Koha/Biblio/Metadata.pm

   1 package Koha::Biblio::Metadata;
   2
   3 # This file is part of Koha.
   4 #
   5 # Koha is free software; you can redistribute it and/or modify it
   6 # under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 3 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # Koha is distributed in the hope that it will be useful, but
  11 # WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with Koha; if not, see <http://www.gnu.org/licenses>.
  17
  18 use Modern::Perl;
  19
  20 use MARC::Record;
  21 use MARC::File::XML;
  22
  23 use Koha::Database;
  24 use Koha::Exceptions::Metadata;
  25
  26 use base qw(Koha::Object);
  27
  28 =head1 NAME
  29
  30 Koha::Metadata - Koha Metadata Object class
  31
  32 =head1 API
  33
  34 =head2 Class methods
  35
  36 =cut
  37
  38 =head3 record
  39
  40 my $record = $metadata->record;
  41
  42 Returns an object representing the metadata record. The expected record type
  43 corresponds to this table:
  44
  45     -------------------------------
  46     | format     | object type    |
  47     -------------------------------
  48     | marcxml    | MARC::Record   |
  49     -------------------------------
  50
  51 =head4 Error handling
  52
  53 =over
  54
  55 =item If an unsupported format is found, it throws a I<Koha::Exceptions::Metadata> exception.
  56
  57 =item If it fails to create the record object, it throws a I<Koha::Exceptions::Metadata::Invalid> exception.
  58
  59 =back
  60
  61 =cut
  62
  63 sub record {
  64
  65     my ($self) = @_;
  66
  67     my $record;
  68
  69     if ( $self->format eq 'marcxml' ) {
  70         $record = eval { MARC::Record::new_from_xml( $self->metadata, 'UTF-8', $self->schema ); };
  71         my $marcxml_error = $@;
  72         chomp $marcxml_error;
  73         unless ($record) {
  74             Koha::Exceptions::Metadata::Invalid->throw(
  75                 id     => $self->id,
  76                 format => $self->format,
  77                 schema => $self->schema,
  78                 decoding_error => $marcxml_error,
  79             );
  80         }
  81     }
  82     else {
  83         Koha::Exceptions::Metadata->throw(
  84             'Koha::Biblio::Metadata->record called on unhandled format: ' . $self->format );
  85     }
  86
  87     return $record;
  88 }
  89
  90 =head2 Internal methods
  91
  92 =head3 _type
  93
  94 =cut
  95
  96 sub _type {
  97     return 'BiblioMetadata';
  98 }
  99
 100 1;