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
8 # under the terms of the GNU General Public License as published by
9 # the Free Software Foundation; either version 3 of the License, or
10 # (at your option) any later version.
12 # Koha is distributed in the hope that it will be useful, but
13 # 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 Koha; if not, see <http://www.gnu.org/licenses>.
22 Koha::Filter::MARC::EmbedSeeFromHeadings - embeds see from headings into MARC for indexing
29 Filter to embed see from headings into MARC records.
35 use Koha::MetadataRecord::Authority;
36 use C4::Biblio qw( GetMarcFromKohaField );
38 use base qw(Koha::RecordProcessor::Base);
39 our $NAME = 'EmbedSeeFromHeadings';
43 my $newrecord = $filter->filter($record);
44 my $newrecords = $filter->filter(\@records);
46 Embed see from headings into the specified record(s) and return the result.
47 In order to differentiate added headings from actual headings, a 'z' is
48 put in the first indicator.
56 return unless defined $record;
58 if (ref $record eq 'ARRAY') {
60 foreach my $thisrec (@$record) {
61 push @recarray, _processrecord($thisrec);
63 $newrecord = \@recarray;
64 } elsif (ref $record eq 'MARC::Record') {
65 $newrecord = _processrecord($record);
74 my ($item_tag) = GetMarcFromKohaField( "items.itemnumber" );
77 foreach my $field ( $record->fields() ) {
78 next if $field->is_control_field();
79 next if $field->tag() eq $item_tag;
80 my $authid = $field->subfield('9');
84 my $authority = Koha::MetadataRecord::Authority->get_from_authid($authid);
85 next unless $authority;
86 my $auth_marc = $authority->record;
87 my @seefrom = $auth_marc->field('4..');
89 foreach my $authfield (@seefrom) {
90 my $tag = substr($field->tag(), 0, 1) . substr($authfield->tag(), 1, 2);
91 next if MARC::Field->is_controlfield_tag($tag);
92 my $newfield = MARC::Field->new($tag,
94 $authfield->indicator(2) || ' ',
96 foreach my $sub ($authfield->subfields()) {
97 my ($code,$val) = @$sub;
98 $newfield->add_subfields( $code => $val );
100 $newfield->delete_subfield( code => '9' );
101 push @newfields, $newfield if (scalar($newfield->subfields()) > 0);
103 $record->append_fields(@newfields);