Import changeset

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 */