1 package C4::SearchMarc;
3 # Copyright 2000-2002 Katipo Communications
5 # This file is part of Koha.
7 # Koha is free software; you can redistribute it and/or modify it under the
8 # terms of the GNU General Public License as published by the Free Software
9 # Foundation; either version 2 of the License, or (at your option) any later
12 # Koha is distributed in the hope that it will be useful, but WITHOUT ANY
13 # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
14 # A PARTICULAR PURPOSE. See the GNU General Public License for more details.
16 # You should have received a copy of the GNU General Public License along with
17 # Koha; if not, write to the Free Software Foundation, Inc., 59 Temple Place,
18 # Suite 330, Boston, MA 02111-1307 USA
26 use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS);
28 # set the version for version checking
33 C4::Search - Functions for searching the Koha MARC catalog
39 my ($count, @results) = catalogsearch();
43 This module provides the searching facilities for the Koha MARC catalog
45 C<&catalogsearch> is a front end to all the other searches. Depending
46 on what is passed to it, it calls the appropriate search function.
55 @EXPORT = qw(&catalogsearch &findseealso);
57 # make all your functions, whether exported or not;
60 my ($dbh, $fields) = @_;
61 my $tagslib = MARCgettagslib ($dbh,1);
62 for (my $i=0;$i<=$#{$fields};$i++) {
63 my ($tag) =substr(@$fields[$i],1,3);
64 my ($subfield) =substr(@$fields[$i],4,1);
65 @$fields[$i].=','.$tagslib->{$tag}->{$subfield}->{seealso} if ($tagslib->{$tag}->{$subfield}->{seealso});
69 # marcsearch : search in the MARC biblio table.
70 # everything is choosen by the user : what to search, the conditions...
73 my ($dbh, $tags, $and_or, $excluding, $operator, $value, $offset,$length,$orderby) = @_;
74 # build the sql request. She will look like :
76 # from marc_subfield_table as m1, marc_subfield_table as m2
77 # where m1.bibid=m2.bibid and
78 # (m1.subfieldvalue like "Des%" and m2.subfieldvalue like "27%")
82 my @normal_and_or = ();
83 my @normal_operator = ();
84 my @normal_value = ();
85 # Extracts the NOT statements from the list of statements
88 my @not_operator = ();
91 $orderby = "biblio.title" unless $orderby;
92 for(my $i = 0 ; $i <= $#{$value} ; $i++)
94 if(@$excluding[$i]) # NOT statements
97 if(@$operator[$i] eq "contains")
99 foreach my $word (split(/ /, @$value[$i])) # if operator is contains, splits the words in separate requests
101 unless (C4::Context->stopwords->{uc($word)}) { #it's NOT a stopword => use it. Otherwise, ignore
102 push @not_tags, @$tags[$i];
103 push @not_and_or, "or"; # as request is negated, finds "foo" or "bar" if final request is NOT "foo" and "bar"
104 push @not_operator, @$operator[$i];
105 push @not_value, $word;
111 push @not_tags, @$tags[$i];
112 push @not_and_or, "or"; # as request is negated, finds "foo" or "bar" if final request is NOT "foo" and "bar"
113 push @not_operator, @$operator[$i];
114 push @not_value, @$value[$i];
117 else # NORMAL statements
119 if(@$operator[$i] eq "contains") # if operator is contains, splits the words in separate requests
121 foreach my $word (split(/ /, @$value[$i]))
123 unless (C4::Context->stopwords->{uc($word)}) { #it's NOT a stopword => use it. Otherwise, ignore
124 my $tag = substr(@$tags[$i],0,3);
125 my $subf = substr(@$tags[$i],3,1);
126 push @normal_tags, @$tags[$i];
127 push @normal_and_or, "and"; # assumes "foo" and "bar" if "foo bar" is entered
128 push @normal_operator, @$operator[$i];
129 push @normal_value, $word;
135 push @normal_tags, @$tags[$i];
136 push @normal_and_or, @$and_or[$i];
137 push @normal_operator, @$operator[$i];
138 push @normal_value, @$value[$i];
143 # Finds the basic results without the NOT requests
144 my ($sql_tables, $sql_where1, $sql_where2) = create_request($dbh,\@normal_tags, \@normal_and_or, \@normal_operator, \@normal_value);
148 $sth = $dbh->prepare("select distinct m1.bibid from biblio,biblioitems,marc_biblio,$sql_tables where biblio.biblionumber=marc_biblio.biblionumber and biblio.biblionumber=biblioitems.biblionumber and m1.bibid=marc_biblio.bibid and $sql_where2 and ($sql_where1) order by $orderby");
149 warn "Q2 : select distinct m1.bibid from biblio,biblioitems,marc_biblio,$sql_tables where biblio.biblionumber=marc_biblio.biblionumber and biblio.biblionumber=biblioitems.biblionumber and m1.bibid=marc_biblio.bibid and $sql_where2 and ($sql_where1) order by $orderby";
151 $sth = $dbh->prepare("select distinct m1.bibid from biblio,biblioitems,marc_biblio,$sql_tables where biblio.biblionumber=marc_biblio.biblionumber and biblio.biblionumber=biblioitems.biblionumber and m1.bibid=marc_biblio.bibid and $sql_where1 order by $orderby");
