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 &findsuggestion);
57 # make all your functions, whether exported or not;
60 my ($dbh,$values) = @_;
61 my $sth = $dbh->prepare("SELECT count( * ) AS total, word FROM marc_word WHERE sndx_word = soundex( ? ) AND word <> ? GROUP BY word ORDER BY total DESC");
63 for(my $i = 0 ; $i <= $#{$values} ; $i++) {
64 if (length(@$values[$i]) >=5) {
65 $sth->execute(@$values[$i],@$values[$i]);
68 while ((my ($count,$word) = $sth->fetchrow) and $resfound <=10) {
69 push @results, "@$values[$i]|$word|$count";
70 # $results{@$values[$i]} = \@resline;
78 my ($dbh, $fields) = @_;
79 my $tagslib = MARCgettagslib ($dbh,1);
80 for (my $i=0;$i<=$#{$fields};$i++) {
81 my ($tag) =substr(@$fields[$i],1,3);
82 my ($subfield) =substr(@$fields[$i],4,1);
83 @$fields[$i].=','.$tagslib->{$tag}->{$subfield}->{seealso} if ($tagslib->{$tag}->{$subfield}->{seealso});
87 # marcsearch : search in the MARC biblio table.
88 # everything is choosen by the user : what to search, the conditions...
91 my ($dbh, $tags, $and_or, $excluding, $operator, $value, $offset,$length,$orderby) = @_;
92 # build the sql request. She will look like :
94 # from marc_subfield_table as m1, marc_subfield_table as m2
95 # where m1.bibid=m2.bibid and
96 # (m1.subfieldvalue like "Des%" and m2.subfieldvalue like "27%")
100 my @normal_and_or = ();
101 my @normal_operator = ();
102 my @normal_value = ();
103 # Extracts the NOT statements from the list of statements
106 my @not_operator = ();
109 $orderby = "biblio.title" unless $orderby;
110 for(my $i = 0 ; $i <= $#{$value} ; $i++)
112 if(@$excluding[$i]) # NOT statements
115 if(@$operator[$i] eq "contains")
117 foreach my $word (split(/ /, @$value[$i])) # if operator is contains, splits the words in separate requests
119 unless (C4::Context->stopwords->{uc($word)}) { #it's NOT a stopword => use it. Otherwise, ignore
120 push @not_tags, @$tags[$i];
121 push @not_and_or, "or"; # as request is negated, finds "foo" or "bar" if final request is NOT "foo" and "bar"
122 push @not_operator, @$operator[$i];
123 push @not_value, $word;
129 push @not_tags, @$tags[$i];
130 push @not_and_or, "or"; # as request is negated, finds "foo" or "bar" if final request is NOT "foo" and "bar"
131 push @not_operator, @$operator[$i];
132 push @not_value, @$value[$i];
135 else # NORMAL statements
137 if(@$operator[$i] eq "contains") # if operator is contains, splits the words in separate requests
139 foreach my $word (split(/ /, @$value[$i]))
141 unless (C4::Context->stopwords->{uc($word)}) { #it's NOT a stopword => use it. Otherwise, ignore
142 my $tag = substr(@$tags[$i],0,3);
143 my $subf = substr(@$tags[$i],3,1);
144 push @normal_tags, @$tags[$i];
145 push @normal_and_or, "and"; # assumes "foo" and "bar" if "foo bar" is entered
146 push @normal_operator, @$operator[$i];
147 push @normal_value, $word;
153 push @normal_tags, @$tags[$i];
154 push @normal_and_or, @$and_or[$i];
155 push @normal_operator, @$operator[$i];
156 push @normal_value, @$value[$i];
161 # Finds the basic results without the NOT requests
162 my ($sql_tables, $sql_where1, $sql_where2) = create_request($dbh,\@normal_tags, \@normal_and_or, \@normal_operator, \@normal_value);
166 $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 $orderby");
167 warn "Q2 : select distinct m1.bibid from biblio,biblioitems,marc_biblio,$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";
169 $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 $orderby");
170 warn "Q : select distinct m1.bibid from biblio,biblioitems,marc_biblio,$sql_tables where biblio.biblionumber=marc_biblio.biblionumber and biblio.biblionumber=biblioitems.biblionumber and m1.bibid=marc_biblio.bibid and $sql_where1 order by $orderby";
175 # Processes the NOT if any and there are results
176 my ($not_sql_tables, $not_sql_where1, $not_sql_where2);
178 if( ($sth->rows) && $any_not ) # some results to tune up and some NOT statements
180 ($not_sql_tables, $not_sql_where1, $not_sql_where2) = create_request($dbh,\@not_tags, \@not_and_or, \@not_operator, \@not_value);
184 while (my ($bibid) = $sth->fetchrow) {
185 push @tmpresult,$bibid;
188 warn "NOT : select distinct m1.bibid from $not_sql_tables where $not_sql_where2 and ($not_sql_where1)";
189 if ($not_sql_where2) {
190 $sth_not = $dbh->prepare("select distinct m1.bibid from $not_sql_tables where $not_sql_where2 and ($not_sql_where1)");
192 $sth_not = $dbh->prepare("select distinct m1.bibid from $not_sql_tables where $not_sql_where1");
199 while(my $bibid = $sth_not->fetchrow()) {
200 $not_bibids{$bibid} = 1; # populates the hashtable with the bibids matching the NOT statement
203 foreach my $bibid (@tmpresult)
205 if(!$not_bibids{$bibid})
207 push @result, $bibid;
213 else # no NOT statements
215 while (my ($bibid) = $sth->fetchrow) {
220 # we have bibid list. Now, loads title and author from [offset] to [offset]+[length]
221 my $counter = $offset;
222 $sth = $dbh->prepare("select author,title from biblio,marc_biblio where biblio.biblionumber=marc_biblio.biblionumber and bibid=?");
223 my @finalresult = ();
224 while (($counter <= $#result) && ($counter <= ($offset + $length))) {
225 $sth->execute($result[$counter]);
226 my ($author,$title) = $sth->fetchrow;
228 $line{bibid}=$result[$counter];
229 $line{author}=$author;
231 push @finalresult, \%line;
235 my $nbresults = $#result + 1;
236 return (\@finalresult, $nbresults);
239 # Creates the SQL Request
242 my ($dbh,$tags, $and_or, $operator, $value) = @_;
244 my $sql_tables; # will contain marc_subfield_table as m1,...
