mariadb-columnstore-engine/utils/funcexp/func_quarter.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. */

/****************************************************************************
* $Id: func_quarter.cpp 3495 2013-01-21 14:09:51Z rdempsey $
*
*
****************************************************************************/

#include <cstdlib>
#include <string>
#include <sstream>
using namespace std;

#include "functor_int.h"
#include "funchelpers.h"
#include "functioncolumn.h"
#include "rowgroup.h"
using namespace execplan;

#include "dataconvert.h"

namespace funcexp
{

CalpontSystemCatalog::ColType Func_quarter::operationType( FunctionParm& fp, CalpontSystemCatalog::ColType& resultType )
{
    return resultType;
}


int64_t Func_quarter::getIntVal(rowgroup::Row& row,
                                FunctionParm& parm,
                                bool& isNull,
                                CalpontSystemCatalog::ColType& op_ct)
{
    // try to cast to date/datetime
    int64_t val = 0, month = 0;

    switch (parm[0]->data()->resultType().colDataType)
    {
        case CalpontSystemCatalog::DATE:
            val = parm[0]->data()->getIntVal(row, isNull);
            month = (val >> 12) & 0xf;
            break;

        case CalpontSystemCatalog::DATETIME:
            val = parm[0]->data()->getIntVal(row, isNull);
            month = (val >> 44) & 0xf;
            break;

        case CalpontSystemCatalog::CHAR:
        case CalpontSystemCatalog::TEXT:
        case CalpontSystemCatalog::VARCHAR:
        {
            val = dataconvert::DataConvert::stringToDatetime(parm[0]->data()->getStrVal(row, isNull));

            if (val == -1)
                isNull = true;
            else
                month = (val >> 44) & 0xf;

            break;
        }

        case CalpontSystemCatalog::BIGINT:
        case CalpontSystemCatalog::MEDINT:
        case CalpontSystemCatalog::SMALLINT:
        case CalpontSystemCatalog::TINYINT:
        case CalpontSystemCatalog::INT:
        {
            val = dataconvert::DataConvert::intToDatetime(parm[0]->data()->getIntVal(row, isNull));

            if (val == -1)
                isNull = true;
            else
                month = (val >> 44) & 0xf;

            break;
        }

        case CalpontSystemCatalog::DECIMAL:
        {
            if (parm[0]->data()->resultType().scale == 0)
            {
                val = dataconvert::DataConvert::intToDate(parm[0]->data()->getIntVal(row, isNull));

                if (val == -1)
                    isNull = true;
                else
                    month = (val >> 12) & 0xf;

                break;
            }
            else
            {
                isNull = true;
            }
        }

        default:
            isNull = true;
    }

    return (int64_t)((month + 2) / 3);
}


} // namespace funcexp
// vim:ts=4 sw=4: