IndexScanPhysicalOperator类 参考

索引扫描物理算子 更多...

#include <index_scan_physical_operator.h>

类 IndexScanPhysicalOperator 继承关系图:

Public 成员函数
	IndexScanPhysicalOperator (Table *table, Index *index, bool readonly, const Value *left_value, bool left_inclusive, const Value *right_value, bool right_inclusive)
PhysicalOperatorType	type () const override
std::string	param () 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
Trx *	trx_ = nullptr
Table *	table_ = nullptr
Index *	index_ = nullptr
bool	readonly_ = false
IndexScanner *	index_scanner_ = nullptr
RecordFileHandler *	record_handler_ = nullptr
RecordPageHandler	record_page_handler_
Record	current_record_
RowTuple	tuple_
Value	left_value_
Value	right_value_
bool	left_inclusive_ = false
bool	right_inclusive_ = false
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

索引扫描物理算子

成员函数说明

close()

RC IndexScanPhysicalOperator::close ( )

overridevirtual

实现了 PhysicalOperator.

current_tuple()

Tuple * IndexScanPhysicalOperator::current_tuple ( )

overridevirtual

实现了 PhysicalOperator.

next()

RC IndexScanPhysicalOperator::next ( )

overridevirtual

实现了 PhysicalOperator.

open()

RC IndexScanPhysicalOperator::open ( Trx *  trx )

overridevirtual

实现了 PhysicalOperator.

param()

std::string IndexScanPhysicalOperator::param ( ) const

overridevirtual

重载 PhysicalOperator .

type()

PhysicalOperatorType IndexScanPhysicalOperator::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/index_scan_physical_operator.h
• src/observer/sql/operator/index_scan_physical_operator.cpp