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.concurrency;
22:
23: import com.db4o.*;
24: import com.db4o.config.*;
25: import com.db4o.ext.*;
26:
27: import db4ounit.extensions.*;
28:
29: public class CascadeDeleteFalseTestCase extends
30: Db4oClientServerTestCase {
31:
32: public static void main(String[] args) {
33: new CascadeDeleteFalseTestCase().runConcurrency();
34: }
35:
36: public static class Item {
37: public CascadeDeleteFalseHelper h1;
38:
39: public CascadeDeleteFalseHelper h2;
40:
41: public CascadeDeleteFalseHelper h3;
42: }
43:
44: protected void configure(Configuration config) {
45: config.objectClass(Item.class).cascadeOnDelete(true);
46: config.objectClass(Item.class).objectField("h3")
47: .cascadeOnDelete(false);
48: }
49:
50: protected void store() {
51: Item item = new Item();
52: item.h1 = new CascadeDeleteFalseHelper();
53: item.h2 = new CascadeDeleteFalseHelper();
54: item.h3 = new CascadeDeleteFalseHelper();
55: store(item);
56: }
57:
58: public void concDelete(ExtObjectContainer oc) throws Exception {
59: ObjectSet os = oc.query(Item.class);
60: if (os.size() == 0) { // the object has been deleted
61: return;
62: }
63: if (!os.hasNext()) {
64: // object can be deleted after query
65: return;
66: }
67: Item cdf = (Item) os.next();
68: // sleep 1000 ms, waiting for other threads.
69: // Thread.sleep(500);
70: oc.delete(cdf);
71: oc.commit();
72: assertOccurrences(oc, Item.class, 0);
73: assertOccurrences(oc, CascadeDeleteFalseHelper.class, 1);
74: }
75:
76: public void checkDelete(ExtObjectContainer oc) {
77: assertOccurrences(oc, CascadeDeleteFalseTestCase.class, 0);
78: assertOccurrences(oc, CascadeDeleteFalseHelper.class, 1);
79: }
80:
81: public static class CascadeDeleteFalseHelper {
82:
83: }
84: }
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