1 /*
2 * JBoss, Home of Professional Open Source
3 * Copyright 2005, JBoss Inc., and individual contributors as indicated
4 * by the @authors tag. See the copyright.txt in the distribution for a
5 * full listing of individual contributors.
6 *
7 * This is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU Lesser General Public License as
9 * published by the Free Software Foundation; either version 2.1 of
10 * the License, or (at your option) any later version.
11 *
12 * This software is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this software; if not, write to the Free
19 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21 */
22 package org.jboss.proxy.ejb;
23
24 import java.lang.reflect.Method;
25 import java.rmi.RemoteException;
26
27 import org.jboss.invocation.Invocation;
28 import org.jboss.invocation.InvocationContext;
29 import org.jboss.invocation.InvocationKey;
30 import org.jboss.invocation.InvocationType;
31 import org.jboss.proxy.ejb.handle.StatelessHandleImpl;
32
33
34 /**
35 * An EJB stateless session bean proxy class.
36 *
37 * @author <a href="mailto:marc.fleury@jboss.org">Marc Fleury</a>
38 * @version $Revision: 37459 $
39 */
40 public class StatelessSessionInterceptor
41 extends GenericEJBInterceptor
42 {
43 /** Serial Version Identifier. @since 1.4 */
44 private static final long serialVersionUID = -8807189798153718350L;
45
46 /**
47 * No-argument constructor for externalization.
48 */
49 public StatelessSessionInterceptor()
50 {}
51
52
53 // Public --------------------------------------------------------
54
55 /**
56 * InvocationHandler implementation.
57 *
58 * @throws Throwable Any exception or error thrown while processing.
59 */
60 public Object invoke(Invocation invocation)
61 throws Throwable
62 {
63 InvocationContext ctx = invocation.getInvocationContext();
64 Method m = invocation.getMethod();
65
66 // Implement local methods
67 if (m.equals(TO_STRING))
68 {
69 return toString(ctx);
70 }
71 else if (m.equals(EQUALS))
72 {
73 Object[] args = invocation.getArguments();
74 String argsString = args[0] != null ? args[0].toString() : "";
75 String thisString = toString(ctx);
76 return new Boolean(thisString.equals(argsString));
77 }
78 else if (m.equals(HASH_CODE))
79 {
80 // We base the stateless hash on the hash of the proxy...
81 // MF XXX: it could be that we want to return the hash of the name?
82 return new Integer(this.hashCode());
83 }
84 // Implement local EJB calls
85 else if (m.equals(GET_HANDLE))
86 {
87 return new StatelessHandleImpl(
88 (String)ctx.getValue(InvocationKey.JNDI_NAME));
89 }
90 else if (m.equals(GET_PRIMARY_KEY))
91 {
92 throw new RemoteException("Call to getPrimaryKey not allowed on session bean");
93 }
94 else if (m.equals(GET_EJB_HOME))
95 {
96 return getEJBHome(invocation);
97 }
98 else if (m.equals(IS_IDENTICAL))
99 {
100 // All stateless beans are identical within a home,
101 // if the names are equal we are equal
102 Object[] args = invocation.getArguments();
103 String argsString = args[0].toString();
104 String thisString = toString(ctx);
105 return new Boolean(thisString.equals(argsString));
106 }
107 // If not taken care of, go on and call the container
108 else
109 {
110 invocation.setType(InvocationType.REMOTE);
111
112 return getNext().invoke(invocation);
113 }
114 }
115
116 // Package protected ---------------------------------------------
117
118 // Protected -----------------------------------------------------
119
120 // Private -------------------------------------------------------
121 private String toString(InvocationContext ctx)
122 {
123 return ctx.getValue(InvocationKey.JNDI_NAME) + ":Stateless";
124 }
125 }
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