01: /*
02: * hgcommons 7
03: * Hammurapi Group Common Library
04: * Copyright (C) 2003 Hammurapi Group
05: *
06: * This program is free software; you can redistribute it and/or
07: * modify it under the terms of the GNU Lesser General Public
08: * License as published by the Free Software Foundation; either
09: * version 2 of the License, or (at your option) any later version.
10: *
11: * This program is distributed in the hope that it will be useful,
12: * but WITHOUT ANY WARRANTY; without even the implied warranty of
13: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14: * Lesser General Public License for more details.
15: *
16: * You should have received a copy of the GNU Lesser General Public
17: * License along with this library; if not, write to the Free Software
18: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19: *
20: * URL: http://www.hammurapi.biz/hammurapi-biz/ef/xmenu/hammurapi-group/products/products/hgcommons/index.html
21: * e-Mail: support@hammurapi.biz
22: */
23:
24: package biz.hammurapi.legacy.persistence;
25:
26: import java.util.HashMap;
27: import java.util.Map;
28:
29: /**
30: * This class allows to
31: * persist and unload from memory persistable objects which refer to
32: * non-persistable objects.
33: * @author Pavel Vlasov
34: * @version $Revision: 1.1 $
35: */
36: public class MemoryStorage implements Storage {
37: private static Map objects = new HashMap();
38: private static int counter;
39:
40: public String put(Object o) {
41: final String key = String.valueOf(counter++);
42: objects.put(key, o);
43: return key;
44: }
45:
46: public void remove(String key) {
47: objects.remove(key);
48: }
49:
50: public Object get(String key) {
51: return objects.get(key);
52: }
53: }
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