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Java > Open Source Codes > com > db4o > test > DualDelete


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.test;
22
23 import com.db4o.*;
24
25 public class DualDelete {
26     
27     public Atom atom;
28     
29     public void configure(){
30         Db4o.configure().objectClass(this).cascadeOnDelete(true);
31         Db4o.configure().objectClass(this).cascadeOnUpdate(true);
32     }
33     
34     public void store(){
35         Test.deleteAllInstances(this);
36         Test.deleteAllInstances(new Atom());
37         DualDelete dd1 = new DualDelete();
38         dd1.atom = new Atom("justone");
39         Test.store(dd1);
40         DualDelete dd2 = new DualDelete();
41         dd2.atom = dd1.atom;
42         Test.store(dd2);
43     }
44     
45     public void test(){
46         Test.deleteAllInstances(this);
47         Test.ensureOccurrences(new Atom(), 0);
48         Test.rollBack();
49         Test.ensureOccurrences(new Atom(), 1);
50         Test.deleteAllInstances(this);
51         Test.ensureOccurrences(new Atom(), 0);
52         Test.commit();
53         Test.ensureOccurrences(new Atom(), 0);
54         Test.rollBack();
55         Test.ensureOccurrences(new Atom(), 0);
56     }
57     
58
59 }
60
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