128 lines
3.3 KiB
Perl
128 lines
3.3 KiB
Perl
package C4::AuthoritiesMarc::MARC21;
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# Copyright (C) 2007 LibLime
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#
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# This file is part of Koha.
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#
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# Koha is free software; you can redistribute it and/or modify it under the
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# terms of the GNU General Public License as published by the Free Software
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# Foundation; either version 2 of the License, or (at your option) any later
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# version.
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#
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# Koha is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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# A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with Koha; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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use strict;
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#use warnings; FIXME - Bug 2505
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use MARC::Record;
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our $VERSION = 3.00;
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=head1 NAME
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C4::AuthoritiesMarc::MARC21
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=head1 SYNOPSIS
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use C4::AuthoritiesMarc::MARC21;
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=head1 DESCRIPTION
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This is a helper module providing functions used by
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C<C4::AuthoritiesMarc> to deal with behavior specific
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to MARC21 authority records (as opposed to other
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MARC formats).
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Functions from this module generally should not be used
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directly; instead, use the appropriate function from
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C<C4::Authorities> that will dispatch the appropriate
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function based on the marcflavour system preference.
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=head1 FUNCTIONS
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=cut
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=head2 get_heading_type_from_marc
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=over 4
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my $auth_type = get_auth_type_from_marc($marc);
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=back
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Given a MARC::Record object containing an authority record,
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determine its heading type (e.g., personal name, topical term,
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etc.).
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=cut
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=head2 default_auth_type_location
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=over 4
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my ($tag, $subfield) = default_auth_type_location();
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=back
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Get the tag and subfield used to store the heading type
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if not specified in the MARC framework. For MARC21,
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this defaults to 942$a.
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=cut
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sub default_auth_type_location {
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return ('942', 'a');
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}
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=head2 fix_marc21_auth_type_location
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=over 4
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fix_marc21_auth_type_location($auth_marc, $auth_type_tag, $auth_type_subfield);
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=back
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If the incoming C<MARC::Record> object has a 152$b, remove it. If no
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field already exists that contains the specified C<$auth_type_tag>
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and C<$auth_type_subfield>, create a new field whose contents
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are the original contents of the 152$b.
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This routine exists to deal with a historical problem: MARC21
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authority records in previous versions of Koha kept the
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authority type in the 152$b. While the 152 may be OK for UNIMARC,
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a 9XX should have been used for MARC21.
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This function is meant to be called from GetAuthority, GetAuthorityXML,
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and AddAuthority.
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FIXME: This function should be removed once it's determined
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that no MARC21 users of Koha are using the 152$b
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to store the authority type.
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=cut
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sub fix_marc21_auth_type_location {
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my ($auth_marc, $auth_type_tag, $auth_type_subfield) = @_;
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my $auth_type_code;
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return unless $auth_type_code = $auth_marc->subfield('152', 'b');
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$auth_marc->delete_field($auth_marc->field('152'));
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unless ($auth_marc->field($auth_type_tag) && $auth_marc->subfield($auth_type_tag, $auth_type_subfield)) {
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$auth_marc->add_fields($auth_type_tag,'','', $auth_type_subfield=>$auth_type_code);
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}
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}
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=head1 AUTHOR
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Koha Developement team <info@koha.org>
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Galen Charlton <galen.charlton@liblime.com>
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=cut
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1;
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