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


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 java.io.*;
24
25 import com.db4o.*;
26 import com.db4o.query.*;
27
28
29 public class Backup {
30     
31     static int allAtomCount;
32     static int specialAtomCount;
33     
34     static final String JavaDoc FILE = "backuptest.yap";
35     static final String JavaDoc NAME = "backuptest";
36     
37     public void store(){
38         if(! Test.isClientServer()){
39             new File(FILE).delete();
40             Test.store(new Atom(NAME));
41             Test.commit();
42             
43             Query q = Test.query();
44             q.constrain(Atom.class);
45             allAtomCount = q.execute().size();
46             q = Test.query();
47             q.constrain(Atom.class);
48             q.descend("name").constrain(NAME);
49             specialAtomCount = q.execute().size();
50             try {
51                 Test.objectContainer().ext().backup(FILE);
52             } catch (IOException e) {
53                 e.printStackTrace();
54             }
55         }
56     }
57     
58     public void test(){
59         if(! Test.isClientServer()){
60             ObjectContainer objectContainer = Db4o.openFile(FILE);
61             Query q = objectContainer.query();
62             q.constrain(Atom.class);
63             Test.ensure(allAtomCount == q.execute().size());
64             q = Test.query();
65             q.constrain(Atom.class);
66             q.descend("name").constrain(NAME);
67             ObjectSet objectSet = q.execute();
68             Test.ensure(objectSet.size() == specialAtomCount);
69             Atom atom = (Atom)objectSet.next();
70             Test.ensure(atom.name.equals(NAME));
71             objectContainer.close();
72         }
73     }
74     
75     
76 }
77
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