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/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult 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; either version 2 of the License, or
(at your option) any later version.
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 */
/* L{ser nuvarande record med direktl{sning */
/* Klarar b}de poster l{sta med nyckel och rrnd. */
#include "isamdef.h"
/* Funktionen ger som resultat:
0 = Ok.
1 = Posten borttagen
-1 = EOF (eller motsvarande: se errno) */
int nisam_rsame(N_INFO *info, byte *record, int inx)
/* If inx >= 0 find record using key */
{
DBUG_ENTER("nisam_rsame");
if (inx >= (int) info->s->state.keys || inx < -1)
{
my_errno=HA_ERR_WRONG_INDEX;
DBUG_RETURN(-1);
}
if (info->lastpos == NI_POS_ERROR || info->update & HA_STATE_DELETED)
{
my_errno=HA_ERR_KEY_NOT_FOUND; /* No current record */
DBUG_RETURN(-1);
}
info->update&= (HA_STATE_CHANGED | HA_STATE_ROW_CHANGED);
/* L{s record fr}n datafilen */
#ifndef NO_LOCKING
if (_nisam_readinfo(info,F_RDLCK,1))
DBUG_RETURN(-1);
#endif
if (inx >= 0)
{
info->lastinx=inx;
VOID(_nisam_make_key(info,(uint) inx,info->lastkey,record,info->lastpos));
VOID(_nisam_search(info,info->s->keyinfo+inx,info->lastkey,0,SEARCH_SAME,
info->s->state.key_root[inx]));
}
if ((*info->read_record)(info,info->lastpos,record) == 0)
DBUG_RETURN(0);
if (my_errno == HA_ERR_RECORD_DELETED)
{
my_errno=HA_ERR_KEY_NOT_FOUND;
DBUG_RETURN(1);
}
DBUG_RETURN(-1);
} /* nisam_rsame */
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