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the begginning
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david hill
313
utils/funcexp/func_floor.cpp
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313
utils/funcexp/func_floor.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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// $Id: func_floor.cpp 3923 2013-06-19 21:43:06Z bwilkinson $
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#include <cstdlib>
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#include <iomanip>
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#include <string>
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using namespace std;
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#include "functor_real.h"
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#include "functioncolumn.h"
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using namespace execplan;
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#include "rowgroup.h"
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using namespace rowgroup;
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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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using namespace dataconvert;
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#include "funchelpers.h"
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namespace funcexp
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{
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CalpontSystemCatalog::ColType Func_floor::operationType(FunctionParm& fp, CalpontSystemCatalog::ColType& resultType)
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{
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return fp[0]->data()->resultType();
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}
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int64_t Func_floor::getIntVal(Row& row,
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FunctionParm& parm,
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bool& isNull,
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CalpontSystemCatalog::ColType& op_ct)
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{
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int64_t ret = 0;
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switch (op_ct.colDataType)
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{
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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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case execplan::CalpontSystemCatalog::DECIMAL:
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case execplan::CalpontSystemCatalog::UDECIMAL:
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{
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if (op_ct.scale == 0)
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{
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ret = parm[0]->data()->getIntVal(row, isNull);
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break;
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}
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IDB_Decimal decimal = parm[0]->data()->getDecimalVal(row, isNull);
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if (isNull)
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break;
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ret = decimal.value;
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// negative scale is not supported by CNX yet
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if (decimal.scale > 0)
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{
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if (decimal.scale >= 19)
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{
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std::ostringstream oss;
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oss << "floor: datatype of " << execplan::colDataTypeToString(op_ct.colDataType)
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<< " with scale " << (int) decimal.scale << " is beyond supported scale";
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throw logging::IDBExcept(oss.str(), ERR_DATATYPE_NOT_SUPPORT);
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}
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int64_t tmp = ret;
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ret /= helpers::powerOf10_c[decimal.scale];
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// Largest integer value not greater than X.
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if (tmp < 0 && tmp < ret)
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ret -= 1;
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}
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}
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break;
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case execplan::CalpontSystemCatalog::UBIGINT:
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case execplan::CalpontSystemCatalog::UINT:
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case execplan::CalpontSystemCatalog::UMEDINT:
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case execplan::CalpontSystemCatalog::UTINYINT:
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case execplan::CalpontSystemCatalog::USMALLINT:
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{
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ret = (int64_t)parm[0]->data()->getUintVal(row, isNull);
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}
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break;
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case execplan::CalpontSystemCatalog::DOUBLE:
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case execplan::CalpontSystemCatalog::UDOUBLE:
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case execplan::CalpontSystemCatalog::FLOAT:
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case execplan::CalpontSystemCatalog::UFLOAT:
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{
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ret = (int64_t) floor(parm[0]->data()->getDoubleVal(row, isNull));
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}
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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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{
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const string& str = parm[0]->data()->getStrVal(row, isNull);
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if (!isNull)
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ret = (int64_t) floor(strtod(str.c_str(), 0));
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}
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break;
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case execplan::CalpontSystemCatalog::DATE:
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{
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string str = DataConvert::dateToString1(parm[0]->data()->getDateIntVal(row, isNull));
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if (!isNull)
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ret = atoll(str.c_str());
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}
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break;
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case execplan::CalpontSystemCatalog::DATETIME:
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{
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string str =
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DataConvert::datetimeToString1(parm[0]->data()->getDatetimeIntVal(row, isNull));
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// strip off micro seconds
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str = str.substr(0,14);
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if (!isNull)
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ret = atoll(str.c_str());
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}
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break;
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default:
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{
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std::ostringstream oss;
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oss << "floor: datatype of " << execplan::colDataTypeToString(op_ct.colDataType);
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throw logging::IDBExcept(oss.str(), ERR_DATATYPE_NOT_SUPPORT);
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}
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}
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return ret;
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}
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uint64_t Func_floor::getUintVal(Row& row,
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FunctionParm& parm,
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bool& isNull,
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CalpontSystemCatalog::ColType& op_ct)
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{
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int64_t ret = 0;
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switch (op_ct.colDataType)
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{
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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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case execplan::CalpontSystemCatalog::DECIMAL:
