Global level hints. More...

#include <opt_hints.h>

Inheritance diagram for Opt_hints_global:

Public Member Functions
	Opt_hints_global (MEM_ROOT *mem_root_arg)

void	append_name (const THD , String ) override

PT_hint *	get_complex_hints (opt_hints_enum type) override
	Returns pointer to complex hint for a given type. More...

void	print_irregular_hints (const THD thd, String str) override
	Function prints hints which are non-standard and don't fit into existing hint infrastructure. More...

Public Member Functions inherited from Opt_hints
	Opt_hints (const LEX_CSTRING name_arg, Opt_hints parent_arg, MEM_ROOT *mem_root_arg)

virtual	~Opt_hints ()=default

bool	is_specified (opt_hints_enum type_arg) const

bool	set_switch (bool switch_state_arg, opt_hints_enum type_arg, bool check_parent)
	Function sets switch hint state. More...

bool	get_switch (opt_hints_enum type_arg) const
	Function returns switch hint state. More...

virtual const LEX_CSTRING *	get_name () const

virtual const LEX_CSTRING *	get_print_name ()

void	set_name (const LEX_CSTRING *name_arg)

Opt_hints *	get_parent () const

virtual void	set_resolved ()

virtual bool	is_resolved (opt_hints_enum type_arg)
	Returns 'resolved' flag value for depending on hint type. More...

virtual void	set_unresolved (opt_hints_enum type_arg)
	Set hint to unresolved state. More...

virtual bool	ignore_print (opt_hints_enum type_arg) const
	If ignore_print() returns true, hint is not printed in Opt_hints::print() function. More...

void	incr_resolved_children ()

Mem_root_array< Opt_hints * > *	child_array_ptr ()

bool	is_all_resolved () const

void	register_child (Opt_hints *hint_arg)

Opt_hints *	find_by_name (const LEX_CSTRING name_arg, const CHARSET_INFO cs) const
	Find hint among lower-level hint objects. More...

void	print (const THD thd, String str, enum_query_type query_type)
	Print all hints except of QB_NAME hint. More...

void	check_unresolved (THD *thd)
	Check if there are any unresolved hint objects and print warnings for them. More...

Public Attributes
PT_hint_max_execution_time *	max_exec_time

Sys_var_hint *	sys_var_hint

PT_hint_list *	deferred_hints

bool	deferred_hints_flag

Detailed Description

Global level hints.

Constructor & Destructor Documentation

◆ Opt_hints_global()

Opt_hints_global::Opt_hints_global ( MEM_ROOT * mem_root_arg )

inline

Member Function Documentation

◆ append_name()

void Opt_hints_global::append_name	(	const THD *	,
		String *
	)

inlineoverridevirtual

Implements Opt_hints.

◆ get_complex_hints()

PT_hint * Opt_hints_global::get_complex_hints ( opt_hints_enum type )

overridevirtual

Returns pointer to complex hint for a given type.

A complex hint is a hint that has arguments. (It is not just an on/off switch.)

Parameters

type hint type

Returns: pointer to complex hint for a given type.

Reimplemented from Opt_hints.

◆ print_irregular_hints()

void Opt_hints_global::print_irregular_hints	(	const THD *	thd,
		String *	str
	)

overridevirtual

Function prints hints which are non-standard and don't fit into existing hint infrastructure.

Parameters

thd	pointer to THD object
str	pointer to String object

Reimplemented from Opt_hints.

Member Data Documentation

◆ deferred_hints

PT_hint_list* Opt_hints_global::deferred_hints

◆ deferred_hints_flag

bool Opt_hints_global::deferred_hints_flag

◆ max_exec_time

PT_hint_max_execution_time* Opt_hints_global::max_exec_time

◆ sys_var_hint

Sys_var_hint* Opt_hints_global::sys_var_hint

The documentation for this class was generated from the following files:

sql/opt_hints.h
sql/opt_hints.cc

Public Member Functions

Public Attributes