CustomObjectInputStream


1   /*
2    * The contents of this file are subject to the terms 
3    * of the Common Development and Distribution License 
4    * (the "License").  You may not use this file except 
5    * in compliance with the License.
6    * 
7    * You can obtain a copy of the license at 
8    * glassfish/bootstrap/legal/CDDLv1.0.txt or 
9    * https://glassfish.dev.java.net/public/CDDLv1.0.html. 
10   * See the License for the specific language governing 
11   * permissions and limitations under the License.
12   * 
13   * When distributing Covered Code, include this CDDL 
14   * HEADER in each file and include the License file at 
15   * glassfish/bootstrap/legal/CDDLv1.0.txt.  If applicable, 
16   * add the following below this CDDL HEADER, with the 
17   * fields enclosed by brackets "[]" replaced with your 
18   * own identifying information: Portions Copyright [yyyy] 
19   * [name of copyright owner]
20   */
21  // Copyright (c) 1998, 2005, Oracle. All rights reserved.  
22  package oracle.toplink.essentials.internal.helper;
23  
24  import java.lang.Class  ;
25  import java.lang.ClassNotFoundException  ;
26  import java.io.IOException  ;
27  import java.io.InputStream  ;
28  import java.io.ObjectStreamClass  ;
29  import java.io.ObjectInputStream  ;
30  import oracle.toplink.essentials.sessions.Session;
31  import oracle.toplink.essentials.internal.helper.ConversionManager;
32  
33  /**
34   * INTERNAL:
35   * Defines a custom ObjectInputStream that is used with SerializedObjectMappings
36   * to ensure the correct class loader is used.
37   * BUG# 2813583
38   *
39   * @auther Guy Pelletier
40   * @version 1.0 March 25/03
41   */
42  public class CustomObjectInputStream extends ObjectInputStream   {
43      Session m_session;
44  
45      public CustomObjectInputStream(InputStream   stream, Session session) throws IOException   {
46          super(stream);
47          m_session = session;
48      }
49  
50      public Class   resolveClass(ObjectStreamClass   classDesc) throws ClassNotFoundException  , IOException   {
51          ConversionManager cm = m_session.getDatasourceLogin().getDatasourcePlatform().getConversionManager();
52          return (Class  )cm.convertObject(classDesc.getName(), Class  .class);
53      }
54  }
55
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