与LogicalOperator对应，物理算子描述执行计划将如何执行更多...

类 PhysicalOperator 继承关系图:

Public 成员函数
virtual string	name () const

virtual string	param () const

bool	is_physical () const override

bool	is_logical () const override

virtual PhysicalOperatorType	type () const =0

virtual RC	open (Trx *trx)=0

virtual RC	next ()

virtual RC	next (Chunk &chunk)

virtual RC	close ()=0

virtual Tuple *	current_tuple ()

virtual RC	tuple_schema (TupleSchema &schema) const

void	add_child (unique_ptr< PhysicalOperator > oper)

vector< unique_ptr< PhysicalOperator > > &	children ()

Public 成员函数继承自 OperatorNode
virtual OpType	get_op_type () const

virtual bool	is_physical () const =0

virtual bool	is_logical () const =0

virtual uint64_t	hash () const

virtual bool	operator== (const OperatorNode &other) const

virtual unique_ptr< LogicalProperty >	find_log_prop (const vector< LogicalProperty * > &log_props)
	Generate the logical property of the operator node using the input logical properties. 更多...

virtual double	calculate_cost (LogicalProperty prop, const vector< LogicalProperty > &child_log_props, CostModel *cm)
	Calculates the cost of a logical operation. 更多...

void	add_general_child (OperatorNode *child)

vector< OperatorNode * > &	get_general_children ()

Protected 属性
vector< unique_ptr< PhysicalOperator > >	children_

Protected 属性继承自 OperatorNode
vector< OperatorNode * >	general_children_

详细描述

与LogicalOperator对应，物理算子描述执行计划将如何执行

成员函数说明

bool PhysicalOperator::is_logical ( ) const

inlineoverridevirtual

bool PhysicalOperator::is_physical ( ) const

inlineoverridevirtual

string PhysicalOperator::name ( ) const

virtual

这两个函数是为了打印时使用的，比如在explain中

该类的文档由以下文件生成: