Koha/C4/Linker/Default.pm
Nick Clemens 848a0d41ff Bug 21450: Cache authorities search using term and auth_type
This is a simple fix to prevent incorrect caching of results when using
link_bibs_to_authorities

To test:
1 - Find or create a record with the same term in a subject and genre
heading
2 - Find or create authority records for the term as a subject and genre
type
3 - Run link bibs to authorities
4 - Verify both tags in the record are linked to the subject heading
5 - Aply patch
6 - Unlink the record and re-run the script (or just re-run)
7 - Each tag should be linked to correct authority

Signed-off-by: Frank Hansen <frank.hansen@ub.lu.se>

Signed-off-by: Liz Rea <wizzyrea@gmail.com>

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
2019-05-30 10:13:38 +00:00

110 lines
3.4 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 3 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, see <http://www.gnu.org/licenses>.
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 $auth_type = $heading->auth_type();
my $authid;
my $fuzzy = 0;
if ( $self->{'cache'}->{$search_form.$auth_type}->{'cached'} ) {
$authid = $self->{'cache'}->{$search_form.$auth_type}->{'authid'};
$fuzzy = $self->{'cache'}->{$search_form.$auth_type}->{'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.$auth_type}->{'cached'} = 1;
$self->{'cache'}->{$search_form.$auth_type}->{'authid'} = $authid;
$self->{'cache'}->{$search_form.$auth_type}->{'fuzzy'} = $fuzzy;
}
return $self->SUPER::_handle_auth_limit($authid), $fuzzy;
}
sub update_cache {
my $self = shift;
my $heading = shift;
my $authid = shift;
my $search_form = $heading->search_form();
my $auth_type = $heading->auth_type();
my $fuzzy = 0;
$self->{'cache'}->{$search_form.$auth_type}->{'cached'} = 1;
$self->{'cache'}->{$search_form.$auth_type}->{'authid'} = $authid;
$self->{'cache'}->{$search_form.$auth_type}->{'fuzzy'} = $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