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Java > Open Source Codes > org > mr > ra > ConnectionManagerImpl


1 /*
2  * Copyright 2002 by
3  * <a HREF="http://www.coridan.com">Coridan</a>
4  * <a HREF="mailto: support@coridan.com ">support@coridan.com</a>
5  *
6  * The contents of this file are subject to the Mozilla Public License Version
7  * 1.1 (the "License"); you may not use this file except in compliance with the
8  * License. You may obtain a copy of the License at
9  * http://www.mozilla.org/MPL/
10  *
11  * Software distributed under the License is distributed on an "AS IS" basis,
12  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
13  * for the specific language governing rights and limitations under the
14  * License.
15  *
16  * The Original Code is "MantaRay" (TM).
17  *
18  * The Initial Developer of the Original Code is Coridan.
19  * Portions created by the Initial Developer are Copyright (C) 2006
20  * Coridan Inc. All Rights Reserved.
21  *
22  * Contributor(s): all the names of the contributors are added in the source
23  * code where applicable.
24  *
25  * Alternatively, the contents of this file may be used under the terms of the
26  * LGPL license (the "GNU LESSER GENERAL PUBLIC LICENSE"), in which case the
27  * provisions of LGPL are applicable instead of those above. If you wish to
28  * allow use of your version of this file only under the terms of the LGPL
29  * License and not to allow others to use your version of this file under
30  * the MPL, indicate your decision by deleting the provisions above and
31  * replace them with the notice and other provisions required by the LGPL.
32  * If you do not delete the provisions above, a recipient may use your version
33  * of this file under either the MPL or the GNU LESSER GENERAL PUBLIC LICENSE.
34  
35  *
36  * This library is free software; you can redistribute it and/or modify it
37  * under the terms of the MPL as stated above or under the terms of the GNU
38  * Lesser General Public License as published by the Free Software Foundation;
39  * either version 2.1 of the License, or any later version.
40  *
41  * This library is distributed in the hope that it will be useful, but WITHOUT
42  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
43  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
44  * License for more details.
45  */
46
47 package org.mr.ra;
48
49 import org.apache.commons.logging.Log;
50 import org.apache.commons.logging.LogFactory;
51
52 import javax.resource.ResourceException JavaDoc;
53 import javax.resource.spi.ConnectionEvent JavaDoc;
54 import javax.resource.spi.ConnectionEventListener JavaDoc;
55 import javax.resource.spi.ConnectionManager JavaDoc;
56 import javax.resource.spi.ConnectionRequestInfo JavaDoc;
57 import javax.resource.spi.ManagedConnection JavaDoc;
58 import javax.resource.spi.ManagedConnectionFactory JavaDoc;
59 import javax.security.auth.Subject JavaDoc;
60
61
62 /**
63  * A simple implementation of a ConnectionManager.
64  * An App Server will have a better implementation with pooling and security etc.
65  *
66  * @version $Revision: 1.1.1.1 $
67  */
68 public class ConnectionManagerImpl
69 implements ConnectionManager JavaDoc, ConnectionEventListener JavaDoc
70 {
71     private static final long serialVersionUID = 3257291335445918769L;
72     private static final Log log = LogFactory.getLog(ConnectionManagerImpl.class);
73
74     
75     ////////////////////////////////////////////////////////////////
76 //
77 // Implement the javax.resource.spi.ConnectionManager interface
78 //
79 ////////////////////////////////////////////////////////////////
80
81     /**
82      * @see javax.resource.spi.ConnectionManager#allocateConnection(javax.resource.spi.ManagedConnectionFactory, javax.resource.spi.ConnectionRequestInfo)
83      */
84     public Object JavaDoc allocateConnection(ManagedConnectionFactory JavaDoc connectionFactory, ConnectionRequestInfo JavaDoc info) throws ResourceException JavaDoc {
85         Subject JavaDoc subject = null;
86         ManagedConnection JavaDoc connection = connectionFactory.createManagedConnection(subject, info);
87         connection.addConnectionEventListener(this);
88         return connection.getConnection(subject, info);
89     }
90
91     
92     //////////////////////////////////////////////////////////////////////
93 //
94 // Implement the javax.resource.spi.ConnectionEventListener interface
95 //
96 //////////////////////////////////////////////////////////////////////
97
98     /**
99      * @see javax.resource.spi.ConnectionEventListener#connectionClosed(javax.resource.spi.ConnectionEvent)
100      */
101     public void connectionClosed(ConnectionEvent JavaDoc event) {
102         try {
103             ((ManagedConnection JavaDoc) event.getSource()).cleanup();
104         }
105         catch (ResourceException JavaDoc e) {
106             log.warn("Error occured during the cleanup of a managed connection: ", e);
107         }
108         try {
109             ((ManagedConnection JavaDoc) event.getSource()).destroy();
110         }
111         catch (ResourceException JavaDoc e) {
112             log.warn("Error occured during the destruction of a managed connection: ", e);
113         }
114     }
115
116     /**
117      * @see javax.resource.spi.ConnectionEventListener#localTransactionStarted(javax.resource.spi.ConnectionEvent)
118      */
119     public void localTransactionStarted(ConnectionEvent JavaDoc event) {
120     }
121
122     /**
123      * @see javax.resource.spi.ConnectionEventListener#localTransactionCommitted(javax.resource.spi.ConnectionEvent)
124      */
125     public void localTransactionCommitted(ConnectionEvent JavaDoc event) {
126     }
127
128     /**
129      * @see javax.resource.spi.ConnectionEventListener#localTransactionRolledback(javax.resource.spi.ConnectionEvent)
130      */
131     public void localTransactionRolledback(ConnectionEvent JavaDoc event) {
132     }
133
134     /**
135      * @see javax.resource.spi.ConnectionEventListener#connectionErrorOccurred(javax.resource.spi.ConnectionEvent)
136      */
137     public void connectionErrorOccurred(ConnectionEvent JavaDoc event) {
138         log.warn("Managed connection experiened an error: ", event.getException());
139         try {
140             ((ManagedConnection JavaDoc) event.getSource()).cleanup();
141         }
142         catch (ResourceException JavaDoc e) {
143             log.warn("Error occured during the cleanup of a managed connection: ", e);
144         }
145         try {
146             ((ManagedConnection JavaDoc) event.getSource()).destroy();
147         }
148         catch (ResourceException JavaDoc e) {
149             log.warn("Error occured during the destruction of a managed connection: ", e);
150         }
151     }
152
153 }
154
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