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1101 lines
30 KiB
C++
1101 lines
30 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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// $Id: func_cast.cpp 3923 2013-06-19 21:43:06Z bwilkinson $
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#include <string>
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using namespace std;
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#include "functor_dtm.h"
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#include "functor_int.h"
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#include "functor_real.h"
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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 "predicateoperator.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 "errorcodes.h"
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#include "idberrorinfo.h"
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#include "errorids.h"
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using namespace logging;
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#include "dataconvert.h"
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using namespace dataconvert;
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namespace
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{
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struct lconv* convData = localeconv();
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}
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namespace funcexp
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{
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// Why isn't "return resultType" the base default behavior?
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CalpontSystemCatalog::ColType Func_cast_signed::operationType( FunctionParm& fp, CalpontSystemCatalog::ColType& resultType )
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{
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return resultType;
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}
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CalpontSystemCatalog::ColType Func_cast_unsigned::operationType( FunctionParm& fp, CalpontSystemCatalog::ColType& resultType )
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{
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return resultType;
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}
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CalpontSystemCatalog::ColType Func_cast_char::operationType( FunctionParm& fp, CalpontSystemCatalog::ColType& resultType )
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{
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return resultType;
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}
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CalpontSystemCatalog::ColType Func_cast_date::operationType( FunctionParm& fp, CalpontSystemCatalog::ColType& resultType )
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{
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return resultType;
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}
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CalpontSystemCatalog::ColType Func_cast_datetime::operationType( FunctionParm& fp, CalpontSystemCatalog::ColType& resultType )
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{
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return resultType;
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}
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CalpontSystemCatalog::ColType Func_cast_decimal::operationType( FunctionParm& fp, CalpontSystemCatalog::ColType& resultType )
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{
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return resultType;
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}
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//
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// Func_cast_signed
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//
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int64_t Func_cast_signed::getIntVal(Row& row,
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FunctionParm& parm,
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bool& isNull,
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CalpontSystemCatalog::ColType& operationColType)
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{
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switch (parm[0]->data()->resultType().colDataType)
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{
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case execplan::CalpontSystemCatalog::BIGINT:
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case execplan::CalpontSystemCatalog::INT:
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case execplan::CalpontSystemCatalog::MEDINT:
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case execplan::CalpontSystemCatalog::TINYINT:
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case execplan::CalpontSystemCatalog::SMALLINT:
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{
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return (int64_t) parm[0]->data()->getIntVal(row, isNull);
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}
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break;
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case execplan::CalpontSystemCatalog::UBIGINT:
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case execplan::CalpontSystemCatalog::UINT:
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case execplan::CalpontSystemCatalog::UMEDINT:
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case execplan::CalpontSystemCatalog::UTINYINT:
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case execplan::CalpontSystemCatalog::USMALLINT:
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{
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return (int64_t) parm[0]->data()->getUintVal(row, isNull);
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}
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break;
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case execplan::CalpontSystemCatalog::FLOAT:
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case execplan::CalpontSystemCatalog::UFLOAT:
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case execplan::CalpontSystemCatalog::DOUBLE:
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case execplan::CalpontSystemCatalog::UDOUBLE:
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{
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double value = parm[0]->data()->getDoubleVal(row, isNull);
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if (value > 0)
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value += 0.5;
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else if (value < 0)
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value -= 0.5;
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int64_t ret = (int64_t) value;
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if (value > (double) numeric_limits<int64_t>::max())
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ret = numeric_limits<int64_t>::max();
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else if (value < (double) (numeric_limits<int64_t>::min()+2))
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ret = numeric_limits<int64_t>::min() + 2; // IDB min for bigint
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return ret;
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}
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break;
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case execplan::CalpontSystemCatalog::VARCHAR:
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case execplan::CalpontSystemCatalog::CHAR:
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{
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const string& value = parm[0]->data()->getStrVal(row, isNull);
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if (isNull)
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{
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isNull = true;
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return 0;
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}
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return atoll(value.c_str());
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}
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break;
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case execplan::CalpontSystemCatalog::DECIMAL:
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case execplan::CalpontSystemCatalog::UDECIMAL:
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{
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IDB_Decimal d = parm[0]->data()->getDecimalVal(row, isNull);
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int64_t value = d.value / helpers::power(d.scale);
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int lefto = (d.value - value * helpers::power(d.scale)) / helpers::power(d.scale-1);
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if ( value >= 0 && lefto > 4 )
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value++;
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if ( value < 0 && lefto < -4 )
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value--;
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return value;
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}
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break;
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case execplan::CalpontSystemCatalog::DATE:
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{
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int64_t time = parm[0]->data()->getDateIntVal(row, isNull);
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Date d(time);
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return d.convertToMySQLint();
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}
