- /*
- * @(#)AttributeChangeNotification.java 4.20 03/12/19
- *
- * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
- * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
- */
-
- 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;
- }
-
- }
-
-