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.tuning;
22:
23: import com.db4o.*;
24: import com.db4o.query.*;
25: import com.db4o.test.*;
26:
27: /**
28: * Original performance on Carls machine with Skype on:
29: * Querying 10000 objects for member identity: 500ms
30: * @author root_rosenberger
31: *
32: */
33:
34: public class TuningMemberFieldQuery {
35:
36: static final int COUNT = 2;
37:
38: TMFMember member;
39:
40: public TuningMemberFieldQuery() {
41: }
42:
43: public TuningMemberFieldQuery(TMFMember member) {
44: this .member = member;
45: }
46:
47: public void configure() {
48: Db4o.configure().objectClass(this ).objectField("member")
49: .indexed(true);
50: Db4o.configure().objectClass(TMFMember.class).objectField(
51: "name").indexed(true);
52: }
53:
54: public void store() {
55: for (int i = 0; i < COUNT; i++) {
56: Test
57: .store(new TuningMemberFieldQuery(new TMFMember(""
58: + i)));
59: }
60: }
61:
62: public void test() {
63: Query q = Test.query();
64: q.constrain(TuningMemberFieldQuery.class);
65:
66: q.descend("member").descend("name").constrain("1");
67:
68: long start = System.currentTimeMillis();
69: ObjectSet objectSet = q.execute();
70:
71: long stop = System.currentTimeMillis();
72:
73: Test.ensure(objectSet.size() == 1);
74: TuningMemberFieldQuery tmf = (TuningMemberFieldQuery) objectSet
75: .next();
76: Test.ensure(tmf.member.name.equals("1"));
77:
78: long duration = stop - start;
79: System.out.println("Querying " + COUNT
80: + " objects for member identity: " + duration + "ms");
81: }
82:
83: public static class TMFMember {
84:
85: String name;
86:
87: public TMFMember() {
88: }
89:
90: public TMFMember(String name) {
91: this.name = name;
92: }
93:
94: }
95:
96: }
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