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    Copyright (C) 2011-2013 Klarälvdalens Datakonsult AB,
        a KDAB Group company, info@kdab.net,
        author Andras Mantia <andras.mantia@kdab.com>
    This library is free software; you can redistribute it and/or modify it
    under the terms of the GNU Library General Public License as published by
    the Free Software Foundation; either version 2 of the License, or (at your
    option) any later version.
    This library 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 Library General Public
    License for more details.
    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to the
    Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
    02110-1301, USA.
#ifndef SQLQUERYMANAGER_H
#define SQLQUERYMANAGER_H
#include "sqlate_export.h"
#include <QList>
class SqlMonitor;
class QSqlDatabase;
class SqlQuery;
 * @brief Keeps track of queries and handles unexpected database disconnections.
class SQLATE_EXPORT SqlQueryManager
     * @brief Get an instance to the singleton object.
     * @return SqlQueryManager*
    static SqlQueryManager* instance();
     * @brief Check if the database connection is still alive. If it is not, show a warning and offer
     * the user to retry the SQL command or abort it. Abort aborts the whole application.
     * Note that using this function might NOT detect the disconnection all the time, sometimes
     * it detects only if there was a query run that failed. It is advised to call the function
     * before executing/preparing a query or running other SQL commands and run once more
     * if the command fails to test if the error was because the database connection is dropped.
     * When SqlQuery or SqlTransaction is used there is no need to call the method,
     * they do it themselves.
    void checkDbIsAlive( QSqlDatabase& db );
    void registerQuery(SqlQuery* query);
    void unregisterQuery(SqlQuery* query);
    void registerMonitor(SqlMonitor *monitor);
    void unregisterMonitor(SqlMonitor *monitor);
    int  queryCount() const;
    int monitorCount() const;
    void printQueries() const;
    void printMonitors() const;
    ~SqlQueryManager();
    SqlQueryManager();
    static SqlQueryManager*  s_instance;
    QList<SqlQuery*> m_queries; ///<the list of stored queries
    QList<SqlMonitor*> m_monitors; ///<the list of stored notification monitor s

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