You've already forked mariadb-columnstore-engine
mirror of
https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
synced 2025-11-03 17:13:17 +03:00
93 lines
2.3 KiB
C++
93 lines
2.3 KiB
C++
/*
|
|
Copyright (c) 2017, MariaDB
|
|
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.
|
|
*/
|
|
|
|
#pragma once
|
|
#include <string>
|
|
#include <iosfwd>
|
|
#include <vector>
|
|
|
|
#include "returnedcolumn.h"
|
|
|
|
/**
|
|
* Namespace
|
|
*/
|
|
namespace execplan
|
|
{
|
|
// This enum is made consistant with mysql Item_window_func
|
|
enum WF_FRAME
|
|
{
|
|
WF_PRECEDING = 0,
|
|
WF_FOLLOWING,
|
|
WF_UNBOUNDED_PRECEDING,
|
|
WF_UNBOUNDED_FOLLOWING,
|
|
WF_CURRENT_ROW,
|
|
WF_UNKNOWN
|
|
};
|
|
|
|
struct WF_Boundary
|
|
{
|
|
WF_Boundary() = default;
|
|
explicit WF_Boundary(WF_FRAME frame) : fFrame(frame)
|
|
{
|
|
}
|
|
~WF_Boundary() = default;
|
|
const std::string toString() const;
|
|
void serialize(messageqcpp::ByteStream&) const;
|
|
void unserialize(messageqcpp::ByteStream&);
|
|
SRCP fVal; /// has to evaluate to unsigned value
|
|
SRCP fBound; /// order by col +, -, date_add or date_sub for RANGE window
|
|
enum WF_FRAME fFrame;
|
|
};
|
|
|
|
struct WF_Frame
|
|
{
|
|
WF_Frame() : fIsRange(true)
|
|
{
|
|
fStart.fFrame = WF_UNBOUNDED_PRECEDING;
|
|
fEnd.fFrame = WF_UNBOUNDED_FOLLOWING;
|
|
}
|
|
~WF_Frame() = default;
|
|
const std::string toString() const;
|
|
void serialize(messageqcpp::ByteStream&) const;
|
|
void unserialize(messageqcpp::ByteStream&);
|
|
WF_Boundary fStart;
|
|
WF_Boundary fEnd;
|
|
bool fIsRange; /// RANGE or ROWS
|
|
};
|
|
|
|
/**
|
|
* @brief A class to represent the order by clause of window function
|
|
*/
|
|
struct WF_OrderBy
|
|
{
|
|
WF_OrderBy() = default;
|
|
explicit WF_OrderBy(std::vector<SRCP> orders) : fOrders(orders)
|
|
{
|
|
}
|
|
~WF_OrderBy() = default;
|
|
const std::string toString() const;
|
|
void serialize(messageqcpp::ByteStream&) const;
|
|
void unserialize(messageqcpp::ByteStream&);
|
|
std::vector<SRCP> fOrders;
|
|
WF_Frame fFrame;
|
|
};
|
|
|
|
} // namespace execplan
|