| /* |
| * $Id$ |
| * |
| * Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved. |
| * |
| * Redistribution and use of this software and associated documentation |
| * ("Software"), with or without modification, are permitted provided that the |
| * following conditions are met: 1. Redistributions of source code must retain |
| * copyright statements and notices. Redistributions must also contain a copy |
| * of this document. 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 name "groovy" must not be used to endorse or promote products derived |
| * from this Software without prior written permission of The Codehaus. For |
| * written permission, please contact info@codehaus.org. 4. Products derived |
| * from this Software may not be called "groovy" nor may "groovy" appear in |
| * their names without prior written permission of The Codehaus. "groovy" is a |
| * registered trademark of The Codehaus. 5. Due credit should be given to The |
| * Codehaus - http://groovy.codehaus.org/ |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS ``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 CODEHAUS 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. |
| * |
| */ |
| package groovy.util; |
| |
| import java.util.Iterator; |
| |
| import groovy.lang.GroovyObjectSupport; |
| import groovy.lang.MissingMethodException; |
| import org.codehaus.groovy.runtime.InvokerHelper; |
| |
| /** |
| * Dynamic groovy proxy for another object. All method |
| * invocations get forwarded to actual object, unless the proxy overrides it. |
| * See groovy/util/ProxyTest.groovy for usage details. |
| * |
| * @author Troy Heninger |
| * @author Dierk Koenig |
| */ |
| public class Proxy extends GroovyObjectSupport { |
| |
| private Object adaptee = null; |
| |
| /** |
| * This method is for convenience. |
| * It allows to get around the need for defining dump ctors is subclasses. |
| * See unit tests for details. |
| */ |
| public Proxy wrap(Object adaptee){ |
| setAdaptee(adaptee); |
| return this; |
| } |
| |
| public Object getAdaptee() { |
| return adaptee; |
| } |
| |
| public void setAdaptee(Object adaptee) { |
| this.adaptee = adaptee; |
| } |
| |
| public Object invokeMethod(String name, Object args) { |
| try { |
| return super.invokeMethod(name, args); |
| } |
| catch (MissingMethodException e) { |
| return InvokerHelper.getMetaClass(adaptee).invokeMethod(adaptee, name, args); |
| } |
| } |
| |
| public Iterator iterator() { |
| return InvokerHelper.asIterator(adaptee); |
| } |
| |
| } |