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105 lines
2.5 KiB
C++
105 lines
2.5 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_repeat.cpp 2477 2011-04-01 16:07:35Z 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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#include <sstream>
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using namespace std;
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#include "functor_str.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 "joblisttypes.h"
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using namespace joblist;
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class to_lower
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{
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public:
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char operator() (char c) const // notice the return type
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{
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return tolower(c);
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}
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};
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namespace funcexp
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{
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CalpontSystemCatalog::ColType Func_repeat::operationType(FunctionParm& fp, CalpontSystemCatalog::ColType& resultType)
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{
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// operation type is not used by this functor
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//return fp[0]->data()->resultType();
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return resultType;
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}
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std::string Func_repeat::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)
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{
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string str = stringValue(fp[0], row, isNull);
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if (str.empty() || str == "")
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return "";
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int count = fp[1]->data()->getIntVal(row, isNull);
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if (isNull)
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return "";
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if ( count < 1 )
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return "";
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//calculate size of buffer to allocate
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int size = str.length() * count;
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//allocate memory
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char* result = NULL;
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result = (char*) alloca(size * sizeof(char) + 1);
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if (result == NULL)
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{
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return "";
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}
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memset( (char*) result, 0, size);
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for ( int i = 0 ; i < count ; i ++ )
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{
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if (strcat(result, str.c_str()) == NULL)
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return "";
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}
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return result;
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}
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} // namespace funcexp
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// vim:ts=4 sw=4:
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