mirror of
https://github.com/MariaDB/server.git
synced 2025-11-03 20:36:16 +01:00
58 lines
1.9 KiB
C
58 lines
1.9 KiB
C
/* Copyright (c) 2000, 2001, 2005-2007 MySQL AB
|
|
Use is subject to license terms
|
|
|
|
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */
|
|
|
|
/* read record through position and fix key-position */
|
|
/* As mi_rsame but supply a position */
|
|
|
|
#include "myisamdef.h"
|
|
|
|
|
|
/*
|
|
** If inx >= 0 update index pointer
|
|
** Returns one of the following values:
|
|
** 0 = Ok.
|
|
** HA_ERR_KEY_NOT_FOUND = Row is deleted
|
|
** HA_ERR_END_OF_FILE = End of file
|
|
*/
|
|
|
|
int mi_rsame_with_pos(MI_INFO *info, uchar *record, int inx, my_off_t filepos)
|
|
{
|
|
DBUG_ENTER("mi_rsame_with_pos");
|
|
DBUG_PRINT("enter",("index: %d filepos: %ld", inx, (long) filepos));
|
|
|
|
if (inx < -1 ||
|
|
(inx >= 0 && ! mi_is_key_active(info->s->state.key_map, inx)))
|
|
{
|
|
DBUG_RETURN(my_errno=HA_ERR_WRONG_INDEX);
|
|
}
|
|
|
|
info->update&= (HA_STATE_CHANGED | HA_STATE_ROW_CHANGED);
|
|
if ((*info->s->read_rnd)(info,record,filepos,0))
|
|
{
|
|
if (my_errno == HA_ERR_RECORD_DELETED)
|
|
my_errno=HA_ERR_KEY_NOT_FOUND;
|
|
DBUG_RETURN(my_errno);
|
|
}
|
|
info->lastpos=filepos;
|
|
info->lastinx=inx;
|
|
if (inx >= 0)
|
|
{
|
|
info->lastkey_length=_mi_make_key(info,(uint) inx,info->lastkey,record,
|
|
info->lastpos);
|
|
info->update|=HA_STATE_KEY_CHANGED; /* Don't use indexposition */
|
|
}
|
|
DBUG_RETURN(0);
|
|
} /* mi_rsame_pos */
|