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https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
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3919c541ac
* Fix clang warnings * Remove vim tab guides * initialize variables * 'strncpy' output truncated before terminating nul copying as many bytes from a string as its length * Fix ISO C++17 does not allow 'register' storage class specifier for outdated bison * chars are unsigned on ARM, having if (ival < 0) always false * chars are unsigned by default on ARM and comparison with -1 if always true
148 lines
3.2 KiB
C++
148 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: framebound.h 3932 2013-06-25 16:08:10Z xlou $
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#pragma once
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#include <boost/shared_ptr.hpp>
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#include "rowgroup.h"
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#include "windowfunctionstep.h"
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namespace ordering
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{
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// forward reference
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class EqualCompData;
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}; // namespace ordering
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namespace windowfunction
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{
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const int WF__UNBOUNDED_PRECEDING = 0;
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const int WF__CONSTANT_PRECEDING = 1;
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const int WF__EXPRESSION_PRECEDING = 2;
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const int WF__CURRENT_ROW = 3;
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const int WF__UNBOUNDED_FOLLOWING = 4;
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const int WF__CONSTANT_FOLLOWING = 5;
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const int WF__EXPRESSION_FOLLOWING = 6;
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const int WF__BOUND_ALL = -1; // unbounded - unbounded
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const int WF__BOUND_ROLLING = -2; // unbounded - current row
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/** @brief class FrameBound
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*
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*/
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class FrameBound
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{
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public:
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/** @brief FrameBound constructor
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* @param t, frame type
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*/
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FrameBound(int t = 0) : fBoundType(t), fStart(true){};
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/** @brief FrameBound destructor
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*/
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virtual ~FrameBound(){};
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/** @brief clone
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*/
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virtual FrameBound* clone()
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{
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return new FrameBound(*this);
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}
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/** @brief virtual void getBound
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* @param b: partition start position
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* @param e: partition end position
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* @param c: current position
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* @return : frame position
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*/
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virtual int64_t getBound(int64_t b, int64_t e, int64_t c);
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virtual const std::string toString() const;
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void setRowData(const boost::shared_ptr<std::vector<joblist::RowPosition> >& d)
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{
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fRowData = d;
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}
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void setRowMetaData(const rowgroup::RowGroup& g, const rowgroup::Row& r)
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{
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fRowGroup = g;
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fRow = r;
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}
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int64_t boundType() const
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{
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return fBoundType;
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}
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void boundType(int64_t t)
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{
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fBoundType = t;
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}
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bool start() const
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{
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return fStart;
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}
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void start(bool s)
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{
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fStart = s;
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}
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const boost::shared_ptr<ordering::EqualCompData>& peer() const
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{
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return fPeer;
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}
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void peer(const boost::shared_ptr<ordering::EqualCompData>& p)
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{
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fPeer = p;
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}
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// for string table
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void setCallback(joblist::WindowFunctionStep* step)
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{
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fStep = step;
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}
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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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protected:
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// boundary type
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int64_t fBoundType;
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bool fStart;
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// data
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boost::shared_ptr<std::vector<joblist::RowPosition> > fRowData;
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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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// functor for peer checking
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boost::shared_ptr<ordering::EqualCompData> fPeer;
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// pointer back to step
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joblist::WindowFunctionStep* fStep;
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};
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extern std::map<int, std::string> colType2String;
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} // namespace windowfunction
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