Description for Standard MBean

Question

I want to make my Standard MBean verbose in JBoss jmx-console. DynamicMBean has getMBeanInfo() to do it. Method return MBeanInfo with description of MBean. But how I can to do the same thing for Standard MBean? E.g. I have following MBean interface:

public interface MyMBean {
  String f();
}

... with following implementation:

public class My implements MyMBean {
  public String f() {
    return "test";
  }
}

What should be done to add description in such example?

Thanks

Answer 1

For StandardMBeans there is no way for adding description or other meta information.

From the JavaDoc of MBeanInfo:

The remaining details of the MBeanInfo for a Standard MBean are not specified. This includes the description of the MBeanInfo and of any contained constructors, attributes, operations, and notifications; and the names and descriptions of parameters to constructors and operations.

So you need to use at least DynamicMBeans (or a ModelMBean or OpenMBean) for specifying this information. Spring can help you insofar as it allows the creation of DynamicMBeans via annotations, which at the end is even simpler to use than to write own StandardMBeans. Example (from the spring documentation) :

@ManagedResource(objectName="bean:name=testBean4",
                 description="My Managed Bean")
public class AnnotationTestBean {

    private int age;

    @ManagedAttribute(description="The Age Attribute", currencyTimeLimit=15)
    public int getAge() {
        return age;
    }
}

See this article for details.