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Java > Open Source Codes > org > openejb > client > EJBHomeHandle


1 /**
2  * Redistribution and use of this software and associated documentation
3  * ("Software"), with or without modification, are permitted provided
4  * that the following conditions are met:
5  *
6  * 1. Redistributions of source code must retain copyright
7  * statements and notices. Redistributions must also contain a
8  * copy of this document.
9  *
10  * 2. Redistributions in binary form must reproduce the
11  * above copyright notice, this list of conditions and the
12  * following disclaimer in the documentation and/or other
13  * materials provided with the distribution.
14  *
15  * 3. The name "OpenEJB" must not be used to endorse or promote
16  * products derived from this Software without prior written
17  * permission of The OpenEJB Group. For written permission,
18  * please contact dev@openejb.org.
19  *
20  * 4. Products derived from this Software may not be called "OpenEJB"
21  * nor may "OpenEJB" appear in their names without prior written
22  * permission of The OpenEJB Group. OpenEJB is a registered
23  * trademark of The OpenEJB Group.
24  *
25  * 5. Due credit should be given to the OpenEJB Project
26  * (http://www.openejb.org/).
27  *
28  * THIS SOFTWARE IS PROVIDED BY THE OPENEJB GROUP AND CONTRIBUTORS
29  * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
30  * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
31  * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
32  * THE OPENEJB GROUP OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
33  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
34  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
35  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
37  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
38  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
39  * OF THE POSSIBILITY OF SUCH DAMAGE.
40  *
41  * Copyright 2001 (C) The OpenEJB Group. All Rights Reserved.
42  *
43  * $Id: EJBHomeHandle.java 1912 2005-06-16 22:29:56Z jlaskowski $
44  */
45 package org.openejb.client;
46
47 import java.io.IOException JavaDoc;
48 import java.io.ObjectInput JavaDoc;
49 import java.io.ObjectOutput JavaDoc;
50 import java.rmi.RemoteException JavaDoc;
51
52 import javax.ejb.EJBHome JavaDoc;
53
54 /**
55  *
56  * @author <a HREF="mailto:david.blevins@visi.com">David Blevins</a>
57  * @since 11/25/2001
58  */
59 public class EJBHomeHandle implements java.io.Externalizable JavaDoc, javax.ejb.HomeHandle JavaDoc {
60
61
62     protected transient EJBHomeProxy ejbHomeProxy;
63     protected transient EJBHomeHandler handler;
64
65     /** Public no-arg constructor required by Externalizable API */
66     public EJBHomeHandle() {}
67
68     public EJBHomeHandle(EJBHomeProxy proxy) {
69         this.ejbHomeProxy = proxy;
70         this.handler = ejbHomeProxy.getEJBHomeHandler();
71     }
72
73
74     protected void setEJBHomeProxy(EJBHomeProxy ejbHomeProxy) {
75         this.ejbHomeProxy = ejbHomeProxy;
76         this.handler = ejbHomeProxy.getEJBHomeHandler();
77     }
78
79     /**
80      * Obtain the home object represented by this handle.
81      *
82      * @exception RemoteException The home object could not be obtained
83      * because of a system-level failure.
84      */
85     public EJBHome JavaDoc getEJBHome() throws RemoteException JavaDoc{
86         return ejbHomeProxy;
87     }
88
89     //========================================
90 // Externalizable object implementation
91 //
92 public void writeExternal(ObjectOutput JavaDoc out) throws IOException JavaDoc{
93
94         // Write the full proxy data
95 handler.client.writeExternal( out );
96
97         EJBMetaDataImpl ejb = handler.ejb;
98         out.writeObject( ejb.homeClass );
99         out.writeObject( ejb.remoteClass );
100         out.writeObject( ejb.keyClass );
101         out.writeByte( ejb.type );
102         out.writeUTF( ejb.deploymentID );
103         out.writeShort( ejb.deploymentCode );
104         handler.server.writeExternal( out );
105     }
106
107     /**
108      * Reads the instanceHandle from the stream
109      *
110      * @param in
111      * @exception IOException
112      */
113     public void readExternal(ObjectInput JavaDoc in) throws IOException JavaDoc, ClassNotFoundException JavaDoc{
114         ClientMetaData client = new ClientMetaData();
115         EJBMetaDataImpl ejb = new EJBMetaDataImpl();
116         ServerMetaData server = new ServerMetaData();
117
118         client.readExternal( in );
119
120         ejb.homeClass = (Class JavaDoc) in.readObject();
121         ejb.remoteClass = (Class JavaDoc) in.readObject();
122         ejb.keyClass = (Class JavaDoc) in.readObject();
123         ejb.type = in.readByte();
124         ejb.deploymentID = in.readUTF();
125         ejb.deploymentCode = in.readShort();
126
127         server.readExternal( in );
128
129         handler = EJBHomeHandler.createEJBHomeHandler(ejb, server, client);
130         ejbHomeProxy = handler.createEJBHomeProxy();
131     }
132
133 }
134
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