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: public class SodaEvaluation {
27:
28: public SodaEvaluation child;
29: public String name;
30:
31: public void store() {
32: Test.deleteAllInstances(this );
33: name = "one";
34: Test.store(this );
35: SodaEvaluation se = new SodaEvaluation();
36: se.child = new SodaEvaluation();
37: se.child.name = "three";
38: se.name = "two";
39: Test.store(se);
40:
41: }
42:
43: public void test() {
44: final String nameConstraint = "three";
45: Query q = Test.query();
46: Query cq = q;
47: q.constrain(this .getClass());
48: cq = cq.descend("child");
49: cq.constrain(new Evaluation() {
50: public void evaluate(Candidate candidate) {
51: candidate.include(((SodaEvaluation) candidate
52: .getObject()).name.equals(nameConstraint));
53: }
54: });
55: ObjectSet os = q.execute();
56: Test.ensure(os.size() == 1);
57: SodaEvaluation se = (SodaEvaluation) os.next();
58: Test.ensure(se.name.equals("two"));
59:
60: }
61:
62: }
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