1. /*

  2.  * Copyright 2002-2004 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. import org.aopalliance.intercept.MethodInterceptor;

  20. 

  21. /**

  22.  * Subinterface of AOP Alliance MethodInterceptor that allows additional interfaces

  23.  * to be implemented by the interceptor, and available via a proxy using that

  24.  * interceptor. This is a fundamental AOP concept called <b>introduction</b>.

  25.  *

  26.  * <p>Introductions are often <b>mixins</b>, enabling the building of composite

  27.  * objects that can achieve many of the goals of multiple inheritance in Java.

  28.  *

  29.  * @author Rod Johnson

  30.  * @version $Id: IntroductionInterceptor.java,v 1.4 2004/03/18 02:46:07 trisberg Exp $

  31.  */

  32. public interface IntroductionInterceptor extends MethodInterceptor {

  33. 	

  34. 	/**

  35. 	 * Does this IntroductionInterceptor implement the given interface?

  36. 	 * @param intf interface to check

  37. 	 */

  38. 	boolean implementsInterface(Class intf);

  39. 

  40. }