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Diffstat (limited to 'storage/myisam/ha_myisam.h')
| -rw-r--r-- | storage/myisam/ha_myisam.h | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/storage/myisam/ha_myisam.h b/storage/myisam/ha_myisam.h new file mode 100644 index 00000000..3843004c --- /dev/null +++ b/storage/myisam/ha_myisam.h @@ -0,0 +1,180 @@ +/* + Copyright (c) 2000, 2012, Oracle and/or its affiliates. + + 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */ + + +#ifdef USE_PRAGMA_INTERFACE +#pragma interface /* gcc class implementation */ +#endif + +/* class for the the myisam handler */ + +#include <myisam.h> +#include <ft_global.h> +#include "handler.h" /* handler */ +#include "table.h" /* TABLE_SHARE */ + +#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 */ +#define HA_RECOVER_FULL_BACKUP 16 /* Make a copy of index file too */ +#define HA_RECOVER_OFF 32 /* No automatic recover */ + +extern TYPELIB myisam_recover_typelib; +extern const char *myisam_recover_names[]; +extern ulonglong myisam_recover_options; + +C_MODE_START +check_result_t index_cond_func_myisam(void *arg); +C_MODE_END + +class ha_myisam final : public handler +{ + MI_INFO *file; + ulonglong int_table_flags; + char *data_file_name, *index_file_name; + bool can_enable_indexes; + int repair(THD *thd, HA_CHECK ¶m, bool optimize); + void setup_vcols_for_repair(HA_CHECK *param); + void restore_vcos_after_repair(); + + public: + ha_myisam(handlerton *hton, TABLE_SHARE *table_arg); + ~ha_myisam() {} + handler *clone(const char *name, MEM_ROOT *mem_root); + const char *index_type(uint key_number); + ulonglong table_flags() const { return int_table_flags; } + int index_init(uint idx, bool sorted); + int index_end(); + int rnd_end(); + + ulong index_flags(uint inx, uint part, bool all_parts) const; + uint max_supported_keys() const { return MI_MAX_KEY; } + uint max_supported_key_parts() const { return HA_MAX_KEY_SEG; } + uint max_supported_key_length() const { return HA_MAX_KEY_LENGTH; } + uint max_supported_key_part_length() const { return HA_MAX_KEY_LENGTH; } + void change_table_ptr(TABLE *table_arg, TABLE_SHARE *share); + int open(const char *name, int mode, uint test_if_locked); + int close(void); + int write_row(const uchar * buf); + int update_row(const uchar * old_data, const uchar * new_data); + int delete_row(const uchar * buf); + int index_read_map(uchar *buf, const uchar *key, key_part_map keypart_map, + enum ha_rkey_function find_flag); + int index_read_idx_map(uchar *buf, uint index, const uchar *key, + key_part_map keypart_map, + enum ha_rkey_function find_flag); + 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 remember_rnd_pos(); + int restart_rnd_next(uchar *buf); + 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 reset_auto_increment(ulonglong value); + int disable_indexes(uint mode); + int enable_indexes(uint mode); + int indexes_are_disabled(void); + void start_bulk_insert(ha_rows rows, uint flags); + int end_bulk_insert(); + ha_rows records_in_range(uint inx, const key_range *min_key, + const key_range *max_key, page_range *pages); + 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_for_upgrade(HA_CHECK_OPT *check_opt); + 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(int error) const + { + return (myisam_recover_options != HA_RECOVER_OFF && + error == HA_ERR_CRASHED_ON_USAGE); + } + int optimize(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); + enum_alter_inplace_result check_if_supported_inplace_alter(TABLE *new_table, + Alter_inplace_info *alter_info); + bool check_if_incompatible_data(HA_CREATE_INFO *info, uint table_changes); +#ifdef HAVE_QUERY_CACHE + my_bool register_query_cache_table(THD *thd, const char *table_key, + uint key_length, + qc_engine_callback + *engine_callback, + ulonglong *engine_data); +#endif + MI_INFO *file_ptr(void) + { + return file; + } +public: + /** + * Multi Range Read interface + */ + int multi_range_read_init(RANGE_SEQ_IF *seq, void *seq_init_param, + uint n_ranges, uint mode, HANDLER_BUFFER *buf); + int multi_range_read_next(range_id_t *range_info); + ha_rows multi_range_read_info_const(uint keyno, RANGE_SEQ_IF *seq, + void *seq_init_param, + uint n_ranges, uint *bufsz, + uint *flags, Cost_estimate *cost); + ha_rows multi_range_read_info(uint keyno, uint n_ranges, uint keys, + uint key_parts, uint *bufsz, + uint *flags, Cost_estimate *cost); + int multi_range_read_explain_info(uint mrr_mode, char *str, size_t size); + + /* Index condition pushdown implementation */ + Item *idx_cond_push(uint keyno, Item* idx_cond); + bool rowid_filter_push(Rowid_filter* rowid_filter); + +private: + DsMrr_impl ds_mrr; + friend check_result_t index_cond_func_myisam(void *arg); +}; |