/*
 * 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,
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 * See the License for the specific language governing permissions and
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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 {qlink IntroductionInfo}, this interface allows an advice to implement a range of interfaces that is not necessarily known in advance. Thus an IntroductionAdvisor can be used to specify which interfaces will be exposed in an advised object.

Author:Rod Johnson
See Also:
Since:1.1.1
/** * 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 <b>introduction</b>. * * <p>Introductions are often <b>mixins</b>, enabling the building of composite * objects that can achieve many of the goals of multiple inheritance in Java. * * <p>Compared to {qlink 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?
Params:
  • intf – the interface to check
Returns:whether the advice implements the specified interface
/** * 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); }