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the begginning
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david hill
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utils/funcexp/func_timediff.cpp
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222
utils/funcexp/func_timediff.cpp
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/* 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_timediff.cpp 3696 2013-04-05 18:07:21Z dhall $
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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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#include "errorcodes.h"
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#include "idberrorinfo.h"
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#include "errorids.h"
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using namespace logging;
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namespace funcexp
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{
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namespace helpers
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{
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const string timediff( int64_t time1, int64_t time2)
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{
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long long seconds;
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long long microseconds;
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int l_sign = 1;
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if ( (time1 < 0 && time2 >= 0) ||
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(time2 < 0 && time1 >= 0) )
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l_sign = -l_sign;
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if ( time1 > time2 )
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helpers::calc_time_diff(time1, time2, l_sign, &seconds, µseconds);
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else
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helpers::calc_time_diff(time2, time1, l_sign, &seconds, µseconds);
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long t_seconds;
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int hour= seconds/3600L;
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t_seconds= seconds%3600L;
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int minute= t_seconds/60L;
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int second= t_seconds%60L;
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// Bug 5099: Standardize to mysql behavior. No timediff may be > 838:59:59
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if (hour > 838)
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{
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hour = 838;
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minute = 59;
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second = 59;
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}
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int sign = 0;
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if ( time1 < time2 )
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sign = 1;
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char buf[256];
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char* ptr = buf;
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string time3;
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if ( microseconds == 0 )
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sprintf (ptr, "%s%02d:%02d:%02d", sign ? "-" : "", hour, minute, second);
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else
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sprintf (ptr, "%s%02d:%02d:%02d:%06lld", sign ? "-" : "",hour, minute, second, microseconds);
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time3 = ptr;
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return time3;
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}
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}
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CalpontSystemCatalog::ColType Func_timediff::operationType( FunctionParm& fp, CalpontSystemCatalog::ColType& resultType )
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{
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return resultType;
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}
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string Func_timediff::getStrVal(rowgroup::Row& row,
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FunctionParm& parm,
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bool& isNull,
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CalpontSystemCatalog::ColType& ct)
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{
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int16_t type1 = parm[0]->data()->resultType().colDataType;
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int16_t type2 = parm[1]->data()->resultType().colDataType;
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int64_t val1 = -1, val2 = -1;
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bool isDate1 = false, isDate2 = false;
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switch (type1)
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{
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case execplan::CalpontSystemCatalog::DATE:
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val1 = parm[0]->data()->getDatetimeIntVal(row, isNull);
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isDate1 = true;
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break;
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case execplan::CalpontSystemCatalog::DATETIME:
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val1 = parm[0]->data()->getDatetimeIntVal(row, isNull);
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break;
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case execplan::CalpontSystemCatalog::VARCHAR:
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case execplan::CalpontSystemCatalog::CHAR:
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val1 = dataconvert::DataConvert::stringToDatetime(parm[0]->data()->getStrVal(row, isNull), &isDate1);
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break;
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case execplan::CalpontSystemCatalog::BIGINT:
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case execplan::CalpontSystemCatalog::INT:
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case execplan::CalpontSystemCatalog::MEDINT:
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case execplan::CalpontSystemCatalog::TINYINT:
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case execplan::CalpontSystemCatalog::SMALLINT:
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val1 = dataconvert::DataConvert::intToDatetime(parm[0]->data()->getIntVal(row, isNull), &isDate1);
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break;
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case execplan::CalpontSystemCatalog::DECIMAL:
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if (parm[0]->data()->resultType().scale != 0)
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{
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isNull = true;
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break;
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}
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else
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{
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val1 = dataconvert::DataConvert::intToDatetime(parm[0]->data()->getIntVal(row, isNull), &isDate1);
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break;
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}
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default:
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isNull = true;
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}
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switch (type2)
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{
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case execplan::CalpontSystemCatalog::DATE:
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val2 = parm[1]->data()->getDatetimeIntVal(row, isNull);
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isDate2 = true;
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break;
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case execplan::CalpontSystemCatalog::DATETIME:
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val2 = parm[1]->data()->getDatetimeIntVal(row, isNull);
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break;
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case execplan::CalpontSystemCatalog::VARCHAR:
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case execplan::CalpontSystemCatalog::CHAR:
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val2 = dataconvert::DataConvert::stringToDatetime(parm[1]->data()->getStrVal(row, isNull), &isDate2);
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break;
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case execplan::CalpontSystemCatalog::BIGINT:
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case execplan::CalpontSystemCatalog::INT:
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case execplan::CalpontSystemCatalog::MEDINT:
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case execplan::CalpontSystemCatalog::TINYINT:
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case execplan::CalpontSystemCatalog::SMALLINT:
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val2 = dataconvert::DataConvert::intToDatetime(parm[1]->data()->getIntVal(row, isNull), &isDate2);
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break;
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case execplan::CalpontSystemCatalog::DECIMAL:
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if (parm[1]->data()->resultType().scale != 0)
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{
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isNull = true;
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break;
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}
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else
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{
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val2 = dataconvert::DataConvert::intToDatetime(parm[1]->data()->getIntVal(row, isNull), &isDate2);
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break;
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}
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default:
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isNull = true;
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}
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if (isNull || val1 == -1 || val2 == -1)
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{
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isNull = true;
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return "";
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}
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// both date format or both datetime format
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if ((isDate1 && isDate2) || (!isDate1 && !isDate2))
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return helpers::timediff( val1, val2);
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isNull = true;
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return "";
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}
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int64_t Func_timediff::getDatetimeIntVal(rowgroup::Row& row,
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FunctionParm& parm,
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bool& isNull,
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CalpontSystemCatalog::ColType& ct)
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{
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return dataconvert::DataConvert::datetimeToInt(getStrVal(row, parm, isNull, ct));
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}
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int64_t Func_timediff::getIntVal(rowgroup::Row& row,
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FunctionParm& parm,
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bool& isNull,
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CalpontSystemCatalog::ColType& ct)
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{
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// @bug 3585
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//return dataconvert::DataConvert::datetimeToInt(getStrVal(row, parm, isNull, ct));
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return strtoll(getStrVal(row, parm, isNull, ct).c_str(), 0, 10);
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}
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double Func_timediff::getDoubleVal(rowgroup::Row& row,
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FunctionParm& fp,
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bool& isNull,
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execplan::CalpontSystemCatalog::ColType& op_ct)
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{
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// @bug 3585
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//return (double)dataconvert::DataConvert::datetimeToInt(getStrVal(row, fp, isNull, op_ct));
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return atof(getStrVal(row, fp, isNull, op_ct).c_str());
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}
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} // namespace funcexp
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// vim:ts=4 sw=4:
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