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From leosu...@apache.org
Subject cvs commit: jakarta-avalon-excalibur/util/src/java/org/apache/excalibur/util MultiDelegateProxy.java
Date Thu, 03 Oct 2002 17:50:32 GMT
leosutic    2002/10/03 10:50:32

  Added:       util/src/java/org/apache/excalibur/util
                        MultiDelegateProxy.java
  Log:
  Initial checkin.
  
  Revision  Changes    Path
  1.1                  jakarta-avalon-excalibur/util/src/java/org/apache/excalibur/util/MultiDelegateProxy.java
  
  Index: MultiDelegateProxy.java
  ===================================================================
  /*
  
  ============================================================================
  The Apache Software License, Version 1.1
  ============================================================================
  
  Copyright (C) @year@ The Apache Software Foundation. All rights reserved.
  
  Redistribution and use in source and binary forms, with or without modifica-
  tion, are permitted provided that the following conditions are met:
  
  1. Redistributions of  source code must  retain the above copyright  notice,
  this list of conditions and the following disclaimer.
  
  2. Redistributions in binary form must reproduce the above copyright notice,
  this list of conditions and the following disclaimer in the documentation
  and/or other materials provided with the distribution.
  
  3. The end-user documentation included with the redistribution, if any, must
  include  the following  acknowledgment:  "This product includes  software
  developed  by the  Apache Software Foundation  (http://www.apache.org/)."
  Alternately, this  acknowledgment may  appear in the software itself,  if
  and wherever such third-party acknowledgments normally appear.
  
  4. The names "Jakarta", "Avalon", "Excalibur" and "Apache Software Foundation"
  must not be used to endorse or promote products derived from this  software
  without  prior written permission. For written permission, please contact
  apache@apache.org.
  
  5. Products  derived from this software may not  be called "Apache", nor may
  "Apache" appear  in their name,  without prior written permission  of the
  Apache Software Foundation.
  
  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
  FITNESS  FOR A PARTICULAR  PURPOSE ARE  DISCLAIMED.  IN NO  EVENT SHALL  THE
  APACHE SOFTWARE  FOUNDATION  OR ITS CONTRIBUTORS  BE LIABLE FOR  ANY DIRECT,
  INDIRECT, INCIDENTAL, SPECIAL,  EXEMPLARY, OR CONSEQUENTIAL  DAMAGES (INCLU-
  DING, BUT NOT LIMITED TO, PROCUREMENT  OF SUBSTITUTE GOODS OR SERVICES; LOSS
  OF USE, DATA, OR  PROFITS; OR BUSINESS  INTERRUPTION)  HOWEVER CAUSED AND ON
  ANY  THEORY OF LIABILITY,  WHETHER  IN CONTRACT,  STRICT LIABILITY,  OR TORT
  (INCLUDING  NEGLIGENCE OR  OTHERWISE) ARISING IN  ANY WAY OUT OF THE  USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  
  This software  consists of voluntary contributions made  by many individuals
  on  behalf of the Apache Software  Foundation. For more  information on the
  Apache Software Foundation, please see <http://www.apache.org/>.
  
  */
  package org.apache.excalibur.util;
  
  /**
   * Protective proxy around MultiDelegates.
   * 
   * When exposing MultiDelegates, the clients should not be able to do anything besides
   * adding or removing their delegates. However, <b>the instance returned from 
   * MultiDelegateFactory can be cast to the delegate interface and invoked
   * by the client!</b> This class provides a wrapper around MultiDelegates
   * that you can safely expose to clients.
   */
  public class MultiDelegateProxy implements MultiDelegate
  {
      private final MultiDelegate multiDelegate;
      
      public MultiDelegateWrapper( MultiDelegate multiDelegate )
      {
          this.multiDelegate = multiDelegate;
      }
      
      public void add( Object o )
      {
          multiDelegate.add( o );
      }
      
      public void remove( Object o )
      {
          multiDelegate.remove( o );
      }
  }
  
  
  

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