Event for the first block of file to be loaded, its only difference from Append_block event is that this event creates or truncates existing file before writing data. More...

#include <load_data_events.h>

Inheritance diagram for mysql::binlog::event::Begin_load_query_event:

[legend]

Public Member Functions
	Begin_load_query_event (const char buf, const Format_description_event fde)
	The buffer layout for fixed data part is as follows: More...

	~Begin_load_query_event () override=default

Public Member Functions inherited from mysql::binlog::event::Append_block_event
	Append_block_event (const char buf, const Format_description_event fde)
	Appends the buffered data, received as a parameter, to the file being loaded via LOAD_DATA_FILE. More...

	~Append_block_event () override=default

Public Member Functions inherited from mysql::binlog::event::Binary_log_event
virtual	~Binary_log_event ()=0

	Binary_log_event (const Binary_log_event &)=default

	Binary_log_event (Binary_log_event &&)=default

Binary_log_event &	operator= (const Binary_log_event &)=default

Binary_log_event &	operator= (Binary_log_event &&)=default

enum Log_event_type	get_event_type () const
	Helper method. More...

const Log_event_header *	header () const
	Return a const pointer to the header of the log event. More...

Log_event_header *	header ()
	Return a non-const pointer to the header of the log event. More...

const Log_event_footer *	footer () const
	Return a const pointer to the footer of the log event. More...

Log_event_footer *	footer ()
	Return a non-const pointer to the footer of the log event. More...

Event_reader &	reader ()
	Returns a reference to the event Event_reader object. More...

Protected Member Functions
	Begin_load_query_event ()

Protected Member Functions inherited from mysql::binlog::event::Append_block_event
	Append_block_event (const char db_arg, unsigned char block_arg, unsigned int block_len_arg, uint32_t file_id_arg)
	This constructor is used by the MySQL server. More...

	Append_block_event (Log_event_type type_arg=APPEND_BLOCK_EVENT)

Protected Member Functions inherited from mysql::binlog::event::Binary_log_event
	Binary_log_event (Log_event_type type_code)
	This constructor is used to initialize the type_code of header object m_header. More...

	Binary_log_event (const char *buf, const Format_description_event fde)
	This constructor will create a new object of Log_event_header and initialize the variable m_header, which in turn will be used to initialize Log_event's member common_header. More...

Additional Inherited Members
Public Types inherited from mysql::binlog::event::Append_block_event
enum	Append_block_offset { AB_FILE_ID_OFFSET = 0 , AB_DATA_OFFSET = APPEND_BLOCK_HEADER_LEN }

Public Types inherited from mysql::binlog::event::Binary_log_event
enum	enum_post_header_length { QUERY_HEADER_MINIMAL_LEN = (4 + 4 + 1 + 2) , QUERY_HEADER_LEN = (QUERY_HEADER_MINIMAL_LEN + 2) , STOP_HEADER_LEN = 0 , START_V3_HEADER_LEN = (2 + ST_SERVER_VER_LEN + 4) , ROTATE_HEADER_LEN = 8 , INTVAR_HEADER_LEN = 0 , APPEND_BLOCK_HEADER_LEN = 4 , DELETE_FILE_HEADER_LEN = 4 , RAND_HEADER_LEN = 0 , USER_VAR_HEADER_LEN = 0 , FORMAT_DESCRIPTION_HEADER_LEN = (START_V3_HEADER_LEN + 1 + LOG_EVENT_TYPES) , XID_HEADER_LEN = 0 , BEGIN_LOAD_QUERY_HEADER_LEN = APPEND_BLOCK_HEADER_LEN , ROWS_HEADER_LEN_V1 = 8 , TABLE_MAP_HEADER_LEN = 8 , EXECUTE_LOAD_QUERY_EXTRA_HEADER_LEN = (4 + 4 + 4 + 1) , EXECUTE_LOAD_QUERY_HEADER_LEN , INCIDENT_HEADER_LEN = 2 , HEARTBEAT_HEADER_LEN = 0 , IGNORABLE_HEADER_LEN = 0 , ROWS_HEADER_LEN_V2 = 10 , TRANSACTION_CONTEXT_HEADER_LEN = 18 , VIEW_CHANGE_HEADER_LEN = 52 , XA_PREPARE_HEADER_LEN = 0 , TRANSACTION_PAYLOAD_HEADER_LEN = 0 }
	The lengths for the fixed data part of each event. More...

Public Attributes inherited from mysql::binlog::event::Append_block_event
unsigned char *	block

unsigned int	block_len

uint32_t	file_id

const char *	db
	'db' is filled when the event is created in mysql_load() (the event needs to have a 'db' member to be well filtered by binlog-*-db rules). More...

Static Public Attributes inherited from mysql::binlog::event::Binary_log_event
static const int	LOG_EVENT_TYPES = (ENUM_END_EVENT - 1)

Detailed Description

Event for the first block of file to be loaded, its only difference from Append_block event is that this event creates or truncates existing file before writing data.

Binary Format

The Post-Header and Body for this event type are empty; it only has the Common-Header.

Constructor & Destructor Documentation

◆ Begin_load_query_event() [1/2]

mysql::binlog::event::Begin_load_query_event::Begin_load_query_event ( )

inlineprotected

◆ Begin_load_query_event() [2/2]

mysql::binlog::event::Begin_load_query_event::Begin_load_query_event	(	const char *	buf,
		const Format_description_event *	fde
	)

The buffer layout for fixed data part is as follows:

+---------+
| file_id |
+---------+

The buffer layout for variable data part is as follows:

+-------------------+
| block | block_len |
+-------------------+

Parameters

buf	Contains the serialized event.
fde	An FDE event (see Rotate_event constructor for more info).

◆ ~Begin_load_query_event()

mysql::binlog::event::Begin_load_query_event::~Begin_load_query_event ( )

overridedefault

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

libs/mysql/binlog/event/load_data_events.h
libs/mysql/binlog/event/load_data_events.cpp

Public Member Functions