OptimizeInputs类 参考

#include <o_input_task.h>

类 OptimizeInputs 继承关系图:

Public 成员函数
	OptimizeInputs (GroupExpr *group_expr, OptimizerContext *context)
	OptimizeInputs (OptimizeInputs *task)
void	perform () override
Public 成员函数 继承自 CascadeTask
	CascadeTask (OptimizerContext *context, CascadeTaskType type)
virtual void	perform ()=0
Memo &	get_memo () const
RuleSet &	get_rule_set () const
void	push_task (CascadeTask *task)

Private 属性
GroupExpr *	group_expr_
double	cur_total_cost_
int	cur_child_idx_ = -1
int	prev_child_idx_ = -1

额外继承的成员函数
Protected 属性 继承自 CascadeTask
CascadeTaskType	type_
OptimizerContext *	context_

详细描述

OptimizeInputs

成员函数说明

perform()

void OptimizeInputs::perform ( )

overridevirtual

实现了 CascadeTask.

类成员变量说明

cur_child_idx_

int OptimizeInputs::cur_child_idx_ = -1

private

input currently being or about to be optimized

prev_child_idx_

int OptimizeInputs::prev_child_idx_ = -1

private

keep track of the previous optimized input idx

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该类的文档由以下文件生成:

• src/observer/sql/optimizer/cascade/tasks/o_input_task.h
• src/observer/sql/optimizer/cascade/tasks/o_input_task.cpp