Home · All Namespaces · All Classes · Main Classes · Grouped Classes · Modules · Functions

database.h Example File
sql/masterdetail/database.h

 /****************************************************************************
 **
 ** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
 ** Contact: Qt Software Information (qt-info@nokia.com)
 **
 ** This file is part of the example classes of the Qt Toolkit.
 **
 ** Commercial Usage
 ** Licensees holding valid Qt Commercial licenses may use this file in
 ** accordance with the Qt Commercial License Agreement provided with the
 ** Software or, alternatively, in accordance with the terms contained in
 ** a written agreement between you and Nokia.
 **
 **
 ** GNU General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU
 ** General Public License versions 2.0 or 3.0 as published by the Free
 ** Software Foundation and appearing in the file LICENSE.GPL included in
 ** the packaging of this file.  Please review the following information
 ** to ensure GNU General Public Licensing requirements will be met:
 ** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
 ** http://www.gnu.org/copyleft/gpl.html.  In addition, as a special
 ** exception, Nokia gives you certain additional rights. These rights
 ** are described in the Nokia Qt GPL Exception version 1.3, included in
 ** the file GPL_EXCEPTION.txt in this package.
 **
 ** Qt for Windows(R) Licensees
 ** As a special exception, Nokia, as the sole copyright holder for Qt
 ** Designer, grants users of the Qt/Eclipse Integration plug-in the
 ** right for the Qt/Eclipse Integration to link to functionality
 ** provided by Qt Designer and its related libraries.
 **
 ** If you are unsure which license is appropriate for your use, please
 ** contact the sales department at qt-sales@nokia.com.
 **
 ****************************************************************************/

 #ifndef DATABASE_H
 #define DATABASE_H

 #include <QMessageBox>
 #include <QSqlDatabase>
 #include <QSqlError>
 #include <QSqlQuery>

 static bool createConnection()
 {
     QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");
     db.setDatabaseName(":memory:");
     if (!db.open()) {
         QMessageBox::critical(0, qApp->tr("Cannot open database"),
             qApp->tr("Unable to establish a database connection.\n"
                      "This example needs SQLite support. Please read "
                      "the Qt SQL driver documentation for information how "
                      "to build it.\n\n"
                      "Click Cancel to exit."), QMessageBox::Cancel);
         return false;
     }

     QSqlQuery query;

     query.exec("create table artists (id int primary key, "
                                      "artist varchar(40), "
                                      "albumcount int)");

     query.exec("insert into artists values(0, '<all>', 0)");
     query.exec("insert into artists values(1, 'Ane Brun', 2)");
     query.exec("insert into artists values(2, 'Thomas Dybdahl', 3)");
     query.exec("insert into artists values(3, 'Kaizers Orchestra', 3)");

     query.exec("create table albums (albumid int primary key, "
                                      "title varchar(50), "
                                      "artistid int, "
                                      "year int)");

     query.exec("insert into albums values(1, 'Spending Time With Morgan', 1, "
                        "2003)");
     query.exec("insert into albums values(2, 'A Temporary Dive', 1, 2005)");
     query.exec("insert into albums values(3, '...The Great October Sound', 2, "
                        "2002)");
     query.exec("insert into albums values(4, 'Stray Dogs', 2, 2003)");
     query.exec("insert into albums values(5, "
         "'One day you`ll dance for me, New York City', 2, 2004)");
     query.exec("insert into albums values(6, 'Ompa Til Du D\xf8r', 3, 2001)");
     query.exec("insert into albums values(7, 'Evig Pint', 3, 2002)");
     query.exec("insert into albums values(8, 'Maestro', 3, 2005)");

     return true;
 }

 #endif


Copyright © 2008 Nokia Trademarks
Qt 4.4.3