table_events_statements_common Class Reference

Adapter, for table sharing the structure of PERFORMANCE_SCHEMA.EVENTS_STATEMENTS_CURRENT. More...

#include <table_events_statements.h>

Inheritance diagram for table_events_statements_common:

Protected Member Functions
int	read_row_values (TABLE *table, unsigned char *buf, Field **fields, bool read_all) override
	Read the current row values. More...
	table_events_statements_common (const PFS_engine_table_share *share, void *pos)
	~table_events_statements_common () override=default
int	make_row_part_1 (PFS_events_statements *statement, sql_digest_storage *digest)
	Build a row, part 1. More...
int	make_row_part_2 (const sql_digest_storage *digest)
	Build a row, part 2. More...
Protected Member Functions inherited from PFS_engine_table
virtual int	update_row_values (TABLE *table, const unsigned char *old_buf, unsigned char *new_buf, Field **fields)
	Update the current row values. More...
virtual int	delete_row_values (TABLE *table, const unsigned char *buf, Field **fields)
	Delete a row. More...
	PFS_engine_table (const PFS_engine_table_share *share, void *pos)
	Constructor. More...

Protected Attributes
row_events_statements	m_row
	Current row. More...
unsigned char	m_token_array [MAX_DIGEST_STORAGE_SIZE]
Protected Attributes inherited from PFS_engine_table
const PFS_engine_table_share *	m_share_ptr
	Table share. More...
void *	m_pos_ptr
	Opaque pointer to the m_pos position of this cursor. More...
time_normalizer *	m_normalizer
	Current normalizer. More...
PFS_engine_index_abstract *	m_index
	Current index. More...

Additional Inherited Members
Public Member Functions inherited from PFS_engine_table
int	read_row (TABLE *table, unsigned char *buf, Field **fields)
	Read a table row. More...
int	update_row (TABLE *table, const unsigned char *old_buf, unsigned char *new_buf, Field **fields)
	Update a table row. More...
int	delete_row (TABLE *table, const unsigned char *buf, Field **fields)
	Delete a row from this table. More...
virtual int	rnd_init (bool scan)
	Initialize table scan. More...
virtual int	rnd_next ()=0
	Fetch the next row in this cursor. More...
virtual int	index_init (uint idx, bool sorted)
virtual int	index_read (KEY *key_infos, uint index, const uchar *key, uint key_len, enum ha_rkey_function find_flag)
	Positions an index cursor to the index specified in the handle. More...
virtual int	index_read_last (KEY *key_infos, const uchar *key, uint key_len)
virtual int	index_next ()
	Find key in index, read record. More...
virtual int	index_next_same (const uchar *key, uint key_len)
	Reads the next row matching the given key value. More...
virtual int	index_prev ()
virtual int	index_first ()
virtual int	index_last ()
virtual int	rnd_pos (const void *pos)=0
	Fetch a row by position. More...
void	get_position (void *ref)
	Get the position of the current row. More...
void	set_position (const void *ref)
	Set the table cursor at a given position. More...
virtual void	reset_position ()=0
	Reset the cursor position to the beginning of the table. More...
virtual	~PFS_engine_table ()=default
	Destructor. More...
Static Public Member Functions inherited from PFS_engine_table
static PFS_engine_table_share *	find_engine_table_share (const char *name)
	Find a table share by name. More...

Detailed Description

Adapter, for table sharing the structure of PERFORMANCE_SCHEMA.EVENTS_STATEMENTS_CURRENT.

Constructor & Destructor Documentation

table_events_statements_common()

table_events_statements_common::table_events_statements_common ( const PFS_engine_table_share *  share, void *  pos  )

protected

~table_events_statements_common()

table_events_statements_common::~table_events_statements_common ( )

overrideprotecteddefault

Member Function Documentation

make_row_part_1()

int table_events_statements_common::make_row_part_1 ( PFS_events_statements *  statement, sql_digest_storage *  digest  )

protected

Build a row, part 1.

This method is used while holding optimist locks.

Parameters

	statement	The statement the cursor is reading
[out]	digest	Saved copy of the statement digest

Returns

0 on success or HA_ERR_RECORD_DELETED

make_row_part_2()

int table_events_statements_common::make_row_part_2 ( const sql_digest_storage *  digest )

protected

Build a row, part 2.

This method is used after all optimist locks have been released.

Parameters

[in]

digest

Statement digest to print in the row.

Returns

0 on success or HA_ERR_RECORD_DELETED

read_row_values()

int table_events_statements_common::read_row_values ( TABLE *  table, unsigned char *  buf, Field **  fields, bool  read_all  )

overrideprotectedvirtual

Read the current row values.

Parameters

table	Table handle
buf	row buffer
fields	Table fields
read_all	true if all columns are read.

Implements PFS_engine_table.

Member Data Documentation

m_row

row_events_statements table_events_statements_common::m_row

protected

Current row.

m_token_array

unsigned char table_events_statements_common::m_token_array[MAX_DIGEST_STORAGE_SIZE]

protected

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

• storage/perfschema/table_events_statements.h
• storage/perfschema/table_events_statements.cc