MySQL 8.0.30
Source Code Documentation
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:
[legend]

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_sharem_share_ptr
 Table share. More...
 
void * m_pos_ptr
 Opaque pointer to the m_pos position of this cursor. More...
 
time_normalizerm_normalizer
 Current normalizer. More...
 
PFS_engine_index_abstractm_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 (void)=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 (void)=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_sharefind_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
statementThe statement the cursor is reading
[out]digestSaved 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]digestStatement 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
tableTable handle
bufrow buffer
fieldsTable fields
read_alltrue 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

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