source: trunk/examples/sql/masterdetail/database.h

Last change on this file was 846, checked in by Dmitry A. Kuminov, 14 years ago

trunk: Merged in qt 4.7.2 sources from branches/vendor/nokia/qt.

File size: 4.1 KB
Line 
1/****************************************************************************
2**
3** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
4** All rights reserved.
5** Contact: Nokia Corporation ([email protected])
6**
7** This file is part of the examples of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:BSD$
10** You may use this file under the terms of the BSD license as follows:
11**
12** "Redistribution and use in source and binary forms, with or without
13** modification, are permitted provided that the following conditions are
14** met:
15** * Redistributions of source code must retain the above copyright
16** notice, this list of conditions and the following disclaimer.
17** * Redistributions in binary form must reproduce the above copyright
18** notice, this list of conditions and the following disclaimer in
19** the documentation and/or other materials provided with the
20** distribution.
21** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
22** the names of its contributors may be used to endorse or promote
23** products derived from this software without specific prior written
24** permission.
25**
26** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
27** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
28** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
29** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
30** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
31** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
32** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
33** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
34** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
35** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
36** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
37** $QT_END_LICENSE$
38**
39****************************************************************************/
40
41#ifndef DATABASE_H
42#define DATABASE_H
43
44#include <QMessageBox>
45#include <QSqlDatabase>
46#include <QSqlError>
47#include <QSqlQuery>
48
49static bool createConnection()
50{
51 QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");
52 db.setDatabaseName(":memory:");
53 if (!db.open()) {
54 QMessageBox::critical(0, qApp->tr("Cannot open database"),
55 qApp->tr("Unable to establish a database connection.\n"
56 "This example needs SQLite support. Please read "
57 "the Qt SQL driver documentation for information how "
58 "to build it.\n\n"
59 "Click Cancel to exit."), QMessageBox::Cancel);
60 return false;
61 }
62
63 QSqlQuery query;
64
65 query.exec("create table artists (id int primary key, "
66 "artist varchar(40), "
67 "albumcount int)");
68
69 query.exec("insert into artists values(0, '<all>', 0)");
70 query.exec("insert into artists values(1, 'Ane Brun', 2)");
71 query.exec("insert into artists values(2, 'Thomas Dybdahl', 3)");
72 query.exec("insert into artists values(3, 'Kaizers Orchestra', 3)");
73
74 query.exec("create table albums (albumid int primary key, "
75 "title varchar(50), "
76 "artistid int, "
77 "year int)");
78
79 query.exec("insert into albums values(1, 'Spending Time With Morgan', 1, "
80 "2003)");
81 query.exec("insert into albums values(2, 'A Temporary Dive', 1, 2005)");
82 query.exec("insert into albums values(3, '...The Great October Sound', 2, "
83 "2002)");
84 query.exec("insert into albums values(4, 'Stray Dogs', 2, 2003)");
85 query.exec("insert into albums values(5, "
86 "'One day you`ll dance for me, New York City', 2, 2004)");
87 query.exec("insert into albums values(6, 'Ompa Til Du D\xf8r', 3, 2001)");
88 query.exec("insert into albums values(7, 'Evig Pint', 3, 2002)");
89 query.exec("insert into albums values(8, 'Maestro', 3, 2005)");
90
91 return true;
92}
93
94#endif
95
96
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