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139 lines
3.2 KiB
C++
139 lines
3.2 KiB
C++
/* Copyright (C) 2014 InfiniDB, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; version 2 of
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the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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// $Id: frameboundrow.cpp 3932 2013-06-25 16:08:10Z xlou $
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// #define NDEBUG
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#include <cmath>
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#include <sstream>
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using namespace std;
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#include "idberrorinfo.h"
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#include "errorids.h"
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#include "exceptclasses.h"
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using namespace logging;
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#include "idborderby.h"
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using namespace ordering;
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#include "frameboundrow.h"
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namespace windowfunction
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{
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int64_t FrameBoundRow::getBound(int64_t /*b*/, int64_t /*e*/, int64_t c)
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{
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return c;
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}
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const string FrameBoundRow::toString() const
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{
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return FrameBound::toString();
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}
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int64_t FrameBoundConstantRow::getBound(int64_t b, int64_t e, int64_t c)
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{
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if (fBoundType < WF__CURRENT_ROW)
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{
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if (fOffset <= (c - b))
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c -= fOffset;
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else
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c = b - (!fStart ? 1 : 0);
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}
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else
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{
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if (fOffset <= (e - c))
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c += fOffset;
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else
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c = e + (fStart ? 1 : 0);
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}
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return c;
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}
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const string FrameBoundConstantRow::toString() const
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{
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ostringstream oss;
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oss << fOffset << " " << FrameBound::toString();
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return oss.str();
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}
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template <typename T>
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int64_t FrameBoundExpressionRow<T>::getBound(int64_t b, int64_t e, int64_t c)
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{
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// set row data
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// get expression int value
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fRow.setData(getPointer(fRowData->at(c)));
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if (fRow.isNullValue(fExprIdx))
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throw IDBExcept(IDBErrorInfo::instance()->errorMsg(ERR_WF_BOUND_OUT_OF_RANGE, "NULL"),
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ERR_WF_BOUND_OUT_OF_RANGE);
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getOffset();
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if (fOffset < 0)
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{
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throw IDBExcept(IDBErrorInfo::instance()->errorMsg(ERR_WF_BOUND_OUT_OF_RANGE, fOffset),
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ERR_WF_BOUND_OUT_OF_RANGE);
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}
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return FrameBoundConstantRow::getBound(b, e, c);
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}
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template <typename T>
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const string FrameBoundExpressionRow<T>::toString() const
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{
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ostringstream oss;
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oss << "value_expr " << FrameBound::toString();
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return oss.str();
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}
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template <typename T>
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void FrameBoundExpressionRow<T>::getOffset()
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{
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}
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template <>
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void FrameBoundExpressionRow<int64_t>::getOffset()
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{
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fOffset = fRow.getIntField(fExprIdx);
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}
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template <>
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void FrameBoundExpressionRow<uint64_t>::getOffset()
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{
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fOffset = fRow.getUintField(fExprIdx);
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}
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template <>
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void FrameBoundExpressionRow<double>::getOffset()
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{
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fOffset = (int64_t)fRow.getDoubleField(fExprIdx);
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}
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template <>
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void FrameBoundExpressionRow<float>::getOffset()
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{
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fOffset = (int64_t)fRow.getFloatField(fExprIdx);
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}
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template class FrameBoundExpressionRow<int64_t>;
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template class FrameBoundExpressionRow<double>;
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template class FrameBoundExpressionRow<float>;
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template class FrameBoundExpressionRow<uint64_t>;
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} // namespace windowfunction
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