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MCOL-641 Add support for functions (Part 1).
This commit is contained in:
Gagan Goel
committed by
Roman Nozdrin
Roman Nozdrin
parent
554c6da8e8
commit
cfe35b5c7f
@ -62,41 +62,8 @@ int64_t Func_floor::getIntVal(Row& row,
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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::DECIMAL:
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case execplan::CalpontSystemCatalog::UDECIMAL:
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{
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if (op_ct.scale == 0)
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{
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ret = parm[0]->data()->getIntVal(row, isNull);
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break;
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}
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IDB_Decimal decimal = parm[0]->data()->getDecimalVal(row, isNull);
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if (isNull)
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break;
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ret = decimal.value;
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// negative scale is not supported by CNX yet
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if (decimal.scale > 0)
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{
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if (decimal.scale >= 19)
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{
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std::ostringstream oss;
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oss << "floor: datatype of " << execplan::colDataTypeToString(op_ct.colDataType)
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<< " with scale " << (int) decimal.scale << " is beyond supported scale";
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throw logging::IDBExcept(oss.str(), ERR_DATATYPE_NOT_SUPPORT);
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}
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int64_t tmp = ret;
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ret /= helpers::powerOf10_c[decimal.scale];
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// Largest integer value not greater than X.
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if (tmp < 0 && tmp < ret)
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ret -= 1;
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}
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ret = parm[0]->data()->getIntVal(row, isNull);
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}
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break;
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@ -338,6 +305,20 @@ double Func_floor::getDoubleVal(Row& row,
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if (!isNull)
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ret = floor(strtod(str.c_str(), 0));
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}
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else if (op_ct.colDataType == CalpontSystemCatalog::DECIMAL ||
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op_ct.colDataType == CalpontSystemCatalog::UDECIMAL)
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{
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IDB_Decimal tmp = getDecimalVal(row, parm, isNull, op_ct);
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if (op_ct.colWidth == datatypes::MAXDECIMALWIDTH)
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{
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ret = datatypes::Decimal::getDoubleFromWideDecimal(tmp.s128Value);
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}
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else
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{
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ret = (double) tmp.value;
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}
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}
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else
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{
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ret = (double) getIntVal(row, parm, isNull, op_ct);
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@ -371,6 +352,20 @@ long double Func_floor::getLongDoubleVal(Row& row,
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if (!isNull)
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ret = floor(strtod(str.c_str(), 0));
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}
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else if (op_ct.colDataType == CalpontSystemCatalog::DECIMAL ||
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op_ct.colDataType == CalpontSystemCatalog::UDECIMAL)
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{
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IDB_Decimal tmp = getDecimalVal(row, parm, isNull, op_ct);
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if (op_ct.colWidth == datatypes::MAXDECIMALWIDTH)
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{
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ret = datatypes::Decimal::getLongDoubleFromWideDecimal(tmp.s128Value);
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}
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else
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{
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ret = (long double) tmp.value;
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}
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}
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else
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{
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ret = (long double) getIntVal(row, parm, isNull, op_ct);
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@ -416,6 +411,20 @@ string Func_floor::getStrVal(Row& row,
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*d = '\0';
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}
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else if (op_ct.colDataType == CalpontSystemCatalog::DECIMAL ||
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op_ct.colDataType == CalpontSystemCatalog::UDECIMAL)
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{
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IDB_Decimal d = getDecimalVal(row, parm, isNull, op_ct);
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if (op_ct.colWidth == datatypes::MAXDECIMALWIDTH)
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{
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dataconvert::DataConvert::decimalToString(&d.s128Value, d.scale, tmp, 511, op_ct.colDataType);
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}
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else
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{
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dataconvert::DataConvert::decimalToString(d.value, d.scale, tmp, 511, op_ct.colDataType);
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}
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}
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else if (isUnsigned(op_ct.colDataType))
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{
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#ifndef __LP64__
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@ -436,6 +445,165 @@ string Func_floor::getStrVal(Row& row,
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return string(tmp);
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}
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IDB_Decimal Func_floor::getDecimalVal(Row& row,
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FunctionParm& parm,
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bool& isNull,
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CalpontSystemCatalog::ColType& op_ct)
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{
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IDB_Decimal ret;
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switch (op_ct.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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ret.value = parm[0]->data()->getIntVal(row, isNull);
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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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ret = parm[0]->data()->getDecimalVal(row, isNull);
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if (isNull)
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break;
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// negative scale is not supported by CNX yet
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if (ret.scale > 0)
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{
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if (ret.scale > datatypes::INT128MAXPRECISION)
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{
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std::ostringstream oss;
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oss << "floor: datatype of " << execplan::colDataTypeToString(op_ct.colDataType)
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<< " with scale " << (int) ret.scale << " is beyond supported scale";
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throw logging::IDBExcept(oss.str(), ERR_DATATYPE_NOT_SUPPORT);
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}
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if (op_ct.colWidth == datatypes::MAXDECIMALWIDTH)
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{
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int128_t tmp = ret.s128Value;
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int128_t scaleDivisor;
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datatypes::getScaleDivisor(scaleDivisor, ret.scale);
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ret.s128Value /= scaleDivisor;
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// Largest integer value not greater than X.
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if (tmp < 0 && tmp < ret.s128Value)
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ret.s128Value -= 1;
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}
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else
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{
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int64_t tmp = ret.value;
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ret.value /= helpers::powerOf10_c[ret.scale];
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// Largest integer value not greater than X.
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if (tmp < 0 && tmp < ret.value)
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ret.value -= 1;
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}
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}
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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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ret.value = (int64_t)parm[0]->data()->getUintVal(row, isNull);
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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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case execplan::CalpontSystemCatalog::FLOAT:
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case execplan::CalpontSystemCatalog::UFLOAT:
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{
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ret.value = (int64_t) floor(parm[0]->data()->getDoubleVal(row, isNull));
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}
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break;
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case execplan::CalpontSystemCatalog::LONGDOUBLE:
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{
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ret.value = (int64_t) floorl(parm[0]->data()->getLongDoubleVal(row, isNull));
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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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case execplan::CalpontSystemCatalog::TEXT:
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{
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const string& str = parm[0]->data()->getStrVal(row, isNull);
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if (!isNull)
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ret.value = (int64_t) floor(strtod(str.c_str(), 0));
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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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string str = DataConvert::dateToString1(parm[0]->data()->getDateIntVal(row, isNull));
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if (!isNull)
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ret.value = atoll(str.c_str());
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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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string str =
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DataConvert::datetimeToString1(parm[0]->data()->getDatetimeIntVal(row, isNull));
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// strip off micro seconds
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str = str.substr(0, 14);
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if (!isNull)
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ret.value = atoll(str.c_str());
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}
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break;
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case execplan::CalpontSystemCatalog::TIMESTAMP:
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{
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string str =
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DataConvert::timestampToString1(parm[0]->data()->getTimestampIntVal(row, isNull), timeZone());
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// strip off micro seconds
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str = str.substr(0, 14);
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if (!isNull)
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ret.value = atoll(str.c_str());
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}
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break;
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case execplan::CalpontSystemCatalog::TIME:
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{
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string str =
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DataConvert::timeToString1(parm[0]->data()->getTimeIntVal(row, isNull));
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// strip off micro seconds
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str = str.substr(0, 14);
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if (!isNull)
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ret.value = atoll(str.c_str());
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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 << "floor: datatype of " << execplan::colDataTypeToString(op_ct.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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ret.scale = 0;
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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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