* MA 02111-1307, USA.
*
* For details, see the HELM World-Wide-Web page,
- * http://cs.unibo.it/helm/.
- *)
-
-(*
- * implementazione del comando PATTERN
+ * http://www.cs.unibo.it/helm/.
*)
open Dbconn;;
open Utility;;
-open Eval;;
-open Mathql_semantics;;
-let pattern_ex (apreamble, apattern, afragid) =
- let c = pgc () in
- (*let r1 = helm_class_id "MathResource" in*)
- (*let qq = "select att0 from t" ^ r1 ^ " where att0 " ^ (pattern_match apreamble apattern afragid) ^ " order by t" ^ r1 ^ ".att0 asc" in*)
- let qq = "select uri from registry where uri " ^ (pattern_match (apreamble, apattern, afragid)) ^ " order by registry.uri asc" in
- (*let _ = print_endline qq in*)
- let res =
- c#exec (qq)
- in
- List.map
- (function uri -> {uri = uri ; attributes = []})
- (pgresult_to_string_list res)
+let cat l1 l2 =
+ if l1 > l2 then
+ l2 @ l1
+ else
+ l1 @ l2
;;
+
+let rec pattern_ex l =
+ match l with
+ [] -> []
+ | s::tl -> let result =
+ let c = pgc () in
+ let qq = "select uri from registry where uri ~ '" ^ s ^ "' order by registry.uri asc" in
+ print_endline qq ; flush stderr ;
+ let res = c#exec (qq) in
+ List.map (function uri -> (uri,[])) (pgresult_to_string_list res)
+ in
+ cat result (pattern_ex tl)
+;;
+