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83 lines
2.6 KiB
C++
83 lines
2.6 KiB
C++
/* Copyright (C) 2014 InfiniDB, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; version 2 of
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the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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/****************************************************************************
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* $Id: func_from_days.cpp 3921 2013-06-19 18:59:56Z bwilkinson $
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*
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*
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****************************************************************************/
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#include <cstdlib>
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#include <string>
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#include <sstream>
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using namespace std;
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#include "functor_dtm.h"
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#include "funchelpers.h"
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#include "functioncolumn.h"
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#include "rowgroup.h"
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using namespace execplan;
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#include "dataconvert.h"
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using namespace dataconvert;
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namespace funcexp
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{
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CalpontSystemCatalog::ColType Func_from_days::operationType(FunctionParm& /*fp*/,
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CalpontSystemCatalog::ColType& resultType)
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{
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return resultType;
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}
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int64_t Func_from_days::getIntVal(rowgroup::Row& row, FunctionParm& parm, bool& isNull,
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CalpontSystemCatalog::ColType& op_ct)
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{
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return getDatetimeIntVal(row, parm, isNull, op_ct);
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}
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string Func_from_days::getStrVal(rowgroup::Row& row, FunctionParm& parm, bool& isNull,
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CalpontSystemCatalog::ColType& ct)
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{
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return intToString(getIntVal(row, parm, isNull, ct));
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}
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int32_t Func_from_days::getDateIntVal(rowgroup::Row& row, FunctionParm& parm, bool& isNull,
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CalpontSystemCatalog::ColType& ct)
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{
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return (((getDatetimeIntVal(row, parm, isNull, ct) >> 32) & 0xFFFFFFC0) | 0x3E);
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}
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int64_t Func_from_days::getDatetimeIntVal(rowgroup::Row& row, FunctionParm& parm, bool& isNull,
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CalpontSystemCatalog::ColType& /*ct*/)
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{
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double val1 = parm[0]->data()->getDoubleVal(row, isNull);
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int64_t daynr = (int64_t)(val1 > 0 ? val1 + 0.5 : val1 - 0.5);
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DateTime aDaytime;
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helpers::get_date_from_mysql_daynr(daynr, aDaytime);
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// to be safe
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aDaytime.hour = 0;
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aDaytime.minute = 0;
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aDaytime.second = 0;
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aDaytime.msecond = 0;
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return (*(reinterpret_cast<uint64_t*>(&aDaytime)));
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}
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} // namespace funcexp
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