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


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 import com.db4o.query.*;
25
26 public class SodaNoDuplicates {
27     
28     public Atom atom;
29     
30     public void store(){
31         Test.deleteAllInstances(this);
32         Test.deleteAllInstances(new Atom());
33         Atom m1 = new Atom("One");
34         Atom m2 = new Atom("Two");
35         SodaNoDuplicates snd = new SodaNoDuplicates();
36         snd.atom = m1;
37         Test.store(snd);
38         snd = new SodaNoDuplicates();
39         snd.atom = m1;
40         Test.store(snd);
41         snd = new SodaNoDuplicates();
42         snd.atom = m2;
43         Test.store(snd);
44         snd = new SodaNoDuplicates();
45         snd.atom = m2;
46         Test.store(snd);
47     }
48     
49     public void test(){
50         Query q = Test.query();
51         q.constrain(SodaNoDuplicates.class);
52         Query qAtoms = q.descend("atom");
53         ObjectSet set = qAtoms.execute();
54         Test.ensure(set.size() == 2);
55     }
56     
57
58 }
59
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