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Java > Open Source Codes > org > netbeans > modules > localhistory > store > LocalHistoryStoreFactory


1 /*
2  * The contents of this file are subject to the terms of the Common Development
3  * and Distribution License (the License). You may not use this file except in
4  * compliance with the License.
5  *
6  * You can obtain a copy of the License at http://www.netbeans.org/cddl.html
7  * or http://www.netbeans.org/cddl.txt.
8  *
9  * When distributing Covered Code, include this CDDL Header Notice in each file
10  * and include the License file at http://www.netbeans.org/cddl.txt.
11  * If applicable, add the following below the CDDL Header, with the fields
12  * enclosed by brackets [] replaced by your own identifying information:
13  * "Portions Copyrighted [year] [name of copyright owner]"
14  *
15  * The Original Software is NetBeans. The Initial Developer of the Original
16  * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
17  * Microsystems, Inc. All Rights Reserved.
18  */
19 package org.netbeans.modules.localhistory.store;
20
21 /**
22  *
23  * @author Tomas Stupka
24  */
25 public class LocalHistoryStoreFactory {
26             
27     private static LocalHistoryStoreFactory instance;
28     private static LocalHistoryStore storage;
29          
30     /** Creates a new instance of LocalHistoryStorageFactory */
31     private LocalHistoryStoreFactory() {
32     }
33     
34     public static LocalHistoryStoreFactory getInstance() {
35         if(instance == null) {
36             instance = new LocalHistoryStoreFactory();
37         }
38         return instance;
39     }
40     
41     public synchronized LocalHistoryStore createLocalHistoryStorage() {
42         if(storage == null) {
43             storage = new LocalHistoryStoreImpl();
44         }
45         return storage;
46     }
47     
48 }
49
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