1 package org.apache.fulcrum.yaafi.framework.interceptor;
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23 /**
24 * Defining the common interface of all interceptors.
25 *
26 * @author <a href="mailto:siegfried.goeschl@it20one.at">Siegfried Goeschl</a>
27 */
28
29 public interface AvalonInterceptorService
30 {
31 /** indicating entering a service method */
32 int ON_ENTRY = 0;
33
34 /** indicating exiting a service method without throwing an exception */
35 int ON_EXIT = 1;
36
37 /** indicating exiting a service method throwing an exception */
38 int ON_ERROR = 2;
39
40 /**
41 * Called before a service method is invoked.
42 *
43 * @param avalonInterceptorContext shared interceptor context
44 */
45 void onEntry( AvalonInterceptorContext avalonInterceptorContext );
46
47 /**
48 * Called after a service method was invoked.
49 *
50 * @param avalonInterceptorContext shared interceptor context
51 * @param result the result of the invocation
52 */
53 void onExit( AvalonInterceptorContext avalonInterceptorContext, Object result );
54
55 /**
56 * Called when a service method throws an exeption
57 *
58 * @param avalonInterceptorContext shared interceptor context
59 * @param t the resulting exception
60 */
61 void onError( AvalonInterceptorContext avalonInterceptorContext, Throwable t);
62 }