| /* |
| * Copyright 2003,2004 The Apache Software Foundation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.mockito.cglib.proxy; |
| |
| import java.io.Serializable; |
| import java.lang.reflect.Method; |
| import java.util.List; |
| |
| import org.mockito.cglib.core.CodeGenerationException; |
| |
| /** |
| * This class is meant to be used as replacement for |
| * <code>java.lang.reflect.Proxy</code> under JDK 1.2. There are some known |
| * subtle differences: |
| * <ul> |
| * <li>The exceptions returned by invoking <code>getExceptionTypes</code> |
| * on the <code>Method</code> passed to the <code>invoke</code> method |
| * <b>are</b> the exact set that can be thrown without resulting in an |
| * <code>UndeclaredThrowableException</code> being thrown. |
| * <li>{@link UndeclaredThrowableException} is used instead |
| * of <code>java.lang.reflect.UndeclaredThrowableException</code>. |
| * </ul> |
| * <p> |
| * @version $Id: Proxy.java,v 1.6 2004/06/24 21:15:19 herbyderby Exp $ |
| */ |
| public class Proxy implements Serializable { |
| protected InvocationHandler h; |
| |
| private static final CallbackFilter BAD_OBJECT_METHOD_FILTER = new CallbackFilter() { |
| public int accept(Method method, List<Method> allMethods) { |
| if (method.getDeclaringClass().getName().equals("java.lang.Object")) { |
| String name = method.getName(); |
| if (!(name.equals("hashCode") || |
| name.equals("equals") || |
| name.equals("toString"))) { |
| return 1; |
| } |
| } |
| return 0; |
| } |
| }; |
| |
| protected Proxy(InvocationHandler h) { |
| Enhancer.registerCallbacks(getClass(), new Callback[]{ h, null }); |
| this.h = h; |
| } |
| |
| // private for security of isProxyClass |
| private static class ProxyImpl extends Proxy { |
| protected ProxyImpl(InvocationHandler h) { |
| super(h); |
| } |
| } |
| |
| public static InvocationHandler getInvocationHandler(Object proxy) { |
| if (!(proxy instanceof ProxyImpl)) { |
| throw new IllegalArgumentException("Object is not a proxy"); |
| } |
| return ((Proxy)proxy).h; |
| } |
| |
| public static Class getProxyClass(ClassLoader loader, Class[] interfaces) { |
| Enhancer e = new Enhancer(); |
| e.setSuperclass(ProxyImpl.class); |
| e.setInterfaces(interfaces); |
| e.setCallbackTypes(new Class[]{ |
| InvocationHandler.class, |
| NoOp.class, |
| }); |
| e.setCallbackFilter(BAD_OBJECT_METHOD_FILTER); |
| e.setUseFactory(false); |
| return e.createClass(); |
| } |
| |
| public static boolean isProxyClass(Class cl) { |
| return cl.getSuperclass().equals(ProxyImpl.class); |
| } |
| |
| public static Object newProxyInstance(ClassLoader loader, Class[] interfaces, InvocationHandler h) { |
| try { |
| Class clazz = getProxyClass(loader, interfaces); |
| return clazz.getConstructor(new Class[]{ InvocationHandler.class }).newInstance(new Object[]{ h }); |
| } catch (RuntimeException e) { |
| throw e; |
| } catch (Exception e) { |
| throw new CodeGenerationException(e); |
| } |
| } |
| } |