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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
parent 6e1ba88418
commit 4e8b49d656
58 changed files with 483 additions and 441 deletions
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14
sql/key.cc
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@@ -29,6 +29,7 @@
field Field to search after
key_length On partial match, contains length of fields before
field
keypart key part # of a field
NOTES
Used when calculating key for NEXT_NUMBER
@@ -45,7 +46,7 @@
*/
int find_ref_key(KEY *key, uint key_count, byte *record, Field *field,
uint *key_length)
uint *key_length, uint *keypart)
{
reg2 int i;
reg3 KEY *key_info;
@@ -60,8 +61,8 @@ int find_ref_key(KEY *key, uint key_count, byte *record, Field *field,
{
if (key_info->key_part[0].offset == fieldpos)
{ /* Found key. Calc keylength */
*key_length=0;
return(i); /* Use this key */
*key_length= *keypart= 0;
return i; /* Use this key */
}
}
@@ -78,8 +79,11 @@ int find_ref_key(KEY *key, uint key_count, byte *record, Field *field,
j++, key_part++)
{
if (key_part->offset == fieldpos)
return(i); /* Use this key */
*key_length+=key_part->store_length;
{
*keypart= j;
return i; /* Use this key */
}
*key_length+= key_part->store_length;
}
}
return(-1); /* No key is ok */