152 warn "Q : select distinct m1.bibid from biblio,biblioitems,marc_biblio,$sql_tables where biblio.biblionumber=marc_biblio.biblionumber and biblio.biblionumber=biblioitems.biblionumber and m1.bibid=marc_biblio.bibid and $sql_where1 order by $orderby";
157 # Processes the NOT if any and there are results
158 my ($not_sql_tables, $not_sql_where1, $not_sql_where2);
160 if( ($sth->rows) && $any_not ) # some results to tune up and some NOT statements
162 ($not_sql_tables, $not_sql_where1, $not_sql_where2) = create_request($dbh,\@not_tags, \@not_and_or, \@not_operator, \@not_value);
166 while (my ($bibid) = $sth->fetchrow) {
167 push @tmpresult,$bibid;
170 warn "NOT : select distinct m1.bibid from $not_sql_tables where $not_sql_where2 and ($not_sql_where1)";
171 if ($not_sql_where2) {
172 $sth_not = $dbh->prepare("select distinct m1.bibid from $not_sql_tables where $not_sql_where2 and ($not_sql_where1)");
174 $sth_not = $dbh->prepare("select distinct m1.bibid from $not_sql_tables where $not_sql_where1");
181 while(my $bibid = $sth_not->fetchrow()) {
182 $not_bibids{$bibid} = 1; # populates the hashtable with the bibids matching the NOT statement
185 foreach my $bibid (@tmpresult)
187 if(!$not_bibids{$bibid})
189 push @result, $bibid;
195 else # no NOT statements
197 while (my ($bibid) = $sth->fetchrow) {
202 # we have bibid list. Now, loads title and author from [offset] to [offset]+[length]
203 my $counter = $offset;
204 $sth = $dbh->prepare("select author,title from biblio,marc_biblio where biblio.biblionumber=marc_biblio.biblionumber and bibid=?");
205 my @finalresult = ();
206 while (($counter <= $#result) && ($counter <= ($offset + $length))) {
207 $sth->execute($result[$counter]);
208 my ($author,$title) = $sth->fetchrow;
210 $line{bibid}=$result[$counter];
211 $line{author}=$author;
213 push @finalresult, \%line;
217 my $nbresults = $#result + 1;
218 return (\@finalresult, $nbresults);
221 # Creates the SQL Request
224 my ($dbh,$tags, $and_or, $operator, $value) = @_;
226 my $sql_tables; # will contain marc_subfield_table as m1,...
227 my $sql_where1; # will contain the "true" where
228 my $sql_where2 = "("; # will contain m1.bibid=m2.bibid
229 my $nb_active=0; # will contain the number of "active" entries. and entry is active is a value is provided.
230 my $nb_table=1; # will contain the number of table. ++ on each entry EXCEPT when an OR is provided.
232 for(my $i=0; $i<=@$value;$i++) {
236 if (@$operator[$i] eq "start") {
237 $sql_tables .= "marc_subfield_table as m$nb_table,";
238 $sql_where1 .= "(m1.subfieldvalue like ".$dbh->quote("@$value[$i]%");
240 $sql_where1 .=" and m1.tag+m1.subfieldcode in (@$tags[$i])";
243 } elsif (@$operator[$i] eq "contains") {
244 $sql_tables .= "marc_word as m$nb_table,";
245 $sql_where1 .= "(m1.word like ".$dbh->quote("@$value[$i]%");
247 $sql_where1 .=" and m1.tag+m1.subfieldid in (@$tags[$i])";
251 $sql_tables .= "marc_subfield_table as m$nb_table,";
252 $sql_where1 .= "(m1.subfieldvalue @$operator[$i] ".$dbh->quote("@$value[$i]");
254 $sql_where1 .=" and m1.tag+m1.subfieldcode in (@$tags[$i])";
259 if (@$operator[$i] eq "start") {
261 $sql_tables .= "marc_subfield_table as m$nb_table,";
262 $sql_where1 .= "@$and_or[$i] (m$nb_table.subfieldvalue like ".$dbh->quote("@$value[$i]%");
264 $sql_where1 .=" and m$nb_table.tag+m$nb_table.subfieldcode in (@$tags[$i])";
267 $sql_where2 .= "m1.bibid=m$nb_table.bibid and ";
268 } elsif (@$operator[$i] eq "contains") {
269 if (@$and_or[$i] eq 'and') {
271 $sql_tables .= "marc_word as m$nb_table,";
272 $sql_where1 .= "@$and_or[$i] (m$nb_table.word like ".$dbh->quote("@$value[$i]%");
274 $sql_where1 .=" and m$nb_table.tag+m$nb_table.subfieldid in(@$tags[$i])";
277 $sql_where2 .= "m1.bibid=m$nb_table.bibid and ";
279 $sql_where1 .= "@$and_or[$i] (m$nb_table.word like ".$dbh->quote("@$value[$i]%");
281 $sql_where1 .=" and m$nb_table.tag+m$nb_table.subfieldid in (@$tags[$i])";
284 $sql_where2 .= "m1.bibid=m$nb_table.bibid and ";
288 $sql_tables .= "marc_subfield_table as m$nb_table,";
289 $sql_where1 .= "@$and_or[$i] (m$nb_table.subfieldvalue @$operator[$i] ".$dbh->quote(@$value[$i]);
291 $sql_where1 .=" and m$nb_table.tag+m$nb_table.subfieldcode in (@$tags[$i])";
293 $sql_where2 .= "m1.bibid=m$nb_table.bibid and ";
300 if($sql_where2 ne "(") # some datas added to sql_where2, processing
302 $sql_where2 = substr($sql_where2, 0, (length($sql_where2)-5)); # deletes the trailing ' and '
305 else # no sql_where2 statement, deleting '('
309 chop $sql_tables; # deletes the trailing ','
310 return ($sql_tables, $sql_where1, $sql_where2);
314 END { } # module clean-up code here (global destructor)
323 Koha Developement team <info@koha.org>