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.querying;
22:
23: import com.db4o.*;
24: import com.db4o.config.*;
25: import com.db4o.query.*;
26:
27: import db4ounit.*;
28: import db4ounit.extensions.*;
29:
30: public class CascadedDeleteUpdate extends AbstractDb4oTestCase {
31:
32: public static class ParentItem {
33: public Object child;
34: }
35:
36: public static class ChildItem {
37: public Object parent1;
38: public Object parent2;
39: }
40:
41: public static void main(String[] arguments) {
42: // new CascadedDeleteUpdate().runSolo();
43: new CascadedDeleteUpdate().runClientServer();
44: }
45:
46: protected void configure(Configuration config) {
47: config.objectClass(ParentItem.class).cascadeOnDelete(true);
48: }
49:
50: protected void store() {
51: ParentItem parentItem1 = new ParentItem();
52: ParentItem parentItem2 = new ParentItem();
53:
54: ChildItem child = new ChildItem();
55: child.parent1 = parentItem1;
56: child.parent2 = parentItem2;
57: parentItem1.child = child;
58: parentItem2.child = child;
59:
60: db().set(parentItem1);
61: }
62:
63: public void testAllObjectStored() throws Exception {
64: assertAllObjectStored();
65: }
66:
67: public void testUpdate() throws Exception {
68: Query q = newQuery(ParentItem.class);
69: ObjectSet objectSet = q.execute();
70: while (objectSet.hasNext()) {
71: db().set(objectSet.next());
72: }
73: db().commit();
74: assertAllObjectStored();
75: }
76:
77: private void assertAllObjectStored() throws Exception {
78: reopen();
79: Query q = newQuery(ParentItem.class);
80: ObjectSet objectSet = q.execute();
81: while (objectSet.hasNext()) {
82: ParentItem parentItem = (ParentItem) objectSet.next();
83: db().refresh(parentItem, 3);
84: Assert.isNotNull(parentItem.child);
85: }
86: }
87:
88: }
|