struct xid_t is binary compatible with the XID structure as in the X/Open CAE Specification, Distributed Transaction Processing: The XA Specification, X/Open Company Ltd., 1991. More...

#include <xa.h>

Public Member Functions
	xid_t ()

long	get_format_id () const

void	set_format_id (long v)

long	get_gtrid_length () const

void	set_gtrid_length (long v)

long	get_bqual_length () const

void	set_bqual_length (long v)

const char *	get_data () const

void	set_data (const void *v, long l)

void	reset ()

void	set (long f, const char g, long gl, const char b, long bl)

my_xid	get_my_xid () const

uchar *	key ()

const uchar *	key () const

uint	key_length () const

char *	serialize (char *buf) const
	The method fills XID in a buffer in format of GTRID,BQUAL,FORMATID where GTRID, BQUAL are represented as hex strings. More...

char *	xid_to_str (char *buf) const
	Get printable XID value. More...

bool	eq (const xid_t *xid) const
	Check if equal to another xid. More...

bool	is_null () const

xid_t &	operator= (binary_log::XA_prepare_event::MY_XID const &rhs)
	Instantiates this object with the contents of the parameter of type `XA_prepare_event::MY_XID`. More...

bool	operator== (struct xid_t const &rhs) const
	Compares for equality two instances of `xid_t`. More...

bool	operator!= (struct xid_t const &rhs) const
	Compares for inequality two instances of `xid_t`. More...

bool	operator< (struct xid_t const &rhs) const
	Compares for lower-than-inequality two instances of `xid_t`. More...

Static Public Attributes
static const uint	ser_buf_size = 8 + 2 * XIDDATASIZE + 4 * sizeof(long) + 1

Private Member Functions
void	set (const xid_t *xid)

void	set (my_xid xid)

void	null ()

Private Attributes
long	formatID
	-1 means that the XID is null More...

long	gtrid_length
	value from 1 through 64 More...

long	bqual_length
	value from 1 through 64 More...

char	data [XIDDATASIZE]
	distributed trx identifier. More...

Friends
class	XID_STATE

std::ostream &	operator<< (std::ostream &out, struct xid_t const &in)
	Writes the parameter's `in` string representation to the `out` stream parameter object. More...

Detailed Description

struct xid_t is binary compatible with the XID structure as in the X/Open CAE Specification, Distributed Transaction Processing: The XA Specification, X/Open Company Ltd., 1991.

http://www.opengroup.org/bookstore/catalog/c193.htm

See also: MYSQL_XID in mysql/plugin.h

Constructor & Destructor Documentation

◆ xid_t()

xid_t::xid_t ( )

inline

Member Function Documentation

◆ eq()

bool xid_t::eq ( const xid_t * xid ) const

inline

Check if equal to another xid.

Parameters

[in] xid the id of another X/Open XA transaction

Returns: true iff formats, gtrid_length, bqual_length and the content of gtrid_length+bqual_length bytes is exactly the same

◆ get_bqual_length()

long xid_t::get_bqual_length ( ) const

inline

◆ get_data()

const char * xid_t::get_data ( ) const

inline

◆ get_format_id()

long xid_t::get_format_id ( ) const

inline

◆ get_gtrid_length()

long xid_t::get_gtrid_length ( ) const

inline

◆ get_my_xid()

my_xid xid_t::get_my_xid ( ) const

◆ is_null()

bool xid_t::is_null ( ) const

inline

◆ key() [1/2]

uchar * xid_t::key ( )

inline

◆ key() [2/2]

const uchar * xid_t::key ( ) const

inline

◆ key_length()

uint xid_t::key_length ( ) const

inline

◆ null()

void xid_t::null ( )

inlineprivate

◆ operator!=()

bool xid_t::operator!= ( struct xid_t const & rhs ) const

Compares for inequality two instances of xid_t.

Parameters

rhs	The instance to compare this object with.

Returns: true if both instance are different, false otherwise.

◆ operator<()

bool xid_t::operator< ( struct xid_t const & rhs ) const

Compares for lower-than-inequality two instances of xid_t.

