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@ -17,7 +17,6 @@
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// $Id: windowfunction.h 3932 2013-06-25 16:08:10Z xlou $
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#pragma once
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#include <vector>
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@ -33,93 +32,83 @@ namespace ordering
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// forward reference
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class EqualCompData;
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class OrderByData;
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};
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}; // namespace ordering
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namespace windowfunction
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{
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// forward reference
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class WindowFunctionType;
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class WindowFrame;
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/** @brief class WindowFunction
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*
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*/
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class WindowFunction
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{
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public:
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/** @brief WindowFunction constructor
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* @param f: shared pointer to a WindowFuncitonType
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* @param p: shared pointer to equal compare functor
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* @param o: shared pointer to order by functor
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* @param w: shared pointer to window specification
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* @param r: row meta data
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*/
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WindowFunction(boost::shared_ptr<WindowFunctionType>& f,
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boost::shared_ptr<ordering::EqualCompData>& p,
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boost::shared_ptr<ordering::OrderByData>& o,
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boost::shared_ptr<WindowFrame>& w,
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const rowgroup::RowGroup& g,
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const rowgroup::Row& r);
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public:
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/** @brief WindowFunction constructor
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* @param f: shared pointer to a WindowFuncitonType
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* @param p: shared pointer to equal compare functor
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* @param o: shared pointer to order by functor
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* @param w: shared pointer to window specification
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* @param r: row meta data
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*/
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WindowFunction(boost::shared_ptr<WindowFunctionType>& f, boost::shared_ptr<ordering::EqualCompData>& p,
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boost::shared_ptr<ordering::OrderByData>& o, boost::shared_ptr<WindowFrame>& w,
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const rowgroup::RowGroup& g, const rowgroup::Row& r);
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/** @brief WindowFunction destructor
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*/
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virtual ~WindowFunction();
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/** @brief WindowFunction destructor
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*/
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virtual ~WindowFunction();
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/** @brief virtual void Run method
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*/
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void operator()();
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/** @brief virtual void Run method
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*/
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void operator()();
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const std::string toString() const;
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const std::string toString() const;
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void setCallback(joblist::WindowFunctionStep*, int);
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const rowgroup::Row& getRow() const;
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void setCallback(joblist::WindowFunctionStep*, int);
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const rowgroup::Row& getRow() const;
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protected:
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// cancellable sort function
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void sort(std::vector<joblist::RowPosition>::iterator, uint64_t);
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protected:
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// special window frames
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void processUnboundedWindowFrame1();
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void processUnboundedWindowFrame2();
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void processUnboundedWindowFrame3();
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void processExprWindowFrame();
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// cancellable sort function
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void sort(std::vector<joblist::RowPosition>::iterator, uint64_t);
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// for string table
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rowgroup::Row::Pointer getPointer(joblist::RowPosition& r)
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{
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return fStep->getPointer(r, fRowGroup, fRow);
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}
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// special window frames
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void processUnboundedWindowFrame1();
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void processUnboundedWindowFrame2();
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void processUnboundedWindowFrame3();
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void processExprWindowFrame();
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// function type
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boost::shared_ptr<WindowFunctionType> fFunctionType;
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// for string table
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rowgroup::Row::Pointer getPointer(joblist::RowPosition& r)
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{
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return fStep->getPointer(r, fRowGroup, fRow);
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}
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// window clause
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boost::shared_ptr<ordering::EqualCompData> fPartitionBy;
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boost::shared_ptr<ordering::OrderByData> fOrderBy;
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boost::shared_ptr<WindowFrame> fFrame;
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std::vector<std::pair<int64_t, int64_t> > fPartition;
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// function type
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boost::shared_ptr<WindowFunctionType> fFunctionType;
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// data
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boost::shared_ptr<std::vector<joblist::RowPosition> > fRowData;
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// window clause
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boost::shared_ptr<ordering::EqualCompData> fPartitionBy;
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boost::shared_ptr<ordering::OrderByData> fOrderBy;
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boost::shared_ptr<WindowFrame> fFrame;
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std::vector<std::pair<int64_t, int64_t> > fPartition;
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// row meta data
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rowgroup::RowGroup fRowGroup;
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rowgroup::Row fRow;
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// data
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boost::shared_ptr<std::vector<joblist::RowPosition> > fRowData;
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// pointer back to step
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joblist::WindowFunctionStep* fStep;
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int fId;
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// row meta data
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rowgroup::RowGroup fRowGroup;
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rowgroup::Row fRow;
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// pointer back to step
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joblist::WindowFunctionStep* fStep;
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int fId;
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friend class joblist::WindowFunctionStep;
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friend class joblist::WindowFunctionStep;
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};
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} // namespace
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} // namespace windowfunction
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// vim:ts=4 sw=4:
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