....

In My SessionBean I want to call it with:

 private Object callXMB_Calculator(String operationName, Object[] params)
 {
 Object result = null;

 try
 {
 MBeanServer mbs = (MBeanServer) MBeanServerFactory.findMBeanServer(null).iterator().next();
 ObjectName oName = new ObjectName("jboss.j2ee:jar=CalcMBean.jar,name=CalculatorMBean,service=EJB3");

 String[] signature = null;
 if (params != null)
 {
 signature = new String[params.length];

 for (int i = 0; i < params.length; ++i)
 {
 signature = params.getClass().getName();
 }
 }

 result = mbs.invoke(oName, operationName, params, signature);

I call the function like this:

 callXMB_Calculator("calculate", new Object[]{1,2,4d});

But when I call the service-Method, I get a ReflectionException
Caused by: java.lang.IllegalArgumentException: Unable to find operation calculate(java.lang.Integer,java.lang.Integer,java.lang.Double)

When the server ist starting, I get the message:

2008-05-02 09:30:35,281 INFO [org.jboss.ejb3.JmxKernelAbstraction] installing MBean: jboss.j2ee:jar=CalcMBean.jar,name=CalculatorMBean,service=EJB3 with dependencies:
2008-05-02 09:30:35,468 INFO [org.jboss.ejb3.EJBContainer] STARTED EJB: trail.jmx.CalculatorMBean ejbName: CalculatorMBean
2008-05-02 09:30:35,531 INFO [STDOUT] Calculator - Creating

To deploy the service, I have only copied the .jar file into the deploy directory. It contains only the .class files.
With the use of 'old' XMBean' I have no problem, but I would prefere the EJB3 style. What can I do?

Thank you,
Werner Hofmann

[jaikiran]

Does changing the method to

private Object callXMB_Calculator(String operationName, Object[] params, String[] signature)
 {
 Object result = null;

 try
 {
 MBeanServer mbs = (MBeanServer) MBeanServerFactory.findMBeanServer(null).iterator().next();
 ObjectName oName = new ObjectName("jboss.j2ee:jar=CalcMBean.jar,name=CalculatorMBean,service=EJB3");


 }

 result = mbs.invoke(oName, operationName, params, signature);

 }

and also changing the code, for invoking, to:

callXMB_Calculator("calculate", new Object[]{1,2,4d},new String[] {"int","int","double"});

work?

[redcar]

I know what you are thinking: the Objecttype of the parameters in the service is int and not java.lang.Integer.

I have changed the code inside the Service to java.lang.Integer and so on. And I have used your type of service-call.

But I allways get the ReflectionException. The parameter type now equals. I think this is not the error anymore.

A XMBean I have to install into a sar directory. The ejb3-Service I have installed as .jar file inside a normal folder in the deploy directory. Can this be the error?