mirror of
https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
synced 2025-05-31 11:41:14 +03:00
150 lines
4.1 KiB
C++
150 lines
4.1 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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// $Id: functor.h 3495 2013-01-21 14:09:51Z rdempsey $
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/** @file */
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#ifndef FUNCTOR_H
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#define FUNCTOR_H
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#include <cstdlib>
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#include <string>
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#include <sstream>
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#include <string>
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#include "parsetree.h"
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#include "exceptclasses.h"
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#include "errorids.h"
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#include "idberrorinfo.h"
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#include "calpontsystemcatalog.h"
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namespace rowgroup
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{
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class Row;
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}
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namespace execplan
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{
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extern const std::string colDataTypeToString(CalpontSystemCatalog::ColDataType cdt);
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}
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namespace funcexp
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{
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//typedef std::vector<execplan::STNP> FunctionParm;
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typedef std::vector<execplan::SPTP> FunctionParm;
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/** @brief Func class
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*/
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class Func
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{
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public:
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Func();
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Func(const std::string& funcName);
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virtual ~Func() {}
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const std::string funcName() const { return fFuncName; }
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void funcName(const std::string funcName) { fFuncName = funcName; }
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virtual execplan::CalpontSystemCatalog::ColType operationType(FunctionParm& fp, execplan::CalpontSystemCatalog::ColType& resultType) = 0;
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virtual int64_t getIntVal(rowgroup::Row& row,
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FunctionParm& fp,
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bool& isNull,
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execplan::CalpontSystemCatalog::ColType& op_ct) = 0;
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virtual uint64_t getUintVal(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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{ return static_cast<uint64_t>(getIntVal(row,fp,isNull,op_ct)); }
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virtual double 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) = 0;
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virtual std::string getStrVal(rowgroup::Row& row,
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FunctionParm& fp,
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bool& isNull,
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execplan::CalpontSystemCatalog::ColType& op_ct) = 0;
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virtual execplan::IDB_Decimal getDecimalVal(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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{ return execplan::IDB_Decimal(getIntVal(row, fp, isNull, op_ct),0,0); }
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virtual int32_t getDateIntVal(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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{ return intToDate(getIntVal(row, fp, isNull, op_ct)); }
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virtual int64_t getDatetimeIntVal(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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{ return intToDatetime(getIntVal(row, fp, isNull, op_ct)); }
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virtual bool getBoolVal(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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{ int64_t intVal = getIntVal(row, fp, isNull, op_ct); return (!isNull && intVal); }
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virtual float getFloatVal(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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{ return getDoubleVal(row, fp, isNull, op_ct); }
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const float floatNullVal() const { return fFloatNullVal; }
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const double doubleNullVal() const { return fDoubleNullVal; }
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protected:
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virtual uint32_t stringToDate(std::string);
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virtual uint64_t stringToDatetime(std::string);
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virtual uint32_t intToDate(int64_t);
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virtual uint64_t intToDatetime(int64_t);
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virtual std::string intToString(int64_t);
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virtual std::string doubleToString(double);
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std::string fFuncName;
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private:
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//defaults okay
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//Func(const Func& rhs);
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//Func& operator=(const Func& rhs);
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void init();
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float fFloatNullVal;
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double fDoubleNullVal;
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};
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}
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#endif
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