The lesser-than relation between two given XIDs, x1 and x2, is as follows:

x1 < x2 if any of the following is true:

x1[FORMAT_ID] < x2[FORMAT_ID]
x1[strlen(GTRID)] < x2[strlen(GTRID)]
x1[strlen(BQUAL)] < x2[strlen(BQUAL)]
std::strncmp(x1[DATA], x2[DATA]) < 0

Parameters

rhs	The instance to compare this object with.

Returns: true if this instance is lesser than the parameter, false otherwise.

◆ operator=()

xid_t & xid_t::operator= ( binary_log::XA_prepare_event::MY_XID const & rhs )

Instantiates this object with the contents of the parameter of type XA_prepare_event::MY_XID.

The XA_prepare_event::MY_XID is a mirror class of xid_t so the instantiation is a direct instantiation relation of each class member variables.

Parameters

rhs	The `XA_prepare_event::MY_XID` to instantiate from

Returns: This object reference.

◆ operator==()

bool xid_t::operator== ( struct xid_t const & rhs ) const

Compares for equality two instances of xid_t.

Parameters

rhs	The instance to compare this object with.

Returns: true if both instance are equal, false otherwise.

◆ reset()

void xid_t::reset ( void )

inline

◆ serialize()

char * xid_t::serialize ( char * buf ) const

inline

The method fills XID in a buffer in format of GTRID,BQUAL,FORMATID where GTRID, BQUAL are represented as hex strings.

Parameters

buf	a pointer to buffer

Returns: the value of the first argument

◆ set() [1/3]

void xid_t::set ( const xid_t * xid )

inlineprivate

◆ set() [2/3]

void xid_t::set	(	long	f,
		const char *	g,
		long	gl,
		const char *	b,
		long	bl
	)

inline

◆ set() [3/3]

void xid_t::set ( my_xid xid )

private

◆ set_bqual_length()

void xid_t::set_bqual_length ( long v )

inline

◆ set_data()

void xid_t::set_data	(	const void *	v,
		long	l
	)

inline

◆ set_format_id()

void xid_t::set_format_id ( long v )

inline

◆ set_gtrid_length()

void xid_t::set_gtrid_length ( long v )

inline

◆ xid_to_str()

char * XID::xid_to_str ( char * buf ) const

Get printable XID value.

Parameters

buf	pointer to the buffer where printable XID value has to be stored

Returns: pointer to the buffer passed in the first argument

Friends And Related Function Documentation

◆ operator<<

std::ostream & operator<<	(	std::ostream &	out,
		struct xid_t const &	in
	)

friend

Writes the parameter's in string representation to the out stream parameter object.

Parameters

out	The stream to write the XID representation to
in	The XID for which the string representation should be written

Returns: The reference for the stream passed on as parameter.

◆ XID_STATE

friend class XID_STATE

friend

Member Data Documentation

◆ bqual_length

long xid_t::bqual_length

private

value from 1 through 64

◆ data

char xid_t::data[XIDDATASIZE]

private

distributed trx identifier.

not \0-terminated.

◆ formatID

long xid_t::formatID

private

-1 means that the XID is null

◆ gtrid_length

long xid_t::gtrid_length

private

value from 1 through 64

◆ ser_buf_size

const uint xid_t::ser_buf_size = 8 + 2 * XIDDATASIZE + 4 * sizeof(long) + 1

static

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

sql/xa.h
sql/xa.cc

Public Member Functions

Static Public Attributes

Private Member Functions

Private Attributes

Friends

Detailed Description

Constructor & Destructor Documentation

◆ xid_t()

Member Function Documentation

◆ eq()

◆ get_bqual_length()

◆ get_data()

◆ get_format_id()

◆ get_gtrid_length()

◆ get_my_xid()

◆ is_null()

◆ key() [1/2]

◆ key() [2/2]

◆ key_length()

◆ null()

◆ operator!=()

◆ operator<()

◆ operator=()

◆ operator==()

◆ reset()

◆ serialize()

◆ set() [1/3]

◆ set() [2/3]

◆ set() [3/3]

◆ set_bqual_length()

◆ set_data()

◆ set_format_id()

◆ set_gtrid_length()

◆ xid_to_str()

Friends And Related Function Documentation

◆ operator<<

◆ XID_STATE

Member Data Documentation

◆ bqual_length

◆ data

◆ formatID

◆ gtrid_length

◆ ser_buf_size