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break;
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case execplan::CalpontSystemCatalog::DATETIME:
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{
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int64_t time = parm[0]->data()->getDatetimeIntVal(row, isNull);
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// @bug 4703 need to include year
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DateTime dt(time);
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return dt.convertToMySQLint();
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}
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break;
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default:
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{
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std::ostringstream oss;
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oss << "cast: datatype of " << execplan::colDataTypeToString(operationColType.colDataType);
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throw logging::IDBExcept(oss.str(), ERR_DATATYPE_NOT_SUPPORT);
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}
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}
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return 0;
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}
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//
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// Func_cast_unsigned
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//
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uint64_t Func_cast_unsigned::getUintVal(Row& row,
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FunctionParm& parm,
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bool& isNull,
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CalpontSystemCatalog::ColType& operationColType)
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{
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switch (parm[0]->data()->resultType().colDataType)
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{
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case execplan::CalpontSystemCatalog::BIGINT:
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case execplan::CalpontSystemCatalog::INT:
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case execplan::CalpontSystemCatalog::MEDINT:
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case execplan::CalpontSystemCatalog::TINYINT:
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case execplan::CalpontSystemCatalog::SMALLINT:
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{
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return (int64_t) parm[0]->data()->getUintVal(row, isNull);
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}
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break;
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case execplan::CalpontSystemCatalog::UBIGINT:
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case execplan::CalpontSystemCatalog::UINT:
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case execplan::CalpontSystemCatalog::UMEDINT:
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case execplan::CalpontSystemCatalog::UTINYINT:
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case execplan::CalpontSystemCatalog::USMALLINT:
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{
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return parm[0]->data()->getUintVal(row, isNull);
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}
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break;
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case execplan::CalpontSystemCatalog::FLOAT:
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case execplan::CalpontSystemCatalog::UFLOAT:
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case execplan::CalpontSystemCatalog::DOUBLE:
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case execplan::CalpontSystemCatalog::UDOUBLE:
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{
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double value = parm[0]->data()->getDoubleVal(row, isNull);
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if (value > 0)
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value += 0.5;
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else if (value < 0)
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value -= 0.5;
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uint64_t ret = (uint64_t) value;
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if (value > (double) numeric_limits<uint64_t>::max()-2)
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ret = numeric_limits<int64_t>::max();
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else if (value < 0)
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ret = 0;
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return ret;
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}
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break;
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case execplan::CalpontSystemCatalog::VARCHAR:
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case execplan::CalpontSystemCatalog::CHAR:
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{
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const string& value = parm[0]->data()->getStrVal(row, isNull);
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if (isNull)
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{
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isNull = true;
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return 0;
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}
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uint64_t ret = strtoul(value.c_str(), 0, 0);
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return ret;
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}
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break;
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case execplan::CalpontSystemCatalog::DECIMAL:
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case execplan::CalpontSystemCatalog::UDECIMAL:
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{
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IDB_Decimal d = parm[0]->data()->getDecimalVal(row, isNull);
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if (d.value < 0)
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{
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return 0;
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}
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uint64_t value = d.value / helpers::power(d.scale);
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int lefto = (d.value - value * helpers::power(d.scale)) / helpers::power(d.scale-1);
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if ( value >= 0 && lefto > 4 )
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value++;
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return value;
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}
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break;
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case execplan::CalpontSystemCatalog::DATE:
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{
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int64_t time = parm[0]->data()->getDateIntVal(row, isNull);
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Date d(time);
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return d.convertToMySQLint();
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}
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break;
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case execplan::CalpontSystemCatalog::DATETIME:
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{
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int64_t time = parm[0]->data()->getDatetimeIntVal(row, isNull);
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// @bug 4703 need to include year
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DateTime dt(time);
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return dt.convertToMySQLint();
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}
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break;
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default:
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{
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std::ostringstream oss;
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oss << "cast: datatype of " << execplan::colDataTypeToString(operationColType.colDataType);
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throw logging::IDBExcept(oss.str(), ERR_DATATYPE_NOT_SUPPORT);
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}
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}
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return 0;
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}
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//
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// Func_cast_char
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//
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string Func_cast_char::getStrVal(Row& row,
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FunctionParm& parm,
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bool& isNull,
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CalpontSystemCatalog::ColType& operationColType)
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{
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// check for convert with 1 arg, return the argument
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if ( parm.size() == 1 )
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return parm[0]->data()->getStrVal(row, isNull);;
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int64_t length = parm[1]->data()->getIntVal(row, isNull);
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// @bug3488, a dummy parm is appended even the optional N is not present.
