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/*****************************************************************************
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Copyright (c) 2000, 2009, MySQL AB & Innobase Oy. All Rights Reserved.
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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Place, Suite 330, Boston, MA 02111-1307 USA
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*****************************************************************************/
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This file is based on ha_berkeley.h of MySQL distribution
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This file defines the Innodb Cursor: the interface between MySQL and
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#ifndef INNODB_HANDLER_HA_INNODB_H
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#define INNODB_HANDLER_HA_INNODB_H
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#include <drizzled/cursor.h>
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#include <drizzled/thr_lock.h>
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/** InnoDB table share */
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typedef struct st_innobase_share {
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THR_LOCK lock; /*!< MySQL lock protecting
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const char* table_name; /*!< InnoDB table name */
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uint use_count; /*!< reference count,
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incremented in get_share()
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and decremented in free_share() */
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void* table_name_hash;/*!< hash table chain node */
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/** InnoDB B-tree index */
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struct dict_index_struct;
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/** Prebuilt structures in an Innobase table handle used within MySQL */
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struct row_prebuilt_struct;
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/** InnoDB B-tree index */
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typedef struct dict_index_struct dict_index_t;
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/** Prebuilt structures in an Innobase table handle used within MySQL */
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typedef struct row_prebuilt_struct row_prebuilt_t;
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/** The class defining a handle to an Innodb table */
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class ha_innobase: public Cursor
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row_prebuilt_t* prebuilt; /*!< prebuilt struct in InnoDB, used
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to save CPU time with prebuilt data
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Session* user_session; /*!< the thread handle of the user
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currently using the handle; this is
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set in external_lock function */
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INNOBASE_SHARE* share; /*!< information for MySQL
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unsigned char* upd_buff; /*!< buffer used in updates */
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unsigned char* key_val_buff; /*!< buffer used in converting
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search key values from MySQL format
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ulong upd_and_key_val_buff_len;
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/* the length of each of the previous
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ulong start_of_scan; /*!< this is set to 1 when we are
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starting a table scan but have not
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yet fetched any row, else 0 */
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uint last_match_mode;/* match mode of the latest search:
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ROW_SEL_EXACT, ROW_SEL_EXACT_PREFIX,
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uint num_write_row; /*!< number of write_row() calls */
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UNIV_INTERN uint store_key_val_for_row(uint keynr, char* buff,
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uint buff_len, const unsigned char* record);
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UNIV_INTERN void update_session(Session* session);
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UNIV_INTERN void update_session();
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UNIV_INTERN int change_active_index(uint32_t keynr);
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UNIV_INTERN int general_fetch(unsigned char* buf, uint32_t direction, uint32_t match_mode);
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UNIV_INTERN ulint innobase_lock_autoinc();
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UNIV_INTERN uint64_t innobase_peek_autoinc();
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UNIV_INTERN ulint innobase_set_max_autoinc(uint64_t auto_inc);
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UNIV_INTERN ulint innobase_reset_autoinc(uint64_t auto_inc);
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UNIV_INTERN ulint innobase_get_autoinc(uint64_t* value);
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ulint innobase_update_autoinc(uint64_t auto_inc);
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UNIV_INTERN ulint innobase_initialize_autoinc();
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UNIV_INTERN dict_index_t* innobase_get_index(uint keynr);
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UNIV_INTERN uint64_t innobase_get_int_col_max_value(const Field* field);
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/* Init values for the class: */
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UNIV_INTERN ha_innobase(drizzled::plugin::StorageEngine &engine,
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TableShare &table_arg);
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UNIV_INTERN ~ha_innobase();
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Get the row type from the storage engine. If this method returns
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ROW_TYPE_NOT_USED, the information in HA_CREATE_INFO should be used.
