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.legacy;
22:
23: import java.util.*;
24:
25: import com.db4o.*;
26: import com.db4o.ext.*;
27: import com.db4o.query.*;
28: import com.db4o.test.*;
29:
30: public class PCollectionReferencedTwice {
31:
32: public void store() {
33:
34: Test.deleteAllInstances(this );
35:
36: ExtObjectContainer oc = Test.objectContainer();
37:
38: PCRTHolder one = new PCRTHolder();
39:
40: one._list = oc.collections().newLinkedList();
41:
42: one._list.add("Hi");
43:
44: oc.set(one);
45:
46: PCRTHolder two = new PCRTHolder();
47:
48: two._list = one._list;
49:
50: oc.set(two);
51: }
52:
53: public void test() {
54:
55: tListIdentity();
56:
57: Test.defragment();
58:
59: tListIdentity();
60:
61: }
62:
63: private void tListIdentity() {
64: ExtObjectContainer oc = Test.objectContainer();
65:
66: Query q = oc.query();
67: q.constrain(PCRTHolder.class);
68:
69: ObjectSet res = q.execute();
70:
71: Test.ensure(res.size() == 2);
72:
73: PCRTHolder one = (PCRTHolder) res.next();
74: PCRTHolder two = (PCRTHolder) res.next();
75:
76: Test.ensure(one._list == two._list);
77:
78: }
79:
80: public static class PCRTHolder {
81:
82: public List _list;
83:
84: }
85:
86: }
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