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package javax.management.remote;

import java.io.IOException;
import java.io.InvalidObjectException;
import java.io.ObjectInputStream;
import java.io.Serializable;
import javax.management.Notification;

A (Notification, Listener ID) pair.
This class is used to associate an emitted notification
   with the listener ID to which it is targeted.
Since:
1.5/**
 * <p>A (Notification, Listener ID) pair.</p>
 * <p>This class is used to associate an emitted notification
 *    with the listener ID to which it is targeted.</p>
 *
 * @since 1.5
 */
public class TargetedNotification implements Serializable {

    private static final long serialVersionUID = 7676132089779300926L;

// If we replace Integer with int...
//     /**
//      * <p>Constructs a <code>TargetedNotification</code> object.  The
//      * object contains a pair (Notification, Listener ID).
//      * The Listener ID identifies the client listener to which that
//      * notification is targeted. The client listener ID is one
//      * previously returned by the connector server in response to an
//      * <code>addNotificationListener</code> request.</p>
//      * @param notification Notification emitted from the MBean server.
//      * @param listenerID   The ID of the listener to which this
//      *        notification is targeted.
//      */
//     public TargetedNotification(Notification notification,
//                              int listenerID) {
//      this.notif = notification;
//      this.id = listenerID;
//     }

    
Constructs a TargetedNotification object.  The
object contains a pair (Notification, Listener ID).
The Listener ID identifies the client listener to which that
notification is targeted. The client listener ID is one
previously returned by the connector server in response to an
addNotificationListener request.
Params:
notification – Notification emitted from the MBean server.
listenerID –   The ID of the listener to which this
       notification is targeted.
Throws:
IllegalArgumentException – if the listenerID
       or notification is null./**
     * <p>Constructs a <code>TargetedNotification</code> object.  The
     * object contains a pair (Notification, Listener ID).
     * The Listener ID identifies the client listener to which that
     * notification is targeted. The client listener ID is one
     * previously returned by the connector server in response to an
     * <code>addNotificationListener</code> request.</p>
     * @param notification Notification emitted from the MBean server.
     * @param listenerID   The ID of the listener to which this
     *        notification is targeted.
     * @exception IllegalArgumentException if the <var>listenerID</var>
     *        or <var>notification</var> is null.
     */
    public TargetedNotification(Notification notification,
                                Integer listenerID) {
        validate(notification, listenerID);
        // If we replace integer with int...
        // this(notification,intValue(listenerID));
        this.notif = notification;
        this.id = listenerID;
    }

    
The emitted notification.
Returns:
The notification./**
     * <p>The emitted notification.</p>
     *
     * @return The notification.
     */
    public Notification getNotification() {
        return notif;
    }

    
The ID of the listener to which the notification is
   targeted.
Returns:
The listener ID./**
     * <p>The ID of the listener to which the notification is
     *    targeted.</p>
     *
     * @return The listener ID.
     */
    public Integer getListenerID() {
        return id;
    }

    
Returns a textual representation of this Targeted Notification.
Returns:
a String representation of this Targeted Notification./**
     * Returns a textual representation of this Targeted Notification.
     *
     * @return a String representation of this Targeted Notification.
     **/
    public String toString() {
        return "{" + notif + ", " + id + "}";
    }

    
See Also:
getNotification()
@serial
A notification to transmit to the other side./**
     * @serial A notification to transmit to the other side.
     * @see #getNotification()
     **/
    private Notification notif;
    
See Also:
getListenerID()
@serial
The ID of the listener to which the notification is
        targeted./**
     * @serial The ID of the listener to which the notification is
     *         targeted.
     * @see #getListenerID()
     **/
    private Integer id;
    //private final int id;

// Needed if we use int instead of Integer...
//     private static int intValue(Integer id) {
//      if (id == null) throw new
//          IllegalArgumentException("Invalid listener ID: null");
//      return id.intValue();
//     }

    private void readObject(ObjectInputStream ois) throws IOException, ClassNotFoundException {
        ois.defaultReadObject();
        try {
            validate(this.notif, this.id);
        } catch (IllegalArgumentException e) {
            throw new InvalidObjectException(e.getMessage());
        }
    }

    private static void validate(Notification notif, Integer id) throws IllegalArgumentException {
        if (notif == null) {
            throw new IllegalArgumentException("Invalid notification: null");
        }
        if (id == null) {
            throw new IllegalArgumentException("Invalid listener ID: null");
        }
    }
}