(*
* implementazione del'interprete MathQL
*)
+
+(*
+(* FG: ROBA VECCHIA DA BUTTARE (tranne apertura e chiusura database *)
+
open MathQL;;
open Eval;;
open Utility;;
open Dbconn;;
open Pattern;;
-open Union;;
+open Union;;*)
open Intersect;;
-open Diff;;
+(*open Diff;;
open Sortedby;;
open Use;;
open Select;;
+open Letin;;
+open Mathql_semantics;;
+
+
+
+let prop_pool = ref None;;
let fi_to_string fi =
match fi with
")"
;;
+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) ->
union_ex (execute_ex env l1) (execute_ex env l2)
-(*
| MQDiff (l1, l2) ->
diff_ex (execute_ex env l1) (execute_ex env l2)
| MQSortedBy (l, o, f) ->
sortedby_ex (execute_ex env l) o f
-*)
| MQIntersect (l1, l2) ->
intersect_ex (execute_ex env l1) (execute_ex env l2)
- | MQRVarOccur rvar -> [List.assoc rvar env]
+ | MQListRVar rvar -> [List.assoc rvar env]
+ | MQLetIn (lvar, l1, l2) ->
+ let t = Unix.time () in
+ let res =
+ (*CSC: The interesting code *)
+ let _ = letin_ex lvar (execute_ex env l1) in
+ 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 ;
+ res
+ | MQListLVar lvar ->
+ letref_ex lvar
+ | MQReference l ->
+ let rec build_result = function
+ | [] -> []
+ | s :: tail ->
+ {uri = s ; attributes = [] ; extra = ""} :: build_result tail
+ in build_result (List.sort compare l)
;;
(* Let's initialize the execute in Select, creating a cyclical recursion *)
MQRefs
(List.map
(function l ->
- match Str.split (Str.regexp ":\|#\|/") l with
- hd::tl -> (
+ (*let _ = print_endline ("DEBUG: (mqint.ml: xres_to_res)" ^ l) in*)
+ match Str.split (Str.regexp ":\|#\|/\|(\|)") l with
+ hd::""::tl -> (
match List.rev tl with
- ")"::n::"xpointer(1"::tail ->
+ n::"1"::"xpointer"::tail ->
(
Some hd,
List.fold_left
tail,
[MQFC (int_of_string n)]
)
- | ")"::n::m::"xpointer(1"::tail ->
+ | n::m::"1"::"xpointer"::tail ->
(
Some hd,
List.fold_left
[]
)
)
- | [] -> assert false
+ | _ -> assert false
)
tmp
)
*)
let close () = Dbconn.close ();;
+*****************************************************************************)
+
+let init () = () (* FG: implementare l'apertura del database *)
+
+let close () = () (* FG: implementare la chiusura del database *)
+
+
+(* contexts *****************************************************************)
+
+type svar_context = (MathQL.svar * MathQL.resource_set) list
+
+type rvar_context = (MathQL.rvar * MathQL.resource) list
+
+type group_context = (MathQL.rvar * MathQL.attribute_group) list
+
+type vvar_context = (MathQL.vvar * MathQL.value) list
+
+
+let svars = ref [] (* contesto delle svar *)
+
+let rvars = ref [] (* contesto delle rvar *)
+
+let groups = ref [] (* contesto dei gruppi *)
+
+let vvars = ref [] (* contesto delle vvar introdotte con let-in *)
+
+
+let rec exec_set_exp = function
+ | MathQL.Ref vexp -> List.map (fun s -> (s,[])) (exec_val_exp vexp)
+ | MathQL.Intersect sexp1 sexp2 -> intersect_ex (exec_set_exp sexp1) (exec_set_exp sexp2)
+ | _ -> assert false
+
+(* valuta una MathQL.boole_exp e ritorna un boole *)
+
+and exec_boole_exp = function
+ | MathQL.False -> false
+ | MathQL.True -> true
+ | MathQL.Not x -> not (exec_boole_exp x)
+ | MathQL.And (x, y) -> (exec_boole_exp x) && (exec_boole_exp y)
+ | MathQL.Or (x, y) -> (exec_boole_exp x) || (exec_boole_exp y)
+ | _ -> assert false
+
+(* valuta una MathQL.val_exp e ritorna un MathQL.value *)
+
+and exec_val_exp = function
+ | MathQL.Const x -> x
+ | _ -> assert false
+
+(* valuta una MathQL.set_exp nel contesto vuoto e ritorna un MathQL.resource_set *)
+
+(* valuta una MathQL.set_exp e ritorna un MathQL.resource_set *)
+let execute x =
+ svars := []; rvars := []; groups := []; vvars := [];
+ exec_set_exp x
+
projects / helm.git / blobdiff