hp_rkey.c
上传用户:tsgydb
上传日期:2007-04-14
资源大小:10674k
文件大小:2k
- /* 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 */
- #include "heapdef.h"
- int heap_rkey(HP_INFO *info, byte *record, int inx, const byte *key)
- {
- byte *pos;
- HP_SHARE *share=info->s;
- DBUG_ENTER("hp_rkey");
- DBUG_PRINT("enter",("base: %lx inx: %d",info,inx));
- if ((uint) inx >= share->keys)
- {
- DBUG_RETURN(my_errno=HA_ERR_WRONG_INDEX);
- }
- info->lastinx=inx;
- info->current_record = (ulong) ~0L; /* For heap_rrnd() */
- if (!(pos=_hp_search(info,share->keydef+inx,key,0)))
- {
- info->update=0;
- DBUG_RETURN(my_errno);
- }
- memcpy(record,pos,(size_t) share->reclength);
- info->update=HA_STATE_AKTIV;
- if (!(share->keydef[inx].flag & HA_NOSAME))
- memcpy(info->lastkey,key,(size_t) share->keydef[inx].length);
- DBUG_RETURN(0);
- }
- /* Quick find of record */
- gptr heap_find(HP_INFO *info, int inx, const byte *key)
- {
- return _hp_search(info,info->s->keydef+inx,key,0);
- }