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:
26: import db4ounit.*;
27: import db4ounit.extensions.*;
28:
29: public class CascadeOnDelete extends AbstractDb4oTestCase {
30:
31: public static class Item {
32: public String item;
33: }
34:
35: public Item[] items;
36:
37: public void test() throws Exception {
38: noAccidentalDeletes();
39: }
40:
41: private void noAccidentalDeletes() throws Exception {
42: noAccidentalDeletes1(true, true);
43: noAccidentalDeletes1(true, false);
44: noAccidentalDeletes1(false, true);
45: noAccidentalDeletes1(false, false);
46: }
47:
48: private void noAccidentalDeletes1(boolean cascadeOnUpdate,
49: boolean cascadeOnDelete) throws Exception {
50: deleteAll(getClass());
51: deleteAll(Item.class);
52:
53: ObjectClass oc = Db4o.configure().objectClass(
54: CascadeOnDelete.class);
55: oc.cascadeOnDelete(cascadeOnDelete);
56: oc.cascadeOnUpdate(cascadeOnUpdate);
57:
58: reopen();
59:
60: Item i = new Item();
61: CascadeOnDelete cod = new CascadeOnDelete();
62: cod.items = new Item[] { i };
63: db().set(cod);
64: db().commit();
65:
66: cod.items[0].item = "abrakadabra";
67: db().set(cod);
68: if (!cascadeOnDelete && !cascadeOnUpdate) {
69: // the only case, where we don't cascade
70: db().set(cod.items[0]);
71: }
72:
73: Assert.areEqual(1, countOccurences(Item.class));
74: db().commit();
75: Assert.areEqual(1, countOccurences(Item.class));
76: }
77: }
|