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if ( length < 0 )
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return parm[0]->data()->getStrVal(row, isNull);;
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switch (parm[0]->data()->resultType().colDataType)
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{
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case execplan::CalpontSystemCatalog::BIGINT:
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case execplan::CalpontSystemCatalog::INT:
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case execplan::CalpontSystemCatalog::MEDINT:
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case execplan::CalpontSystemCatalog::TINYINT:
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case execplan::CalpontSystemCatalog::SMALLINT:
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{
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return helpers::intToString(parm[0]->data()->getIntVal(row, isNull)).substr(0,length);
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}
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break;
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case execplan::CalpontSystemCatalog::UBIGINT:
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case execplan::CalpontSystemCatalog::UINT:
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case execplan::CalpontSystemCatalog::UMEDINT:
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case execplan::CalpontSystemCatalog::UTINYINT:
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case execplan::CalpontSystemCatalog::USMALLINT:
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{
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return helpers::uintToString(parm[0]->data()->getUintVal(row, isNull)).substr(0,length);
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}
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break;
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case execplan::CalpontSystemCatalog::DOUBLE:
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case execplan::CalpontSystemCatalog::UDOUBLE:
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{
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return helpers::doubleToString(parm[0]->data()->getDoubleVal(row, isNull)).substr(0,length);
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}
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break;
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case execplan::CalpontSystemCatalog::FLOAT:
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case execplan::CalpontSystemCatalog::UFLOAT:
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{
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return doubleToString(parm[0]->data()->getFloatVal(row, isNull)).substr(0,length);
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}
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break;
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case execplan::CalpontSystemCatalog::VARCHAR:
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case execplan::CalpontSystemCatalog::CHAR:
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{
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const string& value = parm[0]->data()->getStrVal(row, isNull);
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if (isNull)
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{
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isNull = true;
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return value;
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}
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return value.substr(0,length);
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}
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break;
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case execplan::CalpontSystemCatalog::DECIMAL:
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case execplan::CalpontSystemCatalog::UDECIMAL:
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{
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IDB_Decimal d = parm[0]->data()->getDecimalVal(row, isNull);
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char buf[80];
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dataconvert::DataConvert::decimalToString( d.value, d.scale, buf, 80, parm[0]->data()->resultType().colDataType);
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string sbuf = buf;
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return sbuf.substr(0,length);
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}
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break;
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case execplan::CalpontSystemCatalog::DATE:
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{
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return dataconvert::DataConvert::dateToString(parm[0]->data()->getDateIntVal(row, isNull)).substr(0,length);
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}
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break;
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case execplan::CalpontSystemCatalog::DATETIME:
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{
