diff options
Diffstat (limited to 'include/my_base.h')
| -rw-r--r-- | include/my_base.h | 110 |
1 files changed, 95 insertions, 15 deletions
diff --git a/include/my_base.h b/include/my_base.h index 1261a95175f..076eed9998f 100644 --- a/include/my_base.h +++ b/include/my_base.h @@ -146,7 +146,13 @@ enum ha_extra_function { On-the-fly switching between unique and non-unique key inserting. */ HA_EXTRA_CHANGE_KEY_TO_UNIQUE, - HA_EXTRA_CHANGE_KEY_TO_DUP + HA_EXTRA_CHANGE_KEY_TO_DUP, + /* + When using HA_EXTRA_KEYREAD, overwrite only key member fields and keep + other fields intact. When this is off (by default) InnoDB will use memcpy + to overwrite entire row. + */ + HA_EXTRA_KEYREAD_PRESERVE_FIELDS }; /* The following is parameter to ha_panic() */ @@ -175,8 +181,13 @@ enum ha_base_keytype { HA_KEYTYPE_INT24=12, HA_KEYTYPE_UINT24=13, HA_KEYTYPE_INT8=14, - HA_KEYTYPE_VARTEXT=15, /* Key is sorted as letters */ - HA_KEYTYPE_VARBINARY=16 /* Key is sorted as unsigned chars */ + /* Varchar (0-255 bytes) with length packed with 1 byte */ + HA_KEYTYPE_VARTEXT1=15, /* Key is sorted as letters */ + HA_KEYTYPE_VARBINARY1=16, /* Key is sorted as unsigned chars */ + /* Varchar (0-65535 bytes) with length packed with 2 bytes */ + HA_KEYTYPE_VARTEXT2=17, /* Key is sorted as letters */ + HA_KEYTYPE_VARBINARY2=18, /* Key is sorted as unsigned chars */ + HA_KEYTYPE_BIT=19 }; #define HA_MAX_KEYTYPE 31 /* Must be log2-1 */ @@ -207,7 +218,7 @@ enum ha_base_keytype { /* Key has a part that can have end space. If this is an unique key we have to handle it differently from other unique keys as we can find - many matching rows for one key (becaue end space are not compared) + many matching rows for one key (because end space are not compared) */ #define HA_END_SPACE_KEY 4096 @@ -215,12 +226,18 @@ enum ha_base_keytype { #define HA_SPACE_PACK 1 /* Pack space in key-seg */ #define HA_PART_KEY_SEG 4 /* Used by MySQL for part-key-cols */ -#define HA_VAR_LENGTH 8 +#define HA_VAR_LENGTH_PART 8 #define HA_NULL_PART 16 #define HA_BLOB_PART 32 #define HA_SWAP_KEY 64 #define HA_REVERSE_SORT 128 /* Sort key in reverse order */ #define HA_NO_SORT 256 /* do not bother sorting on this keyseg */ +/* + End space in unique/varchar are considered equal. (Like 'a' and 'a ') + Only needed for internal temporary tables. +*/ +#define HA_END_SPACE_ARE_EQUAL 512 +#define HA_BIT_PART 1024 /* optionbits for database */ #define HA_OPTION_PACK_RECORD 1 @@ -231,7 +248,7 @@ enum ha_base_keytype { #define HA_OPTION_CHECKSUM 32 #define HA_OPTION_DELAY_KEY_WRITE 64 #define HA_OPTION_NO_PACK_KEYS 128 /* Reserved for MySQL */ -#define HA_OPTION_CREATE_FROM_ENGINE 256 +#define HA_OPTION_CREATE_FROM_ENGINE 256 #define HA_OPTION_TEMP_COMPRESS_RECORD ((uint) 16384) /* set by isamchk */ #define HA_OPTION_READ_ONLY_DATA ((uint) 32768) /* Set by isamchk */ @@ -243,19 +260,55 @@ enum ha_base_keytype { #define HA_CREATE_CHECKSUM 8 #define HA_CREATE_DELAY_KEY_WRITE 64 - /* Bits in flag to _status */ +/* + The following flags (OR-ed) are passed to handler::info() method. + The method copies misc handler information out of the storage engine + to data structures accessible from MySQL -#define HA_STATUS_POS 1 /* Return position */ -#define HA_STATUS_NO_LOCK 2 /* Don't use external lock */ -#define HA_STATUS_TIME 4 /* Return update time */ -#define HA_STATUS_CONST 8 /* Return constants values */ -#define HA_STATUS_VARIABLE 16 -#define HA_STATUS_ERRKEY 32 -#define HA_STATUS_AUTO 64 + Same flags are also passed down to mi_status, myrg_status, etc. +*/ + +/* this one