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Java > Open Source Codes > fr > dyade > aaa > jndi2 > impl > ContextCache


1 /*
2  * JORAM: Java(TM) Open Reliable Asynchronous Messaging
3  * Copyright (C) 2001 - ScalAgent Distributed Technologies
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 2.1 of the License, or 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
18  * USA.
19  *
20  * Initial developer(s): Sofiane Chibani
21  * Contributor(s): David Feliot, Nicolas Tachker
22  */
23 package fr.dyade.aaa.jndi2.impl;
24
25 import java.util.*;
26 import java.lang.ref.*;
27
28 public class ContextCache implements ContextTable {
29
30   private Hashtable table;
31
32   public ContextCache() {
33     table = new Hashtable();
34   }
35
36   public void put(Object JavaDoc key, NamingContext nc) {
37     SoftReference sr = new SoftReference(nc);
38     table.put(key, sr);
39   }
40
41   public NamingContext get(Object JavaDoc key) {
42     SoftReference sr =
43       (SoftReference)table.get(key);
44     if (sr != null) {
45       Object JavaDoc obj = sr.get();
46       if (obj != null) {
47         return (NamingContext)obj;
48       }
49     }
50     return null;
51   }
52
53   public void remove(Object JavaDoc key) {
54     table.remove(key);
55   }
56 }
57
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