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return dataconvert::DataConvert::datetimeToString(parm[0]->data()->getDatetimeIntVal(row, isNull)).substr(0,length);
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}
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break;
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default:
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{
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std::ostringstream oss;
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oss << "cast: datatype of " << execplan::colDataTypeToString(operationColType.colDataType);
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throw logging::IDBExcept(oss.str(), ERR_DATATYPE_NOT_SUPPORT);
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}
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}
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}
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//
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// Func_cast_date
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//
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int64_t Func_cast_date::getIntVal(Row& row,
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FunctionParm& parm,
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bool& isNull,
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CalpontSystemCatalog::ColType& operationColType)
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{
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if (operationColType.colDataType == execplan::CalpontSystemCatalog::DATE)
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return Func_cast_date::getDateIntVal(row,
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parm,
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isNull,
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operationColType);
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return Func_cast_date::getDatetimeIntVal(row,
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parm,
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isNull,
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operationColType);
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}
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string Func_cast_date::getStrVal(Row& row,
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FunctionParm& parm,
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bool& isNull,
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CalpontSystemCatalog::ColType& operationColType)
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{
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int64_t value;
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if (operationColType.colDataType == execplan::CalpontSystemCatalog::DATE)
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{
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value = Func_cast_date::getDateIntVal(row,
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parm,
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isNull,
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operationColType);
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char buf[30] = {'\0'};
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dataconvert::DataConvert::dateToString(value, buf, sizeof(buf));
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return string(buf);
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}
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value = Func_cast_date::getDatetimeIntVal(row,
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parm,
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isNull,
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operationColType);
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char buf[30] = {'\0'};
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dataconvert::DataConvert::datetimeToString(value, buf, sizeof(buf));
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return string(buf);
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}
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IDB_Decimal Func_cast_date::getDecimalVal(Row& row,
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FunctionParm& parm,
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bool& isNull,
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CalpontSystemCatalog::ColType& operationColType)
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{
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IDB_Decimal decimal;
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decimal.value = Func_cast_date::getDatetimeIntVal(row,
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parm,
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isNull,
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operationColType);
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return decimal;
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}
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double Func_cast_date::getDoubleVal(Row& row,
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FunctionParm& parm,
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bool& isNull,
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CalpontSystemCatalog::ColType& operationColType)
