BEGIN;

-- Adjust this setting to control where the objects get created.
SET search_path = public;

CREATE FUNCTION ltree_in(opaque)
RETURNS opaque
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict);

CREATE FUNCTION ltree_out(opaque)
RETURNS opaque
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict);

CREATE TYPE ltree (
internallength = -1,
input = ltree_in,
output = ltree_out,
storage = extended
);


--Compare function for ltree
CREATE FUNCTION ltree_cmp(ltree,ltree)
RETURNS int4
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict,iscachable);

CREATE FUNCTION ltree_lt(ltree,ltree)
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict,iscachable);

CREATE FUNCTION ltree_le(ltree,ltree)
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict,iscachable);

CREATE FUNCTION ltree_eq(ltree,ltree)
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict,iscachable);

CREATE FUNCTION ltree_ge(ltree,ltree)
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict,iscachable);

CREATE FUNCTION ltree_gt(ltree,ltree)
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict,iscachable);

CREATE FUNCTION ltree_ne(ltree,ltree)
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict,iscachable);


CREATE OPERATOR < (
        LEFTARG = ltree, RIGHTARG = ltree, PROCEDURE = ltree_lt,
        COMMUTATOR = '>', NEGATOR = '>=',
        RESTRICT = contsel, JOIN = contjoinsel
);

CREATE OPERATOR <= (
        LEFTARG = ltree, RIGHTARG = ltree, PROCEDURE = ltree_le,
        COMMUTATOR = '>=', NEGATOR = '>',
        RESTRICT = contsel, JOIN = contjoinsel
);

CREATE OPERATOR >= (
        LEFTARG = ltree, RIGHTARG = ltree, PROCEDURE = ltree_ge,
        COMMUTATOR = '<=', NEGATOR = '<',
        RESTRICT = contsel, JOIN = contjoinsel
);

CREATE OPERATOR > (
        LEFTARG = ltree, RIGHTARG = ltree, PROCEDURE = ltree_gt,
        COMMUTATOR = '<', NEGATOR = '<=',
        RESTRICT = contsel, JOIN = contjoinsel
);

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

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

--util functions

CREATE FUNCTION subltree(ltree,int4,int4)
RETURNS ltree
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict,iscachable);

CREATE FUNCTION subpath(ltree,int4,int4)
RETURNS ltree
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict,iscachable);

CREATE FUNCTION subpath(ltree,int4)
RETURNS ltree
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict,iscachable);

CREATE FUNCTION nlevel(ltree)
RETURNS int4
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict,iscachable);

CREATE FUNCTION ltree_isparent(ltree,ltree)
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict,iscachable);

CREATE FUNCTION ltree_risparent(ltree,ltree)
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict,iscachable);

CREATE FUNCTION ltree_addltree(ltree,ltree)
RETURNS ltree
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict,iscachable);

CREATE FUNCTION ltree_addtext(ltree,text)
RETURNS ltree
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict,iscachable);

CREATE FUNCTION ltree_textadd(text,ltree)
RETURNS ltree
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict,iscachable);

CREATE OPERATOR @> (
        LEFTARG = ltree, RIGHTARG = ltree, PROCEDURE = ltree_isparent,
        COMMUTATOR = '<@',
        RESTRICT = contsel, JOIN = contjoinsel
);

CREATE OPERATOR ^@> (
        LEFTARG = ltree, RIGHTARG = ltree, PROCEDURE = ltree_isparent,
        COMMUTATOR = '^<@',
        RESTRICT = contsel, JOIN = contjoinsel
);

CREATE OPERATOR <@ (
        LEFTARG = ltree, RIGHTARG = ltree, PROCEDURE = ltree_risparent,
        COMMUTATOR = '@>',
        RESTRICT = contsel, JOIN = contjoinsel
);

CREATE OPERATOR ^<@ (
        LEFTARG = ltree, RIGHTARG = ltree, PROCEDURE = ltree_risparent,
        COMMUTATOR = '^@>',
        RESTRICT = contsel, JOIN = contjoinsel
);

CREATE OPERATOR || (
        LEFTARG = ltree, RIGHTARG = ltree, PROCEDURE = ltree_addltree
);

CREATE OPERATOR || (
        LEFTARG = ltree, RIGHTARG = text, PROCEDURE = ltree_addtext
);

CREATE OPERATOR || (
        LEFTARG = text, RIGHTARG = ltree, PROCEDURE = ltree_textadd
);


