-(* 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://cs.unibo.it/helm/.
- *)
-
-(******************************************************************************)
-(* *)
-(* PROJECT HELM *)
-(* *)
-(* Ferruccio Guidi <fguidi@cs.unibo.it> *)
-(* 30/04/2002 *)
-(* *)
-(* *)
-(******************************************************************************)
-
-(* Query issuing functions **************************************************)
-
-
-
-type uri = string
-type position = string
-type depth = int option
-type sort = string
-
-type r_obj = (uri * position * depth)
-type r_rel = (position* depth)
-type r_sort = (position* depth * sort)
-
-type must_restrictions = (r_obj list * r_rel list * r_sort list)
-type only_restrictions =
- (r_obj list option * r_rel list option * r_sort list option)
-
-exception Discard
-
-let nl = " <p>\n"
-
-let query_num = ref 1
-
-let log_file = ref ""
-
-let confirm_query = ref (fun _ -> true)
-
-let info = ref []
-
-let set_log_file f =
- log_file := f
-
-let set_confirm_query f =
- confirm_query := f
-
-let get_query_info () = ! info
-
-let execute_query query =
- let module Util = MQueryUtil in
- let mode = [Open_wronly; Open_append; Open_creat; Open_text] in
- let perm = 64 * 6 + 8 * 6 + 4 in
- let time () =
- let lt = Unix.localtime (Unix.time ()) in
- "NEW LOG: " ^
- string_of_int (lt.Unix.tm_mon + 1) ^ "-" ^
- string_of_int (lt.Unix.tm_mday + 1) ^ "-" ^
- string_of_int (lt.Unix.tm_year + 1900) ^ " " ^
- string_of_int (lt.Unix.tm_hour) ^ ":" ^
- string_of_int (lt.Unix.tm_min) ^ ":" ^
- string_of_int (lt.Unix.tm_sec)
- in
- let log q r =
- let och = open_out_gen mode perm ! log_file in
- let out = output_string och in
- if ! query_num = 1 then out (time () ^ nl);
- out ("Query: " ^ string_of_int ! query_num ^ nl); Util.text_of_query out q nl;
- out ("Result:" ^ nl); Util.text_of_result out r nl;
- flush och
- in
- let execute q =
- let r = Mqint.execute q in
- if ! log_file <> "" then log q r;
- info := string_of_int ! query_num :: ! info;
- incr query_num;
- r
- in
- if ! confirm_query query then execute query else raise Discard
-
-(* Query building functions ************************************************)
-
-let locate s =
- let module M = MathQL in
- let q =
- M.Ref (M.Property true M.RefineExact ("objectName", []) (M.Const [s]))
- in
- execute_query q
-
-let searchPattern must_use can_use =
- let module M = MathQL in
- let in_path s = (s, []) in
- let assign v p = (in_path v, in_path p) in
-
-(* can restrictions *)
-
- let (cr_o,cr_r,cr_s) = can_use in
-
- let uri_of_entry (r, p, d) = r in
-
- let universe =
- match cr_o with
- None -> []
- | Some cr_o -> List.map uri_of_entry cr_o
- in
-
- let tfst (a,b,c) = a in
- let tsnd (a,b,c) = b in
- let trd (a,b,c) = c in
-
- let to_int_list l d =
- match d with
- None -> l
- | Some d -> l@[d]
- in
-
- let opos =
- match cr_o with
- None -> []
