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.ObjectSet;
24: import com.db4o.query.Query;
25:
26: import db4ounit.Assert;
27: import db4ounit.extensions.AbstractDb4oTestCase;
28:
29: /**
30: * @exclude
31: */
32: public class OrderedQueryTestCase extends AbstractDb4oTestCase {
33:
34: public static void main(String[] args) {
35: new OrderedQueryTestCase().runSolo();
36: }
37:
38: public static final class Item {
39: public int value;
40:
41: public Item(int value) {
42: this .value = value;
43: }
44: }
45:
46: protected void store() throws Exception {
47: db().set(new Item(1));
48: db().set(new Item(3));
49: db().set(new Item(2));
50: }
51:
52: public void testOrderAscending() {
53: final Query query = newQuery(Item.class);
54: query.descend("value").orderAscending();
55: assertQuery(new int[] { 1, 2, 3 }, query.execute());
56: }
57:
58: public void testOrderDescending() {
59: final Query query = newQuery(Item.class);
60: query.descend("value").orderDescending();
61: assertQuery(new int[] { 3, 2, 1 }, query.execute());
62: }
63:
64: private void assertQuery(int[] expected, ObjectSet actual) {
65: for (int i = 0; i < expected.length; i++) {
66: Assert.isTrue(actual.hasNext());
67: Assert.areEqual(expected[i], ((Item) actual.next()).value);
68: }
69: Assert.isFalse(actual.hasNext());
70: }
71: }
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