the begginning

utils/funcexp/func_coalesce.cpp

@@ -0,0 +1,169 @@
+/* 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_coalesce.cpp 3495 2013-01-21 14:09:51Z rdempsey $
+*
+*
+****************************************************************************/
+
+#include <cstdlib>
+#include <string>
+#include <sstream>
+using namespace std;
+
+#include "functioncolumn.h"
+#include "rowgroup.h"
+using namespace execplan;
+
+#include "dataconvert.h"
+using namespace dataconvert;
+
+#include "functor_all.h"
+#include "funchelpers.h"
+
+namespace funcexp
+{
+CalpontSystemCatalog::ColType Func_coalesce::operationType( FunctionParm& fp, CalpontSystemCatalog::ColType& resultType )
+{
+	return resultType;
+}
+
+int64_t Func_coalesce::getIntVal(rowgroup::Row& row,
+						FunctionParm& parm,
+						bool& isNull,
+						CalpontSystemCatalog::ColType& op_ct)
+{
+	int64_t val = 0;
+	for (uint32_t i = 0; i < parm.size(); i++)
+	{
+		val = parm[i]->data()->getIntVal(row, isNull);
+		if (isNull)
+		{
+			isNull = false;
+			continue;
+		}
+		return val;
+	}
+	isNull = true;
+	return val;
+}
+
+string Func_coalesce::getStrVal(rowgroup::Row& row,
+							FunctionParm& parm,
+							bool& isNull,
+							CalpontSystemCatalog::ColType& ct)
+{
+	string val;
+	for (uint32_t i = 0; i < parm.size(); i++)
+	{
+		val = parm[i]->data()->getStrVal(row, isNull);
+		if (isNull)
+		{
+			isNull = false;
+			continue;
+		}
+		return val;
+	}
+	isNull = true;
+	return "";
+}
+
+int32_t Func_coalesce::getDateIntVal(rowgroup::Row& row,
+							FunctionParm& parm,
+							bool& isNull,
+							CalpontSystemCatalog::ColType& ct)
+{
+	int64_t val = 0;
+	for (uint32_t i = 0; i < parm.size(); i++)
+	{
+		val = parm[i]->data()->getDateIntVal(row, isNull);
+		if (isNull)
+		{
+			isNull = false;
+			continue;
+		}
+		return val;
+	}
+	isNull = true;
+	return val;
+}
+
+int64_t Func_coalesce::getDatetimeIntVal(rowgroup::Row& row,
+							FunctionParm& parm,
+							bool& isNull,
+							CalpontSystemCatalog::ColType& ct)
+{
+	int64_t val = 0;
+	for (uint32_t i = 0; i < parm.size(); i++)
+	{
+		val = parm[i]->data()->getDatetimeIntVal(row, isNull);
+		if (isNull)
+		{
+			isNull = false;
+			continue;
+		}
+		return val;
+	}
+	isNull = true;
+	return val;
+}
+
+double Func_coalesce::getDoubleVal(rowgroup::Row& row,
+						FunctionParm& parm,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& ct)
+{
+	double d = 0.0;
+	for (uint32_t i = 0; i < parm.size(); i++)
+	{
+		d = parm[i]->data()->getDoubleVal(row, isNull);
+		if (isNull)
+		{
+			isNull = false;
+			continue;
+		}
+		return d;
+	}
+	isNull = true;
+	return d;
+}
+
+
+execplan::IDB_Decimal Func_coalesce::getDecimalVal(rowgroup::Row& row,
+						FunctionParm& parm,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& ct)
+{
+	IDB_Decimal d;
+	for (uint32_t i = 0; i < parm.size(); i++)
+	{
+		d = parm[i]->data()->getDecimalVal(row, isNull);
+		if (isNull)
+		{
+			isNull = false;
+			continue;
+		}
+		return d;
+	}
+	isNull = true;
+	return d;
+}
+
+
+} // namespace funcexp
+// vim:ts=4 sw=4: