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. /**

  20.  * A TargetSource is used to obtain the current "target" of 

  21.  * an AOP invocation, which will be invoked via reflection if no

  22.  * around advice chooses to end the interceptor chain itself. 

  23.  * <br>If a TargetSource is "static", it will always

  24.  * return the same target, allowing optimizations in the AOP framework.

  25.  * Dynamic target sources can support pooling, hot swapping etc.

  26.  * <br>Application developers don't usually need to work with TargetSources

  27.  * directly: this is an AOP framework interface.

  28.  * @author Rod Johnson

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

  30.  */

  31. public interface TargetSource {

  32. 	

  33. 	Class getTargetClass();

  34. 	

  35. 	boolean isStatic();

  36. 	

  37. 	Object getTarget() throws Exception;

  38. 	

  39. 	void releaseTarget(Object target) throws Exception;

  40. 

  41. }