1 package Koha::BiblioUtils;
3 # This contains functions to do with managing biblio records.
5 # Copyright 2014 Catalyst IT
7 # This file is part of Koha.
9 # Koha is free software; you can redistribute it and/or modify it
10 # under the terms of the GNU General Public License as published by
11 # the Free Software Foundation; either version 3 of the License, or
12 # (at your option) any later version.
14 # Koha is distributed in the hope that it will be useful, but
15 # WITHOUT ANY WARRANTY; without even the implied warranty of
16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 # GNU General Public License for more details.
19 # You should have received a copy of the GNU General Public License
20 # along with Koha; if not, see <http://www.gnu.org/licenses>.
24 Koha::BiblioUtils - contains fundamental biblio-related functions
28 This contains functions for normal operations on biblio records.
33 use Koha::MetadataIterator;
38 use base qw(Koha::MetadataRecord);
40 __PACKAGE__->mk_accessors(qw( record schema id datatype ));
46 my $biblio = Koha::BiblioUtils->new($marc_record, [$biblionumber]);
48 Creates an instance of C<Koha::BiblioUtils> based on the marc record. If known,
49 the biblionumber can be provided too.
56 my $biblionumber = shift;
58 my $self = $class->SUPER::new(
61 'schema' => lc C4::Context->preference("marcflavour"),
62 'id' => $biblionumber,
63 'datatype' => 'biblio',
70 =head2 get_from_biblionumber
72 my $biblio = Koha::BiblioUtils->get_from_biblionumber($biblionumber, %options);
74 This will give you an instance of L<Koha::BiblioUtils> that is the biblio that
83 If true, then the item data will be merged into the record when it's loaded.
87 It will return C<undef> if the biblio doesn't exist.
91 sub get_from_biblionumber {
92 my ($class, $bibnum, %options) = @_;
94 my $marc = $class->get_marc_biblio($bibnum, %options);
95 return $class->new($marc, $bibnum);
98 =head2 get_all_biblios_iterator
100 my $it = Koha::BiblioUtils->get_all_biblios_iterator(%options);
102 This will provide an iterator object that will, one by one, provide the
103 Koha::BiblioUtils of each biblio. This will include the item data.
105 The iterator is a Koha::MetadataIterator object.
107 Possible options are:
113 slice may be defined as a hash of two values: index and count. index
114 is the slice number to process and count is total number of slices.
115 With this information the iterator returns just the given slice of
116 records instead of all.
122 sub get_all_biblios_iterator {
123 my ($class, %options) = @_;
125 my $search_terms = {};
126 my ($slice_modulo, $slice_count);
127 if ($options{slice}) {
128 $slice_count = $options{slice}->{count};
129 $slice_modulo = $options{slice}->{index};
130 $search_terms = \[ 'mod(biblionumber, ?) = ?', $slice_count, $slice_modulo ];
133 my $search_options = { columns => [qw/ biblionumber /] };
134 if ( $options{desc} ){
135 $search_options->{order_by} = { -desc => 'biblionumber' };
138 my $database = Koha::Database->new();
139 my $schema = $database->schema();
140 my $rs = Koha::Biblios->search(
143 my $next_func = sub {
144 # Warn and skip bad records, otherwise we break the loop
146 my $row = $rs->next();
149 my $marc = $row->metadata->record({ embed_items => 1 });
150 $class->new($marc, $row->biblionumber);
153 warn sprintf "Something went wrong reading record for biblio %s: %s\n", $row->biblionumber, $@;
159 return Koha::MetadataIterator->new($next_func);
162 =head2 get_marc_biblio
164 my $marc = Koha::BiblioUtils->get_marc_biblio($bibnum, %options);
166 This non-class function fetches the MARC::Record for the given biblio number.
167 Nothing is returned if the biblionumber couldn't be found (or it somehow has no
176 If set to true, item data is embedded in the record. Default is to not do this.
182 sub get_marc_biblio {
183 my ($class, $bibnum, %options) = @_;
185 my $record = Koha::Biblios->find($bibnum)
186 ->metadata->record( { $options{item_data} ? ( embed_items => 1 ) : () } );