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)
bool(*	savepoint_rollback_can_release_mdl )(handlerton hton, THD thd)
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

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.

bool(* handlerton::savepoint_rollback_can_release_mdl)(handlerton *hton, THD *thd)

Check if storage engine allows to release metadata locks which were acquired after the savepoint if rollback to savepoint is done.

Returns:: true - If it is safe to release MDL locks. false - If it is not.

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.

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

handler.h

Public Attributes

Member Data Documentation