001    /* NamingEvent.java --
002       Copyright (C) 2001, 2004, 2006  Free Software Foundation, Inc.
003    
004    This file is part of GNU Classpath.
005    
006    GNU Classpath is free software; you can redistribute it and/or modify
007    it under the terms of the GNU General Public License as published by
008    the Free Software Foundation; either version 2, or (at your option)
009    any later version.
010    
011    GNU Classpath is distributed in the hope that it will be useful, but
012    WITHOUT ANY WARRANTY; without even the implied warranty of
013    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014    General Public License for more details.
015    
016    You should have received a copy of the GNU General Public License
017    along with GNU Classpath; see the file COPYING.  If not, write to the
018    Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
019    02110-1301 USA.
020    
021    Linking this library statically or dynamically with other modules is
022    making a combined work based on this library.  Thus, the terms and
023    conditions of the GNU General Public License cover the whole
024    combination.
025    
026    As a special exception, the copyright holders of this library give you
027    permission to link this library with independent modules to produce an
028    executable, regardless of the license terms of these independent
029    modules, and to copy and distribute the resulting executable under
030    terms of your choice, provided that you also meet, for each linked
031    independent module, the terms and conditions of the license of that
032    module.  An independent module is a module which is not derived from
033    or based on this library.  If you modify this library, you may extend
034    this exception to your version of the library, but you are not
035    obligated to do so.  If you do not wish to do so, delete this
036    exception statement from your version. */
037    
038    
039    package javax.naming.event;
040    
041    import java.util.EventObject;
042    
043    import javax.naming.Binding;
044    
045    /**
046     * @author Warren Levy (warrenl@redhat.com)
047     * @date June 5, 2001
048     */
049    public 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    }