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: import com.db4o.query.*;
27:
28: import db4ounit.*;
29: import db4ounit.extensions.*;
30:
31: public class DeleteDeepTestCase extends Db4oClientServerTestCase {
32:
33: public static void main(String[] args) {
34: new DeleteDeepTestCase().runConcurrency();
35: }
36:
37: public String name;
38:
39: public DeleteDeepTestCase child;
40:
41: protected void store() {
42: addNodes(10);
43: name = "root";
44: store(this );
45: }
46:
47: protected void configure(Configuration config) {
48: config.objectClass(DeleteDeepTestCase.class).cascadeOnDelete(
49: true);
50: // config.objectClass(DeleteDeepTestCase.class).cascadeOnActivate(true);
51: }
52:
53: private void addNodes(int count) {
54: if (count > 0) {
55: child = new DeleteDeepTestCase();
56: child.name = "" + count;
57: child.addNodes(count - 1);
58: }
59: }
60:
61: public void conc(ExtObjectContainer oc) throws Exception {
62: Query q = oc.query();
63: q.constrain(DeleteDeepTestCase.class);
64: q.descend("name").constrain("root");
65: ObjectSet os = q.execute();
66: if (os.size() == 0) { // already deleted
67: return;
68: }
69: Assert.areEqual(1, os.size());
70: if (!os.hasNext()) {
71: return;
72: }
73: DeleteDeepTestCase root = (DeleteDeepTestCase) os.next();
74:
75: // wait for other threads
76: // Thread.sleep(500);
77: oc.delete(root);
78: oc.commit();
79: assertOccurrences(oc, DeleteDeepTestCase.class, 0);
80: }
81:
82: public void check(ExtObjectContainer oc) {
83: assertOccurrences(oc, DeleteDeepTestCase.class, 0);
84: }
85:
86: }
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