001 /*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017
018 package org.apache.commons.proxy.interceptor;
019
020 import org.aopalliance.intercept.MethodInterceptor;
021 import org.aopalliance.intercept.MethodInvocation;
022 import org.apache.commons.proxy.Interceptor;
023 import org.apache.commons.proxy.Invocation;
024
025 import java.lang.reflect.AccessibleObject;
026 import java.lang.reflect.Method;
027
028 /**
029 * An adapter class to adapt AOP Alliance's {@link MethodInterceptor} interface to Commons Proxy's
030 * {@link Interceptor} interface.
031 *
032 * <p>
033 * <b>Dependencies</b>:
034 * <ul>
035 * <li>AOP Alliance API version 1.0 or greater</li>
036 * </ul>
037 * </p>
038 * @author James Carman
039 * @since 1.0
040 */
041 public class MethodInterceptorAdapter implements Interceptor
042 {
043 private final MethodInterceptor methodInterceptor;
044
045 public MethodInterceptorAdapter( MethodInterceptor methodInterceptor )
046 {
047 this.methodInterceptor = methodInterceptor;
048 }
049
050 public Object intercept( Invocation invocation ) throws Throwable
051 {
052 return methodInterceptor.invoke( new MethodInvocationAdapter( invocation ) );
053 }
054
055 private static class MethodInvocationAdapter implements MethodInvocation
056 {
057 private final Invocation invocation;
058
059 public MethodInvocationAdapter( Invocation invocation )
060 {
061 this.invocation = invocation;
062 }
063
064 public Method getMethod()
065 {
066 return invocation.getMethod();
067 }
068
069 public Object[] getArguments()
070 {
071 return invocation.getArguments();
072 }
073
074 public Object proceed() throws Throwable
075 {
076 return invocation.proceed();
077 }
078
079 public Object getThis()
080 {
081 return invocation.getProxy();
082 }
083
084 public AccessibleObject getStaticPart()
085 {
086 return invocation.getMethod();
087 }
088 }
089 }