mirror of
https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
synced 2025-05-31 11:41:14 +03:00
28fe2c0b70
For the initial BLOB/TEXT pull request we put them in the same bucket as VARBINARY, forcing many functions to be disabled. This patch enables the same TEXT function support as VARCHAR.
123 lines
3.4 KiB
C++
123 lines
3.4 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_hex.cpp 3923 2013-06-19 21:43:06Z bwilkinson $
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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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#include <limits>
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using namespace std;
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#include <boost/scoped_array.hpp>
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using namespace boost;
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#include "functor_str.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 "funchelpers.h"
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namespace
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{
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char digit_upper[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
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void octet2hex(char *to, const char *str, uint32_t len)
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{
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const char *str_end= str + len;
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for (; str != str_end; ++str)
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{
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*to++= digit_upper[((uint8_t) *str) >> 4];
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*to++= digit_upper[((uint8_t) *str) & 0x0F];
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}
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*to = '\0';
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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_hex::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_hex::getStrVal(rowgroup::Row& row,
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FunctionParm& parm,
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bool& isNull,
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CalpontSystemCatalog::ColType& ct)
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{
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string retval;
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uint64_t dec;
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char ans[65];
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switch (parm[0]->data()->resultType().colDataType)
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{
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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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case CalpontSystemCatalog::DATETIME:
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case CalpontSystemCatalog::DATE:
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{
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const string& arg= parm[0]->data()->getStrVal(row, isNull);
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scoped_array<char> hexPtr(new char[strlen(arg.c_str())*2+1]);
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octet2hex(hexPtr.get(), arg.c_str(), strlen(arg.c_str()));
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return string(hexPtr.get(), strlen(arg.c_str())*2);
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}
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case CalpontSystemCatalog::DOUBLE:
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case CalpontSystemCatalog::FLOAT:
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case CalpontSystemCatalog::DECIMAL:
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{
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/* Return hex of unsigned longlong value */
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double val= parm[0]->data()->getDoubleVal(row, isNull);
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if ((val <= (double) numeric_limits<int64_t>::min()) ||
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(val >= (double) numeric_limits<int64_t>::max()))
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dec= ~(int64_t) 0;
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else
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dec= (uint64_t) (val + (val > 0 ? 0.5 : -0.5));
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retval = helpers::convNumToStr(dec, ans, 16);
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break;
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}
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case CalpontSystemCatalog::VARBINARY:
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case CalpontSystemCatalog::BLOB:
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{
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const string& arg = parm[0]->data()->getStrVal(row, isNull);
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uint64_t hexLen = arg.size() * 2;
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scoped_array<char> hexPtr(new char[hexLen + 1]); // "+ 1" for the last \0
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octet2hex(hexPtr.get(), arg.data(), arg.size());
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return string(hexPtr.get(), hexLen);
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}
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default:
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{
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dec= (uint64_t)parm[0]->data()->getIntVal(row, isNull);
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retval = helpers::convNumToStr(dec, ans, 16);
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if (retval.length() > (uint32_t)ct.colWidth)
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retval = retval.substr(retval.length()-ct.colWidth, ct.colWidth);
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}
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}
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return retval;
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}
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} // namespace funcexp
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// vim:ts=4 sw=4:
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