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
019/**
020 * Interface supplying the information necessary to describe an introduction.
021 *
022 * <p>{@link IntroductionAdvisor IntroductionAdvisors} must implement this
023 * interface. If an {@link org.aopalliance.aop.Advice} implements this,
024 * it may be used as an introduction without an {@link IntroductionAdvisor}.
025 * In this case, the advice is self-describing, providing not only the
026 * necessary behavior, but describing the interfaces it introduces.
027 *
028 * @author Rod Johnson
029 * @since 1.1.1
030 */
031public interface IntroductionInfo {
032
033        /**
034         * Return the additional interfaces introduced by this Advisor or Advice.
035         * @return the introduced interfaces
036         */
037        Class<?>[] getInterfaces();
038
039}