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


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 QueryNonExistant {
27     
28     QueryNonExistant1 member;
29     
30     public QueryNonExistant(){
31         // db4o constructor
32 }
33     
34     public QueryNonExistant(boolean createMembers){
35         member = new QueryNonExistant1();
36         member.member = new QueryNonExistant2();
37         member.member.member = this;
38         // db4o constructor
39 }
40     
41     public void test(){
42         ObjectContainer con = Test.objectContainer();
43         con.get((new QueryNonExistant(true)));
44         Test.ensureOccurrences(new QueryNonExistant(), 0);
45         Query q = con.query();
46         q.constrain(new QueryNonExistant(true));
47         Test.ensure(q.execute().size() == 0);
48     }
49     
50     public static class QueryNonExistant1{
51         QueryNonExistant2 member;
52     }
53     
54     public static class QueryNonExistant2 extends QueryNonExistant1{
55         QueryNonExistant member;
56     }
57     
58 }
59
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