KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > openejb > core > ivm > SpecialProxyInfo


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 "Exolab" must not be used to endorse or promote
16  * products derived from this Software without prior written
17  * permission of Exoffice Technologies. For written permission,
18  * please contact info@exolab.org.
19  *
20  * 4. Products derived from this Software may not be called "Exolab"
21  * nor may "Exolab" appear in their names without prior written
22  * permission of Exoffice Technologies. Exolab is a registered
23  * trademark of Exoffice Technologies.
24  *
25  * 5. Due credit should be given to the Exolab Project
26  * (http://www.exolab.org/).
27  *
28  * THIS SOFTWARE IS PROVIDED BY EXOFFICE TECHNOLOGIES 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  * EXOFFICE TECHNOLOGIES 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 1999 (C) Exoffice Technologies Inc. All Rights Reserved.
42  *
43  * $Id: SpecialProxyInfo.java 1096 2004-03-26 21:41:16Z dblevins $
44  */
45 package org.openejb.core.ivm;
46
47 import org.openejb.util.proxy.ProxyManager;
48
49 /**
50  * Business methods that return EJBHome or EJBObject references to local
51  * beans (beans in the same container system) must have the return value
52  * converted to a ProxyInfo object so that the server can provide the client
53  * with a proper remote reference. Local remote references -- called proxies --
54  * are handled using the org.openejb.core.ivm.BaseEjbProxyHandler types, which
55  * should not be returned to the client. Non-local remote references are assumed
56  * to be serializable and valid return types for the clients.
57  * <P>
58  * If the reference is a local remote reference -- a proxy -- this subtype of
59  * ProxyInfo is returned. This class type is useful when the calling server is
60  * the IntraVM server. Instead of creating a new remote ref from the proxy the
61  * IntraVM takes a short cut and reuses the original local remote reference --
62  * they are thread safe with no synchronization.
63  * <P>
64  * See Section 2.2.1.2.5 Remote References of the OpenEJB specification.
65  * <P>
66  *
67  * @see org.openejb.ProxyInfo
68  *
69  * @author <a HREF="mailto:Richard@Monson-Haefel.com">Richard Monson-Haefel</a>
70  * @author <a HREF="mailto:david.blevins@visi.com">David Blevins</a>
71  */
72 public class SpecialProxyInfo extends org.openejb.ProxyInfo {
73     
74     protected Object JavaDoc proxy;
75     
76     public SpecialProxyInfo(Object JavaDoc proxy){
77         super();
78         
79         this.proxy = proxy;
80         
81         BaseEjbProxyHandler handler = (BaseEjbProxyHandler)ProxyManager.getInvocationHandler( proxy );
82         
83         deploymentInfo = handler.deploymentInfo;
84         primaryKey = handler.primaryKey;
85         beanContainer = handler.container;
86         
87         if(handler instanceof EjbHomeProxyHandler)
88             type = deploymentInfo.getHomeInterface();
89         else
90             type = deploymentInfo.getRemoteInterface();
91         
92     }
93     
94     public Object JavaDoc getProxy(){
95         return proxy;
96     }
97 }
98
99
Popular Tags