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{
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return (double) Func_cast_date::getDatetimeIntVal(row,
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parm,
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isNull,
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operationColType);
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}
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int32_t Func_cast_date::getDateIntVal(rowgroup::Row& row,
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FunctionParm& parm,
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bool& isNull,
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execplan::CalpontSystemCatalog::ColType& op_ct)
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{
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int64_t val;
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switch (parm[0]->data()->resultType().colDataType)
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{
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case execplan::CalpontSystemCatalog::BIGINT:
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case execplan::CalpontSystemCatalog::INT:
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case execplan::CalpontSystemCatalog::MEDINT:
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case execplan::CalpontSystemCatalog::TINYINT:
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case execplan::CalpontSystemCatalog::SMALLINT:
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case execplan::CalpontSystemCatalog::UBIGINT:
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case execplan::CalpontSystemCatalog::UINT:
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case execplan::CalpontSystemCatalog::UMEDINT:
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case execplan::CalpontSystemCatalog::UTINYINT:
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case execplan::CalpontSystemCatalog::USMALLINT:
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{
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val = dataconvert::DataConvert::intToDate(parm[0]->data()->getIntVal(row, isNull));
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if (val == -1)
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isNull = true;
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else
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return val;
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break;
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}
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case execplan::CalpontSystemCatalog::DECIMAL:
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case execplan::CalpontSystemCatalog::UDECIMAL:
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{
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if (parm[0]->data()->resultType().scale != 0)
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{
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isNull = true;
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break;
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}
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else
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{
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val = dataconvert::DataConvert::intToDate(parm[0]->data()->getIntVal(row, isNull));
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if (val == -1)
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isNull = true;
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else
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return val;
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break;
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}
|
|
}
|
|
case execplan::CalpontSystemCatalog::VARCHAR:
|
|
case execplan::CalpontSystemCatalog::CHAR:
|
|
{
|
|
val = dataconvert::DataConvert::stringToDate(parm[0]->data()->getStrVal(row, isNull));
|
|
if (val == -1)
|
|
isNull = true;
|
|
else
|
|
return val;
|
|
break;
|
|
}
|
|
|
|
case execplan::CalpontSystemCatalog::DATE:
|
|
case execplan::CalpontSystemCatalog::DATETIME:
|
|
{
|
|
return parm[0]->data()->getDateIntVal(row, isNull);
|
|
}
|
|
default:
|
|
{
|
|
isNull = true;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int64_t Func_cast_date::getDatetimeIntVal(rowgroup::Row& row,
|
|
FunctionParm& parm,
|
|
bool& isNull,
|
|
execplan::CalpontSystemCatalog::ColType& operationColType)
|
|
{
|
|
int64_t val;
|
|
switch (parm[0]->data()->resultType().colDataType)
|
|
{
|
|
case execplan::CalpontSystemCatalog::BIGINT:
|
|
case execplan::CalpontSystemCatalog::INT:
|
|
case execplan::CalpontSystemCatalog::MEDINT:
|
|
case execplan::CalpontSystemCatalog::TINYINT:
|
|
case execplan::CalpontSystemCatalog::SMALLINT:
|
|
case execplan::CalpontSystemCatalog::UBIGINT:
|
|
case execplan::CalpontSystemCatalog::UINT:
|
|
case execplan::CalpontSystemCatalog::UMEDINT:
|
|
case execplan::CalpontSystemCatalog::UTINYINT:
|
|
case execplan::CalpontSystemCatalog::USMALLINT:
|
|
{
|
|
val = dataconvert::DataConvert::intToDatetime(parm[0]->data()->getIntVal(row, isNull));
|
|
if (val == -1)
|
|
isNull = true;
|
|
else
|
|
return val;
|
|
break;
|
|
}
|
|
case execplan::CalpontSystemCatalog::DECIMAL:
|
|
