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-rw-r--r--storage/maria/ma_rrnd.c46
1 files changed, 46 insertions, 0 deletions
diff --git a/storage/maria/ma_rrnd.c b/storage/maria/ma_rrnd.c
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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 */
+
+/* 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, uchar *buf, MARIA_RECORD_POS filepos)
+{
+ int ret;
+ DBUG_ENTER("maria_rrnd");
+
+ DBUG_ASSERT(filepos != HA_OFFSET_ERROR);
+
+ /* 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);
+
+ info->cur_row.lastpos= filepos; /* Remember for update */
+ ret= (*info->s->read_record)(info, buf, filepos);
+ DBUG_RETURN(ret);
+}