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.db4ounit.common.cs;
22:
23: import com.db4o.ObjectContainer;
24: import com.db4o.query.Predicate;
25:
26: import db4ounit.Assert;
27: import db4ounit.extensions.AbstractDb4oTestCase;
28:
29: public class COR756TestCase extends AbstractDb4oTestCase {
30:
31: public static void main(String[] args) {
32: new COR756TestCase().runClientServer();
33: }
34:
35: public static class A {
36: public boolean isReferencedBy(B b) {
37: return this .equals(b.a);
38: }
39: }
40:
41: public static class B {
42: public A a;
43: }
44:
45: public static class BReferencedFromAPredicate extends Predicate {
46:
47: public A _a;
48:
49: public BReferencedFromAPredicate(A a) {
50: _a = a;
51: }
52:
53: public boolean match(Object b) {
54: return _a.isReferencedBy((B) b);
55: }
56:
57: }
58:
59: public void _test() {
60: A a = new A();
61: B b = new B();
62: b.a = a;
63: ObjectContainer oc = db();
64: oc.set(b);
65: oc.commit();
66: Assert.areEqual(1, oc.query(new BReferencedFromAPredicate(a))
67: .size());
68: }
69:
70: }
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