CallerInterceptor


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15    * Lesser General Public License for more details.
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22  package org.jboss.test.aop.callerargs;
23  
24  import org.jboss.aop.advice.Interceptor;
25  import org.jboss.aop.joinpoint.ConstructorCalledByConstructorInvocation;
26  import org.jboss.aop.joinpoint.ConstructorCalledByMethodInvocation;
27  import org.jboss.aop.joinpoint.Invocation;
28  import org.jboss.aop.joinpoint.MethodCalledByConstructorInvocation;
29  import org.jboss.aop.joinpoint.MethodCalledByMethodInvocation;
30  
31  /**
32   * 
33   * @author <a HREF="kabir.khan@jboss.com">Kabir Khan</a>
34   * @version $Revision$
35   */
36  public class CallerInterceptor implements Interceptor
37  {
38     public static boolean intercepted;
39     public static int argsLength;
40     public static Object  [] args;
41  
42     public String   getName()
43     {
44        return "CallerInterceptor";
45     }
46  
47     public Object   invoke(Invocation invocation) throws Throwable  
48     {
49        System.out.println("caller intercepted");
50        intercepted = true;
51        Object  [] invArgs = getArguments(invocation);
52        if (invArgs == null)
53        {
54           argsLength = 0;
55        }
56        else
57        {
58           argsLength = invArgs.length;
59        }
60        args = invArgs;
61        
62        return invocation.invokeNext();
63     }
64  
65     private Object  [] getArguments(Invocation invocation)
66     {
67        if (invocation instanceof ConstructorCalledByConstructorInvocation)
68        {
69           return ((ConstructorCalledByConstructorInvocation)invocation).getArguments();
70        }
71        else if (invocation instanceof ConstructorCalledByMethodInvocation)
72        {
73           return ((ConstructorCalledByMethodInvocation)invocation).getArguments();
74        } 
75        else if (invocation instanceof MethodCalledByConstructorInvocation)
76        {
77           return ((MethodCalledByConstructorInvocation)invocation).getArguments();
78        }
79        else if (invocation instanceof MethodCalledByMethodInvocation)
80        {
81           return ((MethodCalledByMethodInvocation)invocation).getArguments();
82        }
83        return null; 
84     }
85  }
86
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