- | Some cr_o -> (List.map tsnd cr_o) in
-
- let odep =
- match cr_o with
- None -> []
- | Some cr_o -> List.map trd cr_o
- (* let odep_option_list = List.map trd cr_o in
- let lo_dep_int = List.fold_left to_int_list [] odep_option_list in
- List.map string_of_int lo_dep_int*)
- in
- print_string "#### LUNGHEZZA ODEP: "; print_int (List.length odep); flush stdout;
- print_endline"";
- let rpos =
- match cr_r with
- None -> []
- | Some cr_r -> (List.map fst cr_r) in
-
- let rdep =
- match cr_r with
- None -> []
- | Some cr_r -> List.map snd cr_r
- (* let rdep_option_list = List.map snd cr_r in
- let lr_dep_int = List.fold_left to_int_list [] rdep_option_list in
- List.map string_of_int lr_dep_int *)
- in
-
-
- let spos =
- match cr_s with
- None -> []
- | Some cr_s -> (List.map tfst cr_s) in
-
-
- let sdep =
- match cr_s with
- None -> []
- | Some cr_s -> List.map tsnd cr_s
- (* let sdep_option_list = List.map tsnd cr_s in
- let ls_dep_int = List.fold_left to_int_list [] sdep_option_list in
- List.map string_of_int ls_dep_int*)
- in
-
-
- let sor =
- match cr_s with
- None -> []
- | Some cr_s -> List.map trd cr_s in
-
- (* let q_where_obj = function
- Some l ->
- if odep = [] then
- M.Sub
- (M.RefOf
- (M.Select
- ("uri",
- M.Relation (false, M.RefineExact, in_path "refObj", M.Ref (M.RefOf (M.RVar "uri0")), [assign "pos" "position"]),
- M.Ex ["uri"]
- (M.Meet (M.VVar "obj_positions", M.Record ("uri", in_path "pos"))))),
- M.VVar "universe")
- else
- M.Sub
- (M.RefOf
- (M.Select
- ("uri",
- M.Relation
- (false, M.RefineExact, in_path "refObj",
- M.Ref (M.RefOf (M.RVar "uri0")),
- [assign "p" "position"; assign "d" "depth"]
- ),
- M.Ex ["uri"]
- (M.And
- ((M.Meet(M.VVar "obj_positions",M.Record("uri",in_path "p"))),
- (M.Meet(M.VVar "obj_depths", M.Record("uri",in_path "d")))))
- )
- ),
- M.VVar "universe"
- )
-
- | None -> M.True
- in*)
-
-
-
- let q_where_obj n = function
- Some l ->
- let rec q_ex n = function
- [] -> M.True
- | [(u,p,None)] ->
- M.Meet (M.VVar ("obj_position" ^ string_of_int n), M.Record ("uri", in_path "p"))
-
- | [(u,p,d)] ->
- print_string "@@@@@ IN-WHERE-OBJ"; flush stdout;
- print_endline"";
- M.And
- (M.Meet(M.VVar ("obj_position" ^ string_of_int n),M.Record("uri",in_path "p")),
- M.Meet(M.VVar ("obj_depth" ^ string_of_int n), M.Record("uri",in_path "d")))
- | (u,p,None)::tl ->
- M.Or
- (M.Meet (M.VVar ("obj_position" ^ string_of_int n), M.Record ("uri", in_path "p")),
- q_ex (n+1) tl)
- | (u,p,d)::tl ->
- print_string "@@@@@ IN-WHERE-OBJ"; flush stdout;
- print_endline"";
- M.Or
- ((M.And
- ((M.Meet(M.VVar ("obj_position" ^ string_of_int n),M.Record("uri",in_path "p"))),
- (M.Meet(M.VVar ("obj_depth" ^ string_of_int n), M.Record("uri",in_path "d"))))),
- q_ex (n+1) tl)
- in
- M.Sub
- (M.RefOf
- (M.Select
- ("uri",
- M.Relation
- (false, M.RefineExact, in_path "refObj",
- M.Ref (M.RefOf (M.RVar "uri0")),
