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.assorted;
22:
23: import com.db4o.ObjectSet;
24: import com.db4o.config.Configuration;
25:
26: import db4ounit.Assert;
27: import db4ounit.extensions.AbstractDb4oTestCase;
28:
29: public class ReAddCascadedDeleteTestCase extends AbstractDb4oTestCase {
30:
31: public static void main(String[] args) {
32: new ReAddCascadedDeleteTestCase().runClientServer();
33: }
34:
35: public static class Item {
36:
37: public String _name;
38:
39: public Item _member;
40:
41: public Item() {
42: }
43:
44: public Item(String name) {
45: _name = name;
46: }
47:
48: public Item(String name, Item member) {
49: _name = name;
50: _member = member;
51: }
52: }
53:
54: protected void configure(Configuration config) {
55: config.objectClass(Item.class).cascadeOnDelete(true);
56: }
57:
58: protected void store() {
59: db().set(new Item("parent", new Item("child")));
60: }
61:
62: public void testDeletingAndReaddingMember() throws Exception {
63: deleteParentAndReAddChild();
64:
65: reopen();
66:
67: Assert.isNotNull(query("child"));
68: Assert.isNull(query("parent"));
69: }
70:
71: private void deleteParentAndReAddChild() {
72: Item i = query("parent");
73: db().delete(i);
74: db().set(i._member);
75: db().commit();
76: }
77:
78: private Item query(String name) {
79: ObjectSet objectSet = db().get(new Item(name));
80: if (!objectSet.hasNext()) {
81: return null;
82: }
83: return (Item) objectSet.next();
84: }
85: }
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