libjava/javax/naming/event/NamingEvent.java

   1 /* NamingEvent.java --
   2    Copyright (C) 2001, 2004  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., 59 Temple Place, Suite 330, Boston, MA
  19 02111-1307 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.naming.event;
  40
  41 import java.util.EventObject;
  42
  43 import javax.naming.Binding;
  44
  45 /**
  46  * @author Warren Levy (warrenl@redhat.com)
  47  * @date June 5, 2001
  48  */
  49 public class NamingEvent extends EventObject
  50 {
  51   public static final int OBJECT_ADDED = 0;
  52   public static final int OBJECT_REMOVED = 1;
  53   public static final int OBJECT_RENAMED = 2;
  54   public static final int OBJECT_CHANGED = 3;
  55
  56   // Serialized fields.
  57   protected Object changeInfo;
  58   protected int type;
  59   protected Binding oldBinding;
  60   protected Binding newBinding;
  61
  62   public NamingEvent(EventContext source, int type, Binding newBd,
  63                      Binding oldBd, Object changeInfo)
  64   {
  65     super(source);
  66     this.type = type;
  67     this.oldBinding = oldBd;
  68     this.newBinding = newBd;
  69     this.changeInfo = changeInfo;
  70     // FIXME: for OBJECT_ADDED, newBd must not be null;
  71     // FIXME: for OBJECT_CHANGED, newBd and oldBd must not be null;
  72     // FIXME: for OBJECT_RENAMED, one of newBd or oldBd may be null if newBd or
  73     // FIXME: oldBd is outside of the scope for which listener has registered.
  74     // FIXME: namingExceptionThrown() is called for the listener in question.
  75   }
  76
  77   public int getType()
  78   {
  79     return type;
  80   }
  81
  82   public EventContext getEventContext()
  83   {
  84     return (EventContext) getSource();
  85   }
  86
  87   public Binding getOldBinding()
  88   {
  89     return oldBinding;
  90   }
  91
  92   public Binding getNewBinding()
  93   {
  94     return newBinding;
  95   }
  96
  97   public Object getChangeInfo()
  98   {
  99     return changeInfo;
 100   }
 101
 102   public void dispatch(NamingListener listener)
 103   {
 104     switch (type)
 105       {
 106         case OBJECT_ADDED:
 107           ((NamespaceChangeListener) listener).objectAdded(this);
 108           break;
 109         case OBJECT_REMOVED:
 110           ((NamespaceChangeListener) listener).objectRemoved(this);
 111           break;
 112         case OBJECT_RENAMED:
 113           ((NamespaceChangeListener) listener).objectRenamed(this);
 114           break;
 115         case OBJECT_CHANGED:
 116           ((ObjectChangeListener) listener).objectChanged(this);
 117           break;
 118       }
 119   }
 120 }