open Select;;
open Letin;;
+let prop_pool = ref None;;
+
let fi_to_string fi =
match fi with
(None, _) ->
")"
;;
+let see_prop_pool () =
+ let _ = print_endline "eccomi" in
+ List.iter
+ (fun elem -> print_endline (fst elem ^ ": " ^ snd elem))
+ (match !prop_pool with Some l -> l | _ -> print_endline "ciao"; assert false)
+;;
+
(*
* inizializzazione della connessione al database
*)
-let init () = Dbconn.init ();;
+let init () =
+ let _ = Dbconn.init () in
+ let c = pgc () in
+ let res =
+ c#exec "select name,id from property where ns_id in (select id from namespace where url='http://www.cs.unibo.it/helm/schemas/mattone.rdf#')"
+ in
+ prop_pool := Some
+ (
+ List.map
+ (function
+ a::b::_ -> (a, b)
+ | _ -> print_endline "no"; assert false
+ )
+ res#get_list
+ )
+;;
+
+let get_prop_id prop =
+ if prop="refObj" then "F"
+ else if prop="backPointer" then "B"
+ else List.assoc prop (match !prop_pool with Some l -> l | _ -> assert false)
+;;
(* execute_ex env q *)
(* [env] is the attributed uri environment in which the query [q] *)
MQSelect (apvar, alist, abool) ->
select_ex env apvar (execute_ex env alist) abool
| MQUsedBy (alist, asvar) ->
- use_ex (execute_ex env alist) asvar "F" (*"refObj"*)
+ use_ex (execute_ex env alist) asvar (get_prop_id "refObj") (* "F" (*"refObj"*) *)
| MQUse (alist, asvar) ->
- use_ex (execute_ex env alist) asvar "B" (*"backPointer"*)
+ use_ex (execute_ex env alist) asvar (get_prop_id "backPointer") (* "B" (*"backPointer"*) *)
| MQPattern (apreamble, apattern, afragid) ->
pattern_ex (apreamble, apattern, afragid)
| MQUnion (l1, l2) ->
execute_ex env l2
(*CSC: end of the interesting code *)
in
+ letdispose ();
print_string ("LETIN = " ^ string_of_int (List.length res) ^ ": ") ;
print_endline (string_of_float (Unix.time () -. t) ^ "s") ;
flush stdout ;