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Java > Open Source Codes > org > jboss > ejb > plugins > TxInterceptorBMT


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.ejb.plugins;
23
24 import java.util.Map JavaDoc;
25
26 import org.jboss.invocation.Invocation;
27
28 import org.jboss.metadata.SessionMetaData;
29
30 /**
31  * This interceptor handles transactions for session BMT beans.
32  *
33  * @author <a HREF="mailto:marc.fleury@telkel.com">Marc Fleury</a>
34  * @author <a HREF="mailto:sebastien.alborini@m4x.org">Sebastien Alborini</a>
35  * @author <a HREF="mailto:peter.antman@tim.se">Peter Antman</a>.
36  * @author <a HREF="mailto:akkerman@cs.nyu.edu">Anatoly Akkerman</a>
37  * @author <a HREF="mailto:osh@sparre.dk">Ole Husgaard</a>
38  * @version $Revision: 37459 $
39  */
40 public class TxInterceptorBMT
41    extends AbstractTxInterceptorBMT
42 {
43
44    // Attributes ----------------------------------------------------
45
46    // Static --------------------------------------------------------
47
48    // Constructors --------------------------------------------------
49
50    // Public --------------------------------------------------------
51
52    // Interceptor implementation --------------------------------------
53
54    public void create()
55       throws Exception JavaDoc
56    {
57       // Do initialization in superclass.
58 super.create();
59  
60       // Set the atateless attribute
61 stateless = ((SessionMetaData)container.getBeanMetaData()).isStateless();
62    }
63
64    public Object JavaDoc invokeHome(Invocation mi)
65       throws Exception JavaDoc
66    {
67       // stateless: no context, no transaction, no call to the instance
68 if (stateless || mi.getEnterpriseContext() == null)
69          return getNext().invokeHome(mi);
70       else
71          return invokeNext(mi);
72    }
73
74    public Object JavaDoc invoke(Invocation mi)
75       throws Exception JavaDoc
76    {
77       return invokeNext(mi);
78    }
79
80   // Monitorable implementation ------------------------------------
81 public void sample(Object JavaDoc s)
82   {
83     // Just here to because Monitorable request it but will be removed soon
84 }
85   public Map JavaDoc retrieveStatistic()
86   {
87     return null;
88   }
89   public void resetStatistic()
90   {
91   }
92
93    // Protected ----------------------------------------------------
94
95    // Inner classes -------------------------------------------------
96
97 }
98
99
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