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Diffstat (limited to 'sql/structs.h')
| -rw-r--r-- | sql/structs.h | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/sql/structs.h b/sql/structs.h new file mode 100644 index 00000000000..b32f957da25 --- /dev/null +++ b/sql/structs.h @@ -0,0 +1,160 @@ +/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB + + 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; either version 2 of the License, or + (at your option) any later version. + + 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ + + +/* The old structures from unireg */ + +struct st_table; +class Field; + +typedef struct st_date_format { /* How to print date */ + uint pos[6]; /* Positions to YY.MM.DD HH:MM:SS */ +} DATE_FORMAT; + + +typedef struct st_keyfile_info { /* used with ha_info() */ + byte ref[MAX_REFLENGTH]; /* Pointer to current row */ + byte dupp_ref[MAX_REFLENGTH]; /* Pointer to dupp row */ + uint ref_length; /* Length of ref (1-8) */ + uint block_size; /* index block size */ + File filenr; /* (uniq) filenr for table */ + ha_rows records; /* Records i datafilen */ + ha_rows deleted; /* Deleted records */ + ulonglong data_file_length; /* Length off data file */ + ulonglong max_data_file_length; /* Length off data file */ + ulonglong index_file_length; + ulonglong max_index_file_length; + ulonglong delete_length; /* Free bytes */ + ulonglong auto_increment_value; + int errkey,sortkey; /* Last errorkey and sorted by */ + time_t create_time; /* When table was created */ + time_t check_time; + time_t update_time; + ulong mean_rec_length; /* physical reclength */ +} KEYFILE_INFO; + + +typedef struct st_key_part_info { /* Info about a key part */ + Field *field; + uint offset; /* offset in record (from 0) */ + uint null_offset; // Offset to null_bit in record + uint16 length; /* Length of key_part */ + uint16 store_length; + uint16 key_type; + uint16 fieldnr; /* Fieldnum in UNIREG */ + uint8 key_part_flag; /* 0 or HA_REVERSE_SORT */ + uint8 type; + uint8 null_bit; // Position to null_bit +} KEY_PART_INFO ; + + +typedef struct st_key { + uint key_length; /* Tot length of key */ + uint flags; /* dupp key and pack flags */ + uint key_parts; /* How many key_parts */ + uint extra_length; + uint usable_key_parts; /* Should normally be = key_parts */ + KEY_PART_INFO *key_part; + char *name; /* Name of key */ + ulong *rec_per_key; /* Key part distribution */ +} KEY; + + +struct st_join_table; + +typedef struct st_reginfo { /* Extra info about reg */ + struct st_join_table *join_tab; /* Used by SELECT() */ + enum thr_lock_type lock_type; /* How database is used */ + bool not_exists_optimize; + bool impossible_range; +} REGINFO; + + +struct st_read_record; /* For referense later */ +class SQL_SELECT; +class THD; +class handler; + +typedef struct st_read_record { /* Parameter to read_record */ + struct st_table *table; /* Head-form */ + handler *file; + struct st_table **forms; /* head and ref forms */ + int (*read_record)(struct st_read_record *); + THD *thd; + SQL_SELECT *select; + uint cache_records; + uint ref_length,struct_length,reclength,rec_cache_size,error_offset; + uint index; + byte *ref_pos; /* pointer to form->refpos */ + byte *record; + byte *cache,*cache_pos,*cache_end,*read_positions; + IO_CACHE *io_cache; + bool print_error; +} READ_RECORD; + +enum timestamp_type { TIMESTAMP_NONE, TIMESTAMP_DATE, TIMESTAMP_FULL, + TIMESTAMP_TIME }; + +typedef struct st_time { + uint year,month,day,hour,minute,second,second_part; + bool neg; + timestamp_type time_type; +} TIME; + +typedef struct { + long year,month,day,hour,minute,second,second_part; + bool neg; +} INTERVAL; + + +enum SHOW_TYPE { SHOW_LONG,SHOW_CHAR,SHOW_INT,SHOW_CHAR_PTR,SHOW_BOOL, + SHOW_MY_BOOL,SHOW_OPENTABLES,SHOW_STARTTIME,SHOW_QUESTION, + SHOW_LONG_CONST, SHOW_INT_CONST}; + +struct show_var_st { + const char *name; + char *value; + SHOW_TYPE type; +}; + +typedef struct lex_string { + char *str; + uint length; +} LEX_STRING; + +typedef struct st_lex_user { + LEX_STRING user, host, password; +} LEX_USER; + + /* Bits in form->update */ +#define REG_MAKE_DUPP 1 /* Make a copy of record when read */ +#define REG_NEW_RECORD 2 /* Write a new record if not found */ +#define REG_UPDATE 4 /* Uppdate record */ +#define REG_DELETE 8 /* Delete found record */ +#define REG_PROG 16 /* User is updateing database */ +#define REG_CLEAR_AFTER_WRITE 32 +#define REG_MAY_BE_UPDATED 64 +#define REG_AUTO_UPDATE 64 /* Used in D-forms for scroll-tables */ +#define REG_OVERWRITE 128 +#define REG_SKIPP_DUPP 256 + + /* Bits in form->status */ +#define STATUS_NO_RECORD (1+2) /* Record isn't usably */ +#define STATUS_GARBAGE 1 +#define STATUS_NOT_FOUND 2 /* No record in database when neaded */ +#define STATUS_NO_PARENT 4 /* Parent record wasn't found */ +#define STATUS_NOT_READ 8 /* Record isn't read */ +#define STATUS_UPDATED 16 /* Record is updated by formula */ |