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.performance;
22:
23: import com.db4o.*;
24: import com.db4o.config.*;
25: import com.db4o.query.*;
26: import com.db4o.test.*;
27:
28: public class IndexQueryingIsFast {
29:
30: public int _int;
31:
32: public String _string;
33:
34: public IndexQueryingIsFast() {
35:
36: }
37:
38: public IndexQueryingIsFast(int i, String str) {
39: _int = i;
40: _string = str;
41: }
42:
43: public void configure() {
44: ObjectClass oc = Db4o.configure().objectClass(this .getClass());
45: oc.objectField("_int").indexed(true);
46: oc.objectField("_string").indexed(true);
47: }
48:
49: public void store() {
50: Test.deleteAllInstances(this );
51: for (int i = 0; i < 5000; i++) {
52: Test.store(new IndexQueryingIsFast(i, "" + i));
53: }
54: }
55:
56: public void _test() {
57:
58: Query q = Test.query();
59: q.constrain(IndexQueryingIsFast.class);
60: q.descend("_int").constrain(new Integer(3));
61: check(q);
62:
63: q = Test.query();
64: q.constrain(IndexQueryingIsFast.class);
65: q.descend("_string").constrain("3");
66: check(q);
67:
68: }
69:
70: private void check(Query q) {
71: long start = System.currentTimeMillis();
72: ObjectSet objectSet = q.execute();
73: long stop = System.currentTimeMillis();
74: Test.ensure(objectSet.size() == 1);
75: IndexQueryingIsFast iqiF = (IndexQueryingIsFast) objectSet
76: .next();
77: Test.ensure(iqiF._int == 3);
78: long duration = stop - start;
79: long max = Test.isClientServer() ? 250 : 50;
80: Test.ensure(duration < max);
81: if (duration >= max) {
82: System.out.println("Indexed query too slow: " + duration
83: + "ms");
84: }
85:
86: }
87:
88: }
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