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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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6
sql/sql_handler.cc
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@ -515,7 +515,8 @@ bool mysql_ha_read(THD *thd, TABLE_LIST *tables,
}
List_iterator<Item> it_ke(*key_expr);
Item *item;
for (key_len=0 ; (item=it_ke++) ; key_part++)
ulonglong keypart_map;
for (keypart_map= key_len=0 ; (item=it_ke++) ; key_part++)
{
my_bitmap_map *old_map;
// 'item' can be changed by fix_fields() call
@ -532,6 +533,7 @@ bool mysql_ha_read(THD *thd, TABLE_LIST *tables,
(void) item->save_in_field(key_part->field, 1);
dbug_tmp_restore_column_map(table->write_set, old_map);
key_len+=key_part->store_length;
keypart_map= (keypart_map << 1) | 1;
}
if (!(key= (byte*) thd->calloc(ALIGN_SIZE(key_len))))
@ -540,7 +542,7 @@ bool mysql_ha_read(THD *thd, TABLE_LIST *tables,
table->file->ha_index_init(keyno, 1);
key_copy(key, table->record[0], table->key_info + keyno, key_len);
error= table->file->index_read(table->record[0],
key,key_len,ha_rkey_mode);
key, keypart_map, ha_rkey_mode);
mode=rkey_to_rnext[(int)ha_rkey_mode];
break;
}