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/*
 * Copyright 2002-2021 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
 *
 *      https://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
 * limitations under the License.
 */

package org.springframework.aop;

import org.aopalliance.aop.Advice;

/**
 * Subinterface of AOP Alliance Advice that allows additional interfaces
 * to be implemented by an Advice, and available via a proxy using that
 * interceptor. This is a fundamental AOP concept called introduction.
 *
 * 

Introductions are often mixins, enabling the building of composite * objects that can achieve many of the goals of multiple inheritance in Java. * *

Compared to {@link IntroductionInfo}, this interface allows an advice to * implement a range of interfaces that is not necessarily known in advance. * Thus an {@link IntroductionAdvisor} can be used to specify which interfaces * will be exposed in an advised object. * * @author Rod Johnson * @since 1.1.1 * @see IntroductionInfo * @see IntroductionAdvisor */ public interface DynamicIntroductionAdvice extends Advice { /** * Does this introduction advice implement the given interface? * @param intf the interface to check * @return whether the advice implements the specified interface */ boolean implementsInterface(Class intf); }





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