C4/XISBN.pm

   1 package 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
   8 # under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 3 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # Koha is distributed in the hope that it will be useful, but
  13 # WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with Koha; if not, see <http://www.gnu.org/licenses>.
  19
  20 use XML::Simple;
  21 #use LWP::Simple;
  22 use C4::Biblio;
  23 use C4::Koha;
  24 use C4::Search;
  25 use C4::External::Syndetics qw(get_syndetics_editions);
  26 use LWP::UserAgent;
  27 use HTTP::Request::Common;
  28
  29 use strict;
  30 #use warnings; FIXME - Bug 2505
  31 use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS);
  32
  33 BEGIN {
  34         require Exporter;
  35     $VERSION = 3.07.00.049;
  36         @ISA = qw(Exporter);
  37         @EXPORT_OK = qw(
  38                 &get_xisbns
  39         &get_biblionumber_from_isbn
  40         );
  41 }
  42
  43 sub get_biblionumber_from_isbn {
  44     my $isbn = shift;
  45         $isbn.='%';
  46     my @biblionumbers;
  47     my $dbh=C4::Context->dbh;
  48     my $query = "SELECT biblionumber FROM biblioitems WHERE isbn LIKE ? LIMIT 10";
  49     my $sth = $dbh->prepare($query);
  50     $sth->execute($isbn);
  51         return $sth->fetchall_arrayref({});
  52 }
  53 =head1 NAME
  54
  55 C4::XISBN - Functions for retrieving XISBN content in Koha
  56
  57 =head1 FUNCTIONS
  58
  59 This module provides facilities for retrieving ThingISBN and XISBN content in Koha
  60
  61 =cut
  62
  63 sub _get_biblio_from_xisbn {
  64     my $xisbn = shift;
  65     my $dbh = C4::Context->dbh;
  66
  67     my ( $errors, $results, $total_hits ) = C4::Search::SimpleSearch( "nb=$xisbn", 0, 1 );
  68     return unless ( !$errors && scalar @$results );
  69
  70     my $record = C4::Search::new_record_from_zebra( 'biblioserver', $results->[0] );
  71     my $biblionumber = C4::Biblio::get_koha_field_from_marc('biblio', 'biblionumber', $record, '');
  72     return unless $biblionumber;
  73
  74     my $xbiblio = GetBiblioData($biblionumber);
  75     return unless $xbiblio;
  76     $xbiblio->{normalized_isbn} = GetNormalizedISBN($xbiblio->{isbn});
  77     return $xbiblio;
  78 }
  79
  80 =head1 get_xisbns($isbn);
  81
  82 =head2 $isbn is an ISBN string
  83
  84 =cut
  85
  86 sub get_xisbns {
  87     my ( $isbn ) = @_;
  88     my ($response,$thing_response,$xisbn_response,$syndetics_response);
  89     # THINGISBN
  90     if ( C4::Context->preference('ThingISBN') ) {
  91         my $url = "http://www.librarything.com/api/thingISBN/".$isbn;
  92         $thing_response = _get_url($url,'thingisbn');
  93     }
  94
  95         if ( C4::Context->preference("SyndeticsEnabled") && C4::Context->preference("SyndeticsEditions") ) {
  96         my $syndetics_preresponse = &get_syndetics_editions($isbn);
  97                 my @syndetics_response;
  98                 for my $response (@$syndetics_preresponse) {
  99                         push @syndetics_response, {content => $response->{a}};
 100                 }
 101                 $syndetics_response = {isbn => \@syndetics_response};
 102         }
 103
 104     # XISBN
 105     if ( C4::Context->preference('XISBN') ) {
 106         my $affiliate_id=C4::Context->preference('OCLCAffiliateID');
 107         my $limit = C4::Context->preference('XISBNDailyLimit') || 999;
 108         my $reached_limit = _service_throttle('xisbn',$limit);
 109         my $url = "http://xisbn.worldcat.org/webservices/xid/isbn/".$isbn."?method=getEditions&format=xml&fl=form,year,lang,ed";
 110         $url.="&ai=".$affiliate_id if $affiliate_id;
 111         unless ($reached_limit) {
 112             $xisbn_response = _get_url($url,'xisbn');
 113         }
 114     }
 115
 116     $response->{isbn} = [ @{ $xisbn_response->{isbn} or [] },  @{ $syndetics_response->{isbn} or [] }, @{ $thing_response->{isbn} or [] } ];
 117     my @xisbns;
 118     my $unique_xisbns; # a hashref
 119
 120     # loop through each ISBN and scope to the local collection
 121     for my $response_data( @{ $response->{ isbn } } ) {
 122         next if $response_data->{'content'} eq $isbn;
 123         next if $isbn eq $response_data;
 124         next if $unique_xisbns->{ $response_data->{content} };
 125         $unique_xisbns->{ $response_data->{content} }++;
 126         my $xbiblio= _get_biblio_from_xisbn($response_data->{content});
 127         push @xisbns, $xbiblio if $xbiblio;
 128     }
 129     return \@xisbns;
 130 }
 131
 132 sub _get_url {
 133     my ($url,$service_type) = @_;
 134     my $ua = LWP::UserAgent->new(
 135         timeout => 2
 136         );
 137
 138     my $response = $ua->get($url);
 139     if ($response->is_success) {
 140         warn "WARNING could not retrieve $service_type $url" unless $response;
 141         if ($response) {
 142             my $xmlsimple = XML::Simple->new();
 143             my $content = $xmlsimple->XMLin(
 144             $response->content,
 145             ForceArray => [ qw(isbn) ],
 146             ForceContent => 1,
 147             );
 148             return $content;
 149         }
 150     } else {
 151         warn "WARNING: URL Request Failed " . $response->status_line . "\n";
 152     }
 153
 154 }
 155
 156
 157 # Throttle services to the specified amount
 158 sub _service_throttle {
 159     my ($service_type,$daily_limit) = @_;
 160     my $dbh = C4::Context->dbh;
 161     my $sth = $dbh->prepare(q{ SELECT service_count FROM services_throttle WHERE service_type=? });
 162     $sth->execute($service_type);
 163     my $count = 0;
 164
 165     if ($sth->rows == 0) {
 166         # initialize services throttle
 167         my $sth2 = $dbh->prepare(q{ INSERT INTO services_throttle (service_type, service_count) VALUES (?, ?) });
 168         $sth2->execute($service_type, $count);
 169     } else {
 170         $count = $sth->fetchrow_array;
 171     }
 172
 173     # we're over the limit
 174     return 1 if $count >= $daily_limit;
 175
 176     # not over the limit
 177     $count++;
 178     my $sth3 = $dbh->prepare(q{ UPDATE services_throttle SET service_count=? WHERE service_type=? });
 179     $sth3->execute($count, $service_type);
 180
 181     return undef;
 182 }
 183
 184 1;
 185 __END__
 186
 187 =head1 NOTES
 188
 189 =cut
 190
 191 =head1 AUTHOR
 192
 193 Joshua Ferraro <jmf@liblime.com>
 194
 195 =cut
 196