diff options
Diffstat (limited to 'storage/myisam/ha_myisam.h')
-rw-r--r-- | storage/myisam/ha_myisam.h | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/storage/myisam/ha_myisam.h b/storage/myisam/ha_myisam.h new file mode 100644 index 00000000000..024675075c2 --- /dev/null +++ b/storage/myisam/ha_myisam.h @@ -0,0 +1,147 @@ +/* Copyright (C) 2000-2006 MySQL AB + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; version 2 of the License. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ + + +#ifdef USE_PRAGMA_INTERFACE +#pragma interface /* gcc class implementation */ +#endif + +/* class for the the myisam handler */ + +#include <myisam.h> +#include <ft_global.h> + +#define HA_RECOVER_NONE 0 /* No automatic recover */ +#define HA_RECOVER_DEFAULT 1 /* Automatic recover active */ +#define HA_RECOVER_BACKUP 2 /* Make a backupfile on recover */ +#define HA_RECOVER_FORCE 4 /* Recover even if we loose rows */ +#define HA_RECOVER_QUICK 8 /* Don't check rows in data file */ + +extern ulong myisam_sort_buffer_size; +extern TYPELIB myisam_recover_typelib; +extern ulong myisam_recover_options; + +class ha_myisam: public handler +{ + MI_INFO *file; + ulonglong int_table_flags; + char *data_file_name, *index_file_name; + bool can_enable_indexes; + int repair(THD *thd, MI_CHECK ¶m, bool optimize); + + public: + ha_myisam(handlerton *hton, TABLE_SHARE *table_arg); + ~ha_myisam() {} + handler *clone(MEM_ROOT *mem_root); + const char *table_type() const { return "MyISAM"; } + const char *index_type(uint key_number); + const char **bas_ext() const; + ulonglong table_flags() const { return int_table_flags; } + ulong index_flags(uint inx, uint part, bool all_parts) const + { + return ((table_share->key_info[inx].algorithm == HA_KEY_ALG_FULLTEXT) ? + 0 : HA_READ_NEXT | HA_READ_PREV | HA_READ_RANGE | + HA_READ_ORDER | HA_KEYREAD_ONLY); + } + uint max_supported_keys() const { return MI_MAX_KEY; } + uint max_supported_key_length() const { return MI_MAX_KEY_LENGTH; } + uint max_supported_key_part_length() const { return MI_MAX_KEY_LENGTH; } + uint checksum() const; + + virtual bool check_if_locking_is_allowed(uint sql_command, + ulong type, TABLE *table, + uint count, uint current, + uint *system_count, + bool called_by_logger_thread); + int open(const char *name, int mode, uint test_if_locked); + int close(void); + int write_row(uchar * buf); + int update_row(const uchar * old_data, uchar * new_data); + int delete_row(const uchar * buf); + int index_read(uchar *buf, const uchar *key, key_part_map keypart_map, + enum ha_rkey_function find_flag); + int index_read_idx(uchar *buf, uint index, const uchar *key, + key_part_map keypart_map, enum ha_rkey_function find_flag); + int index_read_last(uchar *buf, const uchar *key, key_part_map keypart_map); + int index_next(uchar * buf); + int index_prev(uchar * buf); + int index_first(uchar * buf); + int index_last(uchar * buf); + int index_next_same(uchar *buf, const uchar *key, uint keylen); + int ft_init() + { + if (!ft_handler) + return 1; + ft_handler->please->reinit_search(ft_handler); + return 0; + } + FT_INFO *ft_init_ext(uint flags, uint inx,String *key) + { + return ft_init_search(flags,file,inx, + (uchar *)key->ptr(), key->length(), key->charset(), + table->record[0]); + } + int ft_read(uchar *buf); + int rnd_init(bool scan); + int rnd_next(uchar *buf); + int rnd_pos(uchar * buf, uchar *pos); + int restart_rnd_next(uchar *buf, uchar *pos); + void position(const uchar *record); + int info(uint); + int extra(enum ha_extra_function operation); + int extra_opt(enum ha_extra_function operation, ulong cache_size); + int reset(void); + int external_lock(THD *thd, int lock_type); + int delete_all_rows(void); + int disable_indexes(uint mode); + int enable_indexes(uint mode); + int indexes_are_disabled(void); + void start_bulk_insert(ha_rows rows); + int end_bulk_insert(); + ha_rows records_in_range(uint inx, key_range *min_key, key_range *max_key); + void update_create_info(HA_CREATE_INFO *create_info); + int create(const char *name, TABLE *form, HA_CREATE_INFO *create_info); + THR_LOCK_DATA **store_lock(THD *thd, THR_LOCK_DATA **to, + enum thr_lock_type lock_type); + virtual void get_auto_increment(ulonglong offset, ulonglong increment, + ulonglong nb_desired_values, + ulonglong *first_value, + ulonglong *nb_reserved_values); + int rename_table(const char * from, const char * to); + int delete_table(const char *name); + int check(THD* thd, HA_CHECK_OPT* check_opt); + int analyze(THD* thd,HA_CHECK_OPT* check_opt); + int repair(THD* thd, HA_CHECK_OPT* check_opt); + bool check_and_repair(THD *thd); + bool is_crashed() const; + bool auto_repair() const { return myisam_recover_options != 0; } + int optimize(THD* thd, HA_CHECK_OPT* check_opt); + int restore(THD* thd, HA_CHECK_OPT* check_opt); + int backup(THD* thd, HA_CHECK_OPT* check_opt); + int assign_to_keycache(THD* thd, HA_CHECK_OPT* check_opt); + int preload_keys(THD* thd, HA_CHECK_OPT* check_opt); + bool check_if_incompatible_data(HA_CREATE_INFO *info, uint table_changes); +#ifdef HAVE_REPLICATION + int dump(THD* thd, int fd); + int net_read_dump(NET* net); +#endif +#ifdef HAVE_QUERY_CACHE + my_bool register_query_cache_table(THD *thd, char *table_key, + uint key_length, + qc_engine_callback + *engine_callback, + ulonglong *engine_data); +#endif +}; |