- [assign "p" "position"; assign "d" "depth"]
- ),
- M.Ex ["uri"]
- (q_ex 1 l))),
- M.VVar "universe")
- | None -> M.True
- in
-
-
-
-
- let rec q_where_rel n cr_r= (*function*)
- (* Some l ->*)
- let q0 =
- M.Sub
- (M.Property
- (false, M.RefineExact, ("refRel", ["position"]),
- M.RefOf(M.RVar "uri0")),
- M.VVar ("rel_position" ^ string_of_int n))
- in
- match cr_r with
- Some [] -> M.True
- | Some [(p,None)] -> q0
- | Some [(p,d)] ->
- M.And
- (q0,
- M.Sub
- (M.Property
- (false, M.RefineExact, ("refRel", ["depth"]),
- M.RefOf(M.RVar "uri0")),
- M.VVar ("rel_depth" ^ string_of_int n)))
- | Some ((p,None)::tl) ->
- M.Or
- (q0,
- q_where_rel (n+1) (Some tl))
- | Some ((p,d)::tl) ->
- M.Or
- (M.And
- (q0,
- M.Sub
- (M.Property
- (false, M.RefineExact, ("refRel", ["depth"]),
- M.RefOf(M.RVar "uri0")),
- M.VVar ("rel_depth" ^ string_of_int n))),
- q_where_rel (n+1) (Some tl))
- | None -> M.True
- in
-
- let rec q_where_sort n cr_s = (*function *)
- (* Some l ->*)
- let q0 =
- M.And
- (M.Sub
- (M.Property
- (false, M.RefineExact, ("refSort", ["position"]),
- M.RefOf(M.RVar "uri0")
- ),
- M.VVar ("sort_position" ^ string_of_int n)),
- M.Sub
- (M.Property
- (false, M.RefineExact, ("refSort", ["sort"]),
- M.RefOf(M.RVar "uri0")),
- M.VVar ("sort" ^ string_of_int n)))
- in
- match cr_s with
- Some [] -> M.True
- | Some [(p,None,s)] -> q0
-
- | Some [(p,d,s)] ->
- M.And
- (q0,
- M.Sub
- (M.Property
- (false, M.RefineExact, ("refSort", ["depth"]),
- M.RefOf(M.RVar "uri0")),
- M.VVar ("sort_depth" ^ string_of_int n)))
-
- | Some ((p,None,s)::tl) ->
- M.Or
- (q0,
- q_where_sort (n+1) (Some tl))
-
- | Some((p,d,s)::tl) ->
- M.Or
- (M.And
- (q0,
- M.Sub
- (M.Property
- (false, M.RefineExact, ("refSort", ["depth"]),
- M.RefOf(M.RVar "uri0")),
- M.VVar ("sort_depth" ^ string_of_int n))),
- q_where_sort (n+1) (Some tl))
- | None -> M.True
- in
-
-
-
-
- let q_where cr =
- let (cr_o,cr_r,cr_s) = cr in
- M.And(M.And(q_where_obj 1 cr_o, (q_where_rel 1 cr_r)), (q_where_sort 1 cr_s))
-
- in
-
-(* must restrictions *)
-
- let build_select_obj (r, pos, dep) =
- match dep with
- None -> M.Select
- ("uri",
- M.Relation (false, M.RefineExact, ("backPointer", []),
- M.Ref (M.Const [r]), [assign "p" "position"]),
- M.Ex ["uri"]
- ((M.Sub (M.Const [pos], M.Record ("uri", in_path "p")))))
- | Some dep -> let string_dep = string_of_int dep in
- M.Select
- ("uri",
- M.Relation (false, M.RefineExact, ("backPointer", []),
- M.Ref (M.Const [r]), [assign "p" "position";assign "d" "depth"]),
- M.Ex ["uri"]
- (M.And
- ((M.Sub (M.Const [pos], M.Record ("uri", in_path "p"))),
- (M.Sub (M.Const [string_dep], M.Record ("uri", in_path "d"))))))
- in
-
- let build_select_rel (pos, dep) =
- match dep with
- None -> M.Select
- ("uri",
- M.Relation (true, M.RefineExact, ("refRel", []), M.Ref (M.Const [""]), [assign "p" "position";assign "d" "depth"]),
- M.Ex ["uri"]
