handlerton Struct Reference

Collaboration diagram for handlerton:

Public Attributes
SHOW_COMP_OPTION	state
enum legacy_db_type	db_type
uint	slot
uint	savepoint_offset
int(*	close_connection )(handlerton *hton, THD *thd)
int(*	savepoint_set )(handlerton *hton, THD *thd, void *sv)
int(*	savepoint_rollback )(handlerton *hton, THD *thd, void *sv)
int(*	savepoint_release )(handlerton *hton, THD *thd, void *sv)
int(*	commit )(handlerton *hton, THD *thd, bool all)
int(*	rollback )(handlerton *hton, THD *thd, bool all)
int(*	prepare )(handlerton *hton, THD *thd, bool all)
int(*	recover )(handlerton *hton, XID *xid_list, uint len)
int(*	commit_by_xid )(handlerton *hton, XID *xid)
int(*	rollback_by_xid )(handlerton *hton, XID *xid)
void *(*	create_cursor_read_view )(handlerton *hton, THD *thd)
void(*	set_cursor_read_view )(handlerton *hton, THD *thd, void *read_view)
void(*	close_cursor_read_view )(handlerton *hton, THD *thd, void *read_view)
handler *(*	create )(handlerton *hton, TABLE_SHARE *table, MEM_ROOT *mem_root)
void(*	drop_database )(handlerton *hton, char *path)
int(*	panic )(handlerton *hton, enum ha_panic_function flag)
int(*	start_consistent_snapshot )(handlerton *hton, THD *thd)
bool(*	flush_logs )(handlerton *hton)
bool(*	show_status )(handlerton *hton, THD *thd, stat_print_fn *print, enum ha_stat_type stat)
uint(*	partition_flags )()
uint(*	alter_table_flags )(uint flags)
int(*	alter_tablespace )(handlerton *hton, THD *thd, st_alter_tablespace *ts_info)
int(*	fill_is_table )(handlerton *hton, THD *thd, TABLE_LIST *tables, class Item *cond, enum enum_schema_tables)
uint32	flags
int(*	binlog_func )(handlerton *hton, THD *thd, enum_binlog_func fn, void *arg)
void(*	binlog_log_query )(handlerton *hton, THD *thd, enum_binlog_command binlog_command, const char *query, uint query_length, const char *db, const char *table_name)
int(*	release_temporary_latches )(handlerton *hton, THD *thd)
enum log_status(*	get_log_status )(handlerton *hton, char *log)
enum handler_create_iterator_result(*	create_iterator )(handlerton *hton, enum handler_iterator_type type, struct handler_iterator *fill_this_in)
int(*	discover )(handlerton *hton, THD *thd, const char *db, const char *name, uchar **frmblob, size_t *frmlen)
int(*	find_files )(handlerton *hton, THD *thd, const char *db, const char *path, const char *wild, bool dir, List< LEX_STRING > *files)
int(*	table_exists_in_engine )(handlerton *hton, THD *thd, const char *db, const char *name)
int(*	make_pushed_join )(handlerton *hton, THD *thd, const AQP::Join_plan *plan)
const char *(*	system_database )()
bool(*	is_supported_system_table )(const char *db, const char *table_name, bool is_sql_layer_system_table)
uint32	license
void *	data

Detailed Description

Definition at line 802 of file handler.h.

Member Data Documentation

bool(* handlerton::is_supported_system_table)(const char *db, const char *table_name, bool is_sql_layer_system_table)

Check if the given db.tablename is a system table for this SE.

Parameters

db	Database name to check.
table_name	table name to check.
is_sql_layer_system_table	if the supplied db.table_name is a SQL layer system table.

See Also

example_is_supported_system_table in ha_example.cc

is_sql_layer_system_table is supplied to make more efficient checks possible for SEs that support all SQL layer tables.

This interface is optional, so every SE need not implement it.

Definition at line 951 of file handler.h.

const char*(* handlerton::system_database)()

List of all system tables specific to the SE. Array element would look like below, { "<database_name>", "<system table name>" }, The last element MUST be, { (const char*)NULL, (const char*)NULL }

See Also

ha_example_system_tables in ha_example.cc

This interface is optional, so every SE need not implement it.

Definition at line 934 of file handler.h.

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The documentation for this struct was generated from the following file:

• sql/handler.h