245 my $sql_where1; # will contain the "true" where
246 my $sql_where2 = "("; # will contain m1.bibid=m2.bibid
247 my $nb_active=0; # will contain the number of "active" entries. and entry is active is a value is provided.
248 my $nb_table=1; # will contain the number of table. ++ on each entry EXCEPT when an OR is provided.
250 for(my $i=0; $i<=@$value;$i++) {
254 if (@$operator[$i] eq "start") {
255 $sql_tables .= "marc_subfield_table as m$nb_table,";
256 $sql_where1 .= "(m1.subfieldvalue like ".$dbh->quote("@$value[$i]%");
258 $sql_where1 .=" and m1.tag+m1.subfieldcode in (@$tags[$i])";
261 } elsif (@$operator[$i] eq "contains") {
262 $sql_tables .= "marc_word as m$nb_table,";
263 $sql_where1 .= "(m1.word like ".$dbh->quote("@$value[$i]%");
265 $sql_where1 .=" and m1.tag+m1.subfieldid in (@$tags[$i])";
269 $sql_tables .= "marc_subfield_table as m$nb_table,";
270 $sql_where1 .= "(m1.subfieldvalue @$operator[$i] ".$dbh->quote("@$value[$i]");
272 $sql_where1 .=" and m1.tag+m1.subfieldcode in (@$tags[$i])";
277 if (@$operator[$i] eq "start") {
279 $sql_tables .= "marc_subfield_table as m$nb_table,";
280 $sql_where1 .= "@$and_or[$i] (m$nb_table.subfieldvalue like ".$dbh->quote("@$value[$i]%");
282 $sql_where1 .=" and m$nb_table.tag+m$nb_table.subfieldcode in (@$tags[$i])";
285 $sql_where2 .= "m1.bibid=m$nb_table.bibid and ";
286 } elsif (@$operator[$i] eq "contains") {
287 if (@$and_or[$i] eq 'and') {
289 $sql_tables .= "marc_word as m$nb_table,";
290 $sql_where1 .= "@$and_or[$i] (m$nb_table.word like ".$dbh->quote("@$value[$i]%");
292 $sql_where1 .=" and m$nb_table.tag+m$nb_table.subfieldid in(@$tags[$i])";
295 $sql_where2 .= "m1.bibid=m$nb_table.bibid and ";
297 $sql_where1 .= "@$and_or[$i] (m$nb_table.word like ".$dbh->quote("@$value[$i]%");
299 $sql_where1 .=" and m$nb_table.tag+m$nb_table.subfieldid in (@$tags[$i])";
302 $sql_where2 .= "m1.bibid=m$nb_table.bibid and ";
306 $sql_tables .= "marc_subfield_table as m$nb_table,";
307 $sql_where1 .= "@$and_or[$i] (m$nb_table.subfieldvalue @$operator[$i] ".$dbh->quote(@$value[$i]);
309 $sql_where1 .=" and m$nb_table.tag+m$nb_table.subfieldcode in (@$tags[$i])";
311 $sql_where2 .= "m1.bibid=m$nb_table.bibid and ";
318 if($sql_where2 ne "(") # some datas added to sql_where2, processing
320 $sql_where2 = substr($sql_where2, 0, (length($sql_where2)-5)); # deletes the trailing ' and '
323 else # no sql_where2 statement, deleting '('
327 chop $sql_tables; # deletes the trailing ','
328 return ($sql_tables, $sql_where1, $sql_where2);
332 END { } # module clean-up code here (global destructor)
341 Koha Developement team <info@koha.org>