database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-30 16:24:05 +03:00
Code Activity

Update for BTREE keys in HEAP tables

Browse Source 
Split handler->option_flag() to handler->table_flags() and handler->index_flags()
This commit is contained in:
monty@tik.mysql.fi
2002-04-12 21:35:46 +03:00
parent e857f561fd
commit 056175a1ce
32 changed files with 222 additions and 158 deletions
Download Patch File Download Diff File Expand all files Collapse all files

76
sql/handler.h
View File

@ -41,26 +41,19 @@
#define HA_ADMIN_INTERNAL_ERROR -4
#define HA_ADMIN_INVALID -5
/* Bits in bas_flag to show what database can do */
#define HA_READ_NEXT 1 /* Read next record with same key */
#define HA_READ_PREV 2 /* Read prev. record with same key */
#define HA_READ_ORDER 4 /* Read through record-keys in order */
#define HA_READ_RND_SAME 8 /* Read RND-record to KEY-record
/* Bits in table_flags() to show what database can do */
#define HA_READ_RND_SAME 1 /* Read RND-record to KEY-record
(To update with RND-read) */
#define HA_KEYPOS_TO_RNDPOS 16 /* ha_info gives pos to record */
#define HA_TABLE_SCAN_ON_INDEX 32 /* No separate data/index file */
#define HA_REC_NOT_IN_SEQ 64 /* ha_info don't return recnumber;
#define HA_KEYPOS_TO_RNDPOS 2 /* ha_info gives pos to record */
#define HA_TABLE_SCAN_ON_INDEX 4 /* No separate data/index file */
#define HA_REC_NOT_IN_SEQ 8 /* ha_info don't return recnumber;
It returns a position to ha_r_rnd */
#define HA_ONLY_WHOLE_INDEX 128 /* Can't use part key searches */
#define HA_NOT_READ_PREFIX_LAST 256 /* RSAME can't restore index */
#define HA_WRONG_ASCII_ORDER 512 /* Can't use sorting through key */
#define HA_HAVE_KEY_READ_ONLY 1024 /* Can read only keys (no record) */
#define HA_READ_NOT_EXACT_KEY 2048 /* Can read record after/before key */
#define HA_NO_INDEX 4096 /* No index needed for next/prev */
#define HA_KEY_READ_WRONG_STR 16384 /* keyread returns converted strings */
#define HA_NULL_KEY 32768 /* One can have keys with NULL */
#define HA_DUPP_POS 65536 /* ha_position() gives dupp row */
#define HA_NO_BLOBS 131072 /* Doesn't support blobs */
#define HA_HAVE_KEY_READ_ONLY 16 /* Can read only keys (no record) */
#define HA_NO_INDEX 32 /* No index needed for next/prev */
#define HA_KEY_READ_WRONG_STR 64 /* keyread returns converted strings */
#define HA_NULL_KEY 128 /* One can have keys with NULL */
#define HA_DUPP_POS 256 /* ha_position() gives dupp row */
#define HA_NO_BLOBS 512 /* Doesn't support blobs */
#define HA_BLOB_KEY (HA_NO_BLOBS*2) /* key on blob */
#define HA_AUTO_PART_KEY (HA_BLOB_KEY*2)
#define HA_REQUIRE_PRIMARY_KEY (HA_AUTO_PART_KEY*2)
@ -74,31 +67,41 @@
#define HA_NO_PREFIX_CHAR_KEYS (HA_NO_TEMP_TABLES*2)
#define HA_CAN_FULLTEXT (HA_NO_PREFIX_CHAR_KEYS*2)
#define HA_CAN_SQL_HANDLER (HA_CAN_FULLTEXT*2)
#define HA_NO_AUTO_INCREMENT (HA_CAN_SQL_HANDLER*2)
/* Old not used flags */
/*
Next record gives next record according last record read (even
if database is updated after read)
if database is updated after read). Not used at this point.
*/
#define HA_LASTKEY_ORDER 0
#define HA_LASTKEY_ORDER (HA_NO_AUTO_INCREMENT*2)
