7 use CGI qw/:standard -oldstyle_urls/;
13 eval { require PerlIO::gzip };
17 unless ( C4::Context->preference('OAI-PMH') ) {
20 -type => 'text/plain; charset=utf-8',
22 -status => '404 OAI-PMH service is disabled',
24 "OAI-PMH service is disabled";
28 my @encodings = http('HTTP_ACCEPT_ENCODING');
29 if ( $GZIP && grep { defined($_) && $_ eq 'gzip' } @encodings ) {
31 -type => 'text/xml; charset=utf-8',
33 -Content-Encoding => 'gzip',
35 binmode( STDOUT, ":gzip" );
39 -type => 'text/xml; charset=utf-8',
44 binmode( STDOUT, ":utf8" );
45 my $repository = C4::OAI::Repository->new();
51 # Extends HTTP::OAI::ResumptionToken
52 # A token is identified by:
58 package C4::OAI::ResumptionToken;
65 use base ("HTTP::OAI::ResumptionToken");
69 my ($class, %args) = @_;
71 my $self = $class->SUPER::new(%args);
73 my ($metadata_prefix, $offset, $from, $until);
74 if ( $args{ resumptionToken } ) {
75 ($metadata_prefix, $offset, $from, $until)
76 = split( ':', $args{resumptionToken} );
79 $metadata_prefix = $args{ metadataPrefix };
80 $from = $args{ from } || '1970-01-01';
81 $until = $args{ until };
83 my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday) = gmtime( time );
84 $until = sprintf( "%.4d-%.2d-%.2d", $year+1900, $mon+1,$mday );
86 $offset = $args{ offset } || 0;
89 $self->{ metadata_prefix } = $metadata_prefix;
90 $self->{ offset } = $offset;
91 $self->{ from } = $from;
92 $self->{ until } = $until;
94 $self->resumptionToken(
95 join( ':', $metadata_prefix, $offset, $from, $until ) );
96 $self->cursor( $offset );
101 # __END__ C4::OAI::ResumptionToken
105 package C4::OAI::Identify;
113 use base ("HTTP::OAI::Identify");
116 my ($class, $repository) = @_;
118 my ($baseURL) = $repository->self_url() =~ /(.*)\?.*/;
119 my $self = $class->SUPER::new(
121 repositoryName => C4::Context->preference("LibraryName"),
122 adminEmail => C4::Context->preference("KohaAdminEmailAddress"),
123 MaxCount => C4::Context->preference("OAI-PMH:MaxCount"),
124 granularity => 'YYYY-MM-DD',
125 earliestDatestamp => '0001-01-01',
126 deletedRecord => 'no',
128 $self->description( "Koha OAI Repository" );
129 $self->compression( 'gzip' );
134 # __END__ C4::OAI::Identify
138 package C4::OAI::ListMetadataFormats;
145 use base ("HTTP::OAI::ListMetadataFormats");
148 my ($class, $repository) = @_;
150 my $self = $class->SUPER::new();
152 $self->metadataFormat( HTTP::OAI::MetadataFormat->new(
153 metadataPrefix => 'oai_dc',
154 schema => 'http://www.openarchives.org/OAI/2.0/oai_dc.xsd',
155 metadataNamespace => 'http://www.openarchives.org/OAI/2.0/oai_dc/'
157 $self->metadataFormat( HTTP::OAI::MetadataFormat->new(
158 metadataPrefix => 'marcxml',
159 schema => 'http://www.loc.gov/MARC21/slim http://www.loc.gov/ standards/marcxml/schema/MARC21slim.xsd',
160 metadataNamespace => 'http://www.loc.gov/MARC21/slim http://www.loc.gov/ standards/marcxml/schema/MARC21slim'
166 # __END__ C4::OAI::ListMetadataFormats
170 package C4::OAI::Record;
176 use HTTP::OAI::Metadata::OAI_DC;
178 use base ("HTTP::OAI::Record");
181 my ($class, $repository, $marcxml, $timestamp, %args) = @_;
183 my $self = $class->SUPER::new(%args);
185 $timestamp =~ s/ /T/, $timestamp .= 'Z';
186 $self->header( new HTTP::OAI::Header(
187 identifier => $args{identifier},
188 datestamp => $timestamp,
191 my $parser = XML::LibXML->new();
192 my $record_dom = $parser->parse_string( $marcxml );
193 if ( $args{metadataPrefix} ne 'marcxml' ) {
194 $record_dom = $repository->oai_dc_stylesheet()->transform( $record_dom );
196 $self->metadata( HTTP::OAI::Metadata->new( dom => $record_dom ) );
201 # __END__ C4::OAI::Record
205 package C4::OAI::GetRecord;
212 use base ("HTTP::OAI::GetRecord");
216 my ($class, $repository, %args) = @_;
218 my $self = HTTP::OAI::GetRecord->new(%args);
220 my $dbh = C4::Context->dbh;
221 my $sth = $dbh->prepare("
222 SELECT marcxml, timestamp
224 WHERE biblionumber=? " );
225 my $prefix = $repository->{koha_identifier} . ':';
226 my ($biblionumber) = $args{identifier} =~ /^$prefix(.*)/;
227 $sth->execute( $biblionumber );
228 my ($marcxml, $timestamp);
229 unless ( ($marcxml, $timestamp) = $sth->fetchrow ) {
230 return HTTP::OAI::Response->new(
231 requestURL => $repository->self_url(),
232 errors => [ new HTTP::OAI::Error(
233 code => 'idDoesNotExist',
234 message => "There is no biblio record with this identifier",
239 #$self->header( HTTP::OAI::Header->new( identifier => $args{identifier} ) );
240 $self->record( C4::OAI::Record->new(
241 $repository, $marcxml, $timestamp, %args ) );
246 # __END__ C4::OAI::GetRecord
250 package C4::OAI::ListIdentifiers;
257 use base ("HTTP::OAI::ListIdentifiers");
261 my ($class, $repository, %args) = @_;
263 my $self = HTTP::OAI::ListIdentifiers->new(%args);
265 my $token = new C4::OAI::ResumptionToken( %args );
266 my $dbh = C4::Context->dbh;
