1 package Koha::Filter::MARC::EmbedSeeFromHeadings;
3 # Copyright 2012 C & P Bibliography Services
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
17 # with Koha; if not, write to the Free Software Foundation, Inc.,
18 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
22 Koha::Filter::MARC::EmbedSeeFromHeadings - embeds see from headings into MARC for indexing
29 Filter to embed see from headings into MARC records.
38 use base qw(Koha::RecordProcessor::Base);
39 our $NAME = 'EmbedSeeFromHeadings';
44 my $newrecord = $filter->filter($record);
45 my $newrecords = $filter->filter(\@records);
47 Embed see from headings into the specified record(s) and return the result.
48 In order to differentiate added headings from actual headings, a 'z' is
49 put in the first indicator.
57 return unless defined $record;
59 if (ref $record eq 'ARRAY') {
61 foreach my $thisrec (@$record) {
62 push @recarray, _processrecord($thisrec);
64 $newrecord = \@recarray;
65 } elsif (ref $record eq 'MARC::Record') {
66 $newrecord = _processrecord($record);
75 foreach my $field ( $record->fields() ) {
76 next if $field->is_control_field();
77 my $authid = $field->subfield('9');
81 my $authority = Koha::Authority->get_from_authid($authid);
82 next unless $authority;
83 my $auth_marc = $authority->record;
84 my @seefrom = $auth_marc->field('4..');
86 foreach my $authfield (@seefrom) {
87 my $tag = substr($field->tag(), 0, 1) . substr($authfield->tag(), 1, 2);
88 my $newfield = MARC::Field->new($tag,
90 $authfield->indicator(2) || ' ',
92 foreach my $sub ($authfield->subfields()) {
93 my ($code,$val) = @$sub;
94 $newfield->add_subfields( $code => $val );
96 $newfield->delete_subfield( code => '9' );
97 push @newfields, $newfield if (scalar($newfield->subfields()) > 0);
99 $record->append_fields(@newfields);