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
26 import org.jboss.invocation.Invocation;
27 import org.jboss.invocation.InvocationContext;
28 import org.jboss.invocation.InvocationKey;
29 import org.jboss.invocation.InvocationType;
30 import org.jboss.proxy.ejb.handle.EntityHandleImpl;
31
32 /**
33 * An EJB entity bean proxy class.
34 * @author <a href="mailto:marc.fleury@jboss.org">Marc Fleury</a>
35 * @version $Revision: 37459 $
36 */
37 public class EntityInterceptor
38 extends GenericEJBInterceptor
39 {
40 /** Serial Version Identifier. @since 1.6 */
41 private static final long serialVersionUID = 4399705304832568350L;
42
43 /**
44 * No-argument constructor for externalization.
45 */
46 public EntityInterceptor()
47 {}
48
49 // Public --------------------------------------------------------
50
51 /**
52 * InvocationHandler implementation.
53 *
54 * @param proxy The proxy object.
55 * @param m The method being invoked.
56 * @param args The arguments for the method.
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
65 Method m = invocation.getMethod();
66
67 // Implement local methods
68 if (m.equals(TO_STRING))
69 {
70 return toString(ctx);
71 }
72 else if (m.equals(EQUALS))
73 {
74 Object[] args = invocation.getArguments();
75 String argsString = args[0] != null ? args[0].toString() : "";
76 String thisString = toString(ctx);
77 return new Boolean(thisString.equals(argsString));
78 }
79 else if (m.equals(HASH_CODE))
80 {
81 return new Integer(ctx.getCacheId().hashCode());
82 }
83 // Implement local EJB calls
84 else if (m.equals(GET_HANDLE))
85 {
86 String jndiName = (String) ctx.getValue(InvocationKey.JNDI_NAME);
87 Object id = ctx.getCacheId();
88 return new EntityHandleImpl(jndiName, id);
89 }
90 else if (m.equals(GET_PRIMARY_KEY))
91 {
92 return ctx.getCacheId();
93 }
94 else if (m.equals(GET_EJB_HOME))
95 {
96 return getEJBHome(invocation);
97 }
98 else if (m.equals(IS_IDENTICAL))
99 {
100 Object[] args = invocation.getArguments();
101 String argsString = args[0].toString();
102 String thisString = toString(ctx);
103 return new Boolean(thisString.equals(argsString));
104 }
105 // If not taken care of, go on and call the container
106 else
107 {
108 // We are a Remote invocation
109 invocation.setType(InvocationType.REMOTE);
110 // We pertain to this ID (represented by cache ID)
111 invocation.setId(ctx.getCacheId());
112 return getNext().invoke(invocation);
113 }
114 }
115
116 // Package protected ---------------------------------------------
117
118 // Protected -----------------------------------------------------//////
119 private String toString(InvocationContext ctx)
120 {
121 return ctx.getValue(InvocationKey.JNDI_NAME) + ":" +
122 ctx.getCacheId().toString();
123 }
124
125 }
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