Koha/C4/Linker/Default.pm
Jared Camins-Esakov 8a718d6c9b Bug 8447: Make sure we have enough subfields for broader_headings
Thanks to wajasu for providing the debugging information, as I cannot
seem to duplicate the problem, even seeing where it could come from.

Fix corrects cases where upon save, a software error complaing about
indicators being wrong as a side effect of a poorly autogenerated
biblio/authority record.

Behvior with this fix causes existing bilio data to to be preserved
while linking to the authority via subtag 9.

Signed-off-by: wajasu <matted-34813@mypacks.net>
Signed-off-by: Paul Poulain <paul.poulain@biblibre.com>
2012-09-14 14:56:48 +02:00

96 lines
3 KiB
Perl

package C4::Linker::Default;
# Copyright 2011 C & P Bibliography Services
#
# This file is part of Koha.
#
# Koha is free software; you can redistribute it and/or modify it under the
# terms of the GNU General Public License as published by the Free Software
# Foundation; either version 2 of the License, or (at your option) any later
# version.
#
# Koha is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE. See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with Koha; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
use strict;
use warnings;
use Carp;
use MARC::Field;
use C4::Heading;
use base qw(C4::Linker);
sub get_link {
my $self = shift;
my $heading = shift;
my $behavior = shift || 'default';
my $search_form = $heading->search_form();
my $authid;
my $fuzzy = 0;
if ( $self->{'cache'}->{$search_form}->{'cached'} ) {
$authid = $self->{'cache'}->{$search_form}->{'authid'};
$fuzzy = $self->{'cache'}->{$search_form}->{'fuzzy'};
}
else {
# look for matching authorities
my $authorities = $heading->authorities(1); # $skipmetadata = true
if ( $behavior eq 'default' && $#{$authorities} == 0 ) {
$authid = $authorities->[0]->{'authid'};
}
elsif ( $behavior eq 'first' && $#{$authorities} >= 0 ) {
$authid = $authorities->[0]->{'authid'};
$fuzzy = $#{$authorities} > 0;
}
elsif ( $behavior eq 'last' && $#{$authorities} >= 0 ) {
$authid = $authorities->[ $#{$authorities} ]->{'authid'};
$fuzzy = $#{$authorities} > 0;
}
if ( !defined $authid && $self->{'broader_headings'} ) {
my $field = $heading->field();
my @subfields = grep { $_->[0] ne '9' } $field->subfields();
if ( scalar @subfields > 1 ) {
pop @subfields;
$field =
MARC::Field->new(
$field->tag,
$field->indicator(1),
$field->indicator(2),
map { $_->[0] => $_->[1] } @subfields
);
( $authid, $fuzzy ) =
$self->get_link( C4::Heading->new_from_bib_field($field),
$behavior );
}
}
$self->{'cache'}->{$search_form}->{'cached'} = 1;
$self->{'cache'}->{$search_form}->{'authid'} = $authid;
$self->{'cache'}->{$search_form}->{'fuzzy'} = $fuzzy;
}
return $self->SUPER::_handle_auth_limit($authid), $fuzzy;
}
sub flip_heading {
my $self = shift;
my $heading = shift;
# TODO: implement
}
1;
__END__
=head1 NAME
C4::Linker::Default - match only if there is a single matching auth
=cut