diff options
Diffstat (limited to 'storage/maria/ma_rrnd.c')
-rw-r--r-- | storage/maria/ma_rrnd.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/storage/maria/ma_rrnd.c b/storage/maria/ma_rrnd.c new file mode 100644 index 00000000000..33940d5f23f --- /dev/null +++ b/storage/maria/ma_rrnd.c @@ -0,0 +1,54 @@ +/* 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; 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 */ + +/* Read a record with random-access. The position to the record must + get by MARIA_HA. The next record can be read with pos= MARIA_POS_ERROR */ + + +#include "maria_def.h" + +/* + Read a row based on position. + + RETURN + 0 Ok. + HA_ERR_RECORD_DELETED Record is deleted. + HA_ERR_END_OF_FILE EOF. +*/ + +int maria_rrnd(MARIA_HA *info, byte *buf, MARIA_RECORD_POS filepos) +{ + DBUG_ENTER("maria_rrnd"); + + DBUG_ASSERT(filepos != HA_OFFSET_ERROR); +#ifdef NOT_USED + if (filepos == HA_OFFSET_ERROR) + { + skip_deleted_blocks=1; + if (info->cur_row.lastpos == HA_OFFSET_ERROR) /* First read ? */ + filepos= info->s->pack.header_length; /* Read first record */ + else + filepos= info->cur_row.nextpos; + } +#endif + + /* Init all but update-flag */ + info->update&= (HA_STATE_CHANGED | HA_STATE_ROW_CHANGED); + if (info->opt_flag & WRITE_CACHE_USED && flush_io_cache(&info->rec_cache)) + DBUG_RETURN(my_errno); + + DBUG_RETURN((*info->s->read_record)(info, buf, filepos)); +} |