summaryrefslogtreecommitdiffstats
path: root/storage/myisam/ha_myisam.h
diff options
context:
space:
mode:
Diffstat (limited to 'storage/myisam/ha_myisam.h')
-rw-r--r--storage/myisam/ha_myisam.h180
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 &param, 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);
+};