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UNIV_INTERN enum row_type get_row_type() const;
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UNIV_INTERN const char* index_type(uint key_number);
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UNIV_INTERN const key_map* keys_to_use_for_scanning();
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UNIV_INTERN int open(const char *name, int mode, uint test_if_locked);
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UNIV_INTERN int close(void);
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UNIV_INTERN double scan_time();
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UNIV_INTERN double read_time(uint index, uint ranges, ha_rows rows);
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UNIV_INTERN int write_row(unsigned char * buf);
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UNIV_INTERN int update_row(const unsigned char * old_data, unsigned char * new_data);
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UNIV_INTERN int delete_row(const unsigned char * buf);
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UNIV_INTERN bool was_semi_consistent_read();
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UNIV_INTERN void try_semi_consistent_read(bool yes);
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UNIV_INTERN void unlock_row();
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UNIV_INTERN int index_init(uint index, bool sorted);
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UNIV_INTERN int index_end();
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UNIV_INTERN int index_read(unsigned char * buf, const unsigned char * key,
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uint key_len, enum ha_rkey_function find_flag);
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UNIV_INTERN int index_read_idx(unsigned char * buf, uint index, const unsigned char * key,
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uint key_len, enum ha_rkey_function find_flag);
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UNIV_INTERN int index_read_last(unsigned char * buf, const unsigned char * key, uint key_len);
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UNIV_INTERN int index_next(unsigned char * buf);
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UNIV_INTERN int index_next_same(unsigned char * buf, const unsigned char *key, uint keylen);
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UNIV_INTERN int index_prev(unsigned char * buf);
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UNIV_INTERN int index_first(unsigned char * buf);
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UNIV_INTERN int index_last(unsigned char * buf);
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UNIV_INTERN int rnd_init(bool scan);
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UNIV_INTERN int rnd_end();
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UNIV_INTERN int rnd_next(unsigned char *buf);
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UNIV_INTERN int rnd_pos(unsigned char * buf, unsigned char *pos);
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UNIV_INTERN void position(const unsigned char *record);
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UNIV_INTERN int info(uint);
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UNIV_INTERN int analyze(Session* session);
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UNIV_INTERN int discard_or_import_tablespace(bool discard);
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UNIV_INTERN int extra(enum ha_extra_function operation);
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UNIV_INTERN int reset();
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UNIV_INTERN int external_lock(Session *session, int lock_type);
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UNIV_INTERN int start_stmt(Session *session, thr_lock_type lock_type);
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void position(unsigned char *record);
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UNIV_INTERN ha_rows records_in_range(uint inx, key_range *min_key, key_range
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UNIV_INTERN ha_rows estimate_rows_upper_bound();
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UNIV_INTERN int delete_all_rows();
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UNIV_INTERN int check(Session* session);
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UNIV_INTERN char* update_table_comment(const char* comment);
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UNIV_INTERN char* get_foreign_key_create_info();
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UNIV_INTERN int get_foreign_key_list(Session *session, List<FOREIGN_KEY_INFO> *f_key_list);
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UNIV_INTERN bool can_switch_engines();
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UNIV_INTERN uint referenced_by_foreign_key();
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UNIV_INTERN void free_foreign_key_create_info(char* str);
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UNIV_INTERN THR_LOCK_DATA **store_lock(Session *session, THR_LOCK_DATA **to,
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enum thr_lock_type lock_type);
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UNIV_INTERN void init_table_handle_for_HANDLER();
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UNIV_INTERN virtual void get_auto_increment(uint64_t offset,
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uint64_t nb_desired_values,
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uint64_t *first_value,
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uint64_t *nb_reserved_values);
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UNIV_INTERN int reset_auto_increment(uint64_t value);
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UNIV_INTERN bool primary_key_is_clustered();
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UNIV_INTERN int cmp_ref(const unsigned char *ref1, const unsigned char *ref2);
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/** Fast index creation (smart ALTER TABLE) @see handler0alter.cc @{ */
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UNIV_INTERN int add_index(TABLE *table_arg, KEY *key_info, uint num_of_keys);
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UNIV_INTERN int prepare_drop_index(TABLE *table_arg, uint *key_num,
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UNIV_INTERN int final_drop_index(TABLE *table_arg);
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int read_range_first(const key_range *start_key, const key_range *end_key,
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bool eq_range_arg, bool sorted);
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int read_range_next();
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char **session_query(Session *session);
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/** Get the file name of the MySQL binlog.
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* @return the name of the binlog file
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const char* drizzle_bin_log_file_name(void);
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/** Get the current position of the MySQL binlog.
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* @return byte offset from the beginning of the binlog
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uint64_t drizzle_bin_log_file_pos(void);
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Check if a user thread is a replication slave thread
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@param session user thread
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@retval 0 the user thread is not a replication slave thread
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@retval 1 the user thread is a replication slave thread
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int session_slave_thread(const Session *session);
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Check if a user thread is running a non-transactional update
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@param session user thread
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@retval 0 the user thread is not running a non-transactional update
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@retval 1 the user thread is running a non-transactional update
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int session_non_transactional_update(const Session *session);
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Get the user thread's binary logging format
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@param session user thread
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@return Value to be used as index into the binlog_format_names array
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int session_binlog_format(const Session *session);
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Mark transaction to rollback and mark error as fatal to a sub-statement.
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@param session Thread handle
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@param all TRUE <=> rollback main transaction.
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void session_mark_transaction_to_rollback(Session *session, bool all);
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typedef struct trx_struct trx_t;
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/********************************************************************//**
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@file Cursor/ha_innodb.h
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Converts an InnoDB error code to a MySQL error code and also tells to MySQL
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about a possible transaction rollback inside InnoDB caused by a lock wait
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timeout or a deadlock.
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@return MySQL error code */
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extern "C" UNIV_INTERN
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convert_error_code_to_mysql(
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/*========================*/
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int error, /*!< in: InnoDB error code */
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ulint flags, /*!< in: InnoDB table flags, or 0 */
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Session *session); /*!< in: user thread handle or NULL */
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/*********************************************************************//**
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Allocates an InnoDB transaction for a MySQL Cursor object.
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@return InnoDB transaction handle */
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extern "C" UNIV_INTERN
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innobase_trx_allocate(
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/*==================*/
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Session *session); /*!< in: user thread handle */
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#endif /* INNODB_HANDLER_HA_INNODB_H */