Coherence Mbeans doesnt support weblogic standard

Question

Hi,
According to weblogic standard, the mbeans should be called:
domain:Name=name,Type=type[,Location=serverName][,TypeOfParentMBean=NameOfParentMBean][,TypeOfParentMBean1=NameOfParentMBean1]...
The Mbeans I looked at use the type attribute instead of Type.
The code I use queries the server using "Type" and therefore I dont get as a result any of the coherence mbeans, just the weblogic ones.
What can I do about it? (the code is already deployed on mulitple customer sites)
Also, when I use the connection to query all mbeans for example:
mbeanServerConnection.queryNames(null, null);
I dont get back the coherence mbeans. is that because of the same problem?

Answer 1

Hi,
Have you tried using an MBean Notification Listener? You can register for MBean events on MBeans that provide notifications. In this case we want to know when a Coherence MBean is regaitered so we can access it so you can listen to events on the JVM's own JMImplementation:type=MBeanServerDelegate MBean. Among other things, this MBean fires an event each time an MBean is registered.
Here is an example
final MBeanServer mBeanServer = ManagementFactory.getPlatformMBeanServer();
NotificationFilter filter = new NotificationFilter() {
    @Override
    public boolean isNotificationEnabled(Notification notification) {
        return "JMX.mbean.registered".equals(notification.getType());
NotificationListener listener = new NotificationListener() {
    @Override
    public void handleNotification(Notification notification, Object handback) {
        try {
            ObjectName mBeanName = ((MBeanServerNotification) notification).getMBeanName();
            if ("Node".equals(mBeanName.getKeyProperty("type"))) {
                System.out.println("Node MBean registered " + mBeanName);
                Integer member = (Integer) mBeanServer.getAttribute(mBeanName, "Id");
                System.out.println("Node Member ID = " + member);
        } catch (Exception e) {
            e.printStackTrace();
mBeanServer.addNotificationListener(new ObjectName("JMImplementation:type=MBeanServerDelegate"), listener, filter, null);In the code above we create a NotificationFilter that will only pass MBean registration events. We create a listener that looks for MBean registrations where the "type" attribute of the MBean's ObjectName is "Node", i.e. we have a Coherence Node MBean registration. The listener then gets the Nodes member Id and prints it. You should be able to figure out from that how to do other things.
JK