mariadb-columnstore-engine/utils/common/nullvaluemanip.cpp

/* Copyright (C) 2014 InfiniDB, Inc.

   This program is free software; you can redistribute it and/or
   modify it under the terms of the GNU General Public License
   as published by the Free Software Foundation; version 2 of
   the License.

   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 General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
   MA 02110-1301, USA. */


#include "nullvaluemanip.h"
#include <sstream>

using namespace std;
using namespace execplan;

namespace utils
{

uint64_t getNullValue(CalpontSystemCatalog::ColDataType t, uint32_t colWidth)
{
    switch (t)
    {
        case CalpontSystemCatalog::TINYINT:
            return joblist::TINYINTNULL;

        case CalpontSystemCatalog::SMALLINT:
            return joblist::SMALLINTNULL;

        case CalpontSystemCatalog::MEDINT:
        case CalpontSystemCatalog::INT:
            return joblist::INTNULL;

        case CalpontSystemCatalog::FLOAT:
        case CalpontSystemCatalog::UFLOAT:
            return joblist::FLOATNULL;

        case CalpontSystemCatalog::DATE:
            return joblist::DATENULL;

        case CalpontSystemCatalog::BIGINT:
            return joblist::BIGINTNULL;

        case CalpontSystemCatalog::DOUBLE:
        case CalpontSystemCatalog::UDOUBLE:
            return joblist::DOUBLENULL;

        case CalpontSystemCatalog::DATETIME:
            return joblist::DATETIMENULL;

        case CalpontSystemCatalog::CHAR:
        case CalpontSystemCatalog::VARCHAR:
        case CalpontSystemCatalog::STRINT:
        {
            switch (colWidth)
            {
                case 1:
                    return joblist::CHAR1NULL;

                case 2:
                    return joblist::CHAR2NULL;

                case 3:
                case 4:
                    return joblist::CHAR4NULL;

                case 5:
                case 6:
                case 7:
                case 8:
                    return joblist::CHAR8NULL;

                default:
                    throw logic_error("getNullValue() Can't return the NULL string");
            }

            break;
        }

        case CalpontSystemCatalog::DECIMAL:
        case CalpontSystemCatalog::UDECIMAL:
        {
            switch (colWidth)
            {
                case 1 :
                    return joblist::TINYINTNULL;

                case 2 :
                    return joblist::SMALLINTNULL;

                case 4 :
                    return joblist::INTNULL;

                default:
                    return joblist::BIGINTNULL;
            }

            break;
        }

        case CalpontSystemCatalog::UTINYINT:
            return joblist::UTINYINTNULL;

        case CalpontSystemCatalog::USMALLINT:
            return joblist::USMALLINTNULL;

        case CalpontSystemCatalog::UMEDINT:
        case CalpontSystemCatalog::UINT:
            return joblist::UINTNULL;

        case CalpontSystemCatalog::UBIGINT:
            return joblist::UBIGINTNULL;

        case CalpontSystemCatalog::LONGDOUBLE:
            return -1;  // no NULL value for long double yet, this is a nan.

        case CalpontSystemCatalog::VARBINARY:
        default:
            ostringstream os;
            os << "getNullValue(): got bad column type (" << t <<
               ").  Width=" << colWidth << endl;
            throw logic_error(os.str());
    }

}

int64_t getSignedNullValue(CalpontSystemCatalog::ColDataType t, uint32_t colWidth)
{
    switch (t)
    {
        case CalpontSystemCatalog::TINYINT:
            return (int64_t) ((int8_t) joblist::TINYINTNULL);

        case CalpontSystemCatalog::SMALLINT:
            return (int64_t) ((int16_t) joblist::SMALLINTNULL);

        case CalpontSystemCatalog::MEDINT:
        case CalpontSystemCatalog::INT:
            return (int64_t) ((int32_t) joblist::INTNULL);

        case CalpontSystemCatalog::FLOAT:
        case CalpontSystemCatalog::UFLOAT:
            return (int64_t) ((int32_t) joblist::FLOATNULL);

        case CalpontSystemCatalog::DATE:
            return (int64_t) ((int32_t) joblist::DATENULL);

        case CalpontSystemCatalog::BIGINT:
            return joblist::BIGINTNULL;

        case CalpontSystemCatalog::DOUBLE:
        case CalpontSystemCatalog::UDOUBLE:
            return joblist::DOUBLENULL;

        case CalpontSystemCatalog::DATETIME:
            return joblist::DATETIMENULL;

        case CalpontSystemCatalog::CHAR:
        case CalpontSystemCatalog::VARCHAR:
        case CalpontSystemCatalog::STRINT:
        {
            switch (colWidth)
            {
                case 1:
                    return (int64_t) ((int8_t) joblist::CHAR1NULL);

                case 2:
                    return (int64_t) ((int16_t) joblist::CHAR2NULL);

                case 3:
                case 4:
                    return (int64_t) ((int32_t) joblist::CHAR4NULL);

                case 5:
                case 6:
                case 7:
                case 8:
                    return joblist::CHAR8NULL;

                default:
                    throw logic_error("getSignedNullValue() Can't return the NULL string");
            }

            break;
        }

        case CalpontSystemCatalog::DECIMAL:
        case CalpontSystemCatalog::UDECIMAL:
        {
            switch (colWidth)
            {
                case 1 :
                    return (int64_t) ((int8_t)  joblist::TINYINTNULL);

                case 2 :
                    return (int64_t) ((int16_t) joblist::SMALLINTNULL);

                case 4 :
                    return (int64_t) ((int32_t) joblist::INTNULL);

                default:
                    return joblist::BIGINTNULL;
            }

            break;
        }

        case CalpontSystemCatalog::UTINYINT:
            return (int64_t) ((int8_t) joblist::UTINYINTNULL);

        case CalpontSystemCatalog::USMALLINT:
            return (int64_t) ((int16_t) joblist::USMALLINTNULL);

        case CalpontSystemCatalog::UMEDINT:
        case CalpontSystemCatalog::UINT:
            return (int64_t) ((int32_t) joblist::UINTNULL);

        case CalpontSystemCatalog::UBIGINT:
            return (int64_t)joblist::UBIGINTNULL;

        case CalpontSystemCatalog::LONGDOUBLE:
            return -1;  // no NULL value for long double yet, this is a nan.

        case CalpontSystemCatalog::VARBINARY:
        default:
            ostringstream os;
            os << "getSignedNullValue(): got bad column type (" << t <<
               ").  Width=" << colWidth << endl;
            throw logic_error(os.str());
    }

}


}