267 my $sql = "SELECT biblionumber, timestamp
269 WHERE timestamp >= ? AND timestamp <= ?
270 LIMIT " . $repository->{koha_max_count} . "
271 OFFSET " . $token->{offset};
272 my $sth = $dbh->prepare( $sql );
273 $sth->execute( $token->{from}, $token->{until} );
275 my $pos = $token->{offset};
276 while ( my ($biblionumber, $timestamp) = $sth->fetchrow ) {
277 $timestamp =~ s/ /T/, $timestamp .= 'Z';
278 $self->identifier( new HTTP::OAI::Header(
279 identifier => $repository->{ koha_identifier} . ':' . $biblionumber,
280 datestamp => $timestamp,
284 $self->resumptionToken( new C4::OAI::ResumptionToken(
285 metadataPrefix => $token->{metadata_prefix},
286 from => $token->{from},
287 until => $token->{until},
293 # __END__ C4::OAI::ListIdentifiers
297 package C4::OAI::ListRecords;
304 use base ("HTTP::OAI::ListRecords");
308 my ($class, $repository, %args) = @_;
310 my $self = HTTP::OAI::ListRecords->new(%args);
312 my $token = new C4::OAI::ResumptionToken( %args );
313 my $dbh = C4::Context->dbh;
314 my $sql = "SELECT biblionumber, marcxml, timestamp
316 WHERE timestamp >= ? AND timestamp <= ?
317 LIMIT " . $repository->{koha_max_count} . "
318 OFFSET " . $token->{offset};
319 my $sth = $dbh->prepare( $sql );
320 $sth->execute( $token->{from}, $token->{until} );
322 my $pos = $token->{offset};
323 while ( my ($biblionumber, $marcxml, $timestamp) = $sth->fetchrow ) {
324 $self->record( C4::OAI::Record->new(
325 $repository, $marcxml, $timestamp,
326 identifier => $repository->{ koha_identifier } . ':' . $biblionumber,
327 metadataPrefix => $token->{metadata_prefix}
331 $self->resumptionToken( new C4::OAI::ResumptionToken(
332 metadataPrefix => $token->{metadata_prefix},
333 from => $token->{from},
334 until => $token->{until},
340 # __END__ C4::OAI::ListRecords
344 package C4::OAI::Repository;
346 use base ("HTTP::OAI::Repository");
353 use HTTP::OAI::Repository qw/:validate/;
355 use XML::SAX::Writer;
358 use CGI qw/:standard -oldstyle_urls/;
366 C4::OAI::Repository - Handles OAI-PMH requests for a Koha database.
370 use C4::OAI::Repository;
372 my $repository = C4::OAI::Repository->new();
376 This object extend HTTP::OAI::Repository object.
383 my ($class, %args) = @_;
384 my $self = $class->SUPER::new(%args);
386 $self->{ koha_identifier } = C4::Context->preference("OAI-PMH:archiveID");
387 $self->{ koha_max_count } = C4::Context->preference("OAI-PMH:MaxCount");
388 $self->{ koha_metadata_format } = ['oai_dc', 'marcxml'];
390 # Check for grammatical errors in the request
391 my @errs = validate_request( CGI::Vars() );
393 # Is metadataPrefix supported by the respository?
394 my $mdp = param('metadataPrefix') || '';
395 if ( $mdp && !grep { $_ eq $mdp } @{$self->{ koha_metadata_format }} ) {
396 push @errs, new HTTP::OAI::Error(
397 code => 'cannotDisseminateFormat',
398 message => "Dissemination as '$mdp' is not supported",
404 $response = HTTP::OAI::Response->new(
405 requestURL => self_url(),
410 my %attr = CGI::Vars();
411 my $verb = delete( $attr{verb} );
412 if ( grep { $_ eq $verb } qw( ListSets ) ) {
413 $response = HTTP::OAI::Response->new(
414 requestURL => $self->self_url(),
415 errors => [ new HTTP::OAI::Error(
416 code => 'noSetHierarchy',
417 message => "Koha repository doesn't have sets",
421 elsif ( $verb eq 'Identify' ) {
422 $response = C4::OAI::Identify->new( $self );
424 elsif ( $verb eq 'ListMetadataFormats' ) {
425 $response = C4::OAI::ListMetadataFormats->new( $self );
427 elsif ( $verb eq