001/* NamingEvent.java --
002   Copyright (C) 2001, 2004, 2006  Free Software Foundation, Inc.
003
004This file is part of GNU Classpath.
005
006GNU Classpath is free software; you can redistribute it and/or modify
007it under the terms of the GNU General Public License as published by
008the Free Software Foundation; either version 2, or (at your option)
009any later version.
010
011GNU Classpath is distributed in the hope that it will be useful, but
012WITHOUT ANY WARRANTY; without even the implied warranty of
013MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014General Public License for more details.
015
016You should have received a copy of the GNU General Public License
017along with GNU Classpath; see the file COPYING.  If not, write to the
018Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
01902110-1301 USA.
020
021Linking this library statically or dynamically with other modules is
022making a combined work based on this library.  Thus, the terms and
023conditions of the GNU General Public License cover the whole
024combination.
025
026As a special exception, the copyright holders of this library give you
027permission to link this library with independent modules to produce an
028executable, regardless of the license terms of these independent
029modules, and to copy and distribute the resulting executable under
030terms of your choice, provided that you also meet, for each linked
031independent module, the terms and conditions of the license of that
032module.  An independent module is a module which is not derived from
033or based on this library.  If you modify this library, you may extend
034this exception to your version of the library, but you are not
035obligated to do so.  If you do not wish to do so, delete this
036exception statement from your version. */
037
038
039package javax.naming.event;
040
041import java.util.EventObject;
042
043import javax.naming.Binding;
044 
045/**
046 * @author Warren Levy (warrenl@redhat.com)
047 * @date June 5, 2001
048 */
049public class NamingEvent extends EventObject
050{
051  private static final long serialVersionUID = - 7126752885365133499L;
052
053  public static final int OBJECT_ADDED = 0;
054  public static final int OBJECT_REMOVED = 1;
055  public static final int OBJECT_RENAMED = 2;
056  public static final int OBJECT_CHANGED = 3;
057
058  // Serialized fields.
059  protected Object changeInfo;
060  protected int type;
061  protected Binding oldBinding;
062  protected Binding newBinding;
063
064  public NamingEvent(EventContext source, int type, Binding newBd,
065                     Binding oldBd, Object changeInfo)
066  {
067    super(source);
068    this.type = type;
069    this.oldBinding = oldBd;
070    this.newBinding = newBd;
071    this.changeInfo = changeInfo;
072    // FIXME: for OBJECT_ADDED, newBd must not be null;
073    // FIXME: for OBJECT_CHANGED, newBd and oldBd must not be null;
074    // FIXME: for OBJECT_RENAMED, one of newBd or oldBd may be null if newBd or
075    // FIXME: oldBd is outside of the scope for which listener has registered.
076    // FIXME: namingExceptionThrown() is called for the listener in question.
077  }
078
079  public int getType()
080  {
081    return type;
082  }
083
084  public EventContext getEventContext()
085  {
086    return (EventContext) getSource();
087  }
088
089  public Binding getOldBinding()
090  {
091    return oldBinding;
092  }
093
094  public Binding getNewBinding()
095  {
096    return newBinding;
097  }
098
099  public Object getChangeInfo()
100  {
101    return changeInfo;
102  }
103
104  public void dispatch(NamingListener listener)
105  {
106    switch (type)
107      {
108        case OBJECT_ADDED:
109          ((NamespaceChangeListener) listener).objectAdded(this);
110          break;
111        case OBJECT_REMOVED:
112          ((NamespaceChangeListener) listener).objectRemoved(this);
113          break;
114        case OBJECT_RENAMED:
115          ((NamespaceChangeListener) listener).objectRenamed(this);
116          break;
117        case OBJECT_CHANGED:
118          ((ObjectChangeListener) listener).objectChanged(this);
119          break;
120      }
121  }
122}