01: /**
02: * EasyBeans
03: * Copyright (C) 2006 Bull S.A.S.
04: * Contact: easybeans@ow2.org
05: *
06: * This library is free software; you can redistribute it and/or
07: * modify it under the terms of the GNU Lesser General Public
08: * License as published by the Free Software Foundation; either
09: * version 2.1 of the License, or any later version.
10: *
11: * This library is distributed in the hope that it will be useful,
12: * but WITHOUT ANY WARRANTY; without even the implied warranty of
13: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14: * Lesser General Public License for more details.
15: *
16: * You should have received a copy of the GNU Lesser General Public
17: * License along with this library; if not, write to the Free Software
18: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
19: * USA
20: *
21: * --------------------------------------------------------------------------
22: * $Id: StatelessInterceptor.java 1970 2007-10-16 11:49:25Z benoitf $
23: * --------------------------------------------------------------------------
24: */package org.ow2.easybeans.examples.statelessbean;
25:
26: import java.lang.reflect.Method;
27:
28: import javax.annotation.PostConstruct;
29: import javax.interceptor.AroundInvoke;
30: import javax.interceptor.InvocationContext;
31:
32: /**
33: * Simple interceptor class. Mix of business interceptors and lifecycle interceptors.
34: * @author Florent Benoit
35: */
36: public class StatelessInterceptor {
37:
38: /**
39: * Another class interceptor.
40: * @param invocationContext contains attributes of invocation
41: * @return method's invocation result
42: * @throws Exception if invocation fails
43: */
44: @SuppressWarnings("finally")
45: @AroundInvoke
46: public Object toto(final InvocationContext invocationContext)
47: throws Exception {
48: System.out.println("Another class interceptor");
49: Method m = invocationContext.getMethod();
50: // Change the returned value for add method
51: Object returnedValue = null;
52: try {
53: returnedValue = invocationContext.proceed();
54: } finally {
55: if (m.getName().equals("add")) {
56: // Uncomment the following line to change the returned value
57: //return Integer.valueOf(-1);
58: return returnedValue;
59: }
60: return returnedValue;
61: }
62: }
63:
64: /**
65: * Callback in an external class.
66: * @param invocationContext the invocationcontext.
67: */
68: @PostConstruct
69: public void myPostConst(final InvocationContext invocationContext) {
70: System.out
71: .println("postConstruct in class Statelesslistener of bean "
72: + invocationContext.getTarget());
73: try {
74: invocationContext.proceed();
75: } catch (Exception e) {
76: throw new RuntimeException(
77: "Cannot proceed invocationContext", e);
78: }
79: }
80:
81: }
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