77 lines
2.6 KiB
Perl
77 lines
2.6 KiB
Perl
# Copyright Tamil s.a.r.l. 2008-2015
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# Copyright Biblibre 2008-2015
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# Copyright The National Library of Finland, University of Helsinki 2016-2017
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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
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# under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# Koha is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# 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
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# along with Koha; if not, see <https://www.gnu.org/licenses>.
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package Koha::OAI::Server::Identify;
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use Modern::Perl;
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use HTTP::OAI;
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use C4::Context;
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use Koha::DateUtils qw(dt_from_string);
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use base ("HTTP::OAI::Identify");
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sub new {
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my ( $class, $repository ) = @_;
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my $baseURL = $repository->self_url();
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$baseURL = $+{base_url}
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if $baseURL =~ m/(?<base_url>.*)\?.*/;
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$baseURL =~ s{/$}{}; # Strip trailing slash for CGI.pm 4.68+ compatibility
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my $self = $class->SUPER::new(
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baseURL => $baseURL,
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repositoryName => C4::Context->preference("LibraryName"),
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adminEmail => C4::Context->preference("KohaAdminEmailAddress"),
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MaxCount => C4::Context->preference("OAI-PMH:MaxCount"),
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granularity => 'YYYY-MM-DDThh:mm:ssZ',
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earliestDatestamp => _get_earliest_datestamp() || '0001-01-01T00:00:00Z',
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deletedRecord => C4::Context->preference("OAI-PMH:DeletedRecord") || 'no',
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);
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# FIXME - alas, the description element is not so simple; to validate
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# against the OAI-PMH schema, it cannot contain just a string,
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# but one or more elements that validate against another XML schema.
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# For now, simply omitting it.
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# $self->description( "Koha OAI Repository" );
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$self->compression('gzip');
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return $self;
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}
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# Find the earliest timestamp in the biblio table. If this table is empty, undef
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# will be returned and we will report the fallback 0001-01-01.
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sub _get_earliest_datestamp {
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my $dbh = C4::Context->dbh;
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# We do not need to perform timezone conversion here, because the time zone
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# is set to UTC for the entire SQL session in Koha/OAI/Server/Repository.pm
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my ($earliest) = $dbh->selectrow_array(
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q{
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SELECT MIN(timestamp) AS earliest
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FROM biblio
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}
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);
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return dt_from_string( $earliest, 'sql' )->strftime('%FT%TZ');
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}
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1;
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