case execplan::CalpontSystemCatalog::UDECIMAL:
|
|
{
|
|
if (parm[0]->data()->resultType().scale != 0)
|
|
{
|
|
isNull = true;
|
|
break;
|
|
}
|
|
else
|
|
{
|
|
val = dataconvert::DataConvert::intToDatetime(parm[0]->data()->getIntVal(row, isNull));
|
|
if (val == -1)
|
|
isNull = true;
|
|
else
|
|
return val;
|
|
break;
|
|
}
|
|
}
|
|
case execplan::CalpontSystemCatalog::VARCHAR:
|
|
case execplan::CalpontSystemCatalog::CHAR:
|
|
{
|
|
val = dataconvert::DataConvert::stringToDatetime(parm[0]->data()->getStrVal(row, isNull));
|
|
if (val == -1)
|
|
isNull = true;
|
|
else
|
|
return val;
|
|
break;
|
|
}
|
|
|
|
case execplan::CalpontSystemCatalog::DATE:
|
|
{
|
|
return parm[0]->data()->getDatetimeIntVal(row, isNull);
|
|
}
|
|
case execplan::CalpontSystemCatalog::DATETIME:
|
|
{
|
|
// @bug 4703 eliminated unnecessary conversion from datetime to string and back
|
|
// need to zero out the time portions since we are casting to date
|
|
DateTime val1(parm[0]->data()->getDatetimeIntVal(row, isNull));
|
|
val1.hour = 0;
|
|
val1.minute = 0;
|
|
val1.second = 0;
|
|
val1.msecond = 0;
|
|
return *(reinterpret_cast<uint64_t*>(&val1));
|
|
}
|
|
default:
|
|
{
|
|
isNull = true;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
//
|
|
// Func_cast_datetime
|
|
//
|
|
|
|
int64_t Func_cast_datetime::getIntVal(Row& row,
|
|
FunctionParm& parm,
|
|
bool& isNull,
|
|
CalpontSystemCatalog::ColType& operationColType)
|
|
{
|
|
return Func_cast_datetime::getDatetimeIntVal(row,
|
|
parm,
|
|
isNull,
|
|
operationColType);
|
|
|
|
}
|
|
|
|
string Func_cast_datetime::getStrVal(Row& row,
|
|
FunctionParm& parm,
|
|
bool& isNull,
|
|
CalpontSystemCatalog::ColType& operationColType)
|
|
{
|
|
int64_t value = Func_cast_datetime::getDatetimeIntVal(row,
|
|
parm,
|
|
isNull,
|
|
operationColType);
|
|
|
|
char buf[30] = {'\0'};
|
|
dataconvert::DataConvert::datetimeToString(value, buf, sizeof(buf));
|
|
return string(buf);
|
|
}
|
|
|
|
IDB_Decimal Func_cast_datetime::getDecimalVal(Row& row,
|
|
FunctionParm& parm,
|
|
bool& isNull,
|
|
CalpontSystemCatalog::ColType& operationColType)
|
|
{
|
|
IDB_Decimal decimal;
|
|
|
|
decimal.value = Func_cast_datetime::getDatetimeIntVal(row,
|
|
parm,
|
|
isNull,
|
|
operationColType);
|
|
|
|
return decimal;
|
|
}
|
|
|
|
double Func_cast_datetime::getDoubleVal(Row& row,
|
|
FunctionParm& parm,
|
|
bool& isNull,
|
|
CalpontSystemCatalog::ColType& operationColType)
|
|
{
|
|
return (double) Func_cast_datetime::getDatetimeIntVal(row,
|
|
parm,
|
|
isNull,
|
|
operationColType);
|
|
}
|
|
|
|
int64_t Func_cast_datetime::getDatetimeIntVal(rowgroup::Row& row,
|
|
FunctionParm& parm,
|
|
bool& isNull,
|
|
execplan::CalpontSystemCatalog::ColType& operationColType)
|
|
{
|
|
int64_t val;
|
|
switch (parm[0]->data()->resultType().colDataType)
|
|
{
|
|
case execplan::CalpontSystemCatalog::BIGINT:
|
|
case execplan::CalpontSystemCatalog::INT:
|
|
case execplan::CalpontSystemCatalog::MEDINT:
|
|
case execplan::CalpontSystemCatalog::TINYINT:
|
|
case execplan::CalpontSystemCatalog::SMALLINT:
|
|
case execplan::CalpontSystemCatalog::UBIGINT:
|
|
case execplan::CalpontSystemCatalog::UINT:
|
|
case execplan::CalpontSystemCatalog::UMEDINT:
|
|
case execplan::CalpontSystemCatalog::UTINYINT:
|
|
case execplan::CalpontSystemCatalog::USMALLINT:
|
|
{
|
|
val = dataconvert::DataConvert::intToDatetime(parm[0]->data()->getIntVal(row, isNull));
|
|
if (val == -1)
|
|
isNull = true;
|
|
else
|
|
return val;
|
|
break;
|
|
}
|
|
case execplan::CalpontSystemCatalog::DECIMAL:
|
|
case execplan::CalpontSystemCatalog::UDECIMAL:
|
|
{
|
|
if (parm[0]->data()->resultType().scale)
|
|
{
|
|
val = dataconvert::DataConvert::intToDatetime(parm[0]->data()->getIntVal(row, isNull));
|
|
if (val == -1)
|
|
isNull = true;
|
|
else
|
|
return val;
|
|
}
|
|
else
|
|
{
|
|
isNull = true;
|
|
}
|
|
break;
|
|
}
|
|
case execplan::CalpontSystemCatalog::VARCHAR:
|
|
case execplan::CalpontSystemCatalog::CHAR:
|
|
{
|
|
val = dataconvert::DataConvert::stringToDatetime(parm[0]->data()->getStrVal(row, isNull));
|
|
if (val == -1)
|
|
isNull = true;
|
|
else
|
|
return val;
|
|
break;
|
|
}
|
|
case execplan::CalpontSystemCatalog::DATE:
|
|
{
|
|
return parm[0]->data()->getDatetimeIntVal(row, isNull);
|
|
}
|
|
case execplan::CalpontSystemCatalog::DATETIME:
|
|
{
|
|
return parm[0]->data()->getDatetimeIntVal(row, isNull);
|
|
}
|
|
default:
|
|
{
|
|
isNull = true;
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
//
|
|
// Func_cast_decimal
|
|
//
|
|
|
|
int64_t Func_cast_decimal::getIntVal(Row& row,
|
|
FunctionParm& parm,
|
|
bool& isNull,
|
|
CalpontSystemCatalog::ColType& operationColType)
|
|
{
|
|
|
|
IDB_Decimal decimal = Func_cast_decimal::getDecimalVal(row,
|
|
parm,
|
|
isNull,
|
|
operationColType);
|
|
|
|
return (int64_t) decimal.value/helpers::powerOf10_c[decimal.scale];
|
|
}
|
|
|
|
|
|
string Func_cast_decimal::getStrVal(Row& row,
|
|
FunctionParm& parm,
|
|
bool& isNull,
|
|
CalpontSystemCatalog::ColType& operationColType)
|
|
{
|
|
IDB_Decimal decimal = Func_cast_decimal::getDecimalVal(row,
|
|
parm,
|
|
isNull,
|
|
operationColType);
|
|
|
|
char buf[80];
|
|
|
|
dataconvert::DataConvert::decimalToString( decimal.value, decimal.scale, buf, 80, operationColType.colDataType);
|
|
|
|
string value = buf;
|
|
return value;
|