- (M.Sub (M.Const [pos], M.Record ("uri", in_path "p"))))
- | Some dep -> let string_dep = string_of_int dep in
- M.Select
- ("uri",
- M.Relation (true, M.RefineExact, ("refRel", []), M.Ref (M.Const [""]), [assign "p" "position";assign "d" "depth"]),
- M.Ex ["uri"]
- (M.And
- ((M.Sub (M.Const [pos], M.Record ("uri", in_path "p"))),
- (M.Sub (M.Const [string_dep], M.Record ("uri", in_path "d"))))))
- in
-
- let build_select_sort (pos, dep, sor) =
- match dep with
- None -> M.Select
- ("uri",
- M.Relation (true, M.RefineExact, ("refSort", []), M.Ref (M.Const [""]), [assign "p" "position";assign "d" "depth";assign "s" "sort"]),
- M.Ex ["uri"]
- (M.And
- ((M.Sub (M.Const [pos], M.Record ("uri", in_path "p"))),
- (M.Sub (M.Const [sor], M.Record ("uri", in_path "s"))))))
-
- | Some dep -> let string_dep = string_of_int dep in
- M.Select
- ("uri",
- M.Relation (true, M.RefineExact, ("refSort", []), M.Ref (M.Const [""]), [assign "p" "position";assign "d" "depth";assign "s" "sort"]),
- M.Ex ["uri"]
- (M.And
- ((M.And
- ((M.Sub (M.Const [pos], M.Record ("uri", in_path "p"))),
- (M.Sub (M.Const [string_dep], M.Record ("uri", in_path "d"))))),
- (M.Sub (M.Const [sor], M.Record ("uri", in_path "s"))))))
- in
-
- let rec build_intersect_obj = function
- [] -> M.Pattern (M.Const ["[.]*"])
- | [hd] -> build_select_obj hd
- | hd :: tl -> M.Intersect (build_select_obj hd, build_intersect_obj tl)
- in
-
- let rec build_intersect_rel = function
- [] -> M.Ref(M.Const [])
- | [hd] -> build_select_rel hd
- | hd :: tl -> M.Intersect (build_select_rel hd, build_intersect_rel tl)
- in
-
- let rec build_intersect_sort = function
- [] -> M.Ref(M.Const [])
- | [hd] -> build_select_sort hd
- | hd :: tl -> M.Intersect (build_select_sort hd, build_intersect_sort tl)
- in
-
- let build_intersect = function
-(* let tostring_sort (a,b,c) =
- let b1 = string_of_int b in
- (a,b1,c)
- in
- let tostring_rel (a,b) =
- let b1 = string_of_int b in
- (a,b1)
- in*)
-
-(* let (l1,l2,l3) = must in
- match (l1,l2,l3) with *)
- l1,[],[] -> build_intersect_obj l1
- | [],l2,[] -> (*let lrel = List.map tostring_rel l2 in*)
- build_intersect_rel l2
- | [],[],l3 ->(* let lsort = List.map tostring_sort l3 in*)
- build_intersect_sort l3
- | l1,l2,[] -> (*let lrel = List.map tostring_rel l2 in*)
- M.Intersect (build_intersect_obj l1, build_intersect_rel l2)
- | l1,[],l3 ->(* let lsort = List.map tostring_sort l3 in *)
- M.Intersect (build_intersect_obj l1, build_intersect_sort l3)
- | [],l2,l3 ->(* let lrel = List.map tostring_rel l2 in
- let lsort = List.map tostring_sort l3 in*)
- M.Intersect (build_intersect_rel l2, build_intersect_sort l3)
- | l1,l2,l3 ->(* let lrel = List.map tostring_rel l2 in
- let lsort = List.map tostring_sort l3 in *)
- M.Intersect (M.Intersect (build_intersect_obj l1, build_intersect_rel l2), build_intersect_sort l3)
- in
-
- let q_in = build_intersect must_use in
