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Java > Open Source Codes > org > bsf > remoting > http > HttpServiceInvocationHandler


1 /**
2  *Copyright (c) 2002 Bright Side Factory. All rights
3  * reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  *
9  * 1. Redistributions of source code must retain the above copyright
10  * notice, this list of conditions and the following disclaimer.
11  *
12  * 2. Redistributions in binary form must reproduce the above copyright
13  * notice, this list of conditions and the following disclaimer in
14  * the documentation and/or other materials provided with the
15  * distribution.
16  *
17  * 3. The end-user documentation included with the redistribution,
18  * if any, must include the following acknowledgment:
19  * "This product includes software developed by the
20  * Bright Side Factory (http://www.bs-factory.org/)."
21  * Alternately, this acknowledgment may appear in the software itself,
22  * if and wherever such third-party acknowledgments normally appear.
23  *
24  * 4. The names "Bright Side", "BS Factory" and "Bright Side Factory" must
25  * not be used to endorse or promote products derived from this
26  * software without prior written permission. For written
27  * permission, please contact info@bs-factory.org.
28  *
29  * 5. Products derived from this software may not be called "Bright Side",
30  * nor may "Bright Side" appear in their name, without prior written
31  * permission of the Apache Software Foundation.
32  *
33  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
34  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
35  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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37  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
38  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
39  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
40  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
41  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
42  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
43  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
44  * SUCH DAMAGE.
45  * ====================================================================
46  *
47  * This software consists of voluntary contributions made by many
48  * individuals on behalf of the Bright Side Factory. For more
49  * information on the Bright Side Factory, please see
50  * <http://www.bs-factory.org/>.
51  *
52  */
53 package org.bsf.remoting.http;
54
55
56 import org.bsf.remoting.EJBDefinition;
57
58 import javax.ejb.EJBObject JavaDoc;
59 import java.lang.reflect.InvocationHandler JavaDoc;
60 import java.lang.reflect.Method JavaDoc;
61
62 /**
63  * The HttpServiceInvocationHandler is used to transmit the user request to the correct object which can
64  * be the remote service in case of direct connection or the user session client
65  * in case of Session connection. <p>
66  * This class is a dynamic proxy created by the HttpServiceFactory in case of
67  * stateless service or by the HttpSessionClient in case of statefull service.
68  * @author Gaetan Zoritchak
69  * @version 1.0
70  */
71
72 public class HttpServiceInvocationHandler implements InvocationHandler JavaDoc {
73
74     private Object JavaDoc _remote = null;
75     private EJBDefinition _service = null;
76     private HttpServiceKey _serviceKey = null;
77
78     private int _connectionMode;
79
80     /**
81      * This constructor is used for a stateless service
82      */
83     public HttpServiceInvocationHandler(EJBDefinition p_service) {
84         _service = p_service;
85     }
86
87     /**
88      * This constructor is used for a statefull service
89      */
90     public HttpServiceInvocationHandler(HttpServiceKey p_serviceKey) {
91         _serviceKey = p_serviceKey;
92     }
93
94     /**
95      * This method is called on every call on the interface
96      */
97     public Object JavaDoc invoke(Object JavaDoc p_proxy, Method JavaDoc p_method, Object JavaDoc[] p_args) throws Throwable JavaDoc {
98         Object JavaDoc result = null;
99         EJBObject JavaDoc ejbResult = null;
100         if (_serviceKey != null) {
101             return HttpSessionClient.getInstance().invoke(_serviceKey, p_method, p_args);
102         } else {
103             return HttpSessionClient.getInstance().invoke(_service, p_method, p_args);
104         }
105     }
106 }
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