|
|
|
}
|
|
|
|
|
|
IDB_Decimal Func_cast_decimal::getDecimalVal(Row& row,
|
|
FunctionParm& parm,
|
|
bool& isNull,
|
|
CalpontSystemCatalog::ColType& operationColType)
|
|
{
|
|
IDB_Decimal decimal;
|
|
|
|
int32_t decimals = parm[1]->data()->getIntVal(row, isNull);
|
|
int64_t max_length = parm[2]->data()->getIntVal(row, isNull);
|
|
|
|
// As of 2.0, max length infiniDB can support is 18
|
|
// decimal(0,0) is valid, and no limit on integer number
|
|
if (max_length > 18 || max_length <= 0)
|
|
max_length = 18;
|
|
|
|
int64_t max_number_decimal = helpers::maxNumber_c[max_length];
|
|
|
|
switch (parm[0]->data()->resultType().colDataType)
|
|
{
|
|
case execplan::CalpontSystemCatalog::BIGINT:
|
|
case execplan::CalpontSystemCatalog::INT:
|
|
case execplan::CalpontSystemCatalog::MEDINT:
|
|
case execplan::CalpontSystemCatalog::TINYINT:
|
|
case execplan::CalpontSystemCatalog::SMALLINT:
|
|
{
|
|
decimal.value = parm[0]->data()->getIntVal(row, isNull);
|
|
decimal.scale = 0;
|
|
int64_t value = decimal.value * helpers::powerOf10_c[decimals];
|
|
|
|
if ( value > max_number_decimal )
|
|
{
|
|
decimal.value = max_number_decimal;
|
|
decimal.scale = decimals;
|
|
}
|
|
else if ( value < -max_number_decimal )
|
|
{
|
|
decimal.value = -max_number_decimal;
|
|
decimal.scale = decimals;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case execplan::CalpontSystemCatalog::UBIGINT:
|
|
case execplan::CalpontSystemCatalog::UINT:
|
|
case execplan::CalpontSystemCatalog::UMEDINT:
|
|
case execplan::CalpontSystemCatalog::UTINYINT:
|
|
case execplan::CalpontSystemCatalog::USMALLINT:
|
|
{
|
|
uint64_t uval = parm[0]->data()->getUintVal(row, isNull);
|
|
if (uval > (uint64_t)numeric_limits<int64_t>::max())
|
|
{
|
|
uval = numeric_limits<int64_t>::max();
|
|
}
|
|
decimal.value = uval;
|
|
decimal.scale = 0;
|
|
int64_t value = decimal.value * helpers::powerOf10_c[decimals];
|
|
|
|
if ( value > max_number_decimal )
|
|
{
|
|
decimal.value = max_number_decimal;
|
|
decimal.scale = decimals;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case execplan::CalpontSystemCatalog::DOUBLE:
|
|
case execplan::CalpontSystemCatalog::UDOUBLE:
|
|
case execplan::CalpontSystemCatalog::FLOAT:
|
|
case execplan::CalpontSystemCatalog::UFLOAT:
|
|
{
|
|
double value = parm[0]->data()->getDoubleVal(row, isNull);
|
|
if (value > 0)
|
|
decimal.value = (int64_t) (value * helpers::powerOf10_c[decimals] + 0.5);
|
|
else if (value < 0)
|
|
decimal.value = (int64_t) (value * helpers::powerOf10_c[decimals] - 0.5);
|
|
else
|
|
decimal.value = 0;
|
|
decimal.scale = decimals;
|
|
|
|
if ( value > max_number_decimal )
|
|
decimal.value = max_number_decimal;
|
|
else if ( value < -max_number_decimal )
|
|
decimal.value = -max_number_decimal;
|
|
}
|
|
break;
|
|
|
|
case execplan::CalpontSystemCatalog::DECIMAL:
|
|
case execplan::CalpontSystemCatalog::UDECIMAL:
|
|
{
|
|
decimal = parm[0]->data()->getDecimalVal(row, isNull);
|
|
|
|
|
|
if (decimals > decimal.scale)
|
|
decimal.value *= helpers::powerOf10_c[decimals-decimal.scale];
|
|
else
|
|
decimal.value = (int64_t)(decimal.value > 0 ?
|
|
(double)decimal.value/helpers::powerOf10_c[decimal.scale-decimals] + 0.5 :
|
|
(double)decimal.value/helpers::powerOf10_c[decimal.scale-decimals] - 0.5);
|
|
decimal.scale = decimals;
|
|
|
|
|
|
|
|
//int64_t value = decimal.value;
|
|
|
|
if ( decimal.value > max_number_decimal )
|
|
decimal.value = max_number_decimal;
|
|
else if ( decimal.value < -max_number_decimal )
|
|
decimal.value = -max_number_decimal;
|
|
}
|
|
break;
|
|
|
|
case execplan::CalpontSystemCatalog::VARCHAR:
|
|
case execplan::CalpontSystemCatalog::CHAR:
|
|
{
|
|
const string& strValue = parm[0]->data()->getStrVal(row, isNull);
|
|
const char* str = strValue.c_str();
|
|
const char* s;
|
|
const char* firstInt = NULL;
|
|
char* endptr = NULL;
|
|
char fracBuf[20];
|
|
int fracChars;
|
|
int negate = 1;
|
|
bool bFoundSign = false;
|
|
bool bRound = false;
|
|
double floatValue;
|
|
int64_t value = 0;
|
|
int64_t frac = 0;
|
|
|
|
if (strValue.empty())
|
|
{
|
|
isNull = true;
|
|
return IDB_Decimal(); // need a null value for IDB_Decimal??
|
|
}
|
|
|
|
decimal.scale = decimals;
|
|
decimal.value = 0;
|
|
|
|
// Look for scientific notation. The existence of an 'e' indicates it probably is.
|
|
for (s = str; *s; ++s) // This is faster than two finds.
|
|
{
|
|
if (*s == 'e' || *s == 'E')
|
|
{
|
|
floatValue = strtod(str, 0);
|
|
// If the float value is too large, the saturated result may end up with
|
|
// the wrong sign, so we just check first.
|
|
if ((int64_t)floatValue > max_number_decimal)
|
|
decimal.value = max_number_decimal;
|
|
else if ((int64_t)floatValue < -max_number_decimal)
|
|
decimal.value = -max_number_decimal;
|
|
else if (floatValue > 0)
|
|
decimal.value = (int64_t) (floatValue * helpers::powerOf10_c[decimals] + 0.5);
|
|
else if (floatValue < 0)
|
|
decimal.value = (int64_t) (floatValue * helpers::powerOf10_c[decimals] - 0.5);
|
|
else
|
|
decimal.value = 0;
|
|
if (decimal.value > max_number_decimal)
|
|
decimal.value = max_number_decimal;
|
|
else if (decimal.value < -max_number_decimal)
|
|
decimal.value = -max_number_decimal;
|
|
return decimal;
|
|
}
|
|
}
|
|
|
|
// There are cases (such as "-.95" that should return that may not result in the desired rounding.
