1 (* Copyright (C) 2000, HELM Team.
3 * This file is part of HELM, an Hypertextual, Electronic
4 * Library of Mathematics, developed at the Computer Science
5 * Department, University of Bologna, Italy.
7 * HELM is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
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13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with HELM; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
22 * For details, see the HELM World-Wide-Web page,
23 * http://cs.unibo.it/helm/.
27 * implementazione dei comandi USE/USED BY
34 * implementazione dei comandi USE/USED BY
37 * alist: string list list; lista su cui eseguire il comando USE/USED BY
38 * asvar: string; nome della variabile del comando use
39 * usek: string; nome della tabella in cui ricercare le occorrenze;
40 * la distinzione fra l'esecuzione del comando USE e USED BY
41 * sta nell'utilizzo della tabella 'backPointer' per USE
42 * e 'refObj' per USED BY
44 * output: string list list; lista su cui e' stato eseguito il
47 let use_ex alist asvar usek =
48 let _ = print_string ("USE ")
49 and t = Unix.time () in
53 [ (List.hd alist) @ [asvar] ]
56 (fun l m -> List.hd l < List.hd m)
59 (*let r1 = helm_property_id usek
60 and r2 = helm_property_id "position"
61 and r3 = helm_property_id "occurrence"
63 let qq = "select distinct t" ^ r3 ^ ".att1, t" ^ r2 ^ ".att1 " ^
64 "from t" ^ r3 ^ ", t" ^ r2 ^ ", t" ^ r1 ^ " " ^
65 "where " ^ "t" ^ r1 ^ ".att0 = '" ^ (List.hd xres) ^ "' and t" ^ r1 ^
66 ".att1 = t" ^ r2 ^ ".att0 and t" ^ r1 ^ ".att1 = t" ^ r3 ^
67 ".att0 order by t" ^ r3 ^ ".att1 asc"*)
68 let tv = pgresult_to_string (c#exec ("select id from registry where uri='" ^ (List.hd xres) ^ "'")) in
69 let qq = "select uri, context from t" ^ tv ^ " where back_for='" ^ usek ^ "'"
71 let res = c#exec qq in
73 (fun l -> [List.hd l] @ List.tl xres @ List.tl l)
83 let _ = print_endline (string_of_float (Unix.time () -. t)); flush stdout in