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/* Copyright (C) 2006 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; 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */
#include "maria_def.h"
/**
Find current row with read on position or read on key
@notes
If inx >= 0 find record using key else re-read row on last position
@warning
This function is not row version safe.
This is not crtical as this function is not used by MySQL
@return
@retval 0 Ok
@retval HA_ERR_KEY_NOT_FOUND Row is deleted
@retval HA_ERR_END_OF_FILE End of file
@retval HA_ERR_WRONG_INDEX Wrong inx argument
*/
int maria_rsame(MARIA_HA *info, uchar *record, int inx)
{
DBUG_ENTER("maria_rsame");
if (inx >= 0 && _ma_check_index(info, inx) < 0)
{
DBUG_PRINT("error", ("wrong index usage"));
DBUG_RETURN(my_errno);
}
if (info->cur_row.lastpos == HA_OFFSET_ERROR ||
info->update & HA_STATE_DELETED)
{
DBUG_PRINT("error", ("no current record"));
DBUG_RETURN(my_errno=HA_ERR_KEY_NOT_FOUND); /* No current record */
}
info->update&= (HA_STATE_CHANGED | HA_STATE_ROW_CHANGED);
/* Read row from data file */
if (fast_ma_readinfo(info))
DBUG_RETURN(my_errno);
if (inx >= 0)
{
MARIA_KEYDEF *keyinfo= info->last_key.keyinfo;
(*keyinfo->make_key)(info, &info->last_key, (uint) inx,
info->lastkey_buff, record,
info->cur_row.lastpos,
info->cur_row.trid);
if (info->s->lock_key_trees)
mysql_rwlock_rdlock(&keyinfo->root_lock);
_ma_search(info, &info->last_key, SEARCH_SAME,
info->s->state.key_root[inx]);
if (info->s->lock_key_trees)
mysql_rwlock_unlock(&keyinfo->root_lock);
}
if (!(*info->read_record)(info, record, info->cur_row.lastpos))
DBUG_RETURN(0);
if (my_errno == HA_ERR_RECORD_DELETED)
my_errno=HA_ERR_KEY_NOT_FOUND;
DBUG_PRINT("error", ("my_errno: %d", my_errno));
DBUG_RETURN(my_errno);
} /* maria_rsame */
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