the begginning

utils/windowfunction/windowframe.h

@@ -0,0 +1,100 @@
+/* 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: windowframe.h 3932 2013-06-25 16:08:10Z xlou $
+
+
+#ifndef UTILS_WINDOWFRAME_H
+#define UTILS_WINDOWFRAME_H
+
+#include <utility>              // std::pair, std::make_pair
+#include <boost/shared_ptr.hpp>
+#include "framebound.h"
+
+namespace windowfunction
+{
+
+const int64_t WF__FRAME_ROWS  = 0;
+const int64_t WF__FRAME_RANGE = 1;
+
+
+/** @brief class WindowFrame
+ *
+ */
+class WindowFrame
+{
+public:
+	/** @brief WindowFrame constructor
+	 */
+	WindowFrame(int64_t t, boost::shared_ptr<FrameBound>& u, boost::shared_ptr<FrameBound>& l) :
+		fUnit(t), fUpper(u), fLower(l)
+	{}
+
+	/** @brief WindowFrame copy constructor
+	 */
+	WindowFrame(const WindowFrame& rhs) :
+		fUnit(rhs.fUnit),
+		fUpper(rhs.fUpper->clone()),
+		fLower(rhs.fLower->clone())
+	{}
+
+	/** @brief WindowFrame destructor
+	 */
+	virtual ~WindowFrame() {};
+
+	/** @brief clone
+	 */
+	virtual WindowFrame* clone() { return new WindowFrame(*this); };
+
+	/** @brief virtual void getWindow
+	 */
+	std::pair<uint64_t, uint64_t> getWindow(int64_t, int64_t, int64_t);
+
+	const std::string toString() const;
+
+	/** @brief set methods
+	 */
+	void setRowMetaData(const rowgroup::RowGroup& g, const rowgroup::Row& r)
+			{ fUpper->setRowMetaData(g, r); fLower->setRowMetaData(g, r); }
+	void setRowData(boost::shared_ptr<std::vector<joblist::RowPosition> >& d)
+			{ fUpper->setRowData(d); fLower->setRowData(d); }
+	void setCallback(joblist::WindowFunctionStep* s)
+			{ fUpper->setCallback(s); fLower->setCallback(s); }
+
+	int64_t unit() const { return fUnit; }
+	void unit(int64_t t) { fUnit = t;    }
+	const boost::shared_ptr<FrameBound>& upper() const { return fUpper; }
+	void upper(const boost::shared_ptr<FrameBound>& u) { fUpper = u;    }
+	const boost::shared_ptr<FrameBound>& lower() const { return fLower; }
+	void lower(const boost::shared_ptr<FrameBound>& l) { fLower = l;    }
+
+protected:
+
+	// type
+	int64_t                                  fUnit;
+
+	// data
+	boost::shared_ptr<FrameBound>            fUpper;
+	boost::shared_ptr<FrameBound>            fLower;
+};
+
+
+} // namespace
+
+#endif  // UTILS_WINDOWFRAME_H
+
+// vim:ts=4 sw=4: