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package com.sun.enterprise.admin.jmx.remote.notification;
import javax.management.*;
/**
* This class is a composite of a NotificationListener, NotificationFilter and a handback object.
* The listener, filter and handback objects that are being registered by the client
* via a call to addNotificationListener are set into a new ListenerInfo object.
* This ListenerInfo object is then registered in the NotificationManagers.
*/
public class ListenerInfo {
public Object proxy = null;
public NotificationListener listener = null;
public NotificationFilter filter = null;
public Object handback = null;
public String id = null;
public ListenerInfo() {
}
public ListenerInfo(NotificationListener listener, NotificationFilter filter, Object handback) {
this.listener = listener;
this.filter = filter;
this.handback = handback;
id = computeId();
}
/**
* Compute an id for this object.
* The id generated by this method is used to match a listener, filter, handback combination
* both on the server-side and client-side
*/
public String computeId() {
String listenerCode = "null";
if (listener != null)
listenerCode = Integer.toString(listener.hashCode());
String filterCode = "null";
if (filter != null)
filterCode = Integer.toString(filter.hashCode());
String handbackCode = "null";
if (handback != null)
handbackCode = Integer.toString(handback.hashCode());
return ( listenerCode + ":" + filterCode + ":" + handbackCode );
}
}
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