-- B-tree support

CREATE OPERATOR CLASS ltree_ops
    DEFAULT FOR TYPE ltree USING btree AS
        OPERATOR        1       < ,
        OPERATOR        2       <= ,
        OPERATOR        3       = ,
        OPERATOR        4       >= ,
        OPERATOR        5       > ,
        FUNCTION        1       ltree_cmp(ltree, ltree);


--lquery type
CREATE FUNCTION lquery_in(opaque)
RETURNS opaque
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict);

CREATE FUNCTION lquery_out(opaque)
RETURNS opaque
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict);

CREATE TYPE lquery (
internallength = -1,
input = lquery_in,
output = lquery_out,
storage = extended
);

CREATE FUNCTION ltq_regex(ltree,lquery)
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict,iscachable);

CREATE FUNCTION ltq_rregex(lquery,ltree)
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict,iscachable);

CREATE OPERATOR ~ (
        LEFTARG = ltree, RIGHTARG = lquery, PROCEDURE = ltq_regex,
	COMMUTATOR = '~',
	RESTRICT = contsel, JOIN = contjoinsel
);

CREATE OPERATOR ~ (
        LEFTARG = lquery, RIGHTARG = ltree, PROCEDURE = ltq_rregex,
	COMMUTATOR = '~',
	RESTRICT = contsel, JOIN = contjoinsel
);

--not-indexed
CREATE OPERATOR ^~ (
        LEFTARG = ltree, RIGHTARG = lquery, PROCEDURE = ltq_regex,
	COMMUTATOR = '^~',
	RESTRICT = contsel, JOIN = contjoinsel
);

CREATE OPERATOR ^~ (
        LEFTARG = lquery, RIGHTARG = ltree, PROCEDURE = ltq_rregex,
	COMMUTATOR = '^~',
	RESTRICT = contsel, JOIN = contjoinsel
);

CREATE FUNCTION ltxtq_in(opaque)
RETURNS opaque
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict);

CREATE FUNCTION ltxtq_out(opaque)
RETURNS opaque
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict);

CREATE TYPE ltxtquery (
internallength = -1,
input = ltxtq_in,
output = ltxtq_out,
storage = extended
);

-- operations with ltxtquery

CREATE FUNCTION ltxtq_exec(ltree, ltxtquery)
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict, iscachable);

CREATE FUNCTION ltxtq_rexec(ltxtquery, ltree)
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict, iscachable);

CREATE OPERATOR @ (
        LEFTARG = ltree, RIGHTARG = ltxtquery, PROCEDURE = ltxtq_exec,
	COMMUTATOR = '@',
	RESTRICT = contsel, JOIN = contjoinsel
);

CREATE OPERATOR @ (
        LEFTARG = ltxtquery, RIGHTARG = ltree, PROCEDURE = ltxtq_rexec,
	COMMUTATOR = '@',
	RESTRICT = contsel, JOIN = contjoinsel
);

--not-indexed
CREATE OPERATOR ^@ (
        LEFTARG = ltree, RIGHTARG = ltxtquery, PROCEDURE = ltxtq_exec,
	COMMUTATOR = '^@',
	RESTRICT = contsel, JOIN = contjoinsel
);

CREATE OPERATOR ^@ (
        LEFTARG = ltxtquery, RIGHTARG = ltree, PROCEDURE = ltxtq_rexec,
	COMMUTATOR = '^@',
	RESTRICT = contsel, JOIN = contjoinsel
);

--GiST support for ltree
CREATE FUNCTION ltree_gist_in(opaque)
RETURNS opaque
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict);
   
CREATE FUNCTION ltree_gist_out(opaque)
RETURNS opaque
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict);
   
CREATE TYPE ltree_gist (
	internallength = -1,
	input = ltree_gist_in,
	output = ltree_gist_out,
	storage = plain
);    


create function ltree_consistent(opaque,opaque,int2) returns bool as 'MODULE_PATHNAME' language 'C';
create function ltree_compress(opaque) returns opaque as 'MODULE_PATHNAME' language 'C';
create function ltree_decompress(opaque) returns opaque as 'MODULE_PATHNAME' language 'C';
create function ltree_penalty(opaque,opaque,opaque) returns opaque as 'MODULE_PATHNAME' language 'C' with(isstrict);
create function ltree_picksplit(opaque, opaque) returns opaque as 'MODULE_PATHNAME' language 'C';
create function ltree_union(bytea, opaque) returns int4 as 'MODULE_PATHNAME' language 'C';
create function ltree_same(opaque, opaque, opaque) returns opaque as 'MODULE_PATHNAME' language 'C';

