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MySQL 9.0.0
Source Code Documentation
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Table PERFORMANCE_SCHEMA.PERSISTED_VARIABLES. More...
#include <table_persisted_variables.h>
Public Member Functions | |
void | reset_position () override |
Reset the cursor position to the beginning of the table. More... | |
int | rnd_init (bool scan) override |
Initialize table scan. More... | |
int | rnd_next () override |
Fetch the next row in this cursor. More... | |
int | rnd_pos (const void *pos) override |
Fetch a row by position. More... | |
int | index_init (uint idx, bool sorted) override |
int | index_next () override |
Find key in index, read record. More... | |
~table_persisted_variables () override=default | |
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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 | 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_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 () |
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 | ~PFS_engine_table ()=default |
Destructor. More... | |
Static Public Member Functions | |
static PFS_engine_table * | create (PFS_engine_table_share *) |
static ha_rows | get_row_count () |
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static PFS_engine_table_share * | find_engine_table_share (const char *name) |
Find a table share by name. More... | |
Static Public Attributes | |
static PFS_engine_table_share | m_share |
Table share. More... | |
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_persisted_variables () | |
int | make_row (const System_variable *system_var) |
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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... | |
Private Types | |
typedef PFS_simple_index | pos_t |
Private Attributes | |
PFS_system_persisted_variables_cache | m_sysvar_cache |
Current THD variables. More... | |
row_persisted_variables | m_row |
Current row. More... | |
pos_t | m_pos |
Current position. More... | |
pos_t | m_next_pos |
Next position. More... | |
PFS_index_persisted_variables * | m_opened_index |
Static Private Attributes | |
static THR_LOCK | m_table_lock |
Table share lock. More... | |
static Plugin_table | m_table_def |
Table definition. More... | |
Additional Inherited Members | |
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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... | |
Table PERFORMANCE_SCHEMA.PERSISTED_VARIABLES.
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private |
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protected |
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overridedefault |
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static |
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static |
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overridevirtual |
Reimplemented from PFS_engine_table.
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overridevirtual |
Find key in index, read record.
Reimplemented from PFS_engine_table.
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protected |
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overrideprotectedvirtual |
Read the current row values.
table | Table handle |
buf | row buffer |
fields | Table fields |
read_all | true if all columns are read. |
Implements PFS_engine_table.
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overridevirtual |
Reset the cursor position to the beginning of the table.
Implements PFS_engine_table.
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overridevirtual |
Initialize table scan.
Reimplemented from PFS_engine_table.
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overridevirtual |
Fetch the next row in this cursor.
Implements PFS_engine_table.
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overridevirtual |
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private |
Next position.
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private |
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private |
Current position.
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private |
Current row.
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static |
Table share.
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private |
Current THD variables.
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staticprivate |
Table definition.
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staticprivate |
Table share lock.