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.test;
22:
23: import com.db4o.*;
24: import com.db4o.query.*;
25:
26: /**
27: *
28: */
29: public class IndexedUpdatesWithNull {
30:
31: public String str;
32:
33: public IndexedUpdatesWithNull() {
34: }
35:
36: public IndexedUpdatesWithNull(String str) {
37: this .str = str;
38: }
39:
40: public void configure() {
41: Db4o.configure().objectClass(this ).objectField("str").indexed(
42: true);
43: }
44:
45: public void store() {
46: Test.store(new IndexedUpdatesWithNull("one"));
47: Test.store(new IndexedUpdatesWithNull("two"));
48: Test.store(new IndexedUpdatesWithNull("three"));
49: Test.store(new IndexedUpdatesWithNull(null));
50: Test.store(new IndexedUpdatesWithNull(null));
51: Test.store(new IndexedUpdatesWithNull(null));
52: Test.store(new IndexedUpdatesWithNull(null));
53: Test.store(new IndexedUpdatesWithNull("four"));
54: }
55:
56: public void test() {
57: expectNulls(4, true);
58: expectNulls(3, false);
59: expectNulls(2, false);
60: expectNulls(1, true);
61: }
62:
63: private void expectNulls(int count, boolean commit) {
64: Query q = Test.query();
65: q.constrain(this .getClass());
66: q.descend("str").constrain(null);
67: ObjectSet objectSet = q.execute();
68: Test.ensure(objectSet.size() == count);
69: IndexedUpdatesWithNull iuwn = (IndexedUpdatesWithNull) objectSet
70: .next();
71: iuwn.str = "hi";
72: ObjectContainer oc = Test.objectContainer();
73: oc.set(iuwn);
74: if (commit) {
75: oc.commit();
76: }
77: }
78: }
|