CREATE OR REPLACE FUNCTION blhandler(internal)
RETURNS index_am_handler
AS 'MODULE_PATHNAME'
LANGUAGE C;

-- Access method
CREATE ACCESS METHOD bloom TYPE INDEX HANDLER blhandler;

-- Opclasses

CREATE OPERATOR CLASS int4_ops
DEFAULT FOR TYPE int4 USING bloom AS
	OPERATOR	1	=(int4, int4),
	FUNCTION	1	hashint4(int4);

CREATE OPERATOR CLASS text_ops
DEFAULT FOR TYPE text USING bloom AS
	OPERATOR	1	=(text, text),
	FUNCTION	1	hashtext(text);