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https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
synced 2025-06-01 22:41:43 +03:00
65287a0613
In the FLOAT/DOUBLE to string conversions a class global string was used to store the result. Unfortunately it is possible for an instance of this class to be used by multiple threads of PrimProc simultaneously. This would cause a race and data corruption or more likely a crash. This fix passes a string object from the caller to use instead.
107 lines
2.6 KiB
C++
107 lines
2.6 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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/****************************************************************************
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* $Id: func_elt.cpp 2665 2011-06-01 20:42:52Z rdempsey $
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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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using namespace std;
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#include "functor_str.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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using namespace dataconvert;
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namespace funcexp
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{
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CalpontSystemCatalog::ColType Func_elt::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_elt::getStrVal(rowgroup::Row& row,
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FunctionParm& parm,
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bool& isNull,
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CalpontSystemCatalog::ColType&)
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{
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uint64_t number = 0;
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//get number
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switch (parm[0]->data()->resultType().colDataType)
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{
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case CalpontSystemCatalog::BIGINT:
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case CalpontSystemCatalog::MEDINT:
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case CalpontSystemCatalog::SMALLINT:
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case CalpontSystemCatalog::TINYINT:
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case CalpontSystemCatalog::INT:
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case CalpontSystemCatalog::DOUBLE:
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case CalpontSystemCatalog::FLOAT:
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case CalpontSystemCatalog::CHAR:
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case CalpontSystemCatalog::TEXT:
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case CalpontSystemCatalog::VARCHAR:
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{
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double value = parm[0]->data()->getDoubleVal(row, isNull);
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number = (int64_t) value;
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break;
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}
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case CalpontSystemCatalog::DECIMAL:
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{
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IDB_Decimal d = parm[0]->data()->getDecimalVal(row, isNull);
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number = d.value / helpers::power(d.scale);
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int lefto = (d.value - number * helpers::power(d.scale)) / helpers::power(d.scale-1);
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if ( number >= 0 && lefto > 4 )
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number++;
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if ( number < 0 && lefto < -4 )
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number--;
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break;
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}
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default:
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isNull = true;
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return "";
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}
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if (number < 1)
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{
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isNull = true;
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return "";
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}
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if (number > parm.size()-1 )
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{
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isNull = true;
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return "";
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}
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std::string ret;
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stringValue(parm[number], row, isNull, ret);
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return ret;
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}
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} // namespace funcexp
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// vim:ts=4 sw=4:
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