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/* 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 */
#ifndef STORAGE_MYISAM_HA_MYISAM_H
#define STORAGE_MYISAM_HA_MYISAM_H
#include <drizzled/handler.h>
#include <mysys/thr_lock.h>
/* class for the the myisam handler */
#include <storage/myisam/myisam.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 TYPELIB myisam_recover_typelib;
extern ulong myisam_recover_options;
#ifdef __cplusplus
extern "C" {
#endif
bool index_cond_func_myisam(void *arg);
#ifdef __cplusplus
}
#endif
class ha_myisam: public handler
{
MI_INFO *file;
uint64_t int_table_flags;
char *data_file_name, *index_file_name;
bool can_enable_indexes;
int repair(Session *session, 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(uint32_t key_number);
const char **bas_ext() const;
uint64_t table_flags() const { return int_table_flags; }
int index_init(uint32_t idx, bool sorted);
int index_end();
uint32_t index_flags(uint32_t inx, uint32_t part, bool all_parts) const;
uint32_t max_supported_keys() const { return MI_MAX_KEY; }
uint32_t max_supported_key_length() const { return MI_MAX_KEY_LENGTH; }
uint32_t max_supported_key_part_length() const { return MI_MAX_KEY_LENGTH; }
uint32_t checksum() const;
int open(const char *name, int mode, uint32_t test_if_locked);
int close(void);
int write_row(unsigned char * buf);
int update_row(const unsigned char * old_data, unsigned char * new_data);
int delete_row(const unsigned char * buf);
int index_read_map(unsigned char *buf, const unsigned char *key, key_part_map keypart_map,
enum ha_rkey_function find_flag);
int index_read_idx_map(unsigned char *buf, uint32_t index, const unsigned char *key,
key_part_map keypart_map,
enum ha_rkey_function find_flag);
int index_read_last_map(unsigned char *buf, const unsigned char *key, key_part_map keypart_map);
int index_next(unsigned char * buf);
int index_prev(unsigned char * buf);
int index_first(unsigned char * buf);
int index_last(unsigned char * buf);
int index_next_same(unsigned char *buf, const unsigned char *key, uint32_t keylen);
int rnd_init(bool scan);
int rnd_next(unsigned char *buf);
int rnd_pos(unsigned char * buf, unsigned char *pos);
int restart_rnd_next(unsigned char *buf, unsigned char *pos);
void position(const unsigned char *record);
int info(uint);
int extra(enum ha_extra_function operation);
int extra_opt(enum ha_extra_function operation, uint32_t cache_size);
int reset(void);
int external_lock(Session *session, int lock_type);
int delete_all_rows(void);
int disable_indexes(uint32_t mode);
int enable_indexes(uint32_t mode);
int indexes_are_disabled(void);
void start_bulk_insert(ha_rows rows);
int end_bulk_insert();
ha_rows records_in_range(uint32_t 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(Session *session, THR_LOCK_DATA **to,
enum thr_lock_type lock_type);
virtual void get_auto_increment(uint64_t offset, uint64_t increment,
uint64_t nb_desired_values,
uint64_t *first_value,
uint64_t *nb_reserved_values);
int rename_table(const char * from, const char * to);
int delete_table(const char *name);
int check(Session* session, HA_CHECK_OPT* check_opt);
int analyze(Session* session,HA_CHECK_OPT* check_opt);
int repair(Session* session, HA_CHECK_OPT* check_opt);
bool check_and_repair(Session *session);
bool is_crashed() const;
bool auto_repair() const { return myisam_recover_options != 0; }
int optimize(Session* session, HA_CHECK_OPT* check_opt);
int assign_to_keycache(Session* session, HA_CHECK_OPT* check_opt);
bool check_if_incompatible_data(HA_CREATE_INFO *info, uint32_t table_changes);
#ifdef HAVE_QUERY_CACHE
bool register_query_cache_table(Session *session, char *table_key,
uint32_t key_length,
qc_engine_callback
*engine_callback,
uint64_t *engine_data);
#endif
MI_INFO *file_ptr(void)
{
return file;
}
int read_range_first(const key_range *start_key, const key_range *end_key,
bool eq_range_arg, bool sorted);
int read_range_next();
public:
/**
* Multi Range Read interface
*/
int multi_range_read_init(RANGE_SEQ_IF *seq, void *seq_init_param,
uint32_t n_ranges, uint32_t mode, HANDLER_BUFFER *buf);
int multi_range_read_next(char **range_info);
ha_rows multi_range_read_info_const(uint32_t keyno, RANGE_SEQ_IF *seq,
void *seq_init_param,
uint32_t n_ranges, uint32_t *bufsz,
uint32_t *flags, COST_VECT *cost);
int multi_range_read_info(uint32_t keyno, uint32_t n_ranges, uint32_t keys,
uint32_t *bufsz, uint32_t *flags, COST_VECT *cost);
/* Index condition pushdown implementation */
Item *idx_cond_push(uint32_t keyno, Item* idx_cond);
bool check_if_supported_virtual_columns(void) { return true; }
private:
DsMrr_impl ds_mrr;
key_map keys_with_parts;
friend bool index_cond_func_myisam(void *arg);
};
#endif /* STORAGE_MYISAM_HA_MYISAM_H */
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