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case execplan::CalpontSystemCatalog::UDECIMAL:
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{
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ret = parm[0]->data()->getIntVal(row, isNull);
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}
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break;
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case execplan::CalpontSystemCatalog::UBIGINT:
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case execplan::CalpontSystemCatalog::UINT:
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case execplan::CalpontSystemCatalog::UMEDINT:
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case execplan::CalpontSystemCatalog::UTINYINT:
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case execplan::CalpontSystemCatalog::USMALLINT:
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{
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ret = (int64_t)parm[0]->data()->getUintVal(row, isNull);
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}
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break;
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case execplan::CalpontSystemCatalog::DOUBLE:
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case execplan::CalpontSystemCatalog::UDOUBLE:
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case execplan::CalpontSystemCatalog::FLOAT:
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case execplan::CalpontSystemCatalog::UFLOAT:
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{
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ret = (uint64_t)floor(parm[0]->data()->getDoubleVal(row, isNull));
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}
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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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{
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const string& str = parm[0]->data()->getStrVal(row, isNull);
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if (!isNull)
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ret = (uint64_t)floor(strtod(str.c_str(), 0));
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}
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break;
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case execplan::CalpontSystemCatalog::DATE:
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{
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string str = DataConvert::dateToString1(parm[0]->data()->getDateIntVal(row, isNull));
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if (!isNull)
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ret = strtoull(str.c_str(), NULL, 10);
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}
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break;
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case execplan::CalpontSystemCatalog::DATETIME:
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{
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string str =
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DataConvert::datetimeToString1(parm[0]->data()->getDatetimeIntVal(row, isNull));
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// strip off micro seconds
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str = str.substr(0,14);
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if (!isNull)
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ret = strtoull(str.c_str(), NULL, 10);
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}
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break;
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default:
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{
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std::ostringstream oss;
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oss << "floor: datatype of " << execplan::colDataTypeToString(op_ct.colDataType);
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throw logging::IDBExcept(oss.str(), ERR_DATATYPE_NOT_SUPPORT);
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}
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}
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return ret;
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}
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double Func_floor::getDoubleVal(Row& row,
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FunctionParm& parm,
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bool& isNull,
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CalpontSystemCatalog::ColType& op_ct)
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{
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double ret = 0.0;
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if (op_ct.colDataType == CalpontSystemCatalog::DOUBLE ||
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op_ct.colDataType == CalpontSystemCatalog::FLOAT)
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{
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ret = floor(parm[0]->data()->getDoubleVal(row, isNull));
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}
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else if (op_ct.colDataType == CalpontSystemCatalog::VARCHAR ||
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op_ct.colDataType == CalpontSystemCatalog::CHAR)
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{
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const string& str = parm[0]->data()->getStrVal(row, isNull);
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if (!isNull)
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ret = floor(strtod(str.c_str(), 0));
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}
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else
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{
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ret = (double) getIntVal(row, parm, isNull, op_ct);
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}
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return ret;
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}
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string Func_floor::getStrVal(Row& row,
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FunctionParm& parm,
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bool& isNull,
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CalpontSystemCatalog::ColType& op_ct)
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{
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char tmp[512] = {'\0'};
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if (op_ct.colDataType == CalpontSystemCatalog::DOUBLE ||
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op_ct.colDataType == CalpontSystemCatalog::UDOUBLE ||
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op_ct.colDataType == CalpontSystemCatalog::FLOAT ||
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op_ct.colDataType == CalpontSystemCatalog::UFLOAT ||
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op_ct.colDataType == CalpontSystemCatalog::VARCHAR ||
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op_ct.colDataType == CalpontSystemCatalog::CHAR)
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{
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snprintf(tmp, 511, "%f", getDoubleVal(row, parm, isNull, op_ct));
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// remove the decimals in the oss string.
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char *d = tmp;
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while ((*d != '.') && (*d != '\0'))
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d++;
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*d = '\0';
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}
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else if (isUnsigned(op_ct.colDataType))
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{
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#ifndef __LP64__
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snprintf(tmp, 511, "%llu", getUintVal(row, parm, isNull, op_ct));
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#else
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snprintf(tmp, 511, "%lu", getUintVal(row, parm, isNull, op_ct));
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#endif
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}
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else
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{
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#ifndef __LP64__
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snprintf(tmp, 511, "%lld", getIntVal(row, parm, isNull, op_ct));
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#else
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snprintf(tmp, 511, "%ld", getIntVal(row, parm, isNull, op_ct));
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#endif
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}
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return string(tmp);
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}
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} // namespace funcexp
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// vim:ts=4 sw=4:
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