Drizzled Public API Documentation

mi_rsame.cc
1 /* Copyright (C) 2000-2001, 2005 MySQL AB
2 
3  This program is free software; you can redistribute it and/or modify
4  it under the terms of the GNU General Public License as published by
5  the Free Software Foundation; version 2 of the License.
6 
7  This program is distributed in the hope that it will be useful,
8  but WITHOUT ANY WARRANTY; without even the implied warranty of
9  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10  GNU General Public License for more details.
11 
12  You should have received a copy of the GNU General Public License
13  along with this program; if not, write to the Free Software
14  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
15 
16 #include "myisam_priv.h"
17 #include <drizzled/util/test.h>
18 
19 using namespace drizzled;
20 
21  /*
22  ** Find current row with read on position or read on key
23  ** If inx >= 0 find record using key
24  ** Return values:
25  ** 0 = Ok.
26  ** HA_ERR_KEY_NOT_FOUND = Row is deleted
27  ** HA_ERR_END_OF_FILE = End of file
28  */
29 
30 
31 int mi_rsame(MI_INFO *info, unsigned char *record, int inx)
32 {
33  if (inx != -1 && ! mi_is_key_active(info->s->state.key_map, inx))
34  {
35  return(errno=HA_ERR_WRONG_INDEX);
36  }
37  if (info->lastpos == HA_OFFSET_ERROR || info->update & HA_STATE_DELETED)
38  {
39  return(errno=HA_ERR_KEY_NOT_FOUND); /* No current record */
40  }
41  info->update&= (HA_STATE_CHANGED | HA_STATE_ROW_CHANGED);
42 
43  /* Read row from data file */
44  if (fast_mi_readinfo(info))
45  return(errno);
46 
47  if (inx >= 0)
48  {
49  info->lastinx=inx;
50  info->lastkey_length=_mi_make_key(info,(uint) inx,info->lastkey,record,
51  info->lastpos);
52  _mi_search(info,info->s->keyinfo+inx,info->lastkey, USE_WHOLE_KEY,
53  SEARCH_SAME,
54  info->s->state.key_root[inx]);
55  }
56 
57  if (!(*info->read_record)(info,info->lastpos,record))
58  return(0);
59  if (errno == HA_ERR_RECORD_DELETED)
60  errno=HA_ERR_KEY_NOT_FOUND;
61  return(errno);
62 } /* mi_rsame */
TODO: Rename this file - func.h is stupid.