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with OPAQUE, as per recent pghackers discussion. I still want to do some more work on the 'cstring' pseudo-type, but I'm going to commit the bulk of the changes now before the tree starts shifting under me ...
263 lines
6.6 KiB
MySQL
263 lines
6.6 KiB
MySQL
-- Create the user-defined type for 1-D floating point intervals (seg)
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--
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BEGIN TRANSACTION;
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-- Adjust this setting to control where the objects get created.
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SET search_path = public;
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CREATE FUNCTION seg_in(cstring)
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RETURNS seg
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AS 'MODULE_PATHNAME'
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LANGUAGE 'c';
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CREATE FUNCTION seg_out(seg)
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RETURNS cstring
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AS 'MODULE_PATHNAME'
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LANGUAGE 'c';
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CREATE TYPE seg (
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internallength = 12,
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input = seg_in,
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output = seg_out
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);
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COMMENT ON TYPE seg IS
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'floating point interval ''FLOAT .. FLOAT'', ''.. FLOAT'', ''FLOAT ..'' or ''FLOAT''';
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--
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-- External C-functions for R-tree methods
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--
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-- Left/Right methods
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CREATE FUNCTION seg_over_left(seg, seg) RETURNS bool
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AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
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COMMENT ON FUNCTION seg_over_left(seg, seg) IS
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'is over and left of';
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CREATE FUNCTION seg_over_right(seg, seg) RETURNS bool
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AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
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COMMENT ON FUNCTION seg_over_right(seg, seg) IS
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'is over and right of';
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CREATE FUNCTION seg_left(seg, seg) RETURNS bool
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AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
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COMMENT ON FUNCTION seg_left(seg, seg) IS
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'is left of';
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CREATE FUNCTION seg_right(seg, seg) RETURNS bool
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AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
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COMMENT ON FUNCTION seg_right(seg, seg) IS
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'is right of';
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-- Comparison methods
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CREATE FUNCTION seg_lt(seg, seg) RETURNS bool
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AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
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COMMENT ON FUNCTION seg_lt(seg, seg) IS
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'less than';
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CREATE FUNCTION seg_le(seg, seg) RETURNS bool
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AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
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COMMENT ON FUNCTION seg_le(seg, seg) IS
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'less than or equal';
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CREATE FUNCTION seg_gt(seg, seg) RETURNS bool
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AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
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COMMENT ON FUNCTION seg_gt(seg, seg) IS
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'greater than';
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CREATE FUNCTION seg_ge(seg, seg) RETURNS bool
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AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
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COMMENT ON FUNCTION seg_ge(seg, seg) IS
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'greater than or equal';
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CREATE FUNCTION seg_contains(seg, seg) RETURNS bool
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AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
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COMMENT ON FUNCTION seg_contains(seg, seg) IS
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'contains';
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CREATE FUNCTION seg_contained(seg, seg) RETURNS bool
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AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
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COMMENT ON FUNCTION seg_contained(seg, seg) IS
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'contained in';
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CREATE FUNCTION seg_overlap(seg, seg) RETURNS bool
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AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
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COMMENT ON FUNCTION seg_overlap(seg, seg) IS
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'overlaps';
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CREATE FUNCTION seg_same(seg, seg) RETURNS bool
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AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
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COMMENT ON FUNCTION seg_same(seg, seg) IS
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'same as';
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CREATE FUNCTION seg_different(seg, seg) RETURNS bool
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AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
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COMMENT ON FUNCTION seg_different(seg, seg) IS
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'different';
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-- support routines for indexing
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CREATE FUNCTION seg_union(seg, seg) RETURNS seg
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AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
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CREATE FUNCTION seg_inter(seg, seg) RETURNS seg
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AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
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CREATE FUNCTION seg_size(seg) RETURNS float4
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AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
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-- miscellaneous
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CREATE FUNCTION seg_upper(seg) RETURNS float4
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AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
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CREATE FUNCTION seg_lower(seg) RETURNS float4
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AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
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--
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-- OPERATORS
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--
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CREATE OPERATOR < (
