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Java > Open Source Codes > org > jboss > ejb3 > stateful > StatefulBeanContextReference


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.ejb3.stateful;
23
24 import java.io.Externalizable JavaDoc;
25 import java.io.ObjectInput JavaDoc;
26 import java.io.IOException JavaDoc;
27 import java.io.ObjectOutput JavaDoc;
28 import org.jboss.ejb3.Ejb3Registry;
29
30 /**
31  * Serializable reference to stateful bean context that can be disconnected
32  *
33  * @author <a HREF="mailto:bill@jboss.org">Bill Burke</a>
34  * @version $Revision: 40600 $
35  */
36 public class StatefulBeanContextReference implements Externalizable JavaDoc
37 {
38    private transient StatefulBeanContext beanContext;
39    private Object JavaDoc oid;
40    private String JavaDoc containerId;
41    
42    
43
44    public StatefulBeanContextReference()
45    {
46    }
47
48    public StatefulBeanContextReference(StatefulBeanContext beanContext)
49    {
50       this.beanContext = beanContext;
51       oid = beanContext.getId();
52       containerId = beanContext.getContainer().getObjectName().getCanonicalName();
53    }
54
55    public void readExternal(ObjectInput JavaDoc in) throws IOException JavaDoc, ClassNotFoundException JavaDoc
56    {
57       containerId = in.readUTF();
58       oid = in.readObject();
59    }
60
61    public void writeExternal(ObjectOutput JavaDoc out) throws IOException JavaDoc
62    {
63       out.writeUTF(containerId);
64       out.writeObject(oid);
65    }
66
67    public StatefulBeanContext getBeanContext()
68    {
69       if (beanContext == null)
70       {
71          StatefulContainer container = (StatefulContainer)Ejb3Registry.getContainer(containerId);
72          beanContext = container.getCache().get(oid);
73       }
74       return beanContext;
75    }
76 }
77
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