You've already forked mariadb-columnstore-engine
mirror of
https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
synced 2025-11-03 17:13:17 +03:00
78 lines
2.4 KiB
C++
78 lines
2.4 KiB
C++
/* 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_strcmp.cpp 2477 2011-04-01 16:07:35Z rdempsey $
|
|
*
|
|
*
|
|
****************************************************************************/
|
|
|
|
#include <cstdlib>
|
|
#include <string>
|
|
#include <sstream>
|
|
using namespace std;
|
|
|
|
#include "functor_int.h"
|
|
#include "functioncolumn.h"
|
|
using namespace execplan;
|
|
|
|
#include "rowgroup.h"
|
|
using namespace rowgroup;
|
|
|
|
#include "joblisttypes.h"
|
|
using namespace joblist;
|
|
|
|
using namespace funcexp;
|
|
|
|
namespace funcexp
|
|
{
|
|
CalpontSystemCatalog::ColType Func_strcmp::operationType(FunctionParm& /*fp*/,
|
|
CalpontSystemCatalog::ColType& resultType)
|
|
{
|
|
// operation type is not used by this functor
|
|
// return fp[0]->data()->resultType();
|
|
return resultType;
|
|
}
|
|
|
|
int64_t Func_strcmp::getIntVal(rowgroup::Row& row, FunctionParm& fp, bool& isNull,
|
|
execplan::CalpontSystemCatalog::ColType& /*type*/)
|
|
{
|
|
CHARSET_INFO* cs = fp[0]->data()->resultType().getCharset();
|
|
const auto& str = fp[0]->data()->getStrVal(row, isNull);
|
|
const auto& str1 = fp[1]->data()->getStrVal(row, isNull);
|
|
|
|
// XXX: str() results may be nullptrs.
|
|
int ret = cs->strnncollsp(str.str(), str.length(), str1.str(), str1.length());
|
|
// mysql's strcmp returns only -1, 0, and 1
|
|
return (ret < 0 ? -1 : (ret > 0 ? 1 : 0));
|
|
}
|
|
|
|
std::string Func_strcmp::getStrVal(rowgroup::Row& row, FunctionParm& fp, bool& isNull,
|
|
execplan::CalpontSystemCatalog::ColType& type)
|
|
{
|
|
int64_t val = getIntVal(row, fp, isNull, type);
|
|
|
|
if (val > 0)
|
|
return string("1");
|
|
else if (val < 0)
|
|
return string("-1");
|
|
else
|
|
return string("0");
|
|
}
|
|
|
|
} // namespace funcexp
|