the begginning

utils/funcexp/func_crc32.cpp

@@ -0,0 +1,59 @@
+/* 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_crc32.cpp 3923 2013-06-19 21:43:06Z bwilkinson $
+*
+*
+****************************************************************************/
+
+#include <unistd.h>
+#include <cstdlib>
+#include <string>
+#include <sstream>
+using namespace std;
+
+#include "functor_int.h"
+#include "functioncolumn.h"
+#include "rowgroup.h"
+using namespace execplan;
+
+#ifndef _MSC_VER
+#include "zlib.h"
+#endif
+
+namespace funcexp
+{
+
+CalpontSystemCatalog::ColType Func_crc32::operationType( FunctionParm& fp, CalpontSystemCatalog::ColType& resultType )
+{
+	return resultType;
+}
+
+
+int64_t Func_crc32::getIntVal(rowgroup::Row& row,
+						FunctionParm& parm,
+						bool& isNull,
+						CalpontSystemCatalog::ColType& ct)
+{
+	const string& val = parm[0]->data()->getStrVal(row, isNull);
+	return (int64_t) crc32(0L, (unsigned char*)val.c_str(), strlen(val.c_str()));
+}
+
+
+} // namespace funcexp
+// vim:ts=4 sw=4: