Can I check to see if JNDI is available to bind objects into in WebSphere Application Server 5.0?
 Technote (FAQ)
 
Problem
Can I check to see if JNDI is available to bind objects into in WebSphere 5.0?
 
Solution
One method of checking to see if JNDI is available to bind objects into is to register a CustomService as a JMX notification listener for the server.started event. In doing this, you can know for sure that JNDI is available to bind objects into. This ability to register for a public callback notification when the server has completed startup is new in Websphere Application Server 5.0.

Here is some sample code :

import java.util.Properties;

import javax.management.Notification;
import javax.management.NotificationFilterSupport;
import javax.management.NotificationListener;
import javax.management.ObjectName;

import com.ibm.websphere.management.AdminServiceFactory;
import com.ibm.websphere.management.NotificationConstants;
import com.ibm.websphere.runtime.CustomService;

public class MyCustomService implements CustomService,
NotificationListener
{

public void initialize(Properties props) throws Exception
{
System.out.println("CustomService.initialize("+props+")");
NotificationFilterSupport filter = new NotificationFilterSupport();

filter.enableType(NotificationConstants.TYPE_J2EE_STATE_RUNNING);
ObjectName target = new ObjectName("WebSphere:*,type=Server");

AdminServiceFactory.getAdminService().addNotificationListenerExtended(ta
rget, this, filter, null);

}

public void shutdown()
{
System.out.println("CustomService.shutdown()");
}

public void handleNotification(Notification n, Object handback){

System.out.println("It's ready to bind into JNDI.");
}
}
 
 
Cross Reference information
Segment Product Component Platform Version Edition
Application Servers Runtimes for Java Technology Java SDK
 
 


Document Information


Product categories: Software > Application Servers > Distributed Application & Web Servers > WebSphere Application Server > Security
Operating system(s): Windows
Software version: 5.0
Software edition:
Reference #: 1109075
IBM Group: Software Group
Modified date: May 1, 2003