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, int extra_sqlite_flags = 0 );
            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;
            bool lastQueryOK() const;
 
            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:
 
            DBResult makeResult( 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
// ----------------------------------------------------------------------------------