~drizzle-trunk/drizzle/development

/* Copyright (C) 2000-2001, 2005 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 "myisamdef.h"

#include <drizzled/util/test.h>

	/*

	** Find current row with read on position or read on key

	** If inx >= 0 find record using key

	** Return values:

	** 0 = Ok.

	** HA_ERR_KEY_NOT_FOUND = Row is deleted

	** HA_ERR_END_OF_FILE   = End of file

	*/

int mi_rsame(MI_INFO *info, unsigned char *record, int inx)

{

  if (inx != -1 && ! mi_is_key_active(info->s->state.key_map, inx))

  {

    return(my_errno=HA_ERR_WRONG_INDEX);

  }

  if (info->lastpos == HA_OFFSET_ERROR || info->update & HA_STATE_DELETED)

  {

    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_mi_readinfo(info))

    return(my_errno);

  if (inx >= 0)

  {

    info->lastinx=inx;

    info->lastkey_length=_mi_make_key(info,(uint) inx,info->lastkey,record,

				      info->lastpos);

    if (info->s->concurrent_insert)

      pthread_rwlock_rdlock(&info->s->key_root_lock[inx]);

    _mi_search(info,info->s->keyinfo+inx,info->lastkey, USE_WHOLE_KEY,

               SEARCH_SAME,

               info->s->state.key_root[inx]);

    if (info->s->concurrent_insert)

      pthread_rwlock_unlock(&info->s->key_root_lock[inx]);

  }

  if (!(*info->read_record)(info,info->lastpos,record))

    return(0);

  if (my_errno == HA_ERR_RECORD_DELETED)

    my_errno=HA_ERR_KEY_NOT_FOUND;

  return(my_errno);

} /* mi_rsame */