/** The class defining a handle to an Innodb table */ class ha_innobase: public handler { row_prebuilt_t* prebuilt; /*!< prebuilt struct in InnoDB, used to save CPU time with prebuilt data structures*/ THD* user_thd; /*!< the thread handle of the user currently using the handle; this is set in external_lock function */ THR_LOCK_DATA lock; INNOBASE_SHARE* share; /*!< information for MySQL table locking */ uchar* upd_buf; /*!< buffer used in updates */ ulint upd_buf_size; /*!< the size of upd_buf in bytes */ uchar srch_key_val1[MAX_KEY_LENGTH + MAX_REF_PARTS*2]; uchar srch_key_val2[MAX_KEY_LENGTH + MAX_REF_PARTS*2]; /*!< buffers used in converting search key values from MySQL format to InnoDB format. For each column 2 bytes are used to store length, hence MAX_REF_PARTS*2. */ Table_flags int_table_flags; uint primary_key; ulong start_of_scan; /*!< this is set to 1 when we are starting a table scan but have not yet fetched any row, else 0 */ uint last_match_mode;/* match mode of the latest search: ROW_SEL_EXACT, ROW_SEL_EXACT_PREFIX, or undefined */ uint num_write_row; /*!< number of write_row() calls */ uint store_key_val_for_row(uint keynr, char* buff, uint buff_len, const uchar* record); inline void update_thd(THD* thd); void update_thd(); int change_active_index(uint keynr); int general_fetch(uchar* buf, uint direction, uint match_mode); ulint innobase_lock_autoinc(); ulonglong innobase_peek_autoinc(); ulint innobase_set_max_autoinc(ulonglong auto_inc); ulint innobase_reset_autoinc(ulonglong auto_inc); ulint innobase_get_autoinc(ulonglong* value); ulint innobase_update_autoinc(ulonglong auto_inc); void innobase_initialize_autoinc(); dict_index_t* innobase_get_index(uint keynr); int info_low(uint flag, bool called_from_analyze); /* Init values for the class: */ public: ha_innobase(handlerton *hton, TABLE_SHARE *table_arg); ~ha_innobase(); /* Get the row type from the storage engine. If this method returns ROW_TYPE_NOT_USED, the information in HA_CREATE_INFO should be used. */ enum row_type get_row_type() const; const char* table_type() const; const char* index_type(uint key_number); const char** bas_ext() const; Table_flags table_flags() const; ulong index_flags(uint idx, uint part, bool all_parts) const; uint max_supported_keys() const; uint max_supported_key_length() const; uint max_supported_key_part_length() const; const key_map* keys_to_use_for_scanning(); int open(const char *name, int mode, uint test_if_locked); handler* clone(const char *name, MEM_ROOT *mem_root); int close(void); double scan_time(); double read_time(uint index, uint ranges, ha_rows rows); int write_row(uchar * buf); int update_row(const uchar * old_data, uchar * new_data); int delete_row(const uchar * buf); bool was_semi_consistent_read(); void try_semi_consistent_read(bool yes); void unlock_row(); int index_init(uint index, bool sorted); int index_end(); int index_read(uchar * buf, const uchar * key, uint key_len, enum ha_rkey_function find_flag); int index_read_idx(uchar * buf, uint index, const uchar * key, uint key_len, enum ha_rkey_function find_flag); int index_read_last(uchar * buf, const uchar * key, uint key_len); int index_next(uchar * buf); int index_next_same(uchar * buf, const uchar *key, uint keylen); int index_prev(uchar * buf); int index_first(uchar * buf); int index_last(uchar * buf); int rnd_init(bool scan); int rnd_end(); int rnd_next(uchar *buf); int rnd_pos(uchar * buf, uchar *pos); void position(const uchar *record); int info(uint); int analyze(THD* thd,HA_CHECK_OPT* check_opt); int optimize(THD* thd,HA_CHECK_OPT* check_opt); int discard_or_import_tablespace(my_bool discard); int extra(enum ha_extra_function operation); int reset(); int external_lock(THD *thd, int lock_type); int transactional_table_lock(THD *thd, int lock_type); int start_stmt(THD *thd, thr_lock_type lock_type); void position(uchar *record); ha_rows records_in_range(uint inx, key_range *min_key, key_range *max_key); ha_rows estimate_rows_upper_bound(); void update_create_info(HA_CREATE_INFO* create_info); int create(const char *name, register TABLE *form, HA_CREATE_INFO *create_info); int truncate(); int delete_table(const char *name); int rename_table(const char* from, const char* to); int check(THD* thd, HA_CHECK_OPT* check_opt); char* update_table_comment(const char* comment); char* get_foreign_key_create_info(); int get_foreign_key_list(THD *thd, List<FOREIGN_KEY_INFO> *f_key_list); int get_parent_foreign_key_list(THD *thd, List<FOREIGN_KEY_INFO> *f_key_list); bool can_switch_engines(); uint referenced_by_foreign_key(); void free_foreign_key_create_info(char* str); THR_LOCK_DATA **store_lock(THD *thd, THR_LOCK_DATA **to, enum thr_lock_type lock_type); void init_table_handle_for_HANDLER(); virtual void get_auto_increment(ulonglong offset, ulonglong increment, ulonglong nb_desired_values, ulonglong *first_value, ulonglong *nb_reserved_values); int reset_auto_increment(ulonglong value); virtual bool get_error_message(int error, String *buf); uint8 table_cache_type(); /* ask handler about permission to cache table during query registration */ my_bool register_query_cache_table(THD *thd, char *table_key, uint key_length, qc_engine_callback *call_back, ulonglong *engine_data); static char *get_mysql_bin_log_name(); static ulonglong get_mysql_bin_log_pos(); bool primary_key_is_clustered(); int cmp_ref(const uchar *ref1, const uchar *ref2); /** Fast index creation (smart ALTER TABLE) @see handler0alter.cc @{ */ int add_index(TABLE *table_arg, KEY *key_info, uint num_of_keys, handler_add_index **add); int final_add_index(handler_add_index *add, bool commit); int prepare_drop_index(TABLE *table_arg, uint *key_num, uint num_of_keys); int final_drop_index(TABLE *table_arg); /** @} */ bool check_if_incompatible_data(HA_CREATE_INFO *info, uint table_changes); };