Source for javax.management.AttributeChangeNotification

   1: /* AttributeChangeNotification.java -- Notification for attribute changes
   2:    Copyright (C) 2007 Free Software Foundation, Inc.
   3: 
   4: This file is part of GNU Classpath.
   5: 
   6: GNU Classpath is free software; you can redistribute it and/or modify
   7: it under the terms of the GNU General Public License as published by
   8: the Free Software Foundation; either version 2, or (at your option)
   9: any later version.
  10: 
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14: General Public License for more details.
  15: 
  16: You should have received a copy of the GNU General Public License
  17: along with GNU Classpath; see the file COPYING.  If not, write to the
  18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 USA.
  20: 
  21: Linking this library statically or dynamically with other modules is
  22: making a combined work based on this library.  Thus, the terms and
  23: conditions of the GNU General Public License cover the whole
  24: combination.
  25: 
  26: As a special exception, the copyright holders of this library give you
  27: permission to link this library with independent modules to produce an
  28: executable, regardless of the license terms of these independent
  29: modules, and to copy and distribute the resulting executable under
  30: terms of your choice, provided that you also meet, for each linked
  31: independent module, the terms and conditions of the license of that
  32: module.  An independent module is a module which is not derived from
  33: or based on this library.  If you modify this library, you may extend
  34: this exception to your version of the library, but you are not
  35: obligated to do so.  If you do not wish to do so, delete this
  36: exception statement from your version. */
  37: 
  38: 
  39: package javax.management;
  40: 
  41: /**
  42:  * Defines the notification used to let listeners know of
  43:  * an attribute change.  The bean itself is responsible
  44:  * for creating and transmitting the notification when the
  45:  * attribute changes, by implementing
  46:  * {@link NotificationBroadcaster}.  For example, if a
  47:  * bean increments the integer, <code>count</code>, it
  48:  * should send a notification with the
  49:  * <code>attributeName</code>, <code>"count"</code>,
  50:  * the <code>attributeType</code>, <code>"Integer"</code>
  51:  * and the old and new values of the attribute.
  52:  *
  53:  * @author Andrew John Hughes (gnu_andrew@member.fsf.org)
  54:  * @since 1.5
  55:  */
  56: public class AttributeChangeNotification
  57:   extends Notification
  58: {
  59: 
  60:   /**
  61:    * Compatible with JDK 1.5
  62:    */
  63:   private static final long serialVersionUID = 535176054565814134L;
  64: 
  65:   /**
  66:    * The attribute type for attribute change
  67:    * notifications.
  68:    */
  69:   public static final String ATTRIBUTE_CHANGE = "jmx.attribute.change";
  70:   
  71:   /**
  72:    * The name of the attribute that changed.
  73:    */
  74:   private String attributeName;
  75: 
  76:   /**
  77:    * The type of the attribute that changed.
  78:    */
  79:   private String attributeType;
  80: 
  81:   /**
  82:    * The old value of the attribute.
  83:    */
  84:   private Object oldValue;
  85: 
  86:   /**
  87:    * The new value of the attribute.
  88:    */
  89:   private Object newValue;
  90: 
  91:   /**
  92:    * Constructs a new {@link AttributeChangeNotification}
  93:    * with the specified source, sequence number, timestamp,
  94:    * message, and the attribute name, type, old value and
  95:    * new value.
  96:    *
  97:    * @param source the producer of the notification, which
  98:    *               is usually the bean that changed the
  99:    *               attribute.
 100:    * @param sequenceNumber the sequence number of the
 101:    *                       notification.
 102:    * @param timeStamp the date and time of the notification.
 103:    * @param msg the message content of the notification.
 104:    * @param name the name of the attribute.
 105:    * @param type the type of the attribute.
 106:    * @param oldVal the old value of the attribute.
 107:    * @param newVal the new value of the attribute.
 108:    */
 109:   public AttributeChangeNotification(Object source,
 110:                      long sequenceNumber,
 111:                      long timeStamp,
 112:                      String msg, String name,
 113:                      String type, Object oldVal,
 114:                      Object newVal)
 115:   {
 116:     super(ATTRIBUTE_CHANGE, source, sequenceNumber,
 117:       timeStamp, msg);
 118:     attributeName = name;
 119:     attributeType = type;
 120:     oldValue = oldVal;
 121:     newValue = newVal;
 122:   }
 123: 
 124:   /**
 125:    * Returns the name of the attribute that changed.
 126:    *
 127:    * @return the name of the attribute.
 128:    */
 129:   public String getAttributeName()
 130:   {
 131:     return attributeName;
 132:   }
 133: 
 134:   /**
 135:    * Returns the type of the attribute that changed.
 136:    *
 137:    * @return the type of the attribute.
 138:    */
 139:   public String getAttributeType()
 140:   {
 141:     return attributeType;
 142:   }
 143: 
 144:   /**
 145:    * Returns the old value of the attribute.
 146:    *
 147:    * @return the old value.
 148:    */
 149:   public Object getOldValue()
 150:   {
 151:     return oldValue;
 152:   }
 153: 
 154:   /**
 155:    * Returns the new value of the attribute.
 156:    *
 157:    * @return the new value.
 158:    */
 159:   public Object getNewValue()
 160:   {
 161:     return newValue;
 162:   }
 163: 
 164: }
 165: