126 lines
4.8 KiB
C
126 lines
4.8 KiB
C
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/****************************************************************************
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**
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the demonstration applications of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef INITDB_H
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#define INITDB_H
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#include <QtSql>
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void addBook(QSqlQuery &q, const QString &title, int year, const QVariant &authorId,
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const QVariant &genreId, int rating)
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{
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q.addBindValue(title);
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q.addBindValue(year);
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q.addBindValue(authorId);
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q.addBindValue(genreId);
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q.addBindValue(rating);
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q.exec();
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}
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QVariant addGenre(QSqlQuery &q, const QString &name)
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{
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q.addBindValue(name);
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q.exec();
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return q.lastInsertId();
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}
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QVariant addAuthor(QSqlQuery &q, const QString &name, const QDate &birthdate)
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{
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q.addBindValue(name);
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q.addBindValue(birthdate);
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q.exec();
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return q.lastInsertId();
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}
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QSqlError initDb()
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{
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QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");
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db.setDatabaseName(":memory:");
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if (!db.open())
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return db.lastError();
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QStringList tables = db.tables();
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if (tables.contains("books", Qt::CaseInsensitive)
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&& tables.contains("authors", Qt::CaseInsensitive))
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return QSqlError();
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QSqlQuery q;
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if (!q.exec(QLatin1String("create table books(id integer primary key, title varchar, author integer, genre integer, year integer, rating integer)")))
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return q.lastError();
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if (!q.exec(QLatin1String("create table authors(id integer primary key, name varchar, birthdate date)")))
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return q.lastError();
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if (!q.exec(QLatin1String("create table genres(id integer primary key, name varchar)")))
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return q.lastError();
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if (!q.prepare(QLatin1String("insert into authors(name, birthdate) values(?, ?)")))
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return q.lastError();
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QVariant asimovId = addAuthor(q, QLatin1String("Isaac Asimov"), QDate(1920, 2, 1));
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QVariant greeneId = addAuthor(q, QLatin1String("Graham Greene"), QDate(1904, 10, 2));
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QVariant pratchettId = addAuthor(q, QLatin1String("Terry Pratchett"), QDate(1948, 4, 28));
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if (!q.prepare(QLatin1String("insert into genres(name) values(?)")))
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return q.lastError();
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QVariant sfiction = addGenre(q, QLatin1String("Science Fiction"));
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QVariant fiction = addGenre(q, QLatin1String("Fiction"));
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QVariant fantasy = addGenre(q, QLatin1String("Fantasy"));
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if (!q.prepare(QLatin1String("insert into books(title, year, author, genre, rating) values(?, ?, ?, ?, ?)")))
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return q.lastError();
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addBook(q, QLatin1String("Foundation"), 1951, asimovId, sfiction, 3);
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addBook(q, QLatin1String("Foundation and Empire"), 1952, asimovId, sfiction, 4);
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addBook(q, QLatin1String("Second Foundation"), 1953, asimovId, sfiction, 3);
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addBook(q, QLatin1String("Foundation's Edge"), 1982, asimovId, sfiction, 3);
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addBook(q, QLatin1String("Foundation and Earth"), 1986, asimovId, sfiction, 4);
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addBook(q, QLatin1String("Prelude to Foundation"), 1988, asimovId, sfiction, 3);
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addBook(q, QLatin1String("Forward the Foundation"), 1993, asimovId, sfiction, 3);
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addBook(q, QLatin1String("The Power and the Glory"), 1940, greeneId, fiction, 4);
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addBook(q, QLatin1String("The Third Man"), 1950, greeneId, fiction, 5);
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addBook(q, QLatin1String("Our Man in Havana"), 1958, greeneId, fiction, 4);
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addBook(q, QLatin1String("Guards! Guards!"), 1989, pratchettId, fantasy, 3);
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addBook(q, QLatin1String("Night Watch"), 2002, pratchettId, fantasy, 3);
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addBook(q, QLatin1String("Going Postal"), 2004, pratchettId, fantasy, 3);
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return QSqlError();
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}
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#endif
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