1 (* Copyright (C) 2004, 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.
12 * HELM is distributed in the hope that it will be useful,
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://helm.cs.unibo.it/
32 let execute_insert dbd uri (sort_cols, rel_cols, obj_cols) =
34 List.fold_left (fun s l -> match l with
35 | [`String a; `String b; `Int c; `String d] ->
36 sprintf "(\"%s\", \"%s\", %d, \"%s\")" a b c d :: s
41 List.fold_left (fun s l -> match l with
42 | [`String a; `String b; `Int c] ->
43 sprintf "(\"%s\", \"%s\", %d)" a b c :: s
47 let obj_tuples = List.fold_left (fun s l -> match l with
48 | [`String a; `String b; `String c; `Int d] ->
49 sprintf "(\"%s\", \"%s\", \"%s\", %d)" a b c d :: s
50 | [`String a; `String b; `String c; `Null] ->
51 sprintf "(\"%s\", \"%s\", \"%s\", %s)" a b c "NULL" :: s
55 if sort_tuples <> [] then
58 sprintf "INSERT %s VALUES %s;" (sort_tbl ()) (String.concat "," sort_tuples)
60 ignore (HMysql.exec dbd query_sort)
62 if rel_tuples <> [] then
65 sprintf "INSERT %s VALUES %s;" (rel_tbl ()) (String.concat "," rel_tuples)
67 ignore (HMysql.exec dbd query_rel)
69 if obj_tuples <> [] then
72 sprintf "INSERT %s VALUES %s;" (obj_tbl ()) (String.concat "," obj_tuples)
74 ignore (HMysql.exec dbd query_obj)
78 let count_distinct position l =
79 MetadataConstraints.UriManagerSet.cardinal
80 (List.fold_left (fun acc d ->
84 | `Obj (name,`InConclusion)
85 | `Obj (name,`MainConclusion _ ) ->
86 MetadataConstraints.UriManagerSet.add name acc
90 | `Obj (name,`InHypothesis)
91 | `Obj (name,`MainHypothesis _) ->
92 MetadataConstraints.UriManagerSet.add name acc
96 | `Obj (name,`InBody) -> acc
97 | `Obj (name,_) -> MetadataConstraints.UriManagerSet.add name acc
99 ) MetadataConstraints.UriManagerSet.empty l)
101 let insert_const_no ~dbd l =
104 (fun acc (uri,_,metadata) ->
105 let no_concl = count_distinct `Conclusion metadata in
106 let no_hyp = count_distinct `Hypothesis metadata in
107 let no_full = count_distinct `Statement metadata in
108 (sprintf "(\"%s\", %d, %d, %d)"
109 (UriManager.string_of_uri uri) no_concl no_hyp no_full) :: acc
112 sprintf "INSERT INTO %s VALUES %s" (count_tbl ()) (String.concat "," data)
114 ignore (HMysql.exec dbd insert)
116 let insert_name ~dbd l =
119 (fun acc (uri,name,_) ->
120 (sprintf "(\"%s\", \"%s\")" (UriManager.string_of_uri uri) name) :: acc
123 sprintf "INSERT INTO %s VALUES %s" (name_tbl ()) (String.concat "," data)
125 ignore (HMysql.exec dbd insert)
128 MetadataPp.t list list * MetadataPp.t list list * MetadataPp.t list list
130 (* TODO ZACK: verify if an object has already been indexed *)
131 let already_indexed _ = false
133 (***** TENTATIVE HACK FOR THE DB SLOWDOWN - BEGIN *******)
134 let analyze_index = ref 0
135 let eventually_analyze dbd =
137 if !analyze_index > 30 then
139 let analyze t = "OPTIMIZE TABLE " ^ t ^ ";" in
141 (fun table -> ignore (HMysql.exec dbd (analyze table)))
142 [name_tbl (); rel_tbl (); sort_tbl (); obj_tbl(); count_tbl()]
145 (***** TENTATIVE HACK FOR THE DB SLOWDOWN - END *******)
147 let index_obj ~dbd ~uri =
148 if not (already_indexed uri) then begin
149 eventually_analyze dbd;
150 let metadata = MetadataExtractor.compute_obj uri in
151 let uri = UriManager.string_of_uri uri in
152 let columns = MetadataPp.columns_of_metadata metadata in
153 execute_insert dbd uri (columns :> columns);
154 insert_const_no ~dbd metadata;
155 insert_name ~dbd metadata
159 let tables_to_clean =
160 [sort_tbl; rel_tbl; obj_tbl; name_tbl; count_tbl]
162 let clean ~(dbd:HMysql.dbd) =
163 let owned_uris = (* list of uris in list-of-columns format *)
164 let query = sprintf "SELECT source FROM %s" (name_tbl ()) in
165 let result = HMysql.exec dbd query in
166 let uris = HMysql.map result (fun cols ->
169 | None -> assert false) in
170 (* and now some stuff to remove #xpointers and duplicates *)
175 sprintf "DELETE FROM %s WHERE source LIKE \"%s%%\"" (tbl ()) s
178 (fun source_col -> ignore (HMysql.exec dbd (query source_col)))
181 List.iter del_from tables_to_clean;
184 let unindex ~dbd ~uri =
185 let uri = UriManager.string_of_uri uri in
188 sprintf "DELETE FROM %s WHERE source LIKE \"%s%%\"" (tbl ()) uri
190 ignore (HMysql.exec dbd (query tbl))
192 List.iter del_from tables_to_clean