diff options
Diffstat (limited to 'isam/rprev.c')
| -rw-r--r-- | isam/rprev.c | 64 |
1 files changed, 0 insertions, 64 deletions
diff --git a/isam/rprev.c b/isam/rprev.c deleted file mode 100644 index 0997a04fbbe..00000000000 --- a/isam/rprev.c +++ /dev/null @@ -1,64 +0,0 @@ -/* 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 f|reg}ende post med samma isam-nyckel */ - -#include "isamdef.h" - - /* - L{ser f|reg}ende post med samma isamnyckel som f|reg}ende l{sning. - Man kan ha gjort write, update eller delete p} f|reg}ende post. - OBS! [ven om man {ndrade isamnyckeln p} f|reg}ende post l{ses - posten i avseende p} f|reg}ende isam-nyckel-l{sning !! - */ - -int nisam_rprev(N_INFO *info, byte *buf, int inx) -{ - int error,changed; - register uint flag; - DBUG_ENTER("nisam_rprev"); - - if ((inx = _nisam_check_index(info,inx)) < 0) - DBUG_RETURN(-1); - flag=SEARCH_SMALLER; /* Read previous */ - if (info->lastpos == NI_POS_ERROR && info->update & HA_STATE_NEXT_FOUND) - flag=0; /* Read last */ - -#ifndef NO_LOCKING - if (_nisam_readinfo(info,F_RDLCK,1)) DBUG_RETURN(-1); -#endif - changed=_nisam_test_if_changed(info); - if (!flag) - error=_nisam_search_last(info,info->s->keyinfo+inx,info->s->state.key_root[inx]); - else if (!changed) - error=_nisam_search_next(info,info->s->keyinfo+inx,info->lastkey,flag, - info->s->state.key_root[inx]); - else - error=_nisam_search(info,info->s->keyinfo+inx,info->lastkey,0,flag, - info->s->state.key_root[inx]); - - info->update&= (HA_STATE_CHANGED | HA_STATE_ROW_CHANGED | - HA_STATE_BUFF_SAVED); - info->update|= HA_STATE_PREV_FOUND; - if (error && my_errno == HA_ERR_KEY_NOT_FOUND) - my_errno=HA_ERR_END_OF_FILE; - if ((*info->read_record)(info,info->lastpos,buf) >=0) - { - info->update|= HA_STATE_AKTIV; /* Record is read */ - DBUG_RETURN(0); - } - DBUG_RETURN(-1); -} /* nisam_rprev */ |