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.db4ounit.common.persistent.*;
25: import com.db4o.ext.*;
26: import com.db4o.query.*;
27:
28: import db4ounit.*;
29: import db4ounit.extensions.*;
30:
31: public class ReadObjectNQTestCase extends Db4oClientServerTestCase {
32:
33: public static void main(String[] args) {
34: new ReadObjectNQTestCase().runConcurrency();
35: }
36:
37: private static String testString = "simple test string";
38:
39: protected void store() throws Exception {
40: for (int i = 0; i < threadCount(); i++) {
41: store(new SimpleObject(testString + i, i));
42: }
43: }
44:
45: public void concReadSameObject(ExtObjectContainer oc)
46: throws Exception {
47: int mid = threadCount() / 2;
48: final SimpleObject expected = new SimpleObject(
49: testString + mid, mid);
50: ObjectSet result = oc.query(new MyPredicate(expected));
51: Assert.areEqual(1, result.size());
52: Assert.areEqual(expected, result.next());
53: }
54:
55: public void concReadDifferentObject(ExtObjectContainer oc, int seq)
56: throws Exception {
57: final SimpleObject expected = new SimpleObject(
58: testString + seq, seq);
59: ObjectSet result = oc.query(new MyPredicate(expected));
60: Assert.areEqual(1, result.size());
61: Assert.areEqual(expected, result.next());
62: }
63:
64: public static class MyPredicate extends Predicate<SimpleObject> {
65: SimpleObject expected;
66:
67: MyPredicate(SimpleObject o) {
68: this .expected = o;
69: }
70:
71: public boolean match(SimpleObject candidate) {
72: return expected.equals(candidate);
73: }
74: }
75:
76: }
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