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Extend r-tree operator classes to handle Y-direction tests equivalent

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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.
This commit is contained in:
Tom Lane
2005-06-24 20:53:34 +00:00
parent 39f3c5d385
commit b90f8f20f0
17 changed files with 396 additions and 101 deletions
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10
contrib/rtree_gist/rtree_gist.sql.in
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@ -27,7 +27,7 @@ LANGUAGE 'C';
CREATE FUNCTION gbox_penalty(internal,internal,internal)
RETURNS internal
AS 'MODULE_PATHNAME'
LANGUAGE 'C' with (isstrict);
LANGUAGE 'C' STRICT;
CREATE FUNCTION gbox_picksplit(internal, internal)
RETURNS internal
@ -56,6 +56,10 @@ AS
OPERATOR 6 ~= ,
OPERATOR 7 ~ ,
OPERATOR 8 @ ,
OPERATOR 9 &<| ,
OPERATOR 10 <<| ,
OPERATOR 11 |>> ,
OPERATOR 12 |&> ,
FUNCTION 1 gbox_consistent (internal, box, int4),
FUNCTION 2 gbox_union (internal, internal),
FUNCTION 3 gbox_compress (internal),
@ -95,6 +99,10 @@ AS
OPERATOR 6 ~= RECHECK,
OPERATOR 7 ~ RECHECK,
OPERATOR 8 @ RECHECK,
OPERATOR 9 &<| RECHECK,
OPERATOR 10 <<| RECHECK,
OPERATOR 11 |>> RECHECK,
OPERATOR 12 |&> RECHECK,
FUNCTION 1 gpoly_consistent (internal, polygon, int4),
FUNCTION 2 gbox_union (internal, internal),
FUNCTION 3 gpoly_compress (internal),