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package WebPAC::Input::OAI; |
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|
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use warnings; |
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use strict; |
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|
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use HTTP::OAI; |
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use HTTP::OAI::Metadata::OAI_DC; |
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use base qw/WebPAC::Common/; |
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use Carp qw/confess/; |
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use Data::Dump qw/dump/; |
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|
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=head1 NAME |
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|
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WebPAC::Input::OAI - read MARC records from OAI |
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|
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=cut |
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|
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our $VERSION = '0.00'; |
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|
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=head1 FUNCTIONS |
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|
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=head2 new |
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|
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my $input = new WebPAC::Input::OAI( |
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url => 'http://arXiv.org/oai2', |
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from => '2001-02-03', |
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until => '2001-04-10', |
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path => 'var/oai/arXiv', |
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} |
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|
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=cut |
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|
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sub new { |
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my $class = shift; |
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my $self = {@_}; |
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bless($self, $class); |
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|
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my $arg = {@_}; |
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|
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my $log = $self->_get_logger(); |
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$log->debug( 'arg = ', dump($arg) ); |
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|
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open(my $fh, '<', $arg->{path}); |
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if ( ! $fh ) { |
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$log->error("can't open $arg->{path}: $!"); |
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return; |
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} |
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|
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my $h = HTTP::OAI::Harvester->new( baseURL => $self->{url} ); |
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|
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my $list; |
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$list->{$_} = $self->{$_} foreach ( qw( from until ) ); |
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|
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$log->info("ListRecords ", dump($list)); |
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|
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my $response = $h->ListRecords( |
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metadataPrefix=>'oai_dc', |
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handlers=>{metadata=>'HTTP::OAI::Metadata::OAI_DC'}, |
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%$list, |
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); |
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|
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warn "## ",dump($response); |
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|
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if ( $response->is_error ) { |
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$log->logdie("Error harvesting $self->{url}: $response->message"); |
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} |
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|
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$self->{oai_response} = $response; |
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|
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$self ? return $self : return undef; |
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} |
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|
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=head2 fetch_rec |
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|
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Return record with ID C<$mfn> from database |
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|
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my $rec = $input->fetch_rec( $mfn ); |
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|
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=cut |
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|
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sub fetch_rec { |
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my $self = shift; |
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|
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my $mfn = shift; |
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|
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my $rec = $self->{oai_response}->next; |
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|
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my $row = $rec->metadata->dc; |
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warn "# row ",dump($row); |
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|
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push @{$row->{'000'}}, $mfn; |
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return $row; |
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} |
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|
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=head2 size |
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|
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Return number of records in database |
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|
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my $size = $isis->size; |
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|
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=cut |
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|
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sub size { |
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my $self = shift; |
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return $self->{oai_response}->resumptionToken->completeListSize; |
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} |
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|
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|
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=head1 AUTHOR |
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|
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Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >> |
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|
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=head1 COPYRIGHT & LICENSE |
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|
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Copyright 2011 Dobrica Pavlinusic, All Rights Reserved. |
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|
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This program is free software; you can redistribute it and/or modify it |
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under the same terms as Perl itself. |
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|
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=cut |
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|
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1; |
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