package C4::XISBN; # Copyright (C) 2007 LibLime # Joshua Ferraro # # 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., # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. use XML::Simple; #use LWP::Simple; use C4::Biblio; use C4::Koha; use C4::External::Syndetics qw(get_syndetics_editions); use LWP::UserAgent; use HTTP::Request::Common; use strict; #use warnings; FIXME - Bug 2505 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}); } return ($xbiblio); } =head1 get_xisbns($isbn); =head2 $isbn is an ISBN string =cut sub get_xisbns { my ( $isbn ) = @_; my ($response,$thing_response,$xisbn_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') || 999; 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'); } } $response->{isbn} = [ @{ $xisbn_response->{isbn} or [] }, @{ $syndetics_response->{isbn} or [] }, @{ $thing_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 =cut =head1 AUTHOR Joshua Ferraro =cut