|
|
// By stripping the sign and adding it back in later, we can get a more accurate answer.
|
|
for (s = str; *s; ++s)
|
|
{
|
|
if (*s == '-')
|
|
{
|
|
if (bFoundSign) // If we find a duplicate sign char, it's an error.
|
|
{
|
|
return decimal;
|
|
}
|
|
bFoundSign = true;
|
|
negate = -1;
|
|
}
|
|
else if (*s == '+')
|
|
{
|
|
if (bFoundSign)
|
|
{
|
|
return decimal;
|
|
}
|
|
bFoundSign = true;
|
|
}
|
|
else if (*s == *convData->decimal_point || *s == '.')
|
|
{
|
|
// If we find a decimal point, that means there's no leading integer. (like ".99")
|
|
// In this case we need to mark where we are.
|
|
endptr = const_cast<char*>(s);
|
|
break;
|
|
}
|
|
else if (isdigit(*s))
|
|
{
|
|
firstInt = s;
|
|
break;
|
|
}
|
|
}
|
|
|
|
errno = 0;
|
|
if (firstInt) // Checking to see if we have a decimal point, but no previous digits.
|
|
{
|
|
value = strtoll(firstInt, &endptr, 10);
|
|
}
|
|
if (!errno && endptr)
|
|
{
|
|
// Scale the integer portion according to the DECIMAL description
|
|
value *= helpers::powerOf10_c[decimals];
|
|
|
|
// Get the fractional part.
|
|
if (endptr && (*endptr == *convData->decimal_point || *endptr == '.'))
|
|
{
|
|
s = endptr + 1;
|
|
// Get the digits to the right of the decimal
|
|
// Only retrieve those that matter based on scale.
|
|
for (fracChars = 0;
|
|
*s && isdigit(*s) && fracChars < decimals;
|
|
++fracChars, ++s)
|
|
{
|
|
// Save the frac characters to a side buffer. This way we can limit
|
|
// ourselves to the scale without modifying the original string.
|
|
fracBuf[fracChars] = *s;
|
|
}
|
|
fracBuf[fracChars] = 0;
|
|
// Check to see if we need to round
|
|
if (isdigit(*s) && *s > '4')
|
|
{
|
|
bRound = true;
|
|
}
|
|
}
|
|
|
|
frac = strtoll(fracBuf, &endptr, 10);
|
|
value += frac + (bRound ? 1 : 0);
|
|
value *= negate;
|
|
}
|
|
|
|
decimal.value = value;
|
|
|
|
if (decimal.value > max_number_decimal)
|
|
decimal.value = max_number_decimal;
|
|
else if (decimal.value < -max_number_decimal)
|
|
decimal.value = -max_number_decimal;
|
|
}
|
|
break;
|
|
|
|
case execplan::CalpontSystemCatalog::DATE:
|
|
{
|
|
int32_t s = 0;
|
|
|
|
string value = dataconvert::DataConvert::dateToString1(parm[0]->data()->getDateIntVal(row, isNull));
|
|
int32_t x = atol(value.c_str());
|
|
if (!isNull)
|
|
{
|
|
decimal.value = x;
|
|
decimal.scale = s;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case execplan::CalpontSystemCatalog::DATETIME:
|
|
{
|
|
int32_t s = 0;
|
|
|
|
string value = dataconvert::DataConvert::datetimeToString1(parm[0]->data()->getDatetimeIntVal(row, isNull));
|
|
|
|
//strip off micro seconds
|
|
string date = value.substr(0,14);
|
|
|
|
int64_t x = atoll(date.c_str());
|
|
if (!isNull)
|
|
{
|
|
decimal.value = x;
|
|
decimal.scale = s;
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
{
|
|
std::ostringstream oss;
|
|
oss << "cast: datatype of " << execplan::colDataTypeToString(operationColType.colDataType);
|
|
throw logging::IDBExcept(oss.str(), ERR_DATATYPE_NOT_SUPPORT);
|
|
}
|
|
}
|
|
|
|
return decimal;
|
|
}
|
|
|
|
double Func_cast_decimal::getDoubleVal(Row& row,
|
|
FunctionParm& parm,
|
|
bool& isNull,
|
|
CalpontSystemCatalog::ColType& operationColType)
|
|
{
|
|
IDB_Decimal decimal = Func_cast_decimal::getDecimalVal(row,
|
|
parm,
|
|
isNull,
|
|
operationColType);
|
|
|
|
return (double) decimal.value/helpers::powerOf10_c[decimal.scale];
|
|
}
|
|
|
|
|
|
} // namespace funcexp
|
|
// vim:ts=4 sw=4:
|