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 }