qt-everywhere-src-5.14.1/qtquickcontrols/examples/quickcontrols/controls/calendar/src/sqleventmodel.cpp

/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * Redistributions in binary form must reproduce the above copyright
**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of The Qt Company Ltd nor the names of its
**     contributors may be used to endorse or promote products derived
**     from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "sqleventmodel.h"

#include <QDebug>
#include <QFileInfo>
#include <QSqlError>
#include <QSqlQuery>

SqlEventModel::SqlEventModel()
{
    createConnection();
}

QList<QObject*> SqlEventModel::eventsForDate(const QDate &date)
{
    const QString queryStr = QString::fromLatin1("SELECT * FROM Event WHERE '%1' >= startDate AND '%1' <= endDate").arg(date.toString("yyyy-MM-dd"));
    QSqlQuery query(queryStr);
    if (!query.exec())
        qFatal("Query failed");

    QList<QObject*> events;
    while (query.next()) {
        Event *event = new Event(this);
        event->setName(query.value("name").toString());

        QDateTime startDate;
        startDate.setDate(query.value("startDate").toDate());
        startDate.setTime(QTime(0, 0).addSecs(query.value("startTime").toInt()));
        event->setStartDate(startDate);

        QDateTime endDate;
        endDate.setDate(query.value("endDate").toDate());
        endDate.setTime(QTime(0, 0).addSecs(query.value("endTime").toInt()));
        event->setEndDate(endDate);

        events.append(event);
    }

    return events;
}

/*
    Defines a helper function to open a connection to an
    in-memory SQLITE database and to create a test table.
*/
void SqlEventModel::createConnection()
{
    QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");
    db.setDatabaseName(":memory:");
    if (!db.open()) {
        qFatal("Cannot open database");
        return;
    }

    QSqlQuery query;
    // We store the time as seconds because it's easier to query.
    query.exec("create table Event (name TEXT, startDate DATE, startTime INT, endDate DATE, endTime INT)");
    query.exec("insert into Event values('Grocery shopping', '2014-01-01', 36000, '2014-01-01', 39600)");
    query.exec("insert into Event values('Ice skating', '2014-01-01', 57600, '2014-01-01', 61200)");
    query.exec("insert into Event values('Doctor''s appointment', '2014-01-15', 57600, '2014-01-15', 63000)");
    query.exec("insert into Event values('Conference', '2014-01-24', 32400, '2014-01-28', 61200)");

    return;
}