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https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
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3919c541ac
* Fix clang warnings * Remove vim tab guides * initialize variables * 'strncpy' output truncated before terminating nul copying as many bytes from a string as its length * Fix ISO C++17 does not allow 'register' storage class specifier for outdated bison * chars are unsigned on ARM, having if (ival < 0) always false * chars are unsigned by default on ARM and comparison with -1 if always true
74 lines
2.1 KiB
C++
74 lines
2.1 KiB
C++
/* Copyright (C) 2021 MariaDB Corporation
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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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#include <string>
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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 "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_concat_oracle::operationType(FunctionParm& fp,
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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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}
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// Returns the string that results from concatenating the arguments.
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// concat_oracle() returns NULL all arguments are NULL.
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// single arguments null is replaced by "".
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//
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string Func_concat_oracle::getStrVal(Row& row, FunctionParm& parm, bool& isNull,
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CalpontSystemCatalog::ColType&)
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{
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string ret;
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string tmp;
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stringValue(parm[0], row, isNull, ret);
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// Oracle Mode should replace NULL with "" unless all values are NULL
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if (isNull)
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{
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ret = "";
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isNull = false;
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}
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// TODO: do a better job of cutting down the number re-allocations.
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// look at Item_func_concat::realloc_result for ideas and use
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// std::string:resize() appropriatly.
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for (unsigned int id = 1; id < parm.size(); id++)
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{
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stringValue(parm[id], row, isNull, tmp);
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if (isNull)
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{
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tmp = "";
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isNull = false;
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}
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ret.append(tmp);
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}
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return ret;
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}
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} // namespace funcexp
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