[subscription-list: null] message in logs, cannot create a n

[weinstock.gabriel]

Hi,
I'm trying to create an XMBean that listens for notifications from a Timer XMBean. It should simply log the notification and handback when it receives one. However, I never see the logging statement indicating my MBean has started up (or shut down for that matter), and when I look at the logs, I see these entries around my code:

2007-06-04 15:11:23,960 DEBUG [org.jboss.system.ServiceCreator] About to create xmbean object: domain.com:service=OmsService with code: com.domain.oms.xmbeans.impl.OmsService with descriptor: META-INF/oms-xmbean.xml
2007-06-04 15:11:23,991 DEBUG [org.jboss.system.ServiceCreator] Created bean: domain.com:service=OmsService
2007-06-04 15:11:23,991 DEBUG [org.jboss.system.ServiceConfigurator] SubscriptionList set to [subscription-list: null] in domain.com:service=OmsService

I'm putting all of my class files, the jboss-service.xml, and the oms-xmbean.xml file in a .sar file (oms.sar) and deploying to a JBoss 4.2.0 GA server. Here are the two source code files:

OmsService.java:

package com.domain.oms.xmbeans.impl;

import org.jboss.system.ListenerServiceMBeanSupport;
import org.jboss.logging.Logger;

import javax.management.Notification;

import com.domain.oms.xmbeans.OmsServiceMBean;

public class OmsService extends ListenerServiceMBeanSupport implements OmsServiceMBean {
 private static final Logger LOG = Logger.getLogger(OmsService.class.getName());

 public OmsService() {
 super();
 }
 /*
 public String getName() {
 return "OmsService";
 }
 */
 public void startService() throws Exception {
 LOG.info("oms service starting up");
 super.subscribe(true);
 }

 public void stopService() throws Exception {
 LOG.info("stopping oms service");
 super.unsubscribe();
 }

 public void handleNotification2(Notification notification, Object handback) {
 LOG.info("got " + notification + ", " + handback);
 }
}

OmsServiceMBean.java:

package com.domain.oms.xmbeans;

import org.jboss.system.ListenerServiceMBean;

public interface OmsServiceMBean extends ListenerServiceMBean {
}

And the .xml files:

jboss-service.xml:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE server PUBLIC "-//JBoss//DTD MBean Service 4.2//EN" "http://www.jboss.org/j2ee/dtd/jboss-service_4_2.dtd">
<server>
 <mbean code="com.domain.oms.xmbeans.impl.OmsService" name="domain.com:service=OmsService" xmbean-dd="META-INF/oms-xmbean.xml">
 <attribute name="SubscriptionList">
 <subscription-list>
 <mbean name="jboss.monitor:name=Heartbeat,type=Timer">
 <notification type="jboss.monitor.heartbeat"/>
 </mbean>
 </subscription-list>
 </attribute>
 </mbean>
</server>

oms-xmbean.xml:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mbean PUBLIC "-//JBoss//DTD JBOSS XMBEAN 1.2//EN" "http://www.jboss.org/j2ee/dtd/jboss_xmbean_1_2.dtd">
<mbean>
 <description>oms service</description>
 <class>com.domain.oms.xmbeans.impl.OmsService</class>
 <constructor>
 <description>the default constructor</description>
 <name>OmsService</name>
 </constructor>
 <attribute access="write-only" setMethod="setSubscriptionList">
 <name>SubscriptionList</name>
 <type>org.w3c.dom.Element</type>
 </attribute>
 <operation>
 <name>startService</name>
 <return-type>void</return-type>
 </operation>
 <operation>
 <name>stopService</name>
 <return-type>void</return-type>
 </operation>
 <operation>
 <name>handleNotification2</name>
 <parameter>
 <name>notification</name>
 <type>javax.management.Notification</type>
 </parameter>
 <parameter>
 <name>handback</name>
 <type>java.lang.Object</type>
 </parameter>
 <return-type>void</return-type>
 </operation>
</mbean>

Can someone tell me what I'm doing wrong? I've been debugging this for the last 4 days and getting nowhere. I can't determine why the subscription-list element is coming back null, or why the service start method is never invoked.

By the way, I did enable the Timer (heartbeat) service in jboss-monitoring.xml.

Any help would be SO greatly appreciated,
Thanks,
Gabe