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brian@brian-akers-computer.local
2004-05-22 12:16:49 -07:00
parent 00bd872d41
commit 9c84b9b691
2 changed files with 99 additions and 40 deletions
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74
sql/handler.h
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@ -1,4 +1,4 @@
/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
/* Copyright (C) 2000,2004 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
@ -28,7 +28,8 @@
#define NO_HASH /* Not yet implemented */
#endif
#if defined(HAVE_BERKELEY_DB) || defined(HAVE_INNOBASE_DB)
#if defined(HAVE_BERKELEY_DB) || defined(HAVE_INNOBASE_DB) || \
defined(HAVE_NDBCLUSTER_DB)
#define USING_TRANSACTIONS
#endif
@ -80,7 +81,6 @@
#define HA_FILE_BASED (1 << 26)
/* 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 */
@ -91,6 +91,13 @@
#define HA_KEY_READ_ONLY 64 /* Support HA_EXTRA_KEYREAD */
/* operations for disable/enable indexes */
#define HA_KEY_SWITCH_NONUNIQ 0
#define HA_KEY_SWITCH_ALL 1
#define HA_KEY_SWITCH_NONUNIQ_SAVE 2
#define HA_KEY_SWITCH_ALL_SAVE 3
/*
Bits in index_ddl_flags(KEY *wanted_index)
for what ddl you can do with index
@ -138,15 +145,23 @@
/* Table caching type */
#define HA_CACHE_TBL_NONTRANSACT 0
#define HA_CACHE_TBL_ASKTRANSACT 1
#define HA_CACHE_TBL_TRANSACT 2
#define HA_CACHE_TBL_NOCACHE 1
#define HA_CACHE_TBL_ASKTRANSACT 2
#define HA_CACHE_TBL_TRANSACT 4
enum db_type { DB_TYPE_UNKNOWN=0,DB_TYPE_DIAB_ISAM=1,
DB_TYPE_HASH,DB_TYPE_MISAM,DB_TYPE_PISAM,
DB_TYPE_RMS_ISAM, DB_TYPE_HEAP, DB_TYPE_ISAM,
DB_TYPE_MRG_ISAM, DB_TYPE_MYISAM, DB_TYPE_MRG_MYISAM,
DB_TYPE_BERKELEY_DB, DB_TYPE_INNODB, DB_TYPE_GEMINI,
DB_TYPE_EXAMPLE_DB, DB_TYPE_ARCHIVE_DB, DB_TYPE_DEFAULT };
enum db_type
{
DB_TYPE_UNKNOWN=0,DB_TYPE_DIAB_ISAM=1,
DB_TYPE_HASH,DB_TYPE_MISAM,DB_TYPE_PISAM,
DB_TYPE_RMS_ISAM, DB_TYPE_HEAP, DB_TYPE_ISAM,
DB_TYPE_MRG_ISAM, DB_TYPE_MYISAM, DB_TYPE_MRG_MYISAM,
DB_TYPE_BERKELEY_DB, DB_TYPE_INNODB,
DB_TYPE_GEMINI, DB_TYPE_NDBCLUSTER,
DB_TYPE_EXAMPLE_DB,
DB_TYPE_DEFAULT // Must be last
};
struct show_table_type_st {
const char *type;
@ -176,6 +191,7 @@ typedef struct st_thd_trans {
void *bdb_tid;
void *innobase_tid;
bool innodb_active_trans;
void *ndb_tid;
} THD_TRANS;
enum enum_tx_isolation { ISO_READ_UNCOMMITTED, ISO_READ_COMMITTED,
@ -218,14 +234,6 @@ typedef struct st_ha_check_opt
} HA_CHECK_OPT;
typedef struct st_key_range
{
const byte *key;
uint length;
enum ha_rkey_function flag;
} key_range;
class handler :public Sql_alloc
{
protected:
@ -252,6 +260,7 @@ public:
key_range save_end_range, *end_range;
KEY_PART_INFO *range_key_part;
int key_compare_result_on_equal;
bool eq_range;
uint errkey; /* Last dup key */
uint sortkey, key_used_on_scan;
@ -313,14 +322,15 @@ public:
{
return (my_errno=HA_ERR_WRONG_COMMAND);
}
virtual int handler::read_range_first(const key_range *start_key,
const key_range *end_key,
bool sorted);
virtual int handler::read_range_next(bool eq_range);
int handler::compare_key(key_range *range);
virtual int read_range_first(const key_range *start_key,
const key_range *end_key,
bool eq_range, bool sorted);
virtual int read_range_next();
int compare_key(key_range *range);
virtual int ft_init()
{ return -1; }
virtual FT_INFO *ft_init_ext(uint flags,uint inx,const byte *key, uint keylen)
virtual FT_INFO *ft_init_ext(uint flags,uint inx,const byte *key,
uint keylen)
{ return NULL; }
virtual int ft_read(byte *buf) { return -1; }
virtual int rnd_init(bool scan=1)=0;
@ -329,11 +339,8 @@ public:
virtual int rnd_pos(byte * buf, byte *pos)=0;
virtual int read_first_row(byte *buf, uint primary_key);
virtual int restart_rnd_next(byte *buf, byte *pos);
virtual ha_rows records_in_range(int inx,
const byte *start_key,uint start_key_len,
enum ha_rkey_function start_search_flag,
const byte *end_key,uint end_key_len,
enum ha_rkey_function end_search_flag)
virtual ha_rows records_in_range(uint inx, key_range *min_key,
key_range *max_key)
{ return (ha_rows) 10; }
virtual void position(const byte *record)=0;
virtual my_off_t row_position() { return HA_OFFSET_ERROR; }
@ -364,8 +371,9 @@ public:
*/
virtual int restore(THD* thd, HA_CHECK_OPT* check_opt);
virtual int dump(THD* thd, int fd = -1) { return ER_DUMP_NOT_IMPLEMENTED; }
virtual int disable_indexes(bool all, bool save) { return HA_ERR_WRONG_COMMAND; }
virtual int enable_indexes() { return HA_ERR_WRONG_COMMAND; }
virtual int disable_indexes(uint mode) { return HA_ERR_WRONG_COMMAND; }
virtual int enable_indexes(uint mode) { return HA_ERR_WRONG_COMMAND; }
virtual int indexes_are_disabled(void) {return 0;}
virtual void start_bulk_insert(ha_rows rows) {}
virtual int end_bulk_insert() {return 0; }
virtual int discard_or_import_tablespace(my_bool discard) {return -1;}
@ -479,3 +487,5 @@ bool ha_flush_logs(void);
int ha_recovery_logging(THD *thd, bool on);
int ha_change_key_cache(KEY_CACHE *old_key_cache,
KEY_CACHE *new_key_cache);
int ha_discover(const char* dbname, const char* name,
const void** frmblob, uint* frmlen);