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LEFTARG = seg, RIGHTARG = seg, PROCEDURE = seg_lt,
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COMMUTATOR = '>', NEGATOR = '>=',
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RESTRICT = scalarltsel, JOIN = scalarltjoinsel
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);
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CREATE OPERATOR <= (
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LEFTARG = seg, RIGHTARG = seg, PROCEDURE = seg_le,
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COMMUTATOR = '>=', NEGATOR = '>',
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RESTRICT = scalarltsel, JOIN = scalarltjoinsel
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);
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CREATE OPERATOR > (
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LEFTARG = seg, RIGHTARG = seg, PROCEDURE = seg_gt,
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COMMUTATOR = '<', NEGATOR = '<=',
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RESTRICT = scalargtsel, JOIN = scalargtjoinsel
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);
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CREATE OPERATOR >= (
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LEFTARG = seg, RIGHTARG = seg, PROCEDURE = seg_ge,
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COMMUTATOR = '<=', NEGATOR = '<',
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RESTRICT = scalargtsel, JOIN = scalargtjoinsel
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);
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CREATE OPERATOR << (
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LEFTARG = seg, RIGHTARG = seg, PROCEDURE = seg_left,
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COMMUTATOR = '>>',
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RESTRICT = positionsel, JOIN = positionjoinsel
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);
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CREATE OPERATOR &< (
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LEFTARG = seg, RIGHTARG = seg, PROCEDURE = seg_over_left,
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COMMUTATOR = '&>',
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RESTRICT = positionsel, JOIN = positionjoinsel
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);
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CREATE OPERATOR && (
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LEFTARG = seg, RIGHTARG = seg, PROCEDURE = seg_overlap,
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COMMUTATOR = '&&',
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RESTRICT = positionsel, JOIN = positionjoinsel
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);
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CREATE OPERATOR &> (
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LEFTARG = seg, RIGHTARG = seg, PROCEDURE = seg_over_right,
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COMMUTATOR = '&<',
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RESTRICT = positionsel, JOIN = positionjoinsel
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);
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CREATE OPERATOR >> (
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LEFTARG = seg, RIGHTARG = seg, PROCEDURE = seg_right,
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COMMUTATOR = '<<',
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RESTRICT = positionsel, JOIN = positionjoinsel
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);
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CREATE OPERATOR = (
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LEFTARG = seg, RIGHTARG = seg, PROCEDURE = seg_same,
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COMMUTATOR = '=', NEGATOR = '<>',
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RESTRICT = eqsel, JOIN = eqjoinsel,
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SORT1 = '<', SORT2 = '<'
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);
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CREATE OPERATOR <> (
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LEFTARG = seg, RIGHTARG = seg, PROCEDURE = seg_different,
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COMMUTATOR = '<>', NEGATOR = '=',
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RESTRICT = neqsel, JOIN = neqjoinsel
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);
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CREATE OPERATOR @ (
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LEFTARG = seg, RIGHTARG = seg, PROCEDURE = seg_contains,
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COMMUTATOR = '~',
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RESTRICT = contsel, JOIN = contjoinsel
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);
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CREATE OPERATOR ~ (
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LEFTARG = seg, RIGHTARG = seg, PROCEDURE = seg_contained,
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COMMUTATOR = '@',
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RESTRICT = contsel, JOIN = contjoinsel
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);
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-- define the GiST support methods
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CREATE FUNCTION gseg_consistent(internal,seg,int4) RETURNS bool
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AS 'MODULE_PATHNAME' LANGUAGE 'c';
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CREATE FUNCTION gseg_compress(internal) RETURNS internal
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AS 'MODULE_PATHNAME' LANGUAGE 'c';
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CREATE FUNCTION gseg_decompress(internal) RETURNS internal
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AS 'MODULE_PATHNAME' LANGUAGE 'c';
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CREATE FUNCTION gseg_penalty(internal,internal,internal) RETURNS internal
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AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
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CREATE FUNCTION gseg_picksplit(internal, internal) RETURNS internal
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AS 'MODULE_PATHNAME' LANGUAGE 'c';
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CREATE FUNCTION gseg_union(bytea, internal) RETURNS seg
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AS 'MODULE_PATHNAME' LANGUAGE 'c';
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CREATE FUNCTION gseg_same(seg, seg, internal) RETURNS internal
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AS 'MODULE_PATHNAME' LANGUAGE 'c';
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-- Create the operator class for indexing
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CREATE OPERATOR CLASS gist_seg_ops
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DEFAULT FOR TYPE seg USING gist AS
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OPERATOR 1 << ,
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OPERATOR 2 &< ,
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OPERATOR 3 && ,
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OPERATOR 4 &> ,
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OPERATOR 5 >> ,
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OPERATOR 6 = ,
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OPERATOR 7 @ ,
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OPERATOR 8 ~ ,
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FUNCTION 1 gseg_consistent (internal, seg, int4),
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FUNCTION 2 gseg_union (bytea, internal),
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FUNCTION 3 gseg_compress (internal),
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FUNCTION 4 gseg_decompress (internal),
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FUNCTION 5 gseg_penalty (internal, internal, internal),
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FUNCTION 6 gseg_picksplit (internal, internal),
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FUNCTION 7 gseg_same (seg, seg, internal);
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END TRANSACTION;
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