SQLiteInterface.h

/*
 * Copyright (c) 2015 Pavel Vainerman.
 *
 * This program 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, version 2.1.
 *
 * This program 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 Lesser Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
// --------------------------------------------------------------------------
//----------------------------------------------------------------------------
#ifndef SQLiteInterface_H_
#define SQLiteInterface_H_
// ---------------------------------------------------------------------------
#include <string>
#include <deque>
#include <vector>
#include <iostream>
#include <sqlite3.h>
#include "PassiveTimer.h"
#include <DBInterface.h>
// -------------------------------------------------------------------------
namespace uniset
{
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
// Памятка:
// Включение режима для журнала - "вести в памяти" (чтобы поберечь CompactFlash)
// PRAGMA journal_mode = MEMORY
// При этом конечно есть риск потерять данные при выключении..
// ----------------------------------------------------------------------------
class SQLiteInterface:
    public DBInterface
{
    public:

        SQLiteInterface();
        ~SQLiteInterface();

        virtual bool connect( const std::string& param ) override;
        bool connect( const std::string& dbfile, bool create );
        virtual bool close() override;
        virtual bool isConnection() const override;
        virtual bool ping() const override;

        void setOperationTimeout( timeout_t msec );
        inline timeout_t getOperationTimeout()
        {
            return opTimeout;
        }

        inline void setOperationCheckPause( timeout_t msec )
        {
            opCheckPause = msec;
        }
        inline timeout_t getOperationCheckPause()
        {
            return opCheckPause;
        }

        virtual DBResult query( const std::string& q ) override;
        virtual const std::string lastQuery() override;

        virtual bool insert( const std::string& q ) override;
        virtual double insert_id() override;

        virtual const std::string error() override;

    protected:

        bool wait( sqlite3_stmt* stmt, int result );
        static bool checkResult( int rc );

    private:

        void makeResult(DBResult& dbres, sqlite3_stmt* s, bool finalize = true );
        sqlite3* db;
        // sqlite3_stmt* curStmt;

        std::string lastQ;
        std::string lastE;
        bool queryok;    // успешность текущего запроса
        bool connected;

        timeout_t opTimeout;
        timeout_t opCheckPause;
};
// ----------------------------------------------------------------------------------
} // end of namespace uniset
// ----------------------------------------------------------------------------
#endif
// ----------------------------------------------------------------------------------