TableScanPhysicalOperator类 参考

表扫描物理算子 更多...

#include <table_scan_physical_operator.h>

类 TableScanPhysicalOperator 继承关系图:

Public 成员函数
	TableScanPhysicalOperator (Table *table, bool readonly)
std::string	param () const override
PhysicalOperatorType	type () const override
RC	open (Trx *trx) override
RC	next () override
RC	close () override
Tuple *	current_tuple () override
void	set_predicates (std::vector< std::unique_ptr< Expression > > &&exprs)
Public 成员函数 继承自 PhysicalOperator
virtual std::string	name () const
virtual std::string	param () const
virtual PhysicalOperatorType	type () const =0
virtual RC	open (Trx *trx)=0
virtual RC	next ()=0
virtual RC	close ()=0
virtual Tuple *	current_tuple ()=0
void	add_child (std::unique_ptr< PhysicalOperator > oper)
std::vector< std::unique_ptr< PhysicalOperator > > &	children ()

Private 成员函数
RC	filter (RowTuple &tuple, bool &result)

Private 属性
Table *	table_ = nullptr
Trx *	trx_ = nullptr
bool	readonly_ = false
RecordFileScanner	record_scanner_
Record	current_record_
RowTuple	tuple_
std::vector< std::unique_ptr< Expression > >	predicates_

额外继承的成员函数
Protected 属性 继承自 PhysicalOperator
std::vector< std::unique_ptr< PhysicalOperator > >	children_

详细描述

表扫描物理算子

成员函数说明

close()

RC TableScanPhysicalOperator::close ( )

overridevirtual

实现了 PhysicalOperator.

current_tuple()

Tuple * TableScanPhysicalOperator::current_tuple ( )

overridevirtual

实现了 PhysicalOperator.

next()

RC TableScanPhysicalOperator::next ( )

overridevirtual

实现了 PhysicalOperator.

open()

RC TableScanPhysicalOperator::open ( Trx *  trx )

overridevirtual

实现了 PhysicalOperator.

param()

string TableScanPhysicalOperator::param ( ) const

overridevirtual

重载 PhysicalOperator .

type()

PhysicalOperatorType TableScanPhysicalOperator::type ( ) const

inlineoverridevirtual

实现了 PhysicalOperator.

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该类的文档由以下文件生成:

• src/observer/sql/operator/table_scan_physical_operator.h
• src/observer/sql/operator/table_scan_physical_operator.cpp