01: /* Copyright (C) 2004 - 2007 db4objects Inc. http://www.db4o.com
02:
03: This file is part of the db4o open source object database.
04:
05: db4o is free software; you can redistribute it and/or modify it under
06: the terms of version 2 of the GNU General Public License as published
07: by the Free Software Foundation and as clarified by db4objects' GPL
08: interpretation policy, available at
09: 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.ext.*;
25: import com.db4o.query.*;
26:
27: public class TestDescend {
28:
29: public TestDescend _child;
30:
31: public String _name;
32:
33: public TestDescend() {
34:
35: }
36:
37: public TestDescend(TestDescend child, String name) {
38: _child = child;
39: _name = name;
40: }
41:
42: public void storeOne() {
43: _child = new TestDescend(new TestDescend(new TestDescend(null,
44: "3"), "2"), "1");
45: _name = "0";
46: }
47:
48: public void test() {
49: if (Test.isClientServer()) {
50: return;
51: }
52: Query q = Test.query();
53: q.constrain(this .getClass());
54: q.descend("_name").constrain("0");
55: ObjectSet objectSet = q.execute();
56: TestDescend res = (TestDescend) objectSet.next();
57:
58: ExtObjectContainer oc = Test.objectContainer();
59:
60: Object obj = oc.descend(res, new String[] { "_name" });
61: Test.ensure(obj.equals("0"));
62:
63: obj = oc.descend(res, new String[] { "_child", "_child",
64: "_name" });
65: Test.ensure(obj.equals("2"));
66:
67: obj = oc.descend(res, new String[] { "_child", "_child",
68: "_child", "_name" });
69: Test.ensure(obj.equals("3"));
70:
71: obj = oc.descend(res, new String[] { "_child", "CRAP",
72: "_child", "_name" });
73: Test.ensure(obj == null);
74: }
75:
76: }
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