Added support for NO_RECORD record format (don't store any row data) for Aria.

This makes the keys smaller (no row pointer) and gives us proper errors if we
use the table wrongly.

sql/sql_select.cc:
  Use NO_RECORD for tables that doesn't need row data.
storage/maria/Makefile.am:
  Added ma_norec.c
storage/maria/ma_check.c:
  Added support for NO_RECORD record format (don't store any row data)
storage/maria/ma_norec.c:
  Added support for NO_RECORD record format
storage/maria/ma_open.c:
  Added support for NO_RECORD record format
storage/maria/ma_search.c:
  Added support for 0 size row pointers (used with NO_RECORD)
storage/maria/ma_test1.c:
  Added testing of NO_RECORD record format.
storage/maria/maria_chk.c:
  Added support for NO_RECORD
storage/maria/maria_def.h:
  Added support for NO_RECORD
storage/maria/unittest/ma_test_all-t:
  Added testing of NO_RECORD record format

1 files changed, 66 insertions, 0 deletions

diff --git a/storage/maria/ma_norec.c b/storage/maria/ma_norec.c
new file mode 100644
index 00000000000..6d4f37e34fd
--- /dev/null
+++ b/storage/maria/ma_norec.c
@@ -0,0 +1,66 @@
+/* Copyright (C) 2010 Monty Program 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 */
+
+/*
+  Functions to handle tables with no row data (only index)
+  This is useful when you just want to do key reads or want to use
+  the index to check against duplicates.
+*/
+
+#include "maria_def.h"
+
+my_bool _ma_write_no_record(MARIA_HA *info __attribute__((unused)),
+                            const uchar *record __attribute__((unused)))
+{
+  return 0;
+}
+
+my_bool _ma_update_no_record(MARIA_HA *info __attribute__((unused)),
+                             MARIA_RECORD_POS pos __attribute__((unused)),
+                             const uchar *oldrec __attribute__((unused)),
+                             const uchar *record __attribute__((unused)))
+{
+  return HA_ERR_WRONG_COMMAND;
+}
+
+
+my_bool _ma_delete_no_record(MARIA_HA *info __attribute__((unused)),
+                             const uchar *record __attribute__((unused)))
+{
+  return HA_ERR_WRONG_COMMAND;
+}
+
+
+int _ma_read_no_record(MARIA_HA *info  __attribute__((unused)),
+                       uchar *record  __attribute__((unused)),
+                       MARIA_RECORD_POS pos __attribute__((unused)))
+{
+  return HA_ERR_WRONG_COMMAND;
+}
+
+
+int _ma_read_rnd_no_record(MARIA_HA *info __attribute__((unused)),
+                           uchar *buf  __attribute__((unused)),
+                           MARIA_RECORD_POS filepos __attribute__((unused)),
+                           my_bool skip_deleted_blocks __attribute__((unused)))
+{
+  return HA_ERR_WRONG_COMMAND;
+}
+
+my_off_t _ma_no_keypos_to_recpos(MARIA_SHARE *share __attribute__ ((unused)),
+                                 my_off_t pos __attribute__ ((unused)))
+{
+  return 0;
+}