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


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 QueryDeleted {
27     
28     public String JavaDoc name;
29     
30     public QueryDeleted(){
31     }
32     
33     public QueryDeleted(String JavaDoc name){
34         this.name = name;
35     }
36     
37     public void store(){
38         Test.deleteAllInstances(this);
39         Test.store(new QueryDeleted("one"));
40         Test.store(new QueryDeleted("two"));
41     }
42     
43     public void test(){
44         Query q = Test.query();
45         q.constrain(QueryDeleted.class);
46         q.descend("name").constrain("one");
47         QueryDeleted qd = (QueryDeleted)q.execute().next();
48         Test.delete(qd);
49         checkCount(1);
50         Test.rollBack();
51         checkCount(2);
52         Test.delete(qd);
53         checkCount(1);
54         Test.commit();
55         checkCount(1);
56     }
57     
58     private void checkCount(int count){
59         Query q = Test.query();
60         q.constrain(QueryDeleted.class);
61         ObjectSet res = q.execute();
62         Test.ensure(res.size() == count);
63     }
64     
65     
66 }
67
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