This class represents SQL statement which rollbacks and terminates an XA transaction with the given xid value. More...

#include <xa.h>

Inheritance diagram for Sql_cmd_xa_rollback:

Public Member Functions
	Sql_cmd_xa_rollback (xid_t *xid_arg)

enum_sql_command	sql_command_code () const override
	Return the command code for this statement. More...

bool	execute (THD *thd) override
	Execute this SQL statement. More...

Public Member Functions inherited from Sql_cmd
bool	needs_explicit_preparation () const

bool	is_regular () const

bool	is_prepared () const

virtual bool	prepare (THD *)
	Prepare this SQL statement. More...

virtual void	cleanup (THD *)
	Command-specific reinitialization before execution of prepared statement. More...

void	set_owner (Prepared_statement *stmt)
	Set the owning prepared statement. More...

Prepared_statement *	owner () const
	Get the owning prepared statement. More...

void	set_as_part_of_sp ()
	Mark statement as part of procedure. More...

bool	is_part_of_sp () const

virtual bool	is_dml () const

virtual bool	is_single_table_plan () const

virtual bool	accept (THD , Select_lex_visitor )

virtual const MYSQL_LEX_CSTRING *	eligible_secondary_storage_engine () const
	Is this statement of a type and on a form that makes it eligible for execution in a secondary storage engine? More...

void	disable_secondary_storage_engine ()
	Disable use of secondary storage engines in this statement. More...

bool	secondary_storage_engine_disabled () const
	Has use of secondary storage engines been disabled for this statement? More...

void	use_secondary_storage_engine (const handlerton *hton)
	Mark the current statement as using a secondary storage engine. More...

bool	using_secondary_storage_engine () const
	Is this statement using a secondary storage engine? More...

const handlerton *	secondary_engine () const
	Get the handlerton of the secondary engine that is used for executing this statement, or nullptr if a secondary engine is not used. More...

void	set_optional_transform_prepared (bool value)

bool	is_optional_transform_prepared ()

Private Member Functions
bool	trans_xa_rollback (THD *thd)
	Roll back and terminate a XA transaction. More...

bool	process_external_xa_rollback (THD thd, xid_t xid, XID_STATE *xid_state)
	Handle the statement XA ROLLBACK for the case when xid corresponds to an external XA transaction, that it a transaction generated outside current session context. More...

bool	process_internal_xa_rollback (THD thd, XID_STATE xid_state)
	Handle the statement XA ROLLBACK for the case when xid corresponds to an internal XA transaction, that is a transaction generated by current session context. More...

Private Attributes
xid_t *	m_xid

Additional Inherited Members
Protected Member Functions inherited from Sql_cmd
	Sql_cmd ()

virtual	~Sql_cmd ()

void	set_prepared ()
	Set this statement as prepared. More...

Detailed Description

This class represents SQL statement which rollbacks and terminates an XA transaction with the given xid value.

Constructor & Destructor Documentation

◆ Sql_cmd_xa_rollback()

Sql_cmd_xa_rollback::Sql_cmd_xa_rollback ( xid_t * xid_arg )

inlineexplicit

Member Function Documentation

◆ execute()

bool Sql_cmd_xa_rollback::execute ( THD * thd )

overridevirtual

Execute this SQL statement.

Parameters

thd	the current thread.

Returns: false if success, true if error

Implements Sql_cmd.

◆ process_external_xa_rollback()

bool Sql_cmd_xa_rollback::process_external_xa_rollback	(	THD *	thd,
		xid_t *	external_xid,
		XID_STATE *	xid_state
	)

private

Handle the statement XA ROLLBACK for the case when xid corresponds to an external XA transaction, that it a transaction generated outside current session context.

Parameters

thd	Thread context
external_xid	XID value specified by XA ROLLBACK that corresponds to a XA transaction generated outside current session context. In fact, it means that XA ROLLBACK is run against a XA transaction recovered after server restart.
xid_state	State of XA transaction corresponding to the current session that expected to have the value XID_STATE::XA_NOTR

Returns: operation result

Return values

false	Success
true	Failure

◆ process_internal_xa_rollback()

bool Sql_cmd_xa_rollback::process_internal_xa_rollback	(	THD *	thd,
		XID_STATE *	xid_state
	)

private

Handle the statement XA ROLLBACK for the case when xid corresponds to an internal XA transaction, that is a transaction generated by current session context.

Parameters

thd	Thread context
xid_state	State of XA transaction corresponding to the current session.

Returns: operation result

Return values

false	Success
true	Failure

◆ sql_command_code()

enum_sql_command Sql_cmd_xa_rollback::sql_command_code ( ) const

inlineoverridevirtual

Return the command code for this statement.

Implements Sql_cmd.

◆ trans_xa_rollback()

bool Sql_cmd_xa_rollback::trans_xa_rollback ( THD * thd )

private

Roll back and terminate a XA transaction.

Parameters

thd	Current thread

Return values

false	Success
true	Failure

Member Data Documentation

◆ m_xid

xid_t* Sql_cmd_xa_rollback::m_xid

private

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

sql/xa.h
sql/xa.cc

Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ Sql_cmd_xa_rollback()

Member Function Documentation

◆ execute()

◆ process_external_xa_rollback()

◆ process_internal_xa_rollback()

◆ sql_command_code()

◆ trans_xa_rollback()

Member Data Documentation

◆ m_xid