CREATE OPERATOR CLASS gist_ltree_ops
    DEFAULT FOR TYPE ltree USING gist AS
	OPERATOR	1	< ,
	OPERATOR	2	<= ,
	OPERATOR	3	= ,
	OPERATOR	4	>= ,
	OPERATOR	5	> ,
	OPERATOR	10	@> ,
	OPERATOR	11	<@ ,
	OPERATOR	12	~ (ltree, lquery) ,
	OPERATOR	13	~ (lquery, ltree) ,
	OPERATOR	14	@ (ltree, ltxtquery) ,
	OPERATOR	15	@ (ltxtquery, ltree) ,
	FUNCTION	1	ltree_consistent (opaque, opaque, int2),
	FUNCTION	2	ltree_union (bytea, opaque),
	FUNCTION	3	ltree_compress (opaque),
	FUNCTION	4	ltree_decompress (opaque),
	FUNCTION	5	ltree_penalty (opaque, opaque, opaque),
	FUNCTION	6	ltree_picksplit (opaque, opaque),
	FUNCTION	7	ltree_same (opaque, opaque, opaque),
	STORAGE		ltree_gist;


-- arrays of ltree

CREATE FUNCTION _ltree_isparent(_ltree,ltree)
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict,iscachable);

CREATE FUNCTION _ltree_r_isparent(ltree,_ltree)
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict,iscachable);

CREATE FUNCTION _ltree_risparent(_ltree,ltree)
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict,iscachable);

CREATE FUNCTION _ltree_r_risparent(ltree,_ltree)
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict,iscachable);

CREATE FUNCTION _ltq_regex(_ltree,lquery)
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict,iscachable);

CREATE FUNCTION _ltq_rregex(lquery,_ltree)
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict,iscachable);

CREATE FUNCTION _ltxtq_exec(_ltree, ltxtquery)
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict, iscachable);

CREATE FUNCTION _ltxtq_rexec(ltxtquery, _ltree)
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict, iscachable);

CREATE OPERATOR @> (
        LEFTARG = _ltree, RIGHTARG = ltree, PROCEDURE = _ltree_isparent,
        COMMUTATOR = '<@',
        RESTRICT = contsel, JOIN = contjoinsel
);

CREATE OPERATOR <@ (
        LEFTARG = ltree, RIGHTARG = _ltree, PROCEDURE = _ltree_r_isparent,
        COMMUTATOR = '@>',
        RESTRICT = contsel, JOIN = contjoinsel
);

CREATE OPERATOR <@ (
        LEFTARG = _ltree, RIGHTARG = ltree, PROCEDURE = _ltree_risparent,
        COMMUTATOR = '@>',
        RESTRICT = contsel, JOIN = contjoinsel
);

CREATE OPERATOR @> (
        LEFTARG = ltree, RIGHTARG = _ltree, PROCEDURE = _ltree_r_risparent,
        COMMUTATOR = '<@',
        RESTRICT = contsel, JOIN = contjoinsel
);

CREATE OPERATOR ~ (
        LEFTARG = _ltree, RIGHTARG = lquery, PROCEDURE = _ltq_regex,
        COMMUTATOR = '~',
        RESTRICT = contsel, JOIN = contjoinsel
);

CREATE OPERATOR ~ (
        LEFTARG = lquery, RIGHTARG = _ltree, PROCEDURE = _ltq_rregex,
        COMMUTATOR = '~',
        RESTRICT = contsel, JOIN = contjoinsel
);

CREATE OPERATOR @ (
        LEFTARG = _ltree, RIGHTARG = ltxtquery, PROCEDURE = _ltxtq_exec,
        COMMUTATOR = '@',
        RESTRICT = contsel, JOIN = contjoinsel
);

CREATE OPERATOR @ (
        LEFTARG = ltxtquery, RIGHTARG = _ltree, PROCEDURE = _ltxtq_rexec,
        COMMUTATOR = '@',
        RESTRICT = contsel, JOIN = contjoinsel
);


--not indexed
CREATE OPERATOR ^@> (
        LEFTARG = _ltree, RIGHTARG = ltree, PROCEDURE = _ltree_isparent,
        COMMUTATOR = '^<@',
        RESTRICT = contsel, JOIN = contjoinsel
);

CREATE OPERATOR ^<@ (
        LEFTARG = ltree, RIGHTARG = _ltree, PROCEDURE = _ltree_r_isparent,
        COMMUTATOR = '^@>',
        RESTRICT = contsel, JOIN = contjoinsel
);

