001/*
002 * Copyright 2002-2012 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;
018
019import java.lang.reflect.Method;
020
021/**
022 * Advice invoked before a method is invoked. Such advices cannot
023 * prevent the method call proceeding, unless they throw a Throwable.
024 *
025 * @see AfterReturningAdvice
026 * @see ThrowsAdvice
027 *
028 * @author Rod Johnson
029 */
030public interface MethodBeforeAdvice extends BeforeAdvice {
031
032        /**
033         * Callback before a given method is invoked.
034         * @param method method being invoked
035         * @param args arguments to the method
036         * @param target target of the method invocation. May be {@code null}.
037         * @throws Throwable if this object wishes to abort the call.
038         * Any exception thrown will be returned to the caller if it's
039         * allowed by the method signature. Otherwise the exception
040         * will be wrapped as a runtime exception.
041         */
042        void before(Method method, Object[] args, Object target) throws Throwable;
043
044}