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/* Copyright (C) 2000-2002 MySQL 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; 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#include "heap_priv.h"
#include <string.h>
/* Read first record with the current key */
using namespace drizzled;
int heap_rlast(HP_INFO *info, unsigned char *record, int inx)
{
HP_SHARE *share= info->s;
HP_KEYDEF *keyinfo= share->keydef + inx;
info->lastinx= inx;
if (keyinfo->algorithm == HA_KEY_ALG_BTREE)
{
unsigned char *pos;
if ((pos = (unsigned char *)tree_search_edge(&keyinfo->rb_tree,
info->parents,
&info->last_pos,
offsetof(TREE_ELEMENT, right))))
{
memcpy(&pos, pos + (*keyinfo->get_key_length)(keyinfo, pos),
sizeof(unsigned char*));
info->current_ptr = pos;
hp_extract_record(share, record, pos);
info->update = HA_STATE_AKTIV;
}
else
{
errno = HA_ERR_END_OF_FILE;
return(errno);
}
return(0);
}
else
{
info->current_ptr=0;
info->current_hash_ptr=0;
info->update=HA_STATE_NEXT_FOUND;
return(heap_rprev(info,record));
}
}
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