sql_handler.h File Reference

#include "my_base.h"
#include "my_sqlcommand.h"
#include "sql/sql_cmd.h"

Go to the source code of this file.

Classes
class	Sql_cmd_handler_open
	Sql_cmd_handler_open represents HANDLER OPEN statement. More...
class	Sql_cmd_handler_read
	Sql_cmd_handler_read represents HANDLER READ statement. More...
class	Sql_cmd_handler_close
	Sql_cmd_handler_close represents HANDLER CLOSE statement. More...

Enumerations
enum class	enum_ha_read_modes {   RFIRST , RNEXT , RPREV , RLAST ,   RKEY , RNEXT_SAME }

Functions
void	mysql_ha_flush (THD *thd)
	Flush (close and mark for re-open) all tables that should be should be reopen. More...
void	mysql_ha_flush_tables (THD *thd, Table_ref *all_tables)
	Close cursors of matching tables from the HANDLER's hash table. More...
void	mysql_ha_flush_table (THD *thd, const char *db_name, const char *table_name)
	Close cursors on the table from the HANDLER's hash. More...
void	mysql_ha_rm_tables (THD *thd, Table_ref *tables)
	Remove matching tables from the HANDLER's hash table. More...
void	mysql_ha_rm_temporary_tables (THD *thd)
	Remove temporary tables from the HANDLER's hash table. More...
void	mysql_ha_cleanup (THD *thd)
	Close all HANDLER's tables. More...
void	mysql_ha_set_explicit_lock_duration (THD *thd)
	Set explicit duration for metadata locks corresponding to open HANDLERs to protect them from being released at the end of transaction. More...

Enumeration Type Documentation

enum_ha_read_modes

enum class enum_ha_read_modes

strong

Enumerator
RFIRST
RNEXT
RPREV
RLAST
RKEY
RNEXT_SAME

Function Documentation

mysql_ha_cleanup()

void mysql_ha_cleanup

(

THD *

thd

)

Close all HANDLER's tables.

Parameters

thd	Thread identifier.

Note

Broadcasts refresh if it closed a table with old version.

mysql_ha_flush()

void mysql_ha_flush

(

THD *

thd

)

Flush (close and mark for re-open) all tables that should be should be reopen.

Parameters

thd	Thread identifier.

Note

Broadcasts refresh if it closed a table with old version.

mysql_ha_flush_table()

void mysql_ha_flush_table	(	THD *	thd,
		const char *	db_name,
		const char *	table_name
	)

Close cursors on the table from the HANDLER's hash.

Parameters

thd	Thread context.
db_name	Database name for the table.
table_name	Table name.

mysql_ha_flush_tables()

void mysql_ha_flush_tables	(	THD *	thd,
		Table_ref *	all_tables
	)

Close cursors of matching tables from the HANDLER's hash table.

Parameters

thd	Thread identifier.
all_tables	The list of tables to flush.

mysql_ha_rm_tables()

void mysql_ha_rm_tables	(	THD *	thd,
		Table_ref *	tables
	)

Remove matching tables from the HANDLER's hash table.

Parameters

thd	Thread identifier.
tables	The list of tables to remove.

Note

Broadcasts refresh if it closed a table with old version.

mysql_ha_rm_temporary_tables()

void mysql_ha_rm_temporary_tables

(

THD *

thd

)

Remove temporary tables from the HANDLER's hash table.

The reason for having a separate function, rather than calling mysql_ha_rm_tables() is that it is not always feasible (e.g. in close_temporary_tables) to obtain a Table_ref containing the temporary tables.

See also

close_temporary_tables

Parameters

thd	Thread identifier.

mysql_ha_set_explicit_lock_duration()

void mysql_ha_set_explicit_lock_duration

(

THD *

thd

)

Set explicit duration for metadata locks corresponding to open HANDLERs to protect them from being released at the end of transaction.

Parameters

thd	Thread identifier.