File Coverage

File:C4/XISBN.pm
Coverage:23.4%

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1package C4::XISBN;
2# Copyright (C) 2007 LibLime
3# Joshua Ferraro <jmf@liblime.com>
4#
5# This file is part of Koha.
6#
7# Koha is free software; you can redistribute it and/or modify it under the
8# terms of the GNU General Public License as published by the Free Software
9# Foundation; either version 2 of the License, or (at your option) any later
10# version.
11#
12# Koha is distributed in the hope that it will be useful, but WITHOUT ANY
13# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
14# A PARTICULAR PURPOSE. See the GNU General Public License for more details.
15#
16# You should have received a copy of the GNU General Public License along
17# with Koha; if not, write to the Free Software Foundation, Inc.,
18# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
19
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use XML::Simple;
21#use LWP::Simple;
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use C4::Biblio;
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use C4::Koha;
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use C4::External::Syndetics qw(get_syndetics_editions);
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use LWP::UserAgent;
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use HTTP::Request::Common;
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use strict;
29#use warnings; FIXME - Bug 2505
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use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS);
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32BEGIN {
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        require Exporter;
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        $VERSION = 3.01;
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        @ISA = qw(Exporter);
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        @EXPORT_OK = qw(
37                &get_xisbns
38        &get_biblionumber_from_isbn
39        );
40}
41
42sub get_biblionumber_from_isbn {
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    my $isbn = shift;
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    $isbn.='%';
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    my @biblionumbers;
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    my $dbh=C4::Context->dbh;
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    my $query = "SELECT biblionumber FROM biblioitems WHERE isbn LIKE ? LIMIT 10";
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    my $sth = $dbh->prepare($query);
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    $sth->execute($isbn);
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        return $sth->fetchall_arrayref({});
51}
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=head1 NAME

C4::XISBN - Functions for retrieving XISBN content in Koha

=head1 FUNCTIONS

This module provides facilities for retrieving ThingISBN and XISBN content in Koha

=cut
61
62sub _get_biblio_from_xisbn {
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    my $xisbn = shift;
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    $xisbn.='%';
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    my $dbh = C4::Context->dbh;
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    my $query = "SELECT biblionumber FROM biblioitems WHERE isbn LIKE ?";
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    my $sth = $dbh->prepare($query);
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    $sth->execute($xisbn);
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    my $xbib_data = $sth->fetchrow_hashref();
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    my $xbiblio;
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    if ($xbib_data->{biblionumber}) {
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        $xbiblio = GetBiblioData($xbib_data->{biblionumber});
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        $xbiblio->{normalized_isbn} = GetNormalizedISBN($xbiblio->{isbn});
74    }
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    return ($xbiblio);
76}
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=head1 get_xisbns($isbn);

=head2 $isbn is an ISBN string

=cut
83
84sub get_xisbns {
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    my ( $isbn ) = @_;
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    my ($response,$thing_response,$xisbn_response,$syndetics_response);
87    # THINGISBN
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    if ( C4::Context->preference('ThingISBN') ) {
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        my $url = "http://www.librarything.com/api/thingISBN/".$isbn;
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        $thing_response = _get_url($url,'thingisbn');
91    }
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        if ( C4::Context->preference("SyndeticsEnabled") && C4::Context->preference("SyndeticsEditions") ) {
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     my $syndetics_preresponse = &get_syndetics_editions($isbn);
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                my @syndetics_response;
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                for my $response (@$syndetics_preresponse) {
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                        push @syndetics_response, {content => $response->{a}};
98                }
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                $syndetics_response = {isbn => \@syndetics_response};
100        }
101
102    # XISBN
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    if ( C4::Context->preference('XISBN') ) {
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        my $affiliate_id=C4::Context->preference('OCLCAffiliateID');
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        my $limit = C4::Context->preference('XISBNDailyLimit') || 999;
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        my $reached_limit = _service_throttle('xisbn',$limit);
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        my $url = "http://xisbn.worldcat.org/webservices/xid/isbn/".$isbn."?method=getEditions&format=xml&fl=form,year,lang,ed";
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        $url.="&ai=".$affiliate_id if $affiliate_id;
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        unless ($reached_limit) {
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            $xisbn_response = _get_url($url,'xisbn');
111        }
112    }
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    $response->{isbn} = [ @{ $xisbn_response->{isbn} or [] }, @{ $syndetics_response->{isbn} or [] }, @{ $thing_response->{isbn} or [] } ];
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    my @xisbns;
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    my $unique_xisbns; # a hashref
117
118    # loop through each ISBN and scope to the local collection
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    for my $response_data( @{ $response->{ isbn } } ) {
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        next if $response_data->{'content'} eq $isbn;
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        next if $isbn eq $response_data;
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        next if $unique_xisbns->{ $response_data->{content} };
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        $unique_xisbns->{ $response_data->{content} }++;
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        my $xbiblio= _get_biblio_from_xisbn($response_data->{content});
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        push @xisbns, $xbiblio if $xbiblio;
126    }
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    return \@xisbns;
128}
129
130sub _get_url {
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    my ($url,$service_type) = @_;
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    my $ua = LWP::UserAgent->new(
133        timeout => 2
134        );
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    my $response = $ua->get($url);
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    if ($response->is_success) {
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        warn "WARNING could not retrieve $service_type $url" unless $response;
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        if ($response) {
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            my $xmlsimple = XML::Simple->new();
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            my $content = $xmlsimple->XMLin(
142            $response->content,
143            ForceArray => [ qw(isbn) ],
144            ForceContent => 1,
145            );
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            return $content;
147        }
148    } else {
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        warn "WARNING: URL Request Failed " . $response->status_line . "\n";
150    }
151
152}
153
154
155# Throttle services to the specified amount
156sub _service_throttle {
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    my ($service_type,$daily_limit) = @_;
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    my $dbh = C4::Context->dbh;
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    my $sth = $dbh->prepare("SELECT service_count FROM services_throttle WHERE service_type=?");
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    $sth->execute($service_type);
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    my $count = 1;
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    while (my $counter = $sth->fetchrow_hashref()) {
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        $count = $counter->{service_count} if $counter->{service_count};
165    }
166
167    # we're over the limit
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    return 1 if $count >= $daily_limit;
169
170    # not over the limit
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    $count++;
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    $sth = $dbh->do("UPDATE services_throttle SET service_count=$count WHERE service_type='xisbn'");
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    return undef;
174}
175
1761;