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WL#3700: Handler API change: all index search methods - that is,

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index_read(), index_read_idx(), index_read_last(), and
records_in_range() - instead of 'uint keylen' argument take
'ulonglong keypart_map', a bitmap showing which keyparts are
present in the key value.
Fallback method is provided for handlers that are lagging behind.
This commit is contained in:
unknown 2007-01-29 10:40:26 +01:00
commit 4e8b49d656
58 changed files with 483 additions and 441 deletions
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13
storage/heap/ha_heap.cc
View file

@ -238,34 +238,35 @@ int ha_heap::delete_row(const byte * buf)
return res;
}
int ha_heap::index_read(byte * buf, const byte * key, uint key_len,
int ha_heap::index_read(byte * buf, const byte * key, ulonglong keypart_map,
enum ha_rkey_function find_flag)
{
DBUG_ASSERT(inited==INDEX);
statistic_increment(table->in_use->status_var.ha_read_key_count,
&LOCK_status);
int error = heap_rkey(file,buf,active_index, key, key_len, find_flag);
int error = heap_rkey(file,buf,active_index, key, keypart_map, find_flag);
table->status = error ? STATUS_NOT_FOUND : 0;
return error;
}
int ha_heap::index_read_last(byte *buf, const byte *key, uint key_len)
int ha_heap::index_read_last(byte *buf, const byte *key, ulonglong keypart_map)
{
DBUG_ASSERT(inited==INDEX);
statistic_increment(table->in_use->status_var.ha_read_key_count,
&LOCK_status);
int error= heap_rkey(file, buf, active_index, key, key_len,
int error= heap_rkey(file, buf, active_index, key, keypart_map,
HA_READ_PREFIX_LAST);
table->status= error ? STATUS_NOT_FOUND : 0;
return error;
}
int ha_heap::index_read_idx(byte * buf, uint index, const byte * key,
uint key_len, enum ha_rkey_function find_flag)
ulonglong keypart_map,
enum ha_rkey_function find_flag)
{
statistic_increment(table->in_use->status_var.ha_read_key_count,
&LOCK_status);
int error = heap_rkey(file, buf, index, key, key_len, find_flag);
int error = heap_rkey(file, buf, index, key, keypart_map, find_flag);
table->status = error ? STATUS_NOT_FOUND : 0;
return error;
}

10
storage/heap/ha_heap.h
View file

@ -75,11 +75,11 @@ public:
ulonglong nb_desired_values,
ulonglong *first_value,
ulonglong *nb_reserved_values);
int index_read(byte * buf, const byte * key,
uint key_len, enum ha_rkey_function find_flag);
int index_read_idx(byte * buf, uint idx, const byte * key,
uint key_len, enum ha_rkey_function find_flag);
int index_read_last(byte * buf, const byte * key, uint key_len);
int index_read(byte * buf, const byte * key, ulonglong keypart_map,
enum ha_rkey_function find_flag);
int index_read_last(byte *buf, const byte *key, ulonglong keypart_map);
int index_read_idx(byte * buf, uint index, const byte * key,
ulonglong keypart_map, enum ha_rkey_function find_flag);
int index_next(byte * buf);
int index_prev(byte * buf);
int index_first(byte * buf);

2
storage/heap/heapdef.h
View file

@ -100,7 +100,7 @@ extern int hp_close(register HP_INFO *info);
extern void hp_clear(HP_SHARE *info);
extern void hp_clear_keys(HP_SHARE *info);
extern uint hp_rb_pack_key(HP_KEYDEF *keydef, uchar *key, const uchar *old,
uint k_len);
ulonglong keypart_map);
#ifdef THREAD
extern pthread_mutex_t THR_LOCK_heap;
#else

12
storage/heap/hp_hash.c
View file

@ -784,30 +784,26 @@ uint hp_rb_make_key(HP_KEYDEF *keydef, byte *key,
uint hp_rb_pack_key(HP_KEYDEF *keydef, uchar *key, const uchar *old,
uint k_len)
ulonglong keypart_map)
{
HA_KEYSEG *seg, *endseg;
uchar *start_key= key;
for (seg= keydef->seg, endseg= seg + keydef->keysegs;
seg < endseg && (int) k_len > 0; old+= seg->length, seg++)
seg < endseg && keypart_map; old+= seg->length, seg++)
{
uint char_length;
keypart_map>>= 1;
if (seg->null_bit)
{
k_len--;
if (!(*key++= (char) 1 - *old++))
{
k_len-= seg->length;
continue;
}
}
if (seg->flag & HA_SWAP_KEY)
{
uint length= seg->length;
byte *pos= (byte*) old + length;
k_len-= length;
while (length--)
{
*key++= *--pos;
@ -822,7 +818,6 @@ uint hp_rb_pack_key(HP_KEYDEF *keydef, uchar *key, const uchar *old,
CHARSET_INFO *cs= seg->charset;
char_length= length/cs->mbmaxlen;
k_len-= 2+length;
old+= 2;
set_if_smaller(length,tmp_length); /* Safety */
FIX_LENGTH(cs, old, length, char_length);
@ -843,7 +838,6 @@ uint hp_rb_pack_key(HP_KEYDEF *keydef, uchar *key, const uchar *old,
}
memcpy(key, old, (size_t) char_length);
key+= seg->length;
k_len-= seg->length;
}
return (uint) (key - start_key);
}

4
storage/heap/hp_rkey.c
View file

@ -16,7 +16,7 @@
#include "heapdef.h"
int heap_rkey(HP_INFO *info, byte *record, int inx, const byte *key,
uint key_len, enum ha_rkey_function find_flag)
ulonglong keypart_map, enum ha_rkey_function find_flag)
{
byte *pos;
HP_SHARE *share= info->s;
@ -38,7 +38,7 @@ int heap_rkey(HP_INFO *info, byte *record, int inx, const byte *key,
custom_arg.keyseg= info->s->keydef[inx].seg;
custom_arg.key_length= info->lastkey_len=
hp_rb_pack_key(keyinfo, (uchar*) info->lastkey,
(uchar*) key, key_len);
(uchar*) key, keypart_map);
custom_arg.search_flag= SEARCH_FIND | SEARCH_SAME;
/* for next rkey() after deletion */
if (find_flag == HA_READ_AFTER_KEY)