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Java > Open Source Codes > org > jboss > system > pm > NullAttributePersistenceManager


1 /*
2 * JBoss, Home of Professional Open Source
3 * Copyright 2005, JBoss Inc., and individual contributors as indicated
4 * by the @authors tag. See the copyright.txt in the distribution for a
5 * full listing of individual contributors.
6 *
7 * This is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU Lesser General Public License as
9 * published by the Free Software Foundation; either version 2.1 of
10 * the License, or (at your option) any later version.
11 *
12 * This software is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this software; if not, write to the Free
19 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21 */
22 package org.jboss.system.pm;
23
24 import javax.management.AttributeList JavaDoc;
25 import org.jboss.mx.persistence.AttributePersistenceManager;
26 import org.w3c.dom.Element JavaDoc;
27 /**
28  * NullAttributePersistenceManager.
29  *
30  * @author <a HREF="mailto:dimitris@jboss.org">Dimitris Andreadis</a>
31  * @version $Revision: 57108 $
32  */
33 public class NullAttributePersistenceManager
34    implements AttributePersistenceManager
35 {
36    private boolean isCreated = false;
37    
38    public void create(String JavaDoc version, Element JavaDoc config)
39       throws Exception JavaDoc
40    {
41       isCreated = true;
42    }
43
44    public boolean getState()
45    {
46       return isCreated;
47    }
48    
49    public void destroy()
50    {
51       isCreated = false;
52    }
53    
54    // AttributePersistenceManager Persistence -----------------------
55
56    public boolean exists(String JavaDoc id)
57       throws Exception JavaDoc
58    {
59       return false;
60    }
61
62    public AttributeList JavaDoc load(String JavaDoc id)
63       throws Exception JavaDoc
64    {
65       return null;
66    }
67    
68    public void store(String JavaDoc id, AttributeList JavaDoc attrs)
69       throws Exception JavaDoc
70    {
71       // empty
72 }
73    
74    public void remove(String JavaDoc id)
75       throws Exception JavaDoc
76    {
77       // empty
78 }
79    
80    public void removeAll()
81       throws Exception JavaDoc
82    {
83       // empty
84 }
85    
86    public String JavaDoc[] listAll()
87       throws Exception JavaDoc
88    {
89       return new String JavaDoc[0];
90    }
91 }
92
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