- let q_select = M.Select ("uri0", q_in, q_where can_use) in
-
-(* variables for can restrictions *)
-
- let q_let_u = M.LetVVar ("universe", M.Const universe, q_select) in
-
- let rec q_let_s sor n =
- match sor with
- [] -> q_let_u
- | [s] -> M.LetVVar ("sort" ^ (string_of_int n), M.Const [s], q_let_u)
- | s::tl -> M.LetVVar ("sort" ^ (string_of_int n), M.Const [s], q_let_s tl (n+1))
- in
-
-(* let q_let_s = M.LetVVar ("sorts", M.Const sor, q_let_u) in *)
-
- let rec q_let_ds sdep n =
- match sdep with
- []
- | [None] -> q_let_s sor 1
- | (None)::tl -> q_let_ds tl (n+1)
- | [Some d] -> M.LetVVar ("sort_depth" ^ (string_of_int n), M.Const [(string_of_int d)], q_let_s sor 1)
- | (Some d)::tl -> M.LetVVar ("sort_depth" ^ (string_of_int n), M.Const [(string_of_int d)], q_let_ds tl (n+1))
- in
-
-(* let q_let_ds = M.LetVVar ("sort_depths", M.Const sdep, q_let_s) in *)
-
- let rec q_let_dr rdep n =
- match rdep with
- []
- | [None] -> q_let_ds sdep 1
- | (None)::tl -> q_let_dr tl (n+1)
- | [Some d] -> M.LetVVar ("rel_depth" ^ (string_of_int n), M.Const [(string_of_int d)], q_let_ds sdep 1)
- | (Some d)::tl -> M.LetVVar ("rel_depth" ^ (string_of_int n), M.Const [(string_of_int d)], q_let_dr tl (n+1))
- in
-
-
- (*let q_let_dr = M.LetVVar ("rel_depths", M.Const rdep, q_let_ds) in*)
-
- let rec q_let_do odep n =
- match odep with
- []
- | [None] -> q_let_dr rdep 1
- | (None)::tl -> q_let_do tl (n+1)
- | [Some d] -> M.LetVVar ("obj_depth" ^ (string_of_int n), M.Const [(string_of_int d)], q_let_dr rdep 1)
- | (Some d)::tl -> M.LetVVar ("obj_depth" ^ (string_of_int n), M.Const [(string_of_int d)], q_let_do tl (n+1))
- in
-
-
-(* let q_let_do = M.LetVVar ("obj_depths", M.Const odep, q_let_dr) in *)
-
-
- let rec q_let_ps spos n =
- match spos with
- [] -> q_let_do odep 1
- | [p] -> M.LetVVar ("sort_position" ^ (string_of_int n), M.Const [p], q_let_do odep 1)
- | p::tl -> M.LetVVar ("sort_position" ^ (string_of_int n), M.Const [p], q_let_ps tl (n+1))
- in
-
-
-(* let q_let_ps = M.LetVVar ("sort_positions", M.Const spos, q_let_do) in *)
-
-
- let rec q_let_pr rpos n =
- match rpos with
- [] -> q_let_ps spos 1
- | [p] -> M.LetVVar ("rel_position" ^ (string_of_int n), M.Const [p], q_let_ps spos 1)
- | p::tl -> M.LetVVar ("rel_position" ^ (string_of_int n), M.Const [p], q_let_pr tl (n+1))
- in
-
-
-
-(* let q_let_pr = M.LetVVar ("rel_positions", M.Const rpos, q_let_ps) in *)
-
- let rec q_let_po opos n =
- match opos with
- [] -> q_let_pr rpos 1
- | [p] -> M.LetVVar ("obj_position" ^ (string_of_int n), M.Const [p], q_let_pr rpos 1)
- | p::tl -> M.LetVVar ("obj_position" ^ (string_of_int n), M.Const [p], q_let_po tl (n+1))
- in
-
- (*let q_let_po = M.LetVVar ("obj_positions", M.Const opos, q_let_pr) in*)
-
-print_endline "### "; MQueryUtil.text_of_query print_string (q_let_po opos 1) "\n"; flush stdout;
- execute_query (q_let_po opos 1)