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.query.*;
25:
26: /**
27: *
28: */
29: public class IndexedByIdentity {
30:
31: public Atom atom;
32:
33: static final int COUNT = 10;
34:
35: public void configure() {
36: Db4o.configure().objectClass(this ).objectField("atom").indexed(
37: true);
38: }
39:
40: public void store() {
41: for (int i = 0; i < COUNT; i++) {
42: IndexedByIdentity ibi = new IndexedByIdentity();
43: ibi.atom = new Atom("ibi" + i);
44: Test.store(ibi);
45: }
46: }
47:
48: public void test() {
49: readAndUpdate("ibi");
50: readAndUpdate("updated");
51:
52: }
53:
54: private void readAndUpdate(String atomName) {
55: for (int i = 0; i < COUNT; i++) {
56: Query q = Test.query();
57: q.constrain(Atom.class);
58: q.descend("name").constrain(atomName + i);
59: ObjectSet objectSet = q.execute();
60: Atom child = (Atom) objectSet.next();
61: // child.name = "rnzelbrnft";
62: q = Test.query();
63: q.constrain(IndexedByIdentity.class);
64: q.descend("atom").constrain(child).identity();
65: objectSet = q.execute();
66: Test.ensure(objectSet.size() == 1);
67: IndexedByIdentity ibi = (IndexedByIdentity) objectSet
68: .next();
69: Test.ensure(ibi.atom == child);
70: ibi.atom = new Atom("updated" + i);
71: Test.store(ibi);
72: }
73:
74: }
75:
76: }
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