the begginning

utils/funcexp/func_date.cpp

@@ -0,0 +1,122 @@
+/* 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_date.cpp 3923 2013-06-19 21:43:06Z bwilkinson $
+*
+*
+****************************************************************************/
+
+#include <cstdlib>
+#include <string>
+#include <sstream>
+using namespace std;
+
+#include "functor_dtm.h"
+#include "functioncolumn.h"
+#include "rowgroup.h"
+using namespace execplan;
+
+#include "dataconvert.h"
+
+#include "errorcodes.h"
+#include "idberrorinfo.h"
+#include "errorids.h"
+using namespace logging;
+
+
+namespace funcexp
+{
+
+CalpontSystemCatalog::ColType Func_date::operationType( FunctionParm& fp, CalpontSystemCatalog::ColType& resultType )
+{
+	return resultType;
+}
+
+int64_t Func_date::getIntVal(rowgroup::Row& row,
+							FunctionParm& parm,
+							bool& isNull,
+							CalpontSystemCatalog::ColType&)
+{
+	CalpontSystemCatalog::ColDataType type = parm[0]->data()->resultType().colDataType;
+
+	string value = "";
+
+	switch (type)
+	{
+		case execplan::CalpontSystemCatalog::DATE:
+		{
+			return parm[0]->data()->getDatetimeIntVal(row, isNull);
+			break;
+		}
+
+		case execplan::CalpontSystemCatalog::DATETIME:
+		{
+			int64_t val1  = parm[0]->data()->getDatetimeIntVal(row, isNull);
+			value = dataconvert::DataConvert::datetimeToString(val1);
+			value = value.substr(0,10);
+			break;
+		}
+
+		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:
+        case execplan::CalpontSystemCatalog::DOUBLE:
+		case execplan::CalpontSystemCatalog::UDOUBLE:
+		case execplan::CalpontSystemCatalog::FLOAT:
+        case execplan::CalpontSystemCatalog::UFLOAT:
+		case execplan::CalpontSystemCatalog::VARCHAR:
+		case execplan::CalpontSystemCatalog::CHAR:
+		case execplan::CalpontSystemCatalog::DECIMAL:
+        case execplan::CalpontSystemCatalog::UDECIMAL:
+		{
+			isNull = true;
+			return 0;
+		}
+		break;
+
+		default:
+		{
+			std::ostringstream oss;
+			oss << "date: datatype of " << execplan::colDataTypeToString(type);
+			throw logging::IDBExcept(oss.str(), ERR_DATATYPE_NOT_SUPPORT);
+		}
+	}
+
+	return dataconvert::DataConvert::datetimeToInt(value);
+}
+
+string Func_date::getStrVal(rowgroup::Row& row,
+							FunctionParm& parm,
+							bool& isNull,
+							CalpontSystemCatalog::ColType&)
+{
+	const string& val = parm[0]->data()->getStrVal(row, isNull);
+
+	return val.substr(0,10);
+}
+
+
+} // namespace funcexp
+// vim:ts=4 sw=4: