let in updated with the grammar

[helm.git] / helm / ocaml / mathql_interpreter / use.ml

diff --git a/helm/ocaml/mathql_interpreter/use.ml b/helm/ocaml/mathql_interpreter/use.ml
index 899a2bf8923ff9d264f4625a7364e6b51da2bb54..ed8a855ec1f86b994bd184f0d1736bb71061c079 100644 (file)
--- a/helm/ocaml/mathql_interpreter/use.ml
+++ b/helm/ocaml/mathql_interpreter/use.ml
@@ -20,7 +20,7 @@
  * MA  02111-1307, USA.
  * 
  * For details, see the HELM World-Wide-Web page,
- * http://cs.unibo.it/helm/.
+ * http://www.cs.unibo.it/helm/.
  *)
 
 (*
@@ -45,70 +45,87 @@ open Dbconn;;
  *                           comando USE/USED BY
  *)
 let use_ex alist asvar usek =
+ (*(*let _ = print_string ("USE ")
+ and t = Unix.time () in*)
+ let result =
+  let c = pgc ()
+  in
+   [ (List.hd alist) @ [asvar] ]
+   @
+   Sort.list
+    (fun l m -> List.hd l < List.hd m)
+    (List.fold_left
+     (fun parziale xres ->
+      (*let r1 = helm_property_id usek
+      and r2 = helm_property_id "position"
+      and r3 = helm_property_id "occurrence"
+      in
+       let qq = "select distinct t" ^ r3 ^ ".att1, t" ^ r2 ^ ".att1 " ^
+        "from t" ^ r3 ^ ", t" ^ r2 ^ ", t" ^ r1 ^ " " ^
+        "where " ^ "t" ^ r1 ^ ".att0 = '" ^ (List.hd xres) ^ "' and t" ^ r1 ^
+        ".att1 = t" ^ r2 ^ ".att0 and t" ^ r1 ^ ".att1 = t" ^ r3 ^
+        ".att0 order by t" ^ r3 ^ ".att1 asc"*)
+       let tv = pgresult_to_string (c#exec ("select id from registry where uri='" ^ (List.hd xres) ^ "'")) in
+        let _ = print_endline ("DEBUG (use.ml): " ^ tv) in
+        let qq = "select uri, context from t" ^ tv ^ " where back_for='" ^ usek ^ "'" in
+         let res = c#exec qq in
+          (List.map
+           (fun l -> [List.hd l] @ List.tl xres @ List.tl l)
+           res#get_list
+          )
+          @
+          parziale
+     )
+     []
+     (List.tl alist)
+    )
+  in
+   (*let _ = print_endline (string_of_float (Unix.time () -. t)); flush stdout in*)
+
+ *)
+let module S = Mathql_semantics in
+let _ = print_string ("USE ")
+and t = Unix.time () in
+let result =
  let c = pgc () in
-  List.fold_left
-   (fun parziale xres ->
-    let r1 = helm_property_id usek
-    and r2 = helm_property_id "position"
-    and r3 = helm_property_id "occurrence"
-    in
-     let qq = "select distinct t" ^ r3 ^ ".att1, t" ^ r2 ^ ".att1 " ^
-      "from t" ^ r3 ^ ", t" ^ r2 ^ ", t" ^ r1 ^ " " ^
-      "where " ^ "t" ^ r1 ^ ".att0 = '" ^ (List.hd xres) ^ "' and t" ^ r1 ^
-      ".att1 = t" ^ r2 ^ ".att0 and t" ^ r1 ^ ".att1 = t" ^ r3 ^
-      ".att0 order by t" ^ r3 ^ ".att1 asc"
+  Sort.list
+   (fun {S.uri = uri1} {S.uri = uri2} -> uri1 < uri2)
+   (List.fold_left
+    (fun parziale {S.uri = uri ; S.attributes = attributes} ->
+     print_string uri ;
+     (* RSSDB
+     let r1 = helm_property_id usek
+     and r2 = helm_property_id "position"
+     and r3 = helm_property_id "occurrence"
      in
-     (*let _ = print_endline ("use: " ^ qq) in*)
-     let res = c#exec qq in
-      parziale
-      @
-      if not (List.mem asvar (List.tl (List.hd alist))) then
-       List.map
-        (fun l -> [List.hd l] @ List.tl xres @ List.tl l)
-        res#get_list
-      else
-       List.map
-        (fun l ->
-         let t =
-          match xres with
-             hd::tl -> (List.hd l)::tl
-          |  [] -> []
-         in
-         List.map
-           snd
-          (Utility.set_assoc
-           asvar
-           (List.hd (List.tl l))
-           (List.combine (List.hd alist) t)
-          )
-        )
-        (List.find_all
-         (fun l ->
-          let currv =
-           List.hd (List.tl l)
-          and xresv =
-           try (
-            List.assoc
-             asvar
-             (List.combine
-              (List.tl (List.hd alist))
-              (List.tl xres)
-             )
-           ) with
-            Not_found -> ""
-          in
-           xresv = "" or xresv = currv
-         )
-         res#get_list
-        )
+      let qq = "select distinct t" ^ r3 ^ ".att1, t" ^ r2 ^ ".att1 " ^
+       "from t" ^ r3 ^ ", t" ^ r2 ^ ", t" ^ r1 ^ " " ^
+       "where " ^ "t" ^ r1 ^ ".att0 = '" ^ (List.hd xres) ^ "' and t" ^ r1 ^
+       ".att1 = t" ^ r2 ^ ".att0 and t" ^ r1 ^ ".att1 = t" ^ r3 ^
+       ".att0 order by t" ^ r3 ^ ".att1 asc"
+      *)
+      let tv =
+       pgresult_to_string
+        (c#exec ("select id from registry where uri='" ^ uri ^ "'"))
+      in
+      let qq =
+       "select uri, context from t" ^ tv ^ " where back_for='" ^ usek ^
+        "' order by uri asc"
+      in
+      let res = c#exec qq in
+       (List.map
+        (function
+            [uri;context] -> {S.uri = uri ; S.attributes = [asvar, context] ; S.extra = ""}
+          | _ -> assert false
+        ) res#get_list
+       ) @
+       parziale
+    ) [] alist
    )
-   [ (List.hd alist)
-     @
-     if not (List.mem asvar (List.tl (List.hd alist))) then
-      [asvar]
-     else
-      []
-   ]
-   (List.tl alist)
+in
+print_string (" = " ^ string_of_int (List.length result) ^ ": ") ; 
+print_endline (string_of_float (Unix.time () -. t) ^ "s") ;
+flush stdout ;
+   result
 ;;