the begginning

utils/common/nullvaluemanip.h

@@ -0,0 +1,34 @@
+/* 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. */
+
+
+#ifndef NULLVALUEMANIP_H
+#define NULLVALUEMANIP_H
+
+#include "calpontsystemcatalog.h"
+
+namespace utils {
+
+// returns the NULL value for our 'numeric' types including short strings.
+// The width is only relevant for long string columns.
+uint64_t getNullValue(execplan::CalpontSystemCatalog::ColDataType, uint32_t colWidth = 0);
+int64_t getSignedNullValue(execplan::CalpontSystemCatalog::ColDataType, uint32_t colWidth = 0);
+
+
+}
+
+#endif // NULLVALUEMANIP_H