Inheritance diagram for Diagnostics_information_item:

Public Member Functions
bool	set_value (THD thd, Item *value)
Protected Member Functions
	Diagnostics_information_item (Item *target)
virtual	~Diagnostics_information_item ()

Detailed Description

A diagnostics information item. Used to associate a specific diagnostics information item to a target variable.

Constructor & Destructor Documentation

Diagnostics_information_item::Diagnostics_information_item ( Item * target ) [inline, protected]

Constructor, used to represent a diagnostics information item.

Parameters:

target A target that gets the value of this item.

virtual Diagnostics_information_item::~Diagnostics_information_item ( ) [inline, protected, virtual]

Diagnostics_information_item objects are allocated in thd->mem_root. Do not rely on the destructor for any cleanup.

bool Diagnostics_information_item::set_value	(	THD *	thd,
		Item **	value
	)

Set a value for this item.

Parameters:

thd	The current thread.
value	The obtained value.

Return values:

false	on success.
true	on error.

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