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Java > Open Source Codes > com > tc > aspectwerkz > joinpoint > JoinPoint


1 /*
2  * All content copyright (c) 2003-2006 Terracotta, Inc., except as may otherwise be noted in a separate copyright notice. All rights reserved.
3  */
4 package com.tc.aspectwerkz.joinpoint;
5
6 /**
7  * Implements the join point concept, e.g. defines a well defined point in the program flow.
8  * <p/>
9  * Provides access to runtime type information (RTTI), is therefore significantly <b>slower</b>
10  * than the usage of the {@link com.tc.aspectwerkz.joinpoint.StaticJoinPoint} interface.
11  *
12  * @author <a HREF="mailto:jboner@codehaus.org">Jonas BonŽr </a>
13  */
14 public interface JoinPoint extends StaticJoinPoint {
15
16   /**
17    * Returns the callee instance.
18    *
19    * @return the callee instance
20    */
21   Object JavaDoc getCallee();
22
23   /**
24    * Returns the caller instance.
25    *
26    * @return the caller instance
27    */
28   Object JavaDoc getCaller();
29
30   /**
31    * Returns the 'this' instance (the one currently executing).
32    *
33    * @return 'this'
34    */
35   Object JavaDoc getThis();
36
37   /**
38    * Returns the target instance. If the join point is executing in a static context it returns null.
39    *
40    * @return the target instance
41    */
42   Object JavaDoc getTarget();
43
44   /**
45    * Returns the JoinPoint RTTI
46    *
47    * @return the Rtti
48    */
49   Rtti getRtti();
50 }
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