CREATE OPERATOR ^<@ (
        LEFTARG = _ltree, RIGHTARG = ltree, PROCEDURE = _ltree_risparent,
        COMMUTATOR = '^@>',
        RESTRICT = contsel, JOIN = contjoinsel
);

CREATE OPERATOR ^@> (
        LEFTARG = ltree, RIGHTARG = _ltree, PROCEDURE = _ltree_r_risparent,
        COMMUTATOR = '^<@',
        RESTRICT = contsel, JOIN = contjoinsel
);

CREATE OPERATOR ^~ (
        LEFTARG = _ltree, RIGHTARG = lquery, PROCEDURE = _ltq_regex,
        COMMUTATOR = '^~',
        RESTRICT = contsel, JOIN = contjoinsel
);

CREATE OPERATOR ^~ (
        LEFTARG = lquery, RIGHTARG = _ltree, PROCEDURE = _ltq_rregex,
        COMMUTATOR = '^~',
        RESTRICT = contsel, JOIN = contjoinsel
);

CREATE OPERATOR ^@ (
        LEFTARG = _ltree, RIGHTARG = ltxtquery, PROCEDURE = _ltxtq_exec,
        COMMUTATOR = '^@',
        RESTRICT = contsel, JOIN = contjoinsel
);

CREATE OPERATOR ^@ (
        LEFTARG = ltxtquery, RIGHTARG = _ltree, PROCEDURE = _ltxtq_rexec,
        COMMUTATOR = '^@',
        RESTRICT = contsel, JOIN = contjoinsel
);

--extractors
CREATE FUNCTION _ltree_extract_isparent(_ltree,ltree)
RETURNS ltree
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict,iscachable);

CREATE OPERATOR ?@> (
        LEFTARG = _ltree, RIGHTARG = ltree, PROCEDURE = _ltree_extract_isparent
);

CREATE FUNCTION _ltree_extract_risparent(_ltree,ltree)
RETURNS ltree
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict,iscachable);

CREATE OPERATOR ?<@ (
        LEFTARG = _ltree, RIGHTARG = ltree, PROCEDURE = _ltree_extract_risparent
);

CREATE FUNCTION _ltq_extract_regex(_ltree,lquery)
RETURNS ltree
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict,iscachable);

CREATE OPERATOR ?~ (
        LEFTARG = _ltree, RIGHTARG = lquery, PROCEDURE = _ltq_extract_regex
);

CREATE FUNCTION _ltxtq_extract_exec(_ltree,ltxtquery)
RETURNS ltree
AS 'MODULE_PATHNAME'
LANGUAGE 'c' with (isstrict,iscachable);

CREATE OPERATOR ?@ (
        LEFTARG = _ltree, RIGHTARG = ltxtquery, PROCEDURE = _ltxtq_extract_exec
);

--GiST support for ltree[]
create function _ltree_consistent(opaque,opaque,int2) returns bool as 'MODULE_PATHNAME' language 'C';
create function _ltree_compress(opaque) returns opaque as 'MODULE_PATHNAME' language 'C';
create function _ltree_penalty(opaque,opaque,opaque) returns opaque as 'MODULE_PATHNAME' language 'C' with(isstrict);
create function _ltree_picksplit(opaque, opaque) returns opaque as 'MODULE_PATHNAME' language 'C';
create function _ltree_union(bytea, opaque) returns int4 as 'MODULE_PATHNAME' language 'C';
create function _ltree_same(opaque, opaque, opaque) returns opaque as 'MODULE_PATHNAME' language 'C';

CREATE OPERATOR CLASS gist__ltree_ops
    DEFAULT FOR TYPE _ltree USING gist AS
	OPERATOR	10	<@ (_ltree, ltree)	RECHECK ,
	OPERATOR	11	@> (ltree, _ltree)	RECHECK ,
	OPERATOR	12	~ (_ltree, lquery)	RECHECK ,
	OPERATOR	13	~ (lquery, _ltree)	RECHECK ,
	OPERATOR	14	@ (_ltree, ltxtquery)	RECHECK ,
	OPERATOR	15	@ (ltxtquery, _ltree)	RECHECK ,
	FUNCTION	1	_ltree_consistent (opaque, opaque, int2),
	FUNCTION	2	_ltree_union (bytea, opaque),
	FUNCTION	3	_ltree_compress (opaque),
	FUNCTION	4	ltree_decompress (opaque),
	FUNCTION	5	_ltree_penalty (opaque, opaque, opaque),
	FUNCTION	6	_ltree_picksplit (opaque, opaque),
	FUNCTION	7	_ltree_same (opaque, opaque, opaque),
	STORAGE		ltree_gist;


END;