/* 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_greatest.cpp 3954 2013-07-08 16:30:15Z bpaul $ * * ****************************************************************************/ #include <cstdlib> #include <string> #include <sstream> using namespace std; #include "functor_all.h" #include "functioncolumn.h" using namespace execplan; #include "rowgroup.h" using namespace rowgroup; #include "joblisttypes.h" using namespace joblist; #include "utils_utf8.h" using namespace funcexp; class to_lower { public: char operator() (char c) const // notice the return type { return tolower(c); } }; namespace funcexp { CalpontSystemCatalog::ColType Func_greatest::operationType(FunctionParm& fp, CalpontSystemCatalog::ColType& resultType) { // operation type is not used by this functor //return fp[0]->data()->resultType(); return resultType; } int64_t Func_greatest::getIntVal(rowgroup::Row& row, FunctionParm& fp, bool& isNull, execplan::CalpontSystemCatalog::ColType& op_ct) { double str = fp[0]->data()->getDoubleVal(row, isNull); double greatestStr = str; for (uint32_t i = 1; i < fp.size(); i++) { double str1 = fp[i]->data()->getDoubleVal(row, isNull); if ( greatestStr < str1 ) greatestStr = str1; } uint64_t tmp = (uint64_t)greatestStr; return (int64_t) tmp; } uint64_t Func_greatest::getUintVal(rowgroup::Row& row, FunctionParm& fp, bool& isNull, execplan::CalpontSystemCatalog::ColType& op_ct) { double str = fp[0]->data()->getDoubleVal(row, isNull); double greatestStr = str; for (uint32_t i = 1; i < fp.size(); i++) { double str1 = fp[i]->data()->getDoubleVal(row, isNull); if ( greatestStr < str1 ) greatestStr = str1; } return (uint64_t) greatestStr; } double Func_greatest::getDoubleVal(rowgroup::Row& row, FunctionParm& fp, bool& isNull, execplan::CalpontSystemCatalog::ColType& op_ct) { double str = fp[0]->data()->getDoubleVal(row, isNull); double greatestStr = str; for (uint32_t i = 1; i < fp.size(); i++) { double str1 = fp[i]->data()->getDoubleVal(row, isNull); if ( greatestStr < str1 ) greatestStr = str1; } return (double) greatestStr; } std::string Func_greatest::getStrVal(rowgroup::Row& row, FunctionParm& fp, bool& isNull, execplan::CalpontSystemCatalog::ColType& op_ct) { const string& str = fp[0]->data()->getStrVal(row, isNull); string greatestStr = str; for (uint32_t i = 1; i < fp.size(); i++) { const string& str1 = fp[i]->data()->getStrVal(row, isNull); int tmp = utf8::idb_strcoll(greatestStr.c_str(), str1.c_str()); if ( tmp < 0 ) // if ( greatestStr < str1 ) greatestStr = str1; } return greatestStr; } IDB_Decimal Func_greatest::getDecimalVal(Row& row, FunctionParm& fp, bool& isNull, CalpontSystemCatalog::ColType& ct) { // double str = fp[0]->data()->getDoubleVal(row, isNull); IDB_Decimal str = fp[0]->data()->getDecimalVal(row, isNull); IDB_Decimal greatestStr = str; for (uint32_t i = 1; i < fp.size(); i++) { IDB_Decimal str1 = fp[i]->data()->getDecimalVal(row, isNull); if ( greatestStr < str1 ) greatestStr = str1; } return greatestStr; } int32_t Func_greatest::getDateIntVal(rowgroup::Row& row, FunctionParm& fp, bool& isNull, execplan::CalpontSystemCatalog::ColType& ct) { int32_t str = fp[0]->data()->getDateIntVal(row, isNull); int32_t greatestStr = str; for (uint32_t i = 1; i < fp.size(); i++) { int32_t str1 = fp[i]->data()->getDateIntVal(row, isNull); if ( greatestStr < str1 ) greatestStr = str1; } return greatestStr; } int64_t Func_greatest::getDatetimeIntVal(rowgroup::Row& row, FunctionParm& fp, bool& isNull, execplan::CalpontSystemCatalog::ColType& ct) { int64_t str = fp[0]->data()->getDatetimeIntVal(row, isNull); int64_t greatestStr = str; for (uint32_t i = 1; i < fp.size(); i++) { int64_t str1 = fp[i]->data()->getDatetimeIntVal(row, isNull); if ( greatestStr < str1 ) greatestStr = str1; } return greatestStr; } int64_t Func_greatest::getTimeIntVal(rowgroup::Row& row, FunctionParm& fp, bool& isNull, execplan::CalpontSystemCatalog::ColType& ct) { // Strip off unused day int64_t greatestStr = fp[0]->data()->getTimeIntVal(row, isNull); int64_t str = greatestStr << 12; for (uint32_t i = 1; i < fp.size(); i++) { int64_t str1 = fp[i]->data()->getTimeIntVal(row, isNull); int64_t str2 = str1 << 12; if ( str < str2 ) { greatestStr = str1; str = str2; } } return greatestStr; } } // namespace funcexp // vim:ts=4 sw=4: