Convering a procedure to HANA information views

Hi

I have the following procedure which I need to convert into calc/attribute view . Please suggest how to do that?

procedure proc1(IN p1 numeric, IN p2 numeric, OUT ref cursor )

declare

var1 character varying;

begin

    select     region

    into     var1

    from      unit_level_mapping

    where      unit = p1

    and     level = p2;

    if(p1 = 1) then

        open ret_cursor for

        SELECT region_code,region_name

        FROM t_region where code = 3;

    elsif(p1 = 2) then

        open ret_cursor for

        SELECT at_country_code, at_country_name

        FROM t_country where at_regioncode = var1;  -- from the initial select stmt

    end if;

end    ;

Regards

Rajib