1 /* 2 * Copyright 2002-2007 the original author or authors. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package org.springframework.aop; 18 19 /** 20 * Interface supplying the information necessary to describe an introduction. 21 * 22 * <p>{@link IntroductionAdvisor IntroductionAdvisors} must implement this 23 * interface. If an {@link org.aopalliance.aop.Advice} implements this, 24 * it may be used as an introduction without an {@link IntroductionAdvisor}. 25 * In this case, the advice is self-describing, providing not only the 26 * necessary behavior, but describing the interfaces it introduces. 27 * 28 * @author Rod Johnson 29 * @since 1.1.1 30 */ 31 public interface IntroductionInfo { 32 33 /** 34 * Return the additional interfaces introduced by this Advisor or Advice. 35 * @return the introduced interfaces 36 */ 37 Class[] getInterfaces(); 38 39 } 40