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Commit33bd250

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Cube extension kNN support
Introduce distance operators over cubes:<#> taxicab distance<-> euclidean distance<=> chebyshev distanceAlso add kNN support of those distances in GiST opclass.Author: Stas Kelvich
1 parent3d0c50f commit33bd250

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12 files changed

+1684
-4
lines changed

12 files changed

+1684
-4
lines changed

‎contrib/cube/Makefile‎

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@@ -4,7 +4,7 @@ MODULE_big = cube
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OBJS= cube.o cubeparse.o$(WIN32RES)
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EXTENSION = cube
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DATA = cube--1.0.sql cube--unpackaged--1.0.sql
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DATA = cube--1.1.sql cube--1.0--1.1.sql cube--unpackaged--1.0.sql
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PGFILEDESC = "cube - multidimensional cube data type"
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REGRESS = cube

‎contrib/cube/cube--1.0--1.1.sql‎

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@@ -0,0 +1,60 @@
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/* contrib/cube/cube--1.0--1.1.sql*/
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-- complain if script is sourced in psql, rather than via ALTER EXTENSION
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\echo Use"ALTER EXTENSION cube UPDATE TO '1.1'" to load this file. \quit
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CREATEFUNCTIONdistance_chebyshev(cube, cube)
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RETURNS float8
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AS'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATEFUNCTIONdistance_taxicab(cube, cube)
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RETURNS float8
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AS'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATEFUNCTIONcube_coord(cube, int4)
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RETURNS float8
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AS'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATEFUNCTIONcube_coord_llur(cube, int4)
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RETURNS float8
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AS'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATE OPERATOR-> (
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LEFTARG= cube, RIGHTARG=int, PROCEDURE= cube_coord
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);
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CREATE OPERATOR ~> (
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LEFTARG= cube, RIGHTARG=int, PROCEDURE= cube_coord_llur
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);
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CREATE OPERATOR<#> (
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LEFTARG= cube, RIGHTARG= cube, PROCEDURE= distance_taxicab,
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COMMUTATOR='<#>'
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);
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CREATE OPERATOR<-> (
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LEFTARG= cube, RIGHTARG= cube, PROCEDURE= cube_distance,
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COMMUTATOR='<->'
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);
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CREATE OPERATOR<=> (
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LEFTARG= cube, RIGHTARG= cube, PROCEDURE= distance_chebyshev,
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COMMUTATOR='<=>'
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);
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CREATEFUNCTIONg_cube_distance (internal, cube,smallint,oid)
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RETURNS internal
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AS'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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ALTEROPERATOR FAMILY gist_cube_ops USING gist ADD
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OPERATOR15~> (cube,int) FORORDER BY float_ops,
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OPERATOR16<#> (cube, cube) FOR ORDER BY float_ops,
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OPERATOR17<-> (cube, cube) FORORDER BY float_ops,
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OPERATOR18<=> (cube, cube) FORORDER BY float_ops,
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FUNCTION8(cube, cube)g_cube_distance (internal, cube,smallint,oid);
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Lines changed: 56 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -1,4 +1,4 @@
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/* contrib/cube/cube--1.0.sql*/
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/* contrib/cube/cube--1.1.sql*/
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-- complain if script is sourced in psql, rather than via CREATE EXTENSION
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\echo Use"CREATE EXTENSION cube" to load this file. \quit
@@ -140,6 +140,16 @@ RETURNS float8
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AS'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATEFUNCTIONdistance_chebyshev(cube, cube)
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RETURNS float8
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AS'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATEFUNCTIONdistance_taxicab(cube, cube)
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RETURNS float8
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AS'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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-- Extracting elements functions
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CREATEFUNCTIONcube_dim(cube)
@@ -157,6 +167,16 @@ RETURNS float8
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AS'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATEFUNCTIONcube_coord(cube, int4)
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RETURNS float8
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AS'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATEFUNCTIONcube_coord_llur(cube, int4)
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RETURNS float8
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AS'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATEFUNCTIONcube(float8) RETURNS cube
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AS'MODULE_PATHNAME','cube_f8'
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LANGUAGE C IMMUTABLE STRICT;
@@ -246,6 +266,29 @@ CREATE OPERATOR <@ (
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RESTRICT= contsel,JOIN= contjoinsel
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);
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CREATE OPERATOR-> (
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LEFTARG= cube, RIGHTARG=int, PROCEDURE= cube_coord
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);
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CREATE OPERATOR ~> (
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LEFTARG= cube, RIGHTARG=int, PROCEDURE= cube_coord_llur
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);
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CREATE OPERATOR<#> (
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LEFTARG= cube, RIGHTARG= cube, PROCEDURE= distance_taxicab,
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COMMUTATOR='<#>'
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);
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CREATE OPERATOR<-> (
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LEFTARG= cube, RIGHTARG= cube, PROCEDURE= cube_distance,
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COMMUTATOR='<->'
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);
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CREATE OPERATOR<=> (
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LEFTARG= cube, RIGHTARG= cube, PROCEDURE= distance_chebyshev,
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COMMUTATOR='<=>'
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);
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-- these are obsolete/deprecated:
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CREATE OPERATOR @ (
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LEFTARG= cube, RIGHTARG= cube, PROCEDURE= cube_contains,
@@ -296,6 +339,10 @@ RETURNS internal
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AS'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATEFUNCTIONg_cube_distance (internal, cube,smallint,oid)
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RETURNS internal
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AS'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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-- Create the operator classes for indexing
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@@ -316,10 +363,17 @@ CREATE OPERATOR CLASS gist_cube_ops
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OPERATOR8<@ ,
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OPERATOR13@ ,
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OPERATOR14~ ,
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OPERATOR15~> (cube,int) FORORDER BY float_ops,
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OPERATOR16<#> (cube, cube) FOR ORDER BY float_ops,
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OPERATOR17<-> (cube, cube) FORORDER BY float_ops,
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OPERATOR18<=> (cube, cube) FORORDER BY float_ops,
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FUNCTION1g_cube_consistent (internal, cube,int,oid, internal),
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FUNCTION2g_cube_union (internal, internal),
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FUNCTION3g_cube_compress (internal),
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FUNCTION4g_cube_decompress (internal),
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FUNCTION5g_cube_penalty (internal, internal, internal),
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FUNCTION6g_cube_picksplit (internal, internal),
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FUNCTION7g_cube_same (cube, cube, internal);
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FUNCTION7g_cube_same (cube, cube, internal),
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FUNCTION8g_cube_distance (internal, cube,smallint,oid);
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