package C4::AuthoritiesMarc::MARC21; # Copyright (C) 2007 LibLime # # 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; FIXME - Bug 2505 use MARC::Record; our $VERSION = 3.07.00.049; =head1 NAME C4::AuthoritiesMarc::MARC21 =head1 SYNOPSIS use C4::AuthoritiesMarc::MARC21; =head1 DESCRIPTION This is a helper module providing functions used by C to deal with behavior specific to MARC21 authority records (as opposed to other MARC formats). Functions from this module generally should not be used directly; instead, use the appropriate function from C that will dispatch the appropriate function based on the marcflavour system preference. =head1 FUNCTIONS =cut =head2 get_heading_type_from_marc my $auth_type = get_auth_type_from_marc($marc); Given a MARC::Record object containing an authority record, determine its heading type (e.g., personal name, topical term, etc.). =cut =head2 default_auth_type_location my ($tag, $subfield) = default_auth_type_location(); Get the tag and subfield used to store the heading type if not specified in the MARC framework. For MARC21, this defaults to 942$a. =cut sub default_auth_type_location { return ('942', 'a'); } =head2 fix_marc21_auth_type_location fix_marc21_auth_type_location($auth_marc, $auth_type_tag, $auth_type_subfield); If the incoming C object has a 152$b, remove it. If no field already exists that contains the specified C<$auth_type_tag> and C<$auth_type_subfield>, create a new field whose contents are the original contents of the 152$b. This routine exists to deal with a historical problem: MARC21 authority records in previous versions of Koha kept the authority type in the 152$b. While the 152 may be OK for UNIMARC, a 9XX should have been used for MARC21. This function is meant to be called from GetAuthority, GetAuthorityXML, and AddAuthority. FIXME: This function should be removed once it's determined that no MARC21 users of Koha are using the 152$b to store the authority type. =cut sub fix_marc21_auth_type_location { my ($auth_marc, $auth_type_tag, $auth_type_subfield) = @_; my $auth_type_code; return unless $auth_type_code = $auth_marc->subfield('152', 'b'); $auth_marc->delete_field($auth_marc->field('152')); unless ($auth_marc->field($auth_type_tag) && $auth_marc->subfield($auth_type_tag, $auth_type_subfield)) { $auth_marc->add_fields($auth_type_tag,'','', $auth_type_subfield=>$auth_type_code); } } =head1 AUTHOR Koha Development Team Galen Charlton =cut 1;