Advisor.java :  » J2EE » spring-ide_2.3.0 » org » springframework » aop » Java Open Source

Java Open Source » J2EE » spring ide_2.3.0 
spring ide_2.3.0 » org » springframework » aop » Advisor.java
/*
 * 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 <b>advice</b> (action to take at a joinpoint)
 * and a filter determining the applicability of the advice (such as 
 * a pointcut). <i>This interface is not for use by Spring users, but to
 * allow for commonality in support for different types of advice.</i>
 *
 * <p>Spring AOP is based around <b>around advice</b> delivered via method
 * <b>interception</b>, compliant with the AOP Alliance interception API. 
 * The Advisor interface allows support for different types of advice,
 * such as <b>before</b> and <b>after</b> 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.
   * <p><b>Note that this method is not currently used by the framework.</b>
   * Typical Advisor implementations always return <code>true</code>.
   * 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();

}
java2s.com  | Contact Us | Privacy Policy
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.