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package C4::XISBN;
# Copyright (C) 2007 LibLime
# Joshua Ferraro <jmf@liblime.com>
#
# 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., 59 Temple Place,
# Suite 330, Boston, MA 02111-1307 USA
use XML::Simple;
#use LWP::Simple;
use C4::Biblio;
use C4::Items;
use C4::Koha;
use C4::External::Syndetics qw(get_syndetics_editions);
use LWP::UserAgent;
use HTTP::Request::Common;
use strict;
use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS);
BEGIN {
require Exporter;
$VERSION = 3.01;
@ISA = qw(Exporter);
@EXPORT_OK = qw(
&get_xisbns
&get_biblionumber_from_isbn
);
}
sub get_biblionumber_from_isbn {
my $isbn = shift;
$isbn.='%';
my @biblionumbers;
my $dbh=C4::Context->dbh;
my $query = "SELECT biblionumber FROM biblioitems WHERE isbn LIKE ? LIMIT 10";
my $sth = $dbh->prepare($query);
$sth->execute($isbn);
return $sth->fetchall_arrayref({});
}
=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
sub _get_biblio_from_xisbn {
my $xisbn = shift;
$xisbn.='%';
my $dbh = C4::Context->dbh;
my $query = "SELECT biblionumber FROM biblioitems WHERE isbn LIKE ?";
my $sth = $dbh->prepare($query);
$sth->execute($xisbn);
my $xbib_data = $sth->fetchrow_hashref();
my $xbiblio;
if ($xbib_data->{biblionumber}) {
$xbiblio = GetBiblioData($xbib_data->{biblionumber});
$xbiblio->{normalized_isbn} = GetNormalizedISBN($xbiblio->{isbn});
$xbiblio->{items} = GetItemsByBiblioitemnumber($xbib_data->{biblionumber});
}
return ($xbiblio);
}
=head1 get_xisbns($isbn);
=head2 $isbn is an ISBN string
=cut
sub get_xisbns {
my ( $isbn ) = @_;
my ($response,$thing_response,$xisbn_response,$gapines_response,$syndetics_response);
# THINGISBN
if ( C4::Context->preference('ThingISBN') ) {
my $url = "http://www.librarything.com/api/thingISBN/".$isbn;
$thing_response = _get_url($url,'thingisbn');
}
if ( C4::Context->preference("SyndeticsEnabled") && C4::Context->preference("SyndeticsEditions") ) {
my $syndetics_preresponse = &get_syndetics_editions($isbn);
my @syndetics_response;
for my $response (@$syndetics_preresponse) {
push @syndetics_response, {content => $response->{a}};
}
$syndetics_response = {isbn => \@syndetics_response};
}
# XISBN
if ( C4::Context->preference('XISBN') ) {
my $affiliate_id=C4::Context->preference('OCLCAffiliateID');
my $limit = C4::Context->preference('XISBNDailyLimit') || 499;
my $reached_limit = _service_throttle('xisbn',$limit);
my $url = "http://xisbn.worldcat.org/webservices/xid/isbn/".$isbn."?method=getEditions&format=xml&fl=form,year,lang,ed";
$url.="&ai=".$affiliate_id if $affiliate_id;
unless ($reached_limit) {
$xisbn_response = _get_url($url,'xisbn');
}
}
# PINES ISBN (Experimental)
#if ( C4::Context->preference('PINESISBN') ) {
# my $url = "http://www.librarything.com/api/thingISBN/".$isbn;
# $gapines_response = _get_url($url,'thingisbn');
#}
$response->{isbn} = [ @{ $xisbn_response->{isbn} or [] }, @{ $syndetics_response->{isbn} or [] }, @{ $thing_response->{isbn} or [] }, @{ $gapines_response->{isbn} or [] } ];
my @xisbns;
my $unique_xisbns; # a hashref
# loop through each ISBN and scope to the local collection
for my $response_data( @{ $response->{ isbn } } ) {
next if $response_data->{'content'} eq $isbn;
next if $isbn eq $response_data;
next if $unique_xisbns->{ $response_data->{content} };
$unique_xisbns->{ $response_data->{content} }++;
my $xbiblio= _get_biblio_from_xisbn($response_data->{content});
push @xisbns, $xbiblio if $xbiblio;
}
return \@xisbns;
}
sub _get_url {
my ($url,$service_type) = @_;
my $ua = LWP::UserAgent->new(
timeout => 2
);
my $response = $ua->get($url);
if ($response->is_success) {
warn "WARNING could not retrieve $service_type $url" unless $response;
if ($response) {
my $xmlsimple = XML::Simple->new();
my $content = $xmlsimple->XMLin(
$response->content,
ForceArray => [ qw(isbn) ],
ForceContent => 1,
);
return $content;
}
} else {
warn "WARNING: URL Request Failed " . $response->status_line . "\n";
}
}
# Throttle services to the specified amount
sub _service_throttle {
my ($service_type,$daily_limit) = @_;
my $dbh = C4::Context->dbh;
my $sth = $dbh->prepare("SELECT service_count FROM services_throttle WHERE service_type=?");
$sth->execute($service_type);
my $count = 1;
while (my $counter = $sth->fetchrow_hashref()) {
$count = $counter->{service_count} if $counter->{service_count};
}
# we're over the limit
return 1 if $count >= $daily_limit;
# not over the limit
$count++;
$sth = $dbh->do("UPDATE services_throttle SET service_count=$count WHERE service_type='xisbn'");
return undef;
}
1;
__END__
=head1 NOTES
=head1 AUTHOR
Joshua Ferraro <jmf@liblime.com>
=cut
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