set_var_user Class Reference

#include <set_var.h>

Inheritance diagram for set_var_user:

Public Member Functions
	set_var_user (Item_func_set_user_var *item)
int	resolve (THD *thd) override
	Check privileges & fix_fields. More...
int	check (THD *thd) override
	Evaluate the expression. More...
int	update (THD *thd) override
	Set the value. More...
int	light_check (THD *thd) override
	Check variable, but without assigning value (used by PS). More...
bool	print (const THD *thd, String *str) override
	To self-print. More...
Public Member Functions inherited from set_var_base
	set_var_base ()=default
virtual	~set_var_base ()=default
virtual bool	is_var_optimizer_trace () const
virtual void	cleanup ()
virtual bool	is_sensitive () const
	Used to identify if variable is sensitive or not. More...

Private Attributes
Item_func_set_user_var *	user_var_item

Constructor & Destructor Documentation

set_var_user()

set_var_user::set_var_user ( Item_func_set_user_var *  item )

inline

Member Function Documentation

check()

int set_var_user::check ( THD *  thd )

overridevirtual

Evaluate the expression.

Implements set_var_base.

light_check()

int set_var_user::light_check ( THD *  thd )

overridevirtual

Check variable, but without assigning value (used by PS).

Parameters

thd	thread handler

Return values

0	ok
1	ERROR, message sent (normally no variables was updated)
-1	ERROR, message not sent

Reimplemented from set_var_base.

print()

bool set_var_user::print ( const THD *  thd, String *  str  )

overridevirtual

To self-print.

Implements set_var_base.

resolve()

int set_var_user::resolve ( THD *  thd )

overridevirtual

Check privileges & fix_fields.

Implements set_var_base.

update()

int set_var_user::update ( THD *  thd )

overridevirtual

Set the value.

Implements set_var_base.

Member Data Documentation

user_var_item

Item_func_set_user_var* set_var_user::user_var_item

private

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

• sql/set_var.h
• sql/set_var.cc