001/*
002 * Copyright 2002-2017 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      https://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.springframework.aop.aspectj;
018
019import java.io.Serializable;
020import java.lang.reflect.Method;
021
022import org.aopalliance.intercept.MethodInterceptor;
023import org.aopalliance.intercept.MethodInvocation;
024import org.aspectj.lang.ProceedingJoinPoint;
025import org.aspectj.weaver.tools.JoinPointMatch;
026
027import org.springframework.aop.ProxyMethodInvocation;
028
029/**
030 * Spring AOP around advice (MethodInterceptor) that wraps
031 * an AspectJ advice method. Exposes ProceedingJoinPoint.
032 *
033 * @author Rod Johnson
034 * @author Juergen Hoeller
035 * @since 2.0
036 */
037@SuppressWarnings("serial")
038public class AspectJAroundAdvice extends AbstractAspectJAdvice implements MethodInterceptor, Serializable {
039
040        public AspectJAroundAdvice(
041                        Method aspectJAroundAdviceMethod, AspectJExpressionPointcut pointcut, AspectInstanceFactory aif) {
042
043                super(aspectJAroundAdviceMethod, pointcut, aif);
044        }
045
046
047        @Override
048        public boolean isBeforeAdvice() {
049                return false;
050        }
051
052        @Override
053        public boolean isAfterAdvice() {
054                return false;
055        }
056
057        @Override
058        protected boolean supportsProceedingJoinPoint() {
059                return true;
060        }
061
062        @Override
063        public Object invoke(MethodInvocation mi) throws Throwable {
064                if (!(mi instanceof ProxyMethodInvocation)) {
065                        throw new IllegalStateException("MethodInvocation is not a Spring ProxyMethodInvocation: " + mi);
066                }
067                ProxyMethodInvocation pmi = (ProxyMethodInvocation) mi;
068                ProceedingJoinPoint pjp = lazyGetProceedingJoinPoint(pmi);
069                JoinPointMatch jpm = getJoinPointMatch(pmi);
070                return invokeAdviceMethod(pjp, jpm, null, null);
071        }
072
073        /**
074         * Return the ProceedingJoinPoint for the current invocation,
075         * instantiating it lazily if it hasn't been bound to the thread already.
076         * @param rmi the current Spring AOP ReflectiveMethodInvocation,
077         * which we'll use for attribute binding
078         * @return the ProceedingJoinPoint to make available to advice methods
079         */
080        protected ProceedingJoinPoint lazyGetProceedingJoinPoint(ProxyMethodInvocation rmi) {
081                return new MethodInvocationProceedingJoinPoint(rmi);
082        }
083
084}