the begginning

utils/funcexp/func_bitwise.cpp

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+/* Copyright (C) 2014 InfiniDB, Inc.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License
+   as published by the Free Software Foundation; version 2 of
+   the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+   MA 02110-1301, USA. */
+
+/****************************************************************************
+* $Id: func_bitwise.cpp 3616 2013-03-04 14:56:29Z rdempsey $
+*
+*
+****************************************************************************/
+
+#include <string>
+using namespace std;
+
+#include "functor_int.h"
+#include "funchelpers.h"
+#include "functioncolumn.h"
+#include "predicateoperator.h"
+using namespace execplan;
+
+#include "rowgroup.h"
+using namespace rowgroup;
+
+#include "errorcodes.h"
+#include "idberrorinfo.h"
+#include "errorids.h"
+using namespace logging;
+
+#include "dataconvert.h"
+using namespace dataconvert;
+
+namespace
+{
+using namespace funcexp;
+
+// @bug 4703 - the actual bug was only in the DATETIME case
+// part of this statement below, but instead of leaving 5 identical
+// copies of this code, extracted into a single utility function
+// here.  This same method is potentially useful in other methods
+// and could be extracted into a utility class with its own header
+// if that is the case - this is left as future exercise
+bool getUIntValFromParm(
+		Row&  row,
+		const execplan::SPTP& parm,
+		uint64_t& value,
+		bool& isNull)
+{
+	switch (parm->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::DOUBLE:
+		case execplan::CalpontSystemCatalog::FLOAT:
+        case execplan::CalpontSystemCatalog::UDOUBLE:
+        case execplan::CalpontSystemCatalog::UFLOAT:
+		{
+			value = parm->data()->getIntVal(row, isNull);
+		}
+		break;
+
+        case execplan::CalpontSystemCatalog::UBIGINT:
+        case execplan::CalpontSystemCatalog::UINT:
+        case execplan::CalpontSystemCatalog::UMEDINT:
+        case execplan::CalpontSystemCatalog::UTINYINT:
+        case execplan::CalpontSystemCatalog::USMALLINT:
+        {
+            value = parm->data()->getUintVal(row, isNull);
+        }
+        break;
+
+        case execplan::CalpontSystemCatalog::VARCHAR:
+		case execplan::CalpontSystemCatalog::CHAR:
+		{
+			value = parm->data()->getIntVal(row, isNull);
+			if (isNull)
+			{
+				isNull = true;
+			}
+			else
+			{
+				value = 0;
+			}
+		}
+		break;
+
+		case execplan::CalpontSystemCatalog::DECIMAL:
+		case execplan::CalpontSystemCatalog::UDECIMAL:
+		{
+			IDB_Decimal d = parm->data()->getDecimalVal(row, isNull);
+			if (parm->data()->resultType().colDataType == execplan::CalpontSystemCatalog::UDECIMAL &&
+				d.value < 0)
+			{
+				d.value = 0;
+			}
+			int64_t tmpval = d.value / helpers::power(d.scale);
+			int lefto = (d.value - tmpval * helpers::power(d.scale)) / helpers::power(d.scale-1);
+			if ( tmpval >= 0 && lefto > 4 )
+				tmpval++;
+			if ( tmpval < 0 && lefto < -4 )
+				tmpval--;
+			value = tmpval;
+		}
+		break;
+
+		case execplan::CalpontSystemCatalog::DATE:
+		{
+			int32_t time = parm->data()->getDateIntVal(row, isNull);
+
+			Date d(time);
+			value = d.convertToMySQLint();
+		}
+		break;
+
+		case execplan::CalpontSystemCatalog::DATETIME:
+		{
+			int64_t time = parm->data()->getDatetimeIntVal(row, isNull);
+
+			// @bug 4703 - missing year when convering to int
+			DateTime dt(time);
+			value = dt.convertToMySQLint();
+		}
+		break;
+
+		default:
+		{
+			return false;
+		}
+	}
+	return true;
+}
+}
+
+namespace funcexp
+{
+
+//
+// BITAND
+//
+
+
+CalpontSystemCatalog::ColType Func_bitand::operationType( FunctionParm& fp, CalpontSystemCatalog::ColType& resultType )
+{
+	return resultType;
+}
+
+int64_t Func_bitand::getIntVal(Row& row,
+									FunctionParm& parm,
+									bool& isNull,
+									CalpontSystemCatalog::ColType& operationColType)
+{
+	if ( parm.size() < 2 ) {
+		isNull = true;
