-- Create the user-defined type for N-dimensional boxes
-- 
BEGIN TRANSACTION;

CREATE FUNCTION cube_in(opaque)
RETURNS opaque
AS 'MODULE_PATHNAME'
LANGUAGE 'c';

CREATE FUNCTION cube_out(opaque)
RETURNS opaque
AS 'MODULE_PATHNAME'
LANGUAGE 'c';

CREATE TYPE cube (
internallength = variable,
input = cube_in,
output = cube_out
);

COMMENT ON TYPE cube IS
'multi-dimensional cube ''(FLOAT-1, FLOAT-2, ..., FLOAT-N), (FLOAT-1, FLOAT-2, ..., FLOAT-N)''';

--
-- External C-functions for R-tree methods
--

-- Left/Right methods

CREATE FUNCTION cube_over_left(cube, cube) RETURNS bool
	AS 'MODULE_PATHNAME' LANGUAGE 'c';

COMMENT ON FUNCTION cube_over_left(cube, cube) IS
'is over and left of (NOT IMPLEMENTED)';

CREATE FUNCTION cube_over_right(cube, cube) RETURNS bool
	AS 'MODULE_PATHNAME' LANGUAGE 'c';

COMMENT ON FUNCTION cube_over_right(cube, cube) IS
'is over and right of (NOT IMPLEMENTED)';

CREATE FUNCTION cube_left(cube, cube) RETURNS bool
	AS 'MODULE_PATHNAME' LANGUAGE 'c';

COMMENT ON FUNCTION cube_left(cube, cube) IS
'is left of (NOT IMPLEMENTED)';

CREATE FUNCTION cube_right(cube, cube) RETURNS bool
	AS 'MODULE_PATHNAME' LANGUAGE 'c';

COMMENT ON FUNCTION cube_right(cube, cube) IS
'is right of (NOT IMPLEMENTED)';


-- Comparison methods

CREATE FUNCTION cube_lt(cube, cube) RETURNS bool
	AS 'MODULE_PATHNAME' LANGUAGE 'c';

COMMENT ON FUNCTION cube_lt(cube, cube) IS
'lower than';

CREATE FUNCTION cube_gt(cube, cube) RETURNS bool
	AS 'MODULE_PATHNAME' LANGUAGE 'c';

COMMENT ON FUNCTION cube_gt(cube, cube) IS
'greater than';

CREATE FUNCTION cube_contains(cube, cube) RETURNS bool
	AS 'MODULE_PATHNAME' LANGUAGE 'c';

COMMENT ON FUNCTION cube_contains(cube, cube) IS
'contains';

CREATE FUNCTION cube_contained(cube, cube) RETURNS bool
	AS 'MODULE_PATHNAME' LANGUAGE 'c';

COMMENT ON FUNCTION cube_contained(cube, cube) IS
'contained in';

CREATE FUNCTION cube_overlap(cube, cube) RETURNS bool
	AS 'MODULE_PATHNAME' LANGUAGE 'c';

COMMENT ON FUNCTION cube_overlap(cube, cube) IS
'overlaps';

CREATE FUNCTION cube_same(cube, cube) RETURNS bool
	AS 'MODULE_PATHNAME' LANGUAGE 'c';

COMMENT ON FUNCTION cube_same(cube, cube) IS
'same as';

CREATE FUNCTION cube_different(cube, cube) RETURNS bool
	AS 'MODULE_PATHNAME' LANGUAGE 'c';

COMMENT ON FUNCTION cube_different(cube, cube) IS
'different';

-- support routines for indexing

CREATE FUNCTION cube_union(cube, cube) RETURNS cube
	AS 'MODULE_PATHNAME' LANGUAGE 'c';

CREATE FUNCTION cube_inter(cube, cube) RETURNS cube
	AS 'MODULE_PATHNAME' LANGUAGE 'c';

CREATE FUNCTION cube_size(cube) RETURNS float4
	AS 'MODULE_PATHNAME' LANGUAGE 'c';


-- Misc N-dimensional functions

-- proximity routines

CREATE FUNCTION cube_distance(cube, cube) RETURNS float4
	AS 'MODULE_PATHNAME' LANGUAGE 'c';


--
-- OPERATORS
--

CREATE OPERATOR < (
   LEFTARG = cube, RIGHTARG = cube, PROCEDURE = cube_lt,
   COMMUTATOR = '>',
   RESTRICT = scalarltsel, JOIN = scalarltjoinsel
);

CREATE OPERATOR > (
   LEFTARG = cube, RIGHTARG = cube, PROCEDURE = cube_gt,
   COMMUTATOR = '<',
   RESTRICT = scalargtsel, JOIN = scalargtjoinsel
);

