morgand 02/03/14 21:36:58
Added: collections/src/java/org/apache/commons/collections
ProxyMap.java
Log:
added for collections 2.0
Revision Changes Path
1.1
jakarta-commons/collections/src/java/org/apache/commons/collections/ProxyMap.java
Index: ProxyMap.java
===================================================================
/*
* $Header:
/home/cvs/jakarta-commons/collections/src/java/org/apache/commons/collections/ProxyMap.java,v
1.1 2002/03/15 05:36:58 morgand Exp $
* $Revision: 1.1 $
* $Date: 2002/03/15 05:36:58 $
*
* ====================================================================
*
* The Apache Software License, Version 1.1
*
* Copyright (c) 1999-2002 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, 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 acknowlegement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The Jakarta Project", "Commons", 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 [EMAIL PROTECTED]
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Group.
*
* 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 (INCLUDING, 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.commons.collections;
import java.util.Collection;
import java.util.Map;
import java.util.Set;
/**
* <p>delegate - a person authorized to act as representative for
* another</p>
*
* <p>This <code>Map</code> wraps another <code>Map</code>
* implementation, using the wrapped instance for its default
* implementation. This class is used as a framework on which to
* build to extensions for its wrapped <code>Map</code> object which
* would be unavailable or inconvenient via sub-classing (but usable
* via composition).</p>
*
* <p>An example use case is where the wrapped <code>Map</code> needs
* synchronization (to make it thread-safe), but the <code>Map</code>
* returned by <code>Collections.synchronizedMap(map)</code>
* hides part of <code>map</code>'s public interface.</p>
*
* @author <a href="mailto:[EMAIL PROTECTED]";>Daniel Rall</a>
* @since 2.0
*/
public abstract class ProxyMap implements Map {
/**
* The <code>Map</code> used for default implementations.
*/
protected Map map;
/**
* Creates a new instance acting as a representative for the
* specified <code>Map</code>.
*
* @param map The <code>Map</code> to whose operations to wrap.
*/
public ProxyMap(Map map) {
this.map = map;
}
public void clear() {
map.clear();
}
public boolean containsKey(Object key) {
return map.containsKey(key);
}
public boolean containsValue(Object value) {
return map.containsValue(value);
}
public Set entrySet() {
return map.entrySet();
}
public boolean equals(Object map) {
return map.equals(map);
}
public Object get(Object key) {
return map.get(key);
}
public int hashCode() {
return map.hashCode();
}
public boolean isEmpty() {
return map.isEmpty();
}
public Set keySet() {
return map.keySet();
}
public Object put(Object key, Object value) {
return map.put(key, value);
}
public void putAll(Map t) {
map.putAll(t);
}
public Object remove(Object key) {
return map.remove(key);
}
public int size() {
return map.size();
}
public Collection values() {
return map.values();
}
}
--
To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]>
For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
