/****************************************************************************+
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**+
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** Copyright (C) 2010 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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** $QT_END_LICENSE$+
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**+
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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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+
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#include <QtSql>+
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+
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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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+
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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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+
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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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+
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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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+
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    if (!db.open())+
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        return db.lastError();+
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+
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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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+
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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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+
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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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+
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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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+
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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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+
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    return QSqlError();+
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}+
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+
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#endif+
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