X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Focaml%2Fmathql_interpreter%2Fpattern.ml;h=86ef522b92e791fddeebd4ac24f5649035024679;hb=a96d91e43e25d3d5b36e7c3646831bcf8a401c9d;hp=576226008de0a5463c861cd6a076a72ee2723368;hpb=f22ab48f16bbebd949368ae20574c80d757b1698;p=helm.git

diff --git a/helm/ocaml/mathql_interpreter/pattern.ml b/helm/ocaml/mathql_interpreter/pattern.ml
index 576226008..86ef522b9 100644
--- a/helm/ocaml/mathql_interpreter/pattern.ml
+++ b/helm/ocaml/mathql_interpreter/pattern.ml
@@ -23,38 +23,25 @@
  * http://www.cs.unibo.it/helm/.
  *)
 
-(*
- * implementazione del comando PATTERN
- *)
-
 open Dbconn;;
 open Utility;;
-open Eval;;
-open Mathql_semantics;;
 
-let pattern_ex (apreamble, apattern, afragid) =
- let c = pgc () in
-  (*let _ = print_string ("USE ")
-  and t = Unix.time () 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*)
-   (*PRE-CLAUDIO
-   let qq = "select uri from registry where uri " ^ (pattern_match apreamble apattern afragid) ^ " order by registry.uri asc" in
-    let result = 
-     let res =
-      c#exec (qq)
-     in
-      [["retVal"]] @ List.map (fun l -> [l]) (pgresult_to_string_list res)*)
-   let qq = "select uri from registry where uri " ^ (pattern_match (apreamble, apattern, afragid)) ^ " order by registry.uri asc" in
-print_endline qq ; flush stderr ;
-   (*let _ = print_endline qq in*)
-    let res =
-     c#exec (qq)
-    in
-(* PRE-CLAUDIO
-     (*let _ = print_endline (string_of_float (Unix.time () -. t)); flush stdout in*)
-      result*)
-     List.map
-      (function uri -> {uri = uri ; attributes = [] ; extra = ""})
-      (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
+             let res = c#exec (qq) in
+             List.map (function uri -> (uri,[])) (pgresult_to_string_list res)
+             in
+	     cat result (pattern_ex tl)
+;;
+