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Java > Open Source Codes > com > db4o > test > aliases > ClassAliasesInheritance


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.aliases;
22
23 import com.db4o.*;
24 import com.db4o.config.*;
25 import com.db4o.test.*;
26
27
28
29 public class ClassAliasesInheritance {
30     
31     public void test(){
32         
33         Test.store(new Parent1(new Child1()));
34         
35         ObjectContainer container = Test.reOpen();
36         container.ext().configure().addAlias(
37             new TypeAlias("com.db4o.test.aliases.Parent1",
38                         "com.db4o.test.aliases.Parent2"));
39         container.ext().configure().addAlias(
40             new TypeAlias("com.db4o.test.aliases.Child1",
41                         "com.db4o.test.aliases.Child2"));
42         
43         ObjectSet os = container.query(Parent2.class);
44         
45         Test.ensure(os.size() > 0);
46         
47         Parent2 p2 = (Parent2)os.next();
48         
49         Test.ensure(p2.child != null);
50     }
51
52 }
53
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