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/*
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) override;
const char *index_type(uint key_number) override;
ulonglong table_flags() const override { return int_table_flags; }
int index_init(uint idx, bool sorted) override;
int index_end() override;
int rnd_end() override;
ulong index_flags(uint inx, uint part, bool all_parts) const override;
uint max_supported_keys() const override { return MI_MAX_KEY; }
uint max_supported_key_parts() const override { return HA_MAX_KEY_SEG; }
uint max_supported_key_length() const override { return HA_MAX_KEY_LENGTH; }
uint max_supported_key_part_length() const override
{ return HA_MAX_KEY_LENGTH; }
void change_table_ptr(TABLE *table_arg, TABLE_SHARE *share) override;
int open(const char *name, int mode, uint test_if_locked) override;
int close(void) override;
int write_row(const uchar * buf) override;
int update_row(const uchar * old_data, const uchar * new_data) override;
int delete_row(const uchar * buf) override;
int index_read_map(uchar *buf, const uchar *key, key_part_map keypart_map,
enum ha_rkey_function find_flag) override;
int index_read_idx_map(uchar *buf, uint index, const uchar *key,
key_part_map keypart_map,
enum ha_rkey_function find_flag) override;
int index_next(uchar * buf) override;
int index_prev(uchar * buf) override;
int index_first(uchar * buf) override;
int index_last(uchar * buf) override;
int index_next_same(uchar *buf, const uchar *key, uint keylen) override;
int ft_init() override
{
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) override
{
return ft_init_search(flags,file,inx,
(uchar *)key->ptr(), key->length(), key->charset(),
table->record[0]);
}
int ft_read(uchar *buf) override;
int rnd_init(bool scan) override;
int rnd_next(uchar *buf) override;
int rnd_pos(uchar * buf, uchar *pos) override;
int remember_rnd_pos() override;
int restart_rnd_next(uchar *buf) override;
void position(const uchar *record) override;
IO_AND_CPU_COST rnd_pos_time(ha_rows rows) override;
int info(uint) override;
int extra(enum ha_extra_function operation) override;
int extra_opt(enum ha_extra_function operation, ulong cache_size) override;
int reset(void) override;
int external_lock(THD *thd, int lock_type) override;
int delete_all_rows(void) override;
int reset_auto_increment(ulonglong value) override;
int disable_indexes(uint mode) override;
int enable_indexes(uint mode) override;
int indexes_are_disabled(void) override;
void start_bulk_insert(ha_rows rows, uint flags) override;
int end_bulk_insert() override;
ha_rows records_in_range(uint inx, const key_range *min_key,
const key_range *max_key, page_range *pages) override;
void update_create_info(HA_CREATE_INFO *create_info) override;
int create(const char *name, TABLE *form, HA_CREATE_INFO *create_info) override;
THR_LOCK_DATA **store_lock(THD *thd, THR_LOCK_DATA **to,
enum thr_lock_type lock_type) override;
void get_auto_increment(ulonglong offset, ulonglong increment,
ulonglong nb_desired_values,
ulonglong *first_value,
ulonglong *nb_reserved_values) override;
int rename_table(const char * from, const char * to) override;
int delete_table(const char *name) override;
int check_for_upgrade(HA_CHECK_OPT *check_opt) override;
int check(THD* thd, HA_CHECK_OPT* check_opt) override;
int analyze(THD* thd,HA_CHECK_OPT* check_opt) override;
int repair(THD* thd, HA_CHECK_OPT* check_opt) override;
bool check_and_repair(THD *thd) override;
bool is_crashed() const override;
bool auto_repair(int error) const override
{
return (myisam_recover_options != HA_RECOVER_OFF &&
error == HA_ERR_CRASHED_ON_USAGE);
}
int optimize(THD* thd, HA_CHECK_OPT* check_opt) override;
int assign_to_keycache(THD* thd, HA_CHECK_OPT* check_opt) override;
int preload_keys(THD* thd, HA_CHECK_OPT* check_opt) override;
enum_alter_inplace_result check_if_supported_inplace_alter(TABLE *new_table,
Alter_inplace_info *alter_info)
override;
bool check_if_incompatible_data(HA_CREATE_INFO *info, uint table_changes)
override;
#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) override;
#endif
/**
* 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) override;
int multi_range_read_next(range_id_t *range_info) override;
ha_rows multi_range_read_info_const(uint keyno, RANGE_SEQ_IF *seq,
void *seq_init_param,
uint n_ranges, uint *bufsz,
uint *flags, ha_rows limit,
Cost_estimate *cost) override;
ha_rows multi_range_read_info(uint keyno, uint n_ranges, uint keys,
uint key_parts, uint *bufsz,
uint *flags, Cost_estimate *cost) override;
int multi_range_read_explain_info(uint mrr_mode, char *str, size_t size) override;
/* Index condition pushdown implementation */
Item *idx_cond_push(uint keyno, Item* idx_cond) override;
bool rowid_filter_push(Rowid_filter* rowid_filter) override;
void rowid_filter_changed() override;
/* Used by myisammrg */
MI_INFO *file_ptr(void)
{
return file;
}
private:
DsMrr_impl ds_mrr;
friend check_result_t index_cond_func_myisam(void *arg);
};
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