You can delete a module from an existing application through the administrative console, the wsadmin tool, or programming. Use this example to delete a module through programming.
This task assumes a basic familiarity with MBean programming. For information on MBean programming, see MBean Java™ application programming interface (API) documentation. In this information center, click .
Before you can delete a module from an application on WebSphere® Application Server, you must install the application.
Perform the following tasks to delete a module through programming.
After you successfully run the code, the existing module is deleted from the application.
The following example shows how to delete a module from an application based on the previous steps. Some statements are split on multiple lines for printing purposes.
//moduleURI specifies a URI that gives the target location of the module.
//appName specifies the name of the application to update.
String moduleURI = "Increment.jar";
String appName = "MyApp";
//Get the administrative client to connect to
//WebSphere Application Server.
AdminClient client = ...;
//Create the application management proxy.
AppManagement proxy = AppManagementProxy.getJMXProxyForClient (client);
//Create the notification filter.
NotificationFilterSupport myFilter = new NotificationFilterSupport();
myFilter.enableType (NotificationConstants.TYPE_APPMANAGEMENT);
//Add the listener.
NotificationListener listener = new AListener(_soapClient, myFilter,
"Install: " + appName, AppNotification.UPDATE);
//Update the existing application, MyApp, by deleting the module.
Hashtable options = new Hashtable();
options.put (AppConstants.APPDEPL_LOCALE, Locale.getDefault());
options.put (AppConstants.APPUPDATE_CONTENTTYPE, AppConstants.APPUPDATE_CONTENT_MODULEFILE);
proxy.updateApplication ( appName,
moduleURI,
null,
AppConstants.APPUPDATE_DELETE,
options,
null);
// Wait; the installation application programming interface (API) is
// asynchronous and so returns immediately.
// If the program does not wait here, the program ends.
Thread.sleep(300000); // Wait so that the program does not end.
}
catch (Exception e) {
e.printStackTrace();
}
}
}
// Specify the Java Management Extensions (JMX) notification listener for JMX events.
class AListener implements NotificationListener
{
AdminClient _soapClient;
NotificationFilterSupport myFilter;
Object handback;
ObjectName on;
String eventTypeToCheck;
public AListener(AdminClient cl, NotificationFilterSupport fl,
Object h, String eType) throws Exception
{
_soapClient = cl;
myFilter = fl;
handback = h;
eventTypeToCheck = eType;
Iterator iter = _soapClient.queryNames (new ObjectName(
"WebSphere:type=AppManagement,*"), null).iterator();
on = (ObjectName)iter.next();
System.out.println ("ObjectName: " + on);
_soapClient.addNotificationListener (on, this, myFilter, handback);
}
public void handleNotification (Notification notf, Object handback)
{
AppNotification ev = (AppNotification) notf.getUserData();
System.out.println ("!! JMX event Recd: (handback obj= " + handback+ "): " + ev);
//When the installation is done, remove the listener and quit
if (ev.taskName.equals (eventTypeToCheck) &&
(ev.taskStatus.equals (AppNotification.STATUS_COMPLETED) ||
ev.taskStatus.equals (AppNotification.STATUS_FAILED)))
{
try
{
_soapClient.removeNotificationListener (on, this);
}
catch (Throwable th)
{
System.out.println ("Error removing listener: " + th);
}
System.exit (0);
}
}
}
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