THD::Attachable_trx Class Reference

Class representing read-only attachable transaction, encapsulates knowledge how to backup state of current transaction, start read-only attachable transaction in SE, finalize it and then restore state of original transaction back. More...

Inheritance diagram for THD::Attachable_trx:

Public Member Functions
	Attachable_trx (THD *thd, Attachable_trx *prev_trx)
virtual	~Attachable_trx ()
Attachable_trx *	get_prev_attachable_trx () const
virtual bool	is_read_only () const

Protected Attributes
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...

Private Member Functions
	Attachable_trx (const Attachable_trx &)
Attachable_trx &	operator= (const Attachable_trx &)

Detailed Description

Class representing read-only attachable transaction, encapsulates knowledge how to backup state of current transaction, start read-only attachable transaction in SE, finalize it and then restore state of original transaction back.

Also serves as a base class for read-write attachable transaction implementation.

Constructor & Destructor Documentation

Attachable_trx() [1/2]

THD::Attachable_trx::Attachable_trx	(	THD *	thd,
		Attachable_trx *	prev_trx
	)

~Attachable_trx()

THD::Attachable_trx::~Attachable_trx ( )

virtual

Attachable_trx() [2/2]

THD::Attachable_trx::Attachable_trx ( const Attachable_trx &  )

private

Member Function Documentation

get_prev_attachable_trx()

Attachable_trx * THD::Attachable_trx::get_prev_attachable_trx ( ) const

inline

is_read_only()

virtual bool THD::Attachable_trx::is_read_only ( ) const

inlinevirtual

Reimplemented in THD::Attachable_trx_rw.

operator=()

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

private

Member Data Documentation

m_prev_attachable_trx

Attachable_trx* THD::Attachable_trx::m_prev_attachable_trx

protected

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

m_reset_lex

enum_reset_lex THD::Attachable_trx::m_reset_lex

protected

m_thd

THD* THD::Attachable_trx::m_thd

protected

THD instance.

m_trx_state

Transaction_state THD::Attachable_trx::m_trx_state

protected

Transaction state data.

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

• sql/sql_class.h
• sql/sql_class.cc