/* Parameters for open() (in register form->filestat) */
/* HA_GET_INFO does an implicit HA_ABORT_IF_LOCKED */
/* bits in index_flags(index_number) for what you can do with index */
#define HA_WRONG_ASCII_ORDER 1 /* Can't use sorting through key */
#define HA_READ_NEXT 2 /* Read next record with same key */
#define HA_READ_PREV 4 /* Read prev. record with same key */
#define HA_READ_ORDER 8 /* Read through record-keys in order */
#define HA_ONLY_WHOLE_INDEX 16 /* Can't use part key searches */
#define HA_NOT_READ_PREFIX_LAST 32
/*
Parameters for open() (in register form->filestat)
HA_GET_INFO does an implicit HA_ABORT_IF_LOCKED
*/
#define HA_OPEN_KEYFILE 1
#define HA_OPEN_RNDFILE 2
#define HA_GET_INDEX 4
#define HA_GET_INFO 8 /* do a ha_info() after open */
#define HA_READ_ONLY 16 /* File opened as readonly */
#define HA_TRY_READ_ONLY 32 /* Try readonly if can't */
/* open with read and write */
/* Try readonly if can't open with read and write */
#define HA_TRY_READ_ONLY 32
#define HA_WAIT_IF_LOCKED 64 /* Wait if locked on open */
#define HA_ABORT_IF_LOCKED 128 /* skip if locked on open.*/
#define HA_BLOCK_LOCK 256 /* unlock when reading some records */
#define HA_OPEN_TEMPORARY 512
/* Error on write which is recoverable (Key exist) */
/* Errors on write which is recoverable (Key exist) */
#define HA_WRITE_SKIP 121 /* Duplicate key on write */
#define HA_READ_CHECK 123 /* Update with is recoverable */
#define HA_CANT_DO_THAT 131 /* Databasehandler can't do it */
@ -295,10 +298,11 @@ public:
virtual int optimize(THD* thd,HA_CHECK_OPT* check_opt);
virtual int analyze(THD* thd, HA_CHECK_OPT* check_opt);
virtual int backup(THD* thd, HA_CHECK_OPT* check_opt);
/*
restore assumes .frm file must exist, and that generate_table() has been
called; It will just copy the data file and run repair.
*/
virtual int restore(THD* thd, HA_CHECK_OPT* check_opt);
// assumes .frm file must exist, and you must have already called
// generate_table() - it will just copy the data file and run repair
virtual int dump(THD* thd, int fd = -1) { return ER_DUMP_NOT_IMPLEMENTED; }
virtual void deactivate_non_unique_index(ha_rows rows) {}
virtual bool activate_all_index(THD *thd) {return 0;}
@ -314,7 +318,11 @@ public:
/* The following can be called without an open handler */
virtual const char *table_type() const =0;
virtual const char **bas_ext() const =0;
virtual ulong option_flag() const =0;
virtual ulong table_flags(void) const =0;
virtual ulong index_flags(uint idx) const
{
return (HA_READ_NEXT | HA_READ_PREV | HA_READ_ORDER);
}
virtual uint max_record_length() const =0;
virtual uint max_keys() const =0;
virtual uint max_key_parts() const =0;
@ -360,10 +368,8 @@ int ha_delete_table(enum db_type db_type, const char *path);
void ha_drop_database(char* path);
void ha_key_cache(void);
int ha_start_stmt(THD *thd);
int ha_report_binlog_offset_and_commit(
THD *thd,
char *log_file_name,
my_off_t end_offset);
int ha_report_binlog_offset_and_commit(THD *thd, char *log_file_name,
my_off_t end_offset);
int ha_commit_trans(THD *thd, THD_TRANS *trans);
int ha_rollback_trans(THD *thd, THD_TRANS *trans);
int ha_autocommit_or_rollback(THD *thd, int error);