mirror of
https://github.com/MariaDB/server.git
synced 2025-01-17 20:42:30 +01:00
0d01dd200f
Added key and file version numbers to MEMORY tables so that we can detect if someone has changed them between HANDLER calls. mysql-test/suite/handler/aria.result: Fixed result after test changes mysql-test/suite/handler/handler.inc: Changed test to use combined key to ensure rows are returned in a pre-determinated order. mysql-test/suite/handler/heap.result: New result mysql-test/suite/handler/heap.test: Added test for HANDLER + HEAP mysql-test/suite/handler/innodb.result: Fixed result after test changes mysql-test/suite/handler/myisam.result: Fixed result after test changes sql/sql_handler.cc: Fixed wrong parameter to ha_index_next_same() storage/heap/ha_heap.cc: Abort key scan if table has changed. Abort table scan if table has been recreated. storage/heap/ha_heap.h: Added support for HANDLER storage/heap/hp_clear.c: Increase version number so that we can notice changes if using HANDLER storage/heap/hp_delete.c: Increase key data version number on key changes. storage/heap/hp_rfirst.c: Remember version of key data Give error if using read-first on hash key. storage/heap/hp_rkey.c: Remember version of key data storage/heap/hp_rlast.c: Remember version of key data Give error if using read-last on hash key. storage/heap/hp_rnext.c: Fixed that we get next key from last search. storage/heap/hp_rprev.c: Fixed that we get previous key from last search. storage/heap/hp_scan.c: Remember version of key and file data storage/heap/hp_update.c: Increase key data version number on key changes. storage/heap/hp_write.c: Increase key data version number on key changes.
55 lines
1.7 KiB
C
55 lines
1.7 KiB
C
/* Copyright (C) 2000-2002 MySQL 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; version 2 of the License.
|
|
|
|
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 */
|
|
|
|
#include "heapdef.h"
|
|
|
|
/* Read first record with the current key */
|
|
|
|
|
|
int heap_rlast(HP_INFO *info, uchar *record, int inx)
|
|
{
|
|
HP_SHARE *share= info->s;
|
|
HP_KEYDEF *keyinfo= share->keydef + inx;
|
|
|
|
DBUG_ENTER("heap_rlast");
|
|
info->lastinx= inx;
|
|
info->key_version= info->s->key_version;
|
|
if (keyinfo->algorithm == HA_KEY_ALG_BTREE)
|
|
{
|
|
uchar *pos;
|
|
|
|
if ((pos = tree_search_edge(&keyinfo->rb_tree, info->parents,
|
|
&info->last_pos, offsetof(TREE_ELEMENT, right))))
|
|
{
|
|
memcpy(&pos, pos + (*keyinfo->get_key_length)(keyinfo, pos),
|
|
sizeof(uchar*));
|
|
info->current_ptr = pos;
|
|
memcpy(record, pos, (size_t)share->reclength);
|
|
info->update = HA_STATE_AKTIV;
|
|
}
|
|
else
|
|
{
|
|
my_errno = HA_ERR_END_OF_FILE;
|
|
DBUG_RETURN(my_errno);
|
|
}
|
|
DBUG_RETURN(0);
|
|
}
|
|
else
|
|
{
|
|
/* We can't scan a non existing key value with hash index */
|
|
my_errno= HA_ERR_WRONG_COMMAND;
|
|
DBUG_RETURN(my_errno);
|
|
}
|
|
}
|