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Java > Open Source Codes > com > db4o > db4ounit > common > header > SimpleTimeStampIdTestCase


1 /* Copyright (C) 2004 - 2006 db4objects Inc. http://www.db4o.com
2
3 This file is part of the db4o open source object database.
4
5 db4o is free software; you can redistribute it and/or modify it under
6 the terms of version 2 of the GNU General Public License as published
7 by the Free Software Foundation and as clarified by db4objects' GPL
8 interpretation policy, available at
9 http://www.db4o.com/about/company/legalpolicies/gplinterpretation/
10 Alternatively you can write to db4objects, Inc., 1900 S Norfolk Street,
11 Suite 350, San Mateo, CA 94403, USA.
12
13 db4o is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 for more details.
17
18 You should have received a copy of the GNU General Public License along
19 with this program; if not, write to the Free Software Foundation, Inc.,
20 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21 package com.db4o.db4ounit.common.header;
22
23 import com.db4o.YapFile;
24 import com.db4o.config.*;
25
26 import db4ounit.Assert;
27 import db4ounit.extensions.AbstractDb4oTestCase;
28 import db4ounit.extensions.fixtures.OptOutCS;
29
30 public class SimpleTimeStampIdTestCase extends AbstractDb4oTestCase implements
31         OptOutCS {
32
33     public static void main(String JavaDoc[] arguments) {
34         new SimpleTimeStampIdTestCase().runSolo();
35     }
36
37     public static class STSItem {
38
39         public String JavaDoc _name;
40
41         public STSItem() {
42         }
43
44         public STSItem(String JavaDoc name) {
45             _name = name;
46         }
47     }
48
49     protected void configure(Configuration config) {
50         ObjectClass objectClass = config.objectClass(STSItem.class);
51         objectClass.generateUUIDs(true);
52         objectClass.generateVersionNumbers(true);
53     }
54
55     protected void store() {
56         db().set(new STSItem("one"));
57     }
58
59     public void test() throws Exception JavaDoc {
60         STSItem item = (STSItem) db().get(STSItem.class).next();
61
62         long version = db().getObjectInfo(item).getVersion();
63         Assert.isGreater(0, version);
64         Assert.isGreaterOrEqual(version, currentVersion());
65
66         reopen();
67
68         STSItem item2 = new STSItem("two");
69         db().set(item2);
70
71         long secondVersion = db().getObjectInfo(item2).getVersion();
72
73         Assert.isGreater(version, secondVersion);
74         Assert.isGreaterOrEqual(secondVersion, currentVersion());
75     }
76
77     private long currentVersion() {
78         return ((YapFile) db()).currentVersion();
79     }
80 }
81
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