This ChangeSet adds RTREE support into myisam library.

RTREEs will be used for GIS extension in MySQL


myisam/.cvsignore:
  Added sp_test and rt_test
myisam/Makefile.am:
  Added RTREE files
myisam/mi_create.c:
  Added RTREE/SPATIAL initialization
myisam/mi_delete.c:
  Switched to use virual function, instead of mi_ck_delete() direct call
myisam/mi_key.c:
  Added sp_make_key() call in the case of SPATIAL index type
myisam/mi_open.c:
  Added some new initialization actions which depend on key_alg being used: RTREE or BTREE
myisam/mi_range.c:
  Rtree estimation
myisam/mi_rkey.c:
  rtree
myisam/mi_rnext.c:
  rtree
myisam/mi_rnext_same.c:
  rtree
myisam/mi_static.c:
  New search flags for bounding rectungles
myisam/mi_test1.c:
  one now should always specify key_alg during keyinfo initializing: BTREE or RTREE
myisam/mi_test2.c:
  Added key_alg initializing
myisam/mi_test3.c:
  Added key_alg initialization
myisam/mi_update.c:
  Switched to virtual functions, instead of mi_ck_delete/mi_ck_write direct call
myisam/mi_write.c:
  Virtual function instead of mi_ck_write() direct call
myisam/myisamdef.h:
  Rtree additions

1 files changed, 33 insertions, 0 deletions

diff --git a/myisam/rt_mbr.h b/myisam/rt_mbr.h
new file mode 100644
index 00000000000..87af3b06c2e
--- /dev/null
+++ b/myisam/rt_mbr.h
@@ -0,0 +1,33 @@
+/* Copyright (C) 2000 MySQL AB & Ramil Kalimullin & 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 */
+
+#ifndef _rt_mbr_h
+#define _rt_mbr_h
+
+int rtree_key_cmp(MI_KEYSEG *keyseg, uchar *a, uchar *b, uint key_length,
+                  uint nextflag);
+int rtree_combine_rect(MI_KEYSEG *keyseg,uchar *, uchar *, uchar*, 
+                       uint key_length);
+double rtree_rect_volume(MI_KEYSEG *keyseg, uchar*, uint key_length);
+int rtree_d_mbr(MI_KEYSEG *keyseg, uchar *a, uint key_length, double *res);
+double rtree_overlapping_area(MI_KEYSEG *keyseg, uchar *a, uchar *b, 
+                              uint key_length);
+double rtree_area_increase(MI_KEYSEG *keyseg, uchar *a, uchar *b, 
+                           uint key_length, double *ab_area);
+int rtree_page_mbr(MI_INFO *info, MI_KEYSEG *keyseg, uchar *page_buf, 
+                   uchar* c, uint key_length);
+#endif /* _rt_mbr_h */