| /* |
| * Copyright (c) 1999, 2003, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package javax.management; |
| |
| |
| |
| /** |
| * Provides definitions of the attribute change notifications sent by MBeans. |
| * <P> |
| * It's up to the MBean owning the attribute of interest to create and send |
| * attribute change notifications when the attribute change occurs. |
| * So the <CODE>NotificationBroadcaster</CODE> interface has to be implemented |
| * by any MBean for which an attribute change is of interest. |
| * <P> |
| * Example: |
| * If an MBean called <CODE>myMbean</CODE> needs to notify registered listeners |
| * when its attribute: |
| * <BLOCKQUOTE><CODE> |
| * String myString |
| * </CODE></BLOCKQUOTE> |
| * is modified, <CODE>myMbean</CODE> creates and emits the following notification: |
| * <BLOCKQUOTE><CODE> |
| * new AttributeChangeNotification(myMbean, sequenceNumber, timeStamp, msg, |
| * "myString", "String", oldValue, newValue); |
| * </CODE></BLOCKQUOTE> |
| * |
| * @since 1.5 |
| */ |
| public class AttributeChangeNotification extends javax.management.Notification { |
| |
| /* Serial version */ |
| private static final long serialVersionUID = 535176054565814134L; |
| |
| /** |
| * Notification type which indicates that the observed MBean attribute value has changed. |
| * <BR>The value of this type string is <CODE>jmx.attribute.change</CODE>. |
| */ |
| public static final String ATTRIBUTE_CHANGE = "jmx.attribute.change"; |
| |
| |
| /** |
| * @serial The MBean attribute name. |
| */ |
| private String attributeName = null; |
| |
| /** |
| * @serial The MBean attribute type. |
| */ |
| private String attributeType = null; |
| |
| /** |
| * @serial The MBean attribute old value. |
| */ |
| private Object oldValue = null; |
| |
| /** |
| * @serial The MBean attribute new value. |
| */ |
| private Object newValue = null; |
| |
| |
| /** |
| * Constructs an attribute change notification object. |
| * In addition to the information common to all notification, the caller must supply the name and type |
| * of the attribute, as well as its old and new values. |
| * |
| * @param source The notification producer, that is, the MBean the attribute belongs to. |
| * @param sequenceNumber The notification sequence number within the source object. |
| * @param timeStamp The date at which the notification is being sent. |
| * @param msg A String containing the message of the notification. |
| * @param attributeName A String giving the name of the attribute. |
| * @param attributeType A String containing the type of the attribute. |
| * @param oldValue An object representing value of the attribute before the change. |
| * @param newValue An object representing value of the attribute after the change. |
| */ |
| public AttributeChangeNotification(Object source, long sequenceNumber, long timeStamp, String msg, |
| String attributeName, String attributeType, Object oldValue, Object newValue) { |
| |
| super(AttributeChangeNotification.ATTRIBUTE_CHANGE, source, sequenceNumber, timeStamp, msg); |
| this.attributeName = attributeName; |
| this.attributeType = attributeType; |
| this.oldValue = oldValue; |
| this.newValue = newValue; |
| } |
| |
| |
| /** |
| * Gets the name of the attribute which has changed. |
| * |
| * @return A String containing the name of the attribute. |
| */ |
| public String getAttributeName() { |
| return attributeName; |
| } |
| |
| /** |
| * Gets the type of the attribute which has changed. |
| * |
| * @return A String containing the type of the attribute. |
| */ |
| public String getAttributeType() { |
| return attributeType; |
| } |
| |
| /** |
| * Gets the old value of the attribute which has changed. |
| * |
| * @return An Object containing the old value of the attribute. |
| */ |
| public Object getOldValue() { |
| return oldValue; |
| } |
| |
| /** |
| * Gets the new value of the attribute which has changed. |
| * |
| * @return An Object containing the new value of the attribute. |
| */ |
| public Object getNewValue() { |
| return newValue; |
| } |
| |
| } |