is not used */ +#define HA_STATUS_POS 1 +/* + assuming the table keeps shared actual copy of the 'info' and + local, possibly outdated copy, the following flag means that + it should not try to get the actual data (locking the shared structure) + slightly outdated version will suffice +*/ +#define HA_STATUS_NO_LOCK 2 +/* update the time of the last modification (in handler::update_time) */ +#define HA_STATUS_TIME 4 +/* + update the 'constant' part of the info: + handler::max_data_file_length, max_index_file_length, create_time + sortkey, ref_length, block_size, data_file_name, index_file_name. + handler::table->s->keys_in_use, keys_for_keyread, rec_per_key +*/ +#define HA_STATUS_CONST 8 +/* + update the 'variable' part of the info: + handler::records, deleted, data_file_length, index_file_length, + delete_length, check_time, mean_rec_length +*/ +#define HA_STATUS_VARIABLE 16 +/* + get the information about the key that caused last duplicate value error + update handler::errkey and handler::dupp_ref + see handler::get_dup_key() +*/ +#define HA_STATUS_ERRKEY 32 +/* + update handler::auto_increment_value +*/ +#define HA_STATUS_AUTO 64 /* Errorcodes given by functions */ /* opt_sum_query() assumes these codes are > 1 */ +/* Do not add error numbers before HA_ERR_FIRST. */ +/* If necessary to add lower numbers, change HA_ERR_FIRST accordingly. */ +#define HA_ERR_FIRST 120 /*Copy first error nr.*/ #define HA_ERR_KEY_NOT_FOUND 120 /* Didn't find key on read or update */ #define HA_ERR_FOUND_DUPP_KEY 121 /* Dupplicate key on write */ #define HA_ERR_RECORD_CHANGED 123 /* Uppdate with is recoverable */ @@ -292,6 +345,12 @@ enum ha_base_keytype { #define HA_ERR_TABLE_EXIST 156 /* The table existed in storage engine */ #define HA_ERR_NO_CONNECTION 157 /* Could not connect to storage engine */ #define HA_ERR_NULL_IN_SPATIAL 158 /* NULLs are not supported in spatial index */ +#define HA_ERR_TABLE_DEF_CHANGED 159 /* The table changed in storage engine */ +#define HA_ERR_TABLE_NEEDS_UPGRADE 160 /* The table changed in storage engine */ + +#define HA_ERR_LAST 160 /*Copy last error nr.*/ +/* Add error numbers before HA_ERR_LAST and change it accordingly. */ +#define HA_ERR_ERRORS (HA_ERR_LAST - HA_ERR_FIRST + 1) /* Other constants */ @@ -342,10 +401,12 @@ enum ha_base_keytype { #define HA_STATE_EXTEND_BLOCK 2048 #define HA_STATE_RNEXT_SAME 4096 /* rnext_same occupied lastkey2 */ +/* myisampack expects no more than 32 field types. */ enum en_fieldtype { FIELD_LAST=-1,FIELD_NORMAL,FIELD_SKIP_ENDSPACE,FIELD_SKIP_PRESPACE, FIELD_SKIP_ZERO,FIELD_BLOB,FIELD_CONSTANT,FIELD_INTERVALL,FIELD_ZERO, - FIELD_VARCHAR,FIELD_CHECK + FIELD_VARCHAR,FIELD_CHECK, + FIELD_enum_val_count }; enum data_file_type { @@ -354,6 +415,15 @@ enum data_file_type { /* For key ranges */ +#define NO_MIN_RANGE 1 +#define NO_MAX_RANGE 2 +#define NEAR_MIN 4 +#define NEAR_MAX 8 +#define UNIQUE_RANGE 16 +#define EQ_RANGE 32 +#define NULL_RANGE 64 +#define GEOM_FLAG 128 + typedef struct st_key_range { const byte *key; @@ -361,6 +431,14 @@ typedef struct st_key_range enum ha_rkey_function flag; } key_range; +typedef struct st_key_multi_range +{ + key_range start_key; + key_range end_key; + char *ptr; /* Free to use by caller (ptr to row etc) */ + uint range_flag; /* key range flags see above */ +} KEY_MULTI_RANGE; + /* For number of records */ #ifdef BIG_TABLES @@ -380,4 +458,6 @@ typedef ulong ha_rows; #define MAX_FILE_SIZE LONGLONG_MAX #endif +#define HA_VARCHAR_PACKLENGTH(field_length) ((field_length) < 256 ? 1 :2) + #endif /* _my_base_h */ |