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Java > Open Source Codes > com > caucho > naming > InitialContextFactoryImpl


1 /*
2  * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3  *
4  * This file is part of Resin(R) Open Source
5  *
6  * Each copy or derived work must preserve the copyright notice and this
7  * notice unmodified.
8  *
9  * Resin Open Source is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * Resin Open Source is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17  * of NON-INFRINGEMENT. See the GNU General Public License for more
18  * details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with Resin Open Source; if not, write to the
22  * Free SoftwareFoundation, Inc.
23  * 59 Temple Place, Suite 330
24  * Boston, MA 02111-1307 USA
25  *
26  * @author Scott Ferguson
27  */
28
29 package com.caucho.naming;
30
31 import com.caucho.loader.EnvironmentLocal;
32 import com.caucho.util.L10N;
33
34 import javax.naming.Context JavaDoc;
35 import javax.naming.NamingException JavaDoc;
36 import javax.naming.spi.InitialContextFactory JavaDoc;
37 import java.util.Hashtable JavaDoc;
38 import java.util.logging.Logger JavaDoc;
39
40 /**
41  * Returns the JNDI context for the current classloader. Since each
42  * thread will normally have its own current class loader, the
43  * actual JNDI context is stored in the contextClassLoader.
44  */
45 public class InitialContextFactoryImpl implements InitialContextFactory JavaDoc
46 {
47   private static Logger JavaDoc log
48     = Logger.getLogger(InitialContextFactoryImpl.class.getName());
49   private static L10N L = new L10N(InitialContextFactoryImpl.class);
50
51   private static EnvironmentLocal<AbstractModel> _rootModel
52     = new EnvironmentLocal<AbstractModel>("caucho.naming.model.root");
53
54   /**
55    * Constructor with an initial root.
56    */
57   public InitialContextFactoryImpl()
58   {
59   }
60
61   /**
62    * Sets the model for the current class loader.
63    */
64   public static AbstractModel getContextModel()
65   {
66     return _rootModel.get();
67   }
68
69   /**
70    * Sets the model for the current class loader.
71    */
72   public static void setContextModel(AbstractModel model)
73   {
74     _rootModel.set(model);
75   }
76   
77   /**
78    * Returns the initial context for the current thread.
79    */
80   public Context JavaDoc getInitialContext(Hashtable JavaDoc<?,?> env)
81     throws NamingException JavaDoc
82   {
83     AbstractModel model = _rootModel.getLevel();
84
85     if (model == null) {
86       model = _rootModel.get();
87
88       if (model != null)
89         model = model.copy();
90       else
91         model = new MemoryModel();
92
93       _rootModel.set(model);
94     }
95
96     return new ContextImpl(model, env);
97   }
98 }
99
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