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 * <p/>
032 * <p>
033 * <b>Dependencies</b>:
034 * <ul>
035 * <li>AOP Alliance API version 1.0 or greater</li>
036 * </ul>
037 * </p>
038 *
039 * @author James Carman
040 * @since 1.0
041 */
042 public class MethodInterceptorAdapter implements Interceptor
043 {
044 //**********************************************************************************************************************
045 // Fields
046 //**********************************************************************************************************************
047
048 private final MethodInterceptor methodInterceptor;
049
050 //**********************************************************************************************************************
051 // Constructors
052 //**********************************************************************************************************************
053
054 public MethodInterceptorAdapter( MethodInterceptor methodInterceptor )
055 {
056 this.methodInterceptor = methodInterceptor;
057 }
058
059 //**********************************************************************************************************************
060 // Interceptor Implementation
061 //**********************************************************************************************************************
062
063
064 public Object intercept( Invocation invocation ) throws Throwable
065 {
066 return methodInterceptor.invoke(new MethodInvocationAdapter(invocation));
067 }
068
069 //**********************************************************************************************************************
070 // Inner Classes
071 //**********************************************************************************************************************
072
073 private static class MethodInvocationAdapter implements MethodInvocation
074 {
075 private final Invocation invocation;
076
077 public MethodInvocationAdapter( Invocation invocation )
078 {
079 this.invocation = invocation;
080 }
081
082 public Method getMethod()
083 {
084 return invocation.getMethod();
085 }
086
087 public Object[] getArguments()
088 {
089 return invocation.getArguments();
090 }
091
092 public Object proceed() throws Throwable
093 {
094 return invocation.proceed();
095 }
096
097 public Object getThis()
098 {
099 return invocation.getProxy();
100 }
101
102 public AccessibleObject getStaticPart()
103 {
104 return invocation.getMethod();
105 }
106 }
107 }