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/*
 * Copyright 2002-2007 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,
 * 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;

/** 
 * Base interface holding AOP advice (action to take at a joinpoint)
 * and a filter determining the applicability of the advice (such as 
 * a pointcut). This interface is not for use by Spring users, but to
 * allow for commonality in support for different types of advice.
 *
 * 

Spring AOP is based around around advice delivered via method * interception, compliant with the AOP Alliance interception API. * The Advisor interface allows support for different types of advice, * such as before and after advice, which need not be * implemented using interception. * * @author Rod Johnson */ public interface Advisor { /** * Return the advice part of this aspect. An advice may be an * interceptor, a before advice, a throws advice, etc. * @return the advice that should apply if the pointcut matches * @see org.aopalliance.intercept.MethodInterceptor * @see BeforeAdvice * @see ThrowsAdvice * @see AfterReturningAdvice */ Advice getAdvice(); /** * Return whether this advice is associated with a particular instance * (for example, creating a mixin) or shared with all instances of * the advised class obtained from the same Spring bean factory. *

Note that this method is not currently used by the framework. * Typical Advisor implementations always return true. * Use singleton/prototype bean definitions or appropriate programmatic * proxy creation to ensure that Advisors have the correct lifecycle model. * @return whether this advice is associated with a particular target instance */ boolean isPerInstance(); }





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