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.jre12.collections.custom;
22:
23: import java.util.*;
24:
25: import com.db4o.*;
26: import com.db4o.ext.*;
27: import com.db4o.query.*;
28:
29: import db4ounit.*;
30: import db4ounit.extensions.*;
31:
32: public class PCollectionReferencedTwiceTestCase extends
33: AbstractDb4oTestCase {
34:
35: protected void store() {
36:
37: ExtObjectContainer oc = db();
38:
39: PCRTHolder one = new PCRTHolder();
40:
41: one._list = oc.collections().newLinkedList();
42:
43: one._list.add("Hi");
44:
45: oc.set(one);
46:
47: PCRTHolder two = new PCRTHolder();
48:
49: two._list = one._list;
50:
51: oc.set(two);
52: }
53:
54: public void test() throws Exception {
55:
56: tListIdentity();
57:
58: reopen();
59:
60: tListIdentity();
61:
62: }
63:
64: private void tListIdentity() {
65: ExtObjectContainer oc = db();
66:
67: Query q = oc.query();
68: q.constrain(PCRTHolder.class);
69:
70: ObjectSet res = q.execute();
71:
72: Assert.areEqual(2, res.size());
73:
74: PCRTHolder one = (PCRTHolder) res.next();
75: PCRTHolder two = (PCRTHolder) res.next();
76:
77: Assert.areSame(one._list, two._list);
78:
79: }
80:
81: public static class PCRTHolder {
82:
83: public List _list;
84:
85: }
86:
87: }
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