NamingManager


1   /**
2    * Copyright (C) 2001-2004
3    * - France Telecom R&D
4    *
5    * This library is free software; you can redistribute it and/or
6    * modify it under the terms of the GNU Lesser General Public
7    * License as published by the Free Software Foundation; either
8    * version 2 of the License, or (at your option) any later version.
9    *
10   * This library is distributed in the hope that it will be useful,
11   * but WITHOUT ANY WARRANTY; without even the implied warranty of
12   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13   * Lesser General Public License for more details.
14   *
15   * You should have received a copy of the GNU Lesser General Public
16   * License along with this library; if not, write to the Free Software
17   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
18   *
19   * Authors: P. Dechamboux, S. Chassande-Barrioz
20   *
21   */
22  
23  package org.objectweb.perseus.jndi;
24  
25  import org.objectweb.perseus.jndi.ContextImpl;
26  
27  import javax.naming.Context  ;
28  import javax.naming.InitialContext  ;
29  import javax.naming.NamingException  ;
30  
31  /**
32   * Naming Manager
33   * this singleton class must exist in each jonas server.
34   */
35  public class NamingManager {
36  
37      private InitialContext   ictx = null;
38  
39      private static NamingManager unique = null;
40  
41      public static NamingManager getInstance() throws NamingException   {
42          if (unique == null) 
43              unique = new NamingManager();
44          return unique;
45      }
46  
47      /**
48       * Create the naming manager.
49       * useful to create InitialContext because it may throw an exception.
50       */
51      private NamingManager() throws NamingException   {
52          // Create the initial context
53          ictx = new InitialContext  ();
54      }
55  
56      /**
57       * return the initialContext
58       */
59      public InitialContext   getInitialContext() {
60          return ictx;
61      }
62  
63      /**
64       * Create a new Context 
65       */
66      public Context   createContext(String   namespace) throws NamingException   {
67          return new ContextImpl(namespace);
68      }
69      
70  }
71
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