DatabaseConnectionHandler.hpp

#ifndef H_EXTENSIONS_CUTEHMI_SHAREDDATABASE_0_INCLUDE_CUTEHMI_SHAREDDATABASE_INTERNAL_DATABASECONNECTIONHANDLER_HPP
#define H_EXTENSIONS_CUTEHMI_SHAREDDATABASE_0_INCLUDE_CUTEHMI_SHAREDDATABASE_INTERNAL_DATABASECONNECTIONHANDLER_HPP
 
#include "common.hpp"
#include "DatabaseConfig.hpp"
 
#include <cutehmi/InplaceError.hpp>
 
#include <QObject>
#include <QBasicTimer>
#include <QSqlDatabase>
 
 
namespace cutehmi {
namespace shareddatabase {
namespace internal {
 
class CUTEHMI_SHAREDDATABASE_PRIVATE DatabaseConnectionHandler:
    public QObject
{
        Q_OBJECT
 
        typedef QObject Parent;
 
    public:
        static constexpr int INITIAL_MONITOR_INTERVAL = 1000;
 
        static constexpr int INITIAL_MAINTENANCE_INTERVAL = 1000 * 60 * 60 * 12;
 
        DatabaseConnectionHandler(DatabaseConfig config, QObject * parent = nullptr);
 
    public slots:
        void connect();
 
        void disconnect();
 
    signals:
        void connected(QString connectionName);
 
        void disconnected(QString connectionName);
 
        void errored(cutehmi::InplaceError error);
 
    protected:
        void timerEvent(QTimerEvent * event) override;
 
    private slots:
        void printError(cutehmi::InplaceError error);
 
    private:
        struct Members
        {
            int monitorInterval;
            int maintenanceCount;
            DatabaseConfig config;
            QBasicTimer monitorTimer;
            QSqlDatabase db;
            QString connectionName;
 
            Members(DatabaseConfig p_config):
                monitorInterval(INITIAL_MONITOR_INTERVAL),
                maintenanceCount(0),
                config(p_config)
            {
            }
        };
 
        MPtr<Members> m;
};
 
}
}
}
 
#endif
 
//(c)C: Copyright © 2020, Michał Policht <michal@policht.pl>. All rights reserved.
//(c)C: This file is a part of CuteHMI.
//(c)C: CuteHMI is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
//(c)C: CuteHMI is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more details.
//(c)C: You should have received a copy of the GNU Lesser General Public License along with CuteHMI.  If not, see <https://www.gnu.org/licenses/>.