/*
 * Copyright 2002-2012 the original author or authors.
 *
 * 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
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package org.springframework.aop.aspectj;

import org.aopalliance.aop.Advice;

import org.springframework.aop.Advisor;
import org.springframework.aop.AfterAdvice;
import org.springframework.aop.BeforeAdvice;
import org.springframework.lang.Nullable;

Utility methods for dealing with AspectJ advisors.
Author:Adrian Colyer, Juergen Hoeller
Since:2.0
/** * Utility methods for dealing with AspectJ advisors. * * @author Adrian Colyer * @author Juergen Hoeller * @since 2.0 */
public abstract class AspectJAopUtils {
Return true if the advisor is a form of before advice.
/** * Return {@code true} if the advisor is a form of before advice. */
public static boolean isBeforeAdvice(Advisor anAdvisor) { AspectJPrecedenceInformation precedenceInfo = getAspectJPrecedenceInformationFor(anAdvisor); if (precedenceInfo != null) { return precedenceInfo.isBeforeAdvice(); } return (anAdvisor.getAdvice() instanceof BeforeAdvice); }
Return true if the advisor is a form of after advice.
/** * Return {@code true} if the advisor is a form of after advice. */
public static boolean isAfterAdvice(Advisor anAdvisor) { AspectJPrecedenceInformation precedenceInfo = getAspectJPrecedenceInformationFor(anAdvisor); if (precedenceInfo != null) { return precedenceInfo.isAfterAdvice(); } return (anAdvisor.getAdvice() instanceof AfterAdvice); }
Return the AspectJPrecedenceInformation provided by this advisor or its advice. If neither the advisor nor the advice have precedence information, this method will return null.
/** * Return the AspectJPrecedenceInformation provided by this advisor or its advice. * If neither the advisor nor the advice have precedence information, this method * will return {@code null}. */
@Nullable public static AspectJPrecedenceInformation getAspectJPrecedenceInformationFor(Advisor anAdvisor) { if (anAdvisor instanceof AspectJPrecedenceInformation) { return (AspectJPrecedenceInformation) anAdvisor; } Advice advice = anAdvisor.getAdvice(); if (advice instanceof AspectJPrecedenceInformation) { return (AspectJPrecedenceInformation) advice; } return null; } }