the begginning

utils/windowfunction/wf_row_number.cpp

@@ -0,0 +1,96 @@
+/* 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: wf_row_number.cpp 3932 2013-06-25 16:08:10Z xlou $
+
+
+//#define NDEBUG
+#include <cassert>
+#include <cmath>
+#include <sstream>
+#include <iomanip>
+using namespace std;
+
+#include <boost/shared_ptr.hpp>
+using namespace boost;
+
+#include "loggingid.h"
+#include "errorcodes.h"
+#include "idberrorinfo.h"
+using namespace logging;
+
+#include "rowgroup.h"
+using namespace rowgroup;
+
+#include "idborderby.h"
+using namespace ordering;
+
+#include "joblisttypes.h"
+#include "calpontsystemcatalog.h"
+using namespace execplan;
+
+#include "windowfunctionstep.h"
+using namespace joblist;
+
+#include "wf_row_number.h"
+
+
+namespace windowfunction
+{
+
+
+boost::shared_ptr<WindowFunctionType> WF_row_number::makeFunction(int id, const string& name, int ct)
+{
+	boost::shared_ptr<WindowFunctionType> func(new WF_row_number(id, name));
+	return func;
+}
+
+
+WindowFunctionType* WF_row_number::clone() const
+{
+	return new WF_row_number(*this);
+}
+
+
+void WF_row_number::resetData()
+{
+	fRowNumber= 0;
+
+	WindowFunctionType::resetData();
+}
+
+
+void WF_row_number::operator()(int64_t b, int64_t e, int64_t c)
+{
+	b = fPartition.first;
+	e = fPartition.second;
+	for (c = b; c <= e; c++)
+	{
+		if (c % 1000 == 0 && fStep->cancelled())
+			break;
+
+		fRow.setData(getPointer(fRowData->at(c)));
+		fRowNumber++;
+
+		setIntValue(fFieldIndex[0], fRowNumber);
+	}
+}
+
+
+}   //namespace
+// vim:ts=4 sw=4:
+