+++ /dev/null
-(* Copyright (C) 2000, HELM Team.
- *
- * This file is part of HELM, an Hypertextual, Electronic
- * Library of Mathematics, developed at the Computer Science
- * Department, University of Bologna, Italy.
- *
- * HELM is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * HELM is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with HELM; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- * MA 02111-1307, USA.
- *
- * For details, see the HELM World-Wide-Web page,
- * http://www.cs.unibo.it/helm/.
- *)
-
-(*
- * gestione della connessione al database
- *)
-
-(*
- * le eccezioni lanciate dalle funzioni init e pgc sono
- * definite nel modulo Mathql
- *)
-open MathQL;;
-
-exception InvalidURI of string
-exception ConnectionFailed of string
-exception InvalidConnection
-
-(*
- * connessione al db
- *)
-let conn = ref None
-
-(*
- * controllo sulla connessione
- *)
-let pgc () =
- match !conn with
- None -> raise InvalidConnection
- | Some c -> c
-;;
-
-(*
- * inizializzazione della connessione
- *
- * TODO
- * passare i parametri della connessione come argomento di init
- *)
-let init connection_param =
- try (
- conn := Some (new Postgres.connection connection_param);
- ) with
- _ -> raise (ConnectionFailed ("init: " ^ connection_param))
-;;
-
-(*
- * chiusura della connessione
- *)
-let close () =
- match !conn with
- None -> ()
- | Some c -> c#close
-;;