+		return 0;
+	}
+
+	uint64_t val1 = 0;
+	uint64_t val2 = 0;
+	if (!getUIntValFromParm(row, parm[0], val1, isNull) ||
+		!getUIntValFromParm(row, parm[1], val2, isNull))
+	{
+		std::ostringstream oss;
+		oss << "bitand: datatype of " << execplan::colDataTypeToString(operationColType.colDataType);
+		throw logging::IDBExcept(oss.str(), ERR_DATATYPE_NOT_SUPPORT);
+	}
+
+	return val1 & val2;
+}
+
+
+//
+// LEFT SHIFT
+//
+
+
+CalpontSystemCatalog::ColType Func_leftshift::operationType( FunctionParm& fp, CalpontSystemCatalog::ColType& resultType )
+{
+	return resultType;
+}
+
+int64_t Func_leftshift::getIntVal(Row& row,
+									FunctionParm& parm,
+									bool& isNull,
+									CalpontSystemCatalog::ColType& operationColType)
+{
+	if ( parm.size() < 2 ) {
+		isNull = true;
+		return 0;
+	}
+
+	uint64_t val1 = 0;
+	uint64_t val2 = 0;
+	if (!getUIntValFromParm(row, parm[0], val1, isNull) ||
+		!getUIntValFromParm(row, parm[1], val2, isNull))
+	{
+		std::ostringstream oss;
+		oss << "leftshift: datatype of " << execplan::colDataTypeToString(operationColType.colDataType);
+		throw logging::IDBExcept(oss.str(), ERR_DATATYPE_NOT_SUPPORT);
+	}
+
+	return val1 << val2;
+}
+
+
+//
+// RIGHT SHIFT
+//
+
+
+CalpontSystemCatalog::ColType Func_rightshift::operationType( FunctionParm& fp, CalpontSystemCatalog::ColType& resultType )
+{
+	return resultType;
+}
+
+int64_t Func_rightshift::getIntVal(Row& row,
+									FunctionParm& parm,
+									bool& isNull,
+									CalpontSystemCatalog::ColType& operationColType)
+{
+	if ( parm.size() < 2 ) {
+		isNull = true;
+		return 0;
+	}
+
+	uint64_t val1 = 0;
+	uint64_t val2 = 0;
+	if (!getUIntValFromParm(row, parm[0], val1, isNull) ||
+		!getUIntValFromParm(row, parm[1], val2, isNull))
+	{
+		std::ostringstream oss;
+		oss << "rightshift: datatype of " << execplan::colDataTypeToString(operationColType.colDataType);
+		throw logging::IDBExcept(oss.str(), ERR_DATATYPE_NOT_SUPPORT);
+	}
+
+	return val1 >> val2;
+}
+
+
+//
+// BIT OR
+//
+
+
+CalpontSystemCatalog::ColType Func_bitor::operationType( FunctionParm& fp, CalpontSystemCatalog::ColType& resultType )
+{
+	return resultType;
+}
+
+int64_t Func_bitor::getIntVal(Row& row,
+                              FunctionParm& parm,
+                              bool& isNull,
+                              CalpontSystemCatalog::ColType& operationColType)
+{
+	if ( parm.size() < 2 ) {
+		isNull = true;
+		return 0;
+	}
+
+	uint64_t val1 = 0;
+	uint64_t val2 = 0;
+	if (!getUIntValFromParm(row, parm[0], val1, isNull) ||
+		!getUIntValFromParm(row, parm[1], val2, isNull))
+	{
+		std::ostringstream oss;
+		oss << "bitor: datatype of " << execplan::colDataTypeToString(operationColType.colDataType);
+		throw logging::IDBExcept(oss.str(), ERR_DATATYPE_NOT_SUPPORT);
+	}
+
+	return val1 | val2;
+}
+
+uint64_t Func_bitor::getUintVal(rowgroup::Row& row,
+                                FunctionParm& fp,
+                                bool& isNull,
+                                execplan::CalpontSystemCatalog::ColType& op_ct)
+{ 
+    return static_cast<uint64_t>(getIntVal(row,fp,isNull,op_ct)); 
+}
+
+
+//
+// BIT XOR
+//
+
+
+CalpontSystemCatalog::ColType Func_bitxor::operationType( FunctionParm& fp, CalpontSystemCatalog::ColType& resultType )
+{
+	return resultType;
+}
+
+int64_t Func_bitxor::getIntVal(Row& row,
+									FunctionParm& parm,
+									bool& isNull,
+									CalpontSystemCatalog::ColType& operationColType)
+{
+	if ( parm.size() < 2 ) {
+		isNull = true;
+		return 0;
+	}
+
+	uint64_t val1 = 0;
+	uint64_t val2 = 0;
+	if (!getUIntValFromParm(row, parm[0], val1, isNull) ||
+		!getUIntValFromParm(row, parm[1], val2, isNull))
+	{
+		std::ostringstream oss;
+		oss << "bitxor: datatype of " << execplan::colDataTypeToString(operationColType.colDataType);
+		throw logging::IDBExcept(oss.str(), ERR_DATATYPE_NOT_SUPPORT);
+	}
+
+	return val1 ^ val2;
+}
+
+
+} // namespace funcexp
+// vim:ts=4 sw=4: