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.
36 use Koha::MetadataRecord::Authority;
37 use C4::Biblio qw/GetMarcFromKohaField/;
39 use base qw(Koha::RecordProcessor::Base);
40 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, $self->_processrecord($thisrec);
64 $newrecord = \@recarray;
65 } elsif (ref $record eq 'MARC::Record') {
66 $newrecord = $self->_processrecord($record);
73 my ($self, $record) = @_;
75 $record->append_fields($self->fields($record));
82 my @fields = $filter->fields($record);
84 Retrieve the fields that would be embedded if the record were processed by the filter.
85 Used during Elasticsearch indexing to give special treatment to these field (i.e. don't
86 include in facets, sorting, or suggestion fields)
90 my ($self, $record) = @_;
92 my ($item_tag) = GetMarcFromKohaField( "items.itemnumber" );
96 foreach my $field ( $record->fields() ) {
97 next if $field->is_control_field();
98 next if $field->tag() eq $item_tag;
99 my $authid = $field->subfield('9');
103 my $authority = Koha::MetadataRecord::Authority->get_from_authid($authid);
104 next unless $authority;
105 my $auth_marc = $authority->record;
106 my @seefrom = $auth_marc->field('4..');
107 foreach my $authfield (@seefrom) {
108 my $tag = substr($field->tag(), 0, 1) . substr($authfield->tag(), 1, 2);
109 next if MARC::Field->is_controlfield_tag($tag);
110 my $newfield = MARC::Field->new($tag,
112 $authfield->indicator(2) || ' ',
114 foreach my $sub ($authfield->subfields()) {
115 my ($code,$val) = @$sub;
116 $newfield->add_subfields( $code => $val );
118 $newfield->delete_subfield( code => '9' );
119 push @newfields, $newfield if (scalar($newfield->subfields()) > 0);