the begginning

utils/windowfunction/frameboundrow.cpp

@@ -0,0 +1,154 @@
+/* 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: frameboundrow.cpp 3932 2013-06-25 16:08:10Z xlou $
+
+
+//#define NDEBUG
+#include <cassert>
+#include <cmath>
+#include <sstream>
+#include <iomanip>
+using namespace std;
+
+#include "idberrorinfo.h"
+#include "errorids.h"
+#include "exceptclasses.h"
+using namespace logging;
+
+#include "idborderby.h"
+using namespace ordering;
+
+#include "treenode.h"
+#include "frameboundrow.h"
+
+
+namespace windowfunction
+{
+
+
+int64_t FrameBoundRow::getBound(int64_t b, int64_t e, int64_t c)
+{
+	return c;
+}
+
+
+const string FrameBoundRow::toString() const
+{
+	return FrameBound::toString();
+}
+
+
+int64_t FrameBoundConstantRow::getBound(int64_t b, int64_t e, int64_t c)
+{
+	if (fBoundType < WF__CURRENT_ROW)
+	{
+		if (fOffset <= (c - b))
+			c -= fOffset;
+		else
+			c = b - (!fStart ? 1 : 0);
+	}
+	else
+	{
+		if (fOffset <= (e - c))
+			c += fOffset;
+		else
+			c = e + (fStart ? 1 : 0);
+	}
+
+	return c;
+}
+
+
+const string FrameBoundConstantRow::toString() const
+{
+    ostringstream oss;
+	oss << fOffset << " " << FrameBound::toString();
+	return oss.str();
+}
+
+
+template<typename T>
+int64_t FrameBoundExpressionRow<T>::getBound(int64_t b, int64_t e, int64_t c)
+{
+	// set row data
+	// get expression int value
+	fRow.setData(getPointer(fRowData->at(c)));
+
+	if (fRow.isNullValue(fExprIdx))
+		throw IDBExcept(IDBErrorInfo::instance()->errorMsg(ERR_WF_BOUND_OUT_OF_RANGE, "NULL"),
+						ERR_WF_BOUND_OUT_OF_RANGE);
+
+	getOffset();
+
+	if (fOffset < 0)
+	{
+		throw IDBExcept(IDBErrorInfo::instance()->errorMsg(ERR_WF_BOUND_OUT_OF_RANGE, fOffset),
+				ERR_WF_BOUND_OUT_OF_RANGE);
+	}
+
+	return FrameBoundConstantRow::getBound(b, e, c);
+}
+
+
+template<typename T>
+const string FrameBoundExpressionRow<T>::toString() const
+{
+    ostringstream oss;
+	oss << "value_expr " << FrameBound::toString();
+	return oss.str();
+}
+
+
+template<typename T> void FrameBoundExpressionRow<T>::getOffset()
+{
+}
+
+
+template<> void FrameBoundExpressionRow<int64_t>::getOffset()
+{
+	fOffset = fRow.getIntField(fExprIdx);
+}
+
+
+template<> void FrameBoundExpressionRow<uint64_t>::getOffset()
+{
+	fOffset = fRow.getUintField(fExprIdx);
+}
+
+
+template<> void FrameBoundExpressionRow<double>::getOffset()
+{
+	fOffset = (int64_t) fRow.getDoubleField(fExprIdx);
+}
+
+
+template<> void FrameBoundExpressionRow<float>::getOffset()
+{
+	fOffset = (int64_t) fRow.getFloatField(fExprIdx);
+}
+
+
+template class FrameBoundExpressionRow<int64_t>;
+template class FrameBoundExpressionRow<double>;
+template class FrameBoundExpressionRow<float>;
+template class FrameBoundExpressionRow<uint64_t>;
+
+
+}   //namespace
+// vim:ts=4 sw=4:
+