CREATE OPERATOR << (
   LEFTARG = cube, RIGHTARG = cube, PROCEDURE = cube_left,
   COMMUTATOR = '>>',
   RESTRICT = positionsel, JOIN = positionjoinsel
);

CREATE OPERATOR &< (
   LEFTARG = cube, RIGHTARG = cube, PROCEDURE = cube_over_left,
   COMMUTATOR = '&>',
   RESTRICT = positionsel, JOIN = positionjoinsel
);

CREATE OPERATOR && (
   LEFTARG = cube, RIGHTARG = cube, PROCEDURE = cube_overlap,
   COMMUTATOR = '&&',
   RESTRICT = positionsel, JOIN = positionjoinsel
);

CREATE OPERATOR &> (
   LEFTARG = cube, RIGHTARG = cube, PROCEDURE = cube_over_right,
   COMMUTATOR = '&<',
   RESTRICT = positionsel, JOIN = positionjoinsel
);

CREATE OPERATOR >> (
   LEFTARG = cube, RIGHTARG = cube, PROCEDURE = cube_right,
   COMMUTATOR = '<<',
   RESTRICT = positionsel, JOIN = positionjoinsel
);

CREATE OPERATOR = (
   LEFTARG = cube, RIGHTARG = cube, PROCEDURE = cube_same,
   COMMUTATOR = '=', NEGATOR = '<>',
   RESTRICT = eqsel, JOIN = eqjoinsel,
   SORT1 = '<', SORT2 = '<'
);

CREATE OPERATOR <> (
   LEFTARG = cube, RIGHTARG = cube, PROCEDURE = cube_different,
   COMMUTATOR = '<>', NEGATOR = '=',
   RESTRICT = neqsel, JOIN = neqjoinsel
);

CREATE OPERATOR @ (
   LEFTARG = cube, RIGHTARG = cube, PROCEDURE = cube_contains,
   COMMUTATOR = '~',
   RESTRICT = contsel, JOIN = contjoinsel
);

CREATE OPERATOR ~ (
   LEFTARG = cube, RIGHTARG = cube, PROCEDURE = cube_contained,
   COMMUTATOR = '@',
   RESTRICT = contsel, JOIN = contjoinsel
);


-- define the GiST support methods
CREATE FUNCTION g_cube_consistent(opaque,cube,int4) RETURNS bool
	AS 'MODULE_PATHNAME' LANGUAGE 'c';

CREATE FUNCTION g_cube_compress(opaque) RETURNS opaque 
	AS 'MODULE_PATHNAME' LANGUAGE 'c';

CREATE FUNCTION g_cube_decompress(opaque) RETURNS opaque 
	AS 'MODULE_PATHNAME' LANGUAGE 'c';

CREATE FUNCTION g_cube_penalty(opaque,opaque,opaque) RETURNS opaque
	AS 'MODULE_PATHNAME' LANGUAGE 'c';

CREATE FUNCTION g_cube_picksplit(opaque, opaque) RETURNS opaque
	AS 'MODULE_PATHNAME' LANGUAGE 'c';

CREATE FUNCTION g_cube_union(bytea, opaque) RETURNS cube 
	AS 'MODULE_PATHNAME' LANGUAGE 'c';

CREATE FUNCTION g_cube_same(cube, cube, opaque) RETURNS opaque 
	AS 'MODULE_PATHNAME' LANGUAGE 'c';


-- register the default opclass for indexing
INSERT INTO pg_opclass (opcname, opcdeftype)
   SELECT 'gist_cube_ops', oid
   FROM pg_type
   WHERE typname = 'cube';


-- get the comparators for boxes and store them in a tmp table
SELECT o.oid AS opoid, o.oprname
INTO TABLE gist_cube_ops_tmp
FROM pg_operator o, pg_type t
WHERE o.oprleft = t.oid and o.oprright = t.oid
   and t.typname = 'cube';

-- make sure we have the right operators
-- SELECT * from gist_cube_ops_tmp;

-- using the tmp table, generate the amop entries 

-- cube_left
INSERT INTO pg_amop (amopid, amopclaid, amopopr, amopstrategy)
   SELECT am.oid, opcl.oid, c.opoid, 1
   FROM pg_am am, pg_opclass opcl, gist_cube_ops_tmp c
   WHERE amname = 'gist' and opcname = 'gist_cube_ops' 
      and c.oprname = '<<';

-- cube_over_left
INSERT INTO pg_amop (amopid, amopclaid, amopopr, amopstrategy)
   SELECT am.oid, opcl.oid, c.opoid, 2
   FROM pg_am am, pg_opclass opcl, gist_cube_ops_tmp c
   WHERE amname = 'gist' and opcname = 'gist_cube_ops' 
      and c.oprname = '&<';

-- cube_overlap
INSERT INTO pg_amop (amopid, amopclaid, amopopr, amopstrategy)
   SELECT am.oid, opcl.oid, c.opoid, 3
   FROM pg_am am, pg_opclass opcl, gist_cube_ops_tmp c
   WHERE amname = 'gist' and opcname = 'gist_cube_ops' 
      and c.oprname = '&&';

-- cube_over_right
INSERT INTO pg_amop (amopid, amopclaid, amopopr, amopstrategy)
   SELECT am.oid, opcl.oid, c.opoid, 4
   FROM pg_am am, pg_opclass opcl, gist_cube_ops_tmp c
   WHERE amname = 'gist' and opcname = 'gist_cube_ops' 
      and c.oprname = '&>';

-- cube_right
INSERT INTO pg_amop (amopid, amopclaid, amopopr, amopstrategy)
   SELECT am.oid, opcl.oid, c.opoid, 5
   FROM pg_am am, pg_opclass opcl, gist_cube_ops_tmp c
   WHERE amname = 'gist' and opcname = 'gist_cube_ops' 
      and c.oprname = '>>';

-- cube_same
INSERT INTO pg_amop (amopid, amopclaid, amopopr, amopstrategy)
   SELECT am.oid, opcl.oid, c.opoid, 6
   FROM pg_am am, pg_opclass opcl, gist_cube_ops_tmp c
   WHERE amname = 'gist' and opcname = 'gist_cube_ops' 
      and c.oprname = '=';

-- cube_contains
INSERT INTO pg_amop (amopid, amopclaid, amopopr, amopstrategy)
   SELECT am.oid, opcl.oid, c.opoid, 7
   FROM pg_am am, pg_opclass opcl, gist_cube_ops_tmp c
   WHERE amname = 'gist' and opcname = 'gist_cube_ops' 
      and c.oprname = '@';

-- cube_contained
INSERT INTO pg_amop (amopid, amopclaid, amopopr, amopstrategy)
   SELECT am.oid, opcl.oid, c.opoid, 8
   FROM pg_am am, pg_opclass opcl, gist_cube_ops_tmp c
   WHERE amname = 'gist' and opcname = 'gist_cube_ops' 
      and c.oprname = '~';

DROP TABLE gist_cube_ops_tmp;


-- add the entries to amproc for the support methods
-- note the amprocnum numbers associated with each are specific!

INSERT INTO pg_amproc (amid, amopclaid, amproc, amprocnum)
   SELECT am.oid, opcl.oid, pro.oid, 1
   FROM pg_am am, pg_opclass opcl, pg_proc pro
   WHERE  amname = 'gist' and opcname = 'gist_cube_ops'
      and proname = 'g_cube_consistent';

INSERT INTO pg_amproc (amid, amopclaid, amproc, amprocnum)
   SELECT am.oid, opcl.oid, pro.oid, 2
   FROM pg_am am, pg_opclass opcl, pg_proc pro
   WHERE  amname = 'gist' and opcname = 'gist_cube_ops'
      and proname = 'g_cube_union';

INSERT INTO pg_amproc (amid, amopclaid, amproc, amprocnum)
   SELECT am.oid, opcl.oid, pro.oid, 3
   FROM pg_am am, pg_opclass opcl, pg_proc pro
   WHERE  amname = 'gist' and opcname = 'gist_cube_ops'
      and proname = 'g_cube_compress';

INSERT INTO pg_amproc (amid, amopclaid, amproc, amprocnum)
   SELECT am.oid, opcl.oid, pro.oid, 4
   FROM pg_am am, pg_opclass opcl, pg_proc pro
   WHERE  amname = 'gist' and opcname = 'gist_cube_ops'
      and proname = 'g_cube_decompress';

INSERT INTO pg_amproc (amid, amopclaid, amproc, amprocnum)
   SELECT am.oid, opcl.oid, pro.oid, 5
   FROM pg_am am, pg_opclass opcl, pg_proc pro
   WHERE  amname = 'gist' and opcname = 'gist_cube_ops'
      and proname = 'g_cube_penalty';

INSERT INTO pg_amproc (amid, amopclaid, amproc, amprocnum)
   SELECT am.oid, opcl.oid, pro.oid, 6
   FROM pg_am am, pg_opclass opcl, pg_proc pro
   WHERE  amname = 'gist' and opcname = 'gist_cube_ops'
      and proname = 'g_cube_picksplit';

INSERT INTO pg_amproc (amid, amopclaid, amproc, amprocnum)
   SELECT am.oid, opcl.oid, pro.oid, 7
   FROM pg_am am, pg_opclass opcl, pg_proc pro
   WHERE  amname = 'gist' and opcname = 'gist_cube_ops'
      and proname = 'g_cube_same';

END TRANSACTION;
