A derived from THD::Attachable_trx class allows updates in the attachable transaction. More...

Inheritance diagram for THD::Attachable_trx_rw:

Public Member Functions
bool	is_read_only () const override

	Attachable_trx_rw (THD *thd)

Public Member Functions inherited from THD::Attachable_trx
	Attachable_trx (THD thd, Attachable_trx prev_trx)

virtual	~Attachable_trx ()

Attachable_trx *	get_prev_attachable_trx () const

Private Member Functions
	Attachable_trx_rw (const Attachable_trx_rw &)

Attachable_trx_rw &	operator= (const Attachable_trx_rw &)

Additional Inherited Members
Protected Attributes inherited from THD::Attachable_trx
THD *	m_thd
	THD instance. More...

enum_reset_lex	m_reset_lex

Attachable_trx *	m_prev_attachable_trx
	Attachable_trx which was active for the THD before when this transaction was started (NULL in most cases). More...

Transaction_state	m_trx_state
	Transaction state data. More...

Detailed Description

A derived from THD::Attachable_trx class allows updates in the attachable transaction.

Callers of the class methods must make sure the attachable_rw won't cause deadlock with the main transaction. The destructor does not invoke ha_commit_{stmt,trans} nor ha_rollback_trans on purpose. Burden to terminate the read-write instance also lies on the caller! In order to use this interface it MUST prove that no side effect to the global transaction state can be inflicted by a chosen method.

This class is being used only by class Gtid_table_access_context by replication and by dd::info_schema::Table_statistics.

Constructor & Destructor Documentation

◆ Attachable_trx_rw() [1/2]

THD::Attachable_trx_rw::Attachable_trx_rw ( THD * thd )

explicit

◆ Attachable_trx_rw() [2/2]

THD::Attachable_trx_rw::Attachable_trx_rw ( const Attachable_trx_rw & )

private

Member Function Documentation

◆ is_read_only()

bool THD::Attachable_trx_rw::is_read_only ( ) const

inlineoverridevirtual

Reimplemented from THD::Attachable_trx.

◆ operator=()

Attachable_trx_rw & THD::Attachable_trx_rw::operator= ( const Attachable_trx_rw & )

private

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

sql/sql_class.h
sql/sql_class.cc

Public Member Functions

Private Member Functions