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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2005-06-24 20:53:34 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2005-06-24 20:53:34 +0000 |
| commit | b90f8f20f035c3313f8a284346b5a1d155cfd2f0 (patch) | |
| tree | 68ea92accca0015cc6d16c22f860c6c8167a82b6 /src/include/access | |
| parent | 39f3c5d3850f7c50d363e8984280784251317e8b (diff) | |
| download | postgresql-b90f8f20f035c3313f8a284346b5a1d155cfd2f0.tar.gz | |
Extend r-tree operator classes to handle Y-direction tests equivalent
to the existing X-direction tests. An rtree class now includes 4 actual
2-D tests, 4 1-D X-direction tests, and 4 1-D Y-direction tests.
This involved adding four new Y-direction test operators for each of
box and polygon; I followed the PostGIS project's lead as to the names
of these operators.
NON BACKWARDS COMPATIBLE CHANGE: the poly_overleft (&<) and poly_overright
(&>) operators now have semantics comparable to box_overleft and box_overright.
This is necessary to make r-tree indexes work correctly on polygons.
Also, I changed circle_left and circle_right to agree with box_left and
box_right --- formerly they allowed the boundaries to touch. This isn't
actually essential given the lack of any r-tree opclass for circles, but
it seems best to sync all the definitions while we are at it.
Diffstat (limited to 'src/include/access')
| -rw-r--r-- | src/include/access/rtree.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/src/include/access/rtree.h b/src/include/access/rtree.h index 744f116fe3..d5aa103af7 100644 --- a/src/include/access/rtree.h +++ b/src/include/access/rtree.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/access/rtree.h,v 1.40 2005/06/24 00:18:52 tgl Exp $ + * $PostgreSQL: pgsql/src/include/access/rtree.h,v 1.41 2005/06/24 20:53:31 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -21,7 +21,7 @@ #include "utils/rel.h" /* see rtstrat.c for what all this is about */ -#define RTNStrategies 8 +#define RTNStrategies 12 #define RTLeftStrategyNumber 1 #define RTOverLeftStrategyNumber 2 #define RTOverlapStrategyNumber 3 @@ -30,6 +30,10 @@ #define RTSameStrategyNumber 6 #define RTContainsStrategyNumber 7 #define RTContainedByStrategyNumber 8 +#define RTOverBelowStrategyNumber 9 +#define RTBelowStrategyNumber 10 +#define RTAboveStrategyNumber 11 +#define RTOverAboveStrategyNumber 12 #define RTNProcs 3 #define RT_UNION_PROC 1 |