release/src/router/mysql/storage/myisam/rt_index.h

   1 /* Copyright (c) 2002, 2004-2006 MySQL AB
   2
   3    This program is free software; you can redistribute it and/or modify
   4    it under the terms of the GNU General Public License as published by
   5    the Free Software Foundation; version 2 of the License.
   6
   7    This program is distributed in the hope that it will be useful,
   8    but WITHOUT ANY WARRANTY; without even the implied warranty of
   9    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10    GNU General Public License for more details.
  11
  12    You should have received a copy of the GNU General Public License
  13    along with this program; if not, write to the Free Software
  14    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA */
  15
  16 #ifndef _rt_index_h
  17 #define _rt_index_h
  18
  19 #ifdef HAVE_RTREE_KEYS
  20
  21 #define rt_PAGE_FIRST_KEY(page, nod_flag) (page + 2 + nod_flag)
  22 #define rt_PAGE_NEXT_KEY(key, key_length, nod_flag) (key + key_length + \
  23               (nod_flag ? nod_flag : info->s->base.rec_reflength))
  24 #define rt_PAGE_END(page) (page + mi_getint(page))
  25
  26 #define rt_PAGE_MIN_SIZE(block_length) ((uint)(block_length) / 3)
  27
  28 int rtree_insert(MI_INFO *info, uint keynr, uchar *key, uint key_length);
  29 int rtree_delete(MI_INFO *info, uint keynr, uchar *key, uint key_length);
  30
  31 int rtree_find_first(MI_INFO *info, uint keynr, uchar *key, uint key_length,
  32                     uint search_flag);
  33 int rtree_find_next(MI_INFO *info, uint keynr, uint search_flag);
  34
  35 int rtree_get_first(MI_INFO *info, uint keynr, uint key_length);
  36 int rtree_get_next(MI_INFO *info, uint keynr, uint key_length);
  37
  38 ha_rows rtree_estimate(MI_INFO *info, uint keynr, uchar *key,
  39                        uint key_length, uint flag);
  40
  41 int rtree_split_page(MI_INFO *info, MI_KEYDEF *keyinfo, uchar *page, uchar *key,
  42                     uint key_length, my_off_t *new_page_offs);
  43
  44 #endif /*HAVE_RTREE_KEYS*/
  45 #endif /* _rt_index_h */