124 lines
4.3 KiB
Perl
124 lines
4.3 KiB
Perl
# Copyright Tamil s.a.r.l. 2008-2015
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# Copyright Biblibre 2008-2015
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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::GetRecord;
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use Modern::Perl;
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use HTTP::OAI;
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use C4::OAI::Sets qw( GetOAISetsBiblio );
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use MARC::File::XML;
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use base ("HTTP::OAI::GetRecord");
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sub new {
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my ( $class, $repository, %args ) = @_;
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my $self = HTTP::OAI::GetRecord->new(%args);
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my $prefix = $repository->{koha_identifier} . ':';
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my ($biblionumber) = $args{identifier} =~ /^$prefix(.*)/;
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my $items_included = $repository->items_included( $args{metadataPrefix} );
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my $dbh = C4::Context->dbh;
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my $sql;
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my @bind_params = ($biblionumber);
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# Primary table in select aliased to `main` so we can reuse this WHERE clause
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my $where = 'main.biblionumber = ?';
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$where .=
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' AND NOT EXISTS (SELECT 1 FROM biblio WHERE biblio.biblionumber = main.biblionumber AND biblio.opac_suppressed)'
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if C4::Context->is_opac_suppressed;
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if ($items_included) {
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# Take latest timestamp of biblio and any items
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# Or timestamp of deleted items where bib not deleted
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$sql .= "
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SELECT main.timestamp AS timestamp
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FROM biblio_metadata main
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WHERE $where
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UNION
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SELECT main.timestamp FROM deleteditems main JOIN biblio USING (biblionumber)
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WHERE $where
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UNION
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SELECT main.timestamp from items main
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WHERE $where
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";
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push @bind_params, $biblionumber;
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push @bind_params, $biblionumber;
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$sql = "
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SELECT max(timestamp) as timestamp
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FROM ($sql) bib
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";
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} else {
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$sql = "
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SELECT max(main.timestamp) as timestamp
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FROM biblio_metadata main
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WHERE $where
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";
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}
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my $sth = $dbh->prepare($sql) || die( 'Could not prepare statement: ' . $dbh->errstr );
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$sth->execute(@bind_params) || die( 'Could not execute statement: ' . $sth->errstr );
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my ( $timestamp, $deleted );
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# If there are no rows in biblio_metadata, try deletedbiblio_metadata
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unless ( ( $timestamp = $sth->fetchrow ) ) {
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$sql = "
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SELECT max(timestamp)
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FROM deletedbiblio_metadata
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WHERE biblionumber=?
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";
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@bind_params = ($biblionumber);
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$sth = $dbh->prepare($sql) || die( 'Could not prepare statement: ' . $dbh->errstr );
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$sth->execute(@bind_params) || die( 'Could not execute statement: ' . $sth->errstr );
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unless ( ( $timestamp = $sth->fetchrow ) ) {
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return HTTP::OAI::Response->new(
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requestURL => $repository->self_url(),
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errors => [
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HTTP::OAI::Error->new(
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code => 'idDoesNotExist',
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message => "There is no biblio record with this identifier",
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)
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],
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);
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}
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$deleted = 1;
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}
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my $oai_sets = GetOAISetsBiblio($biblionumber);
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my @setSpecs;
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foreach (@$oai_sets) {
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push @setSpecs, $_->{spec};
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}
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#NOTE: Show a deleted record if there is no metadata
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# We fetch it using this method, rather than the database directly,
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# so it'll include the item data
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my ( $marcxml, $marcxml_error ) =
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$deleted ? undef : $repository->get_biblio_marcxml( $biblionumber, $args{metadataPrefix} );
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if ( !$marcxml ) {
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$self->record( Koha::OAI::Server::DeletedRecord->new( $timestamp, \@setSpecs, %args ) );
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} else {
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$args{about} = [$marcxml_error] if $marcxml_error;
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$self->record( Koha::OAI::Server::Record->new( $repository, $marcxml, $timestamp, \@setSpecs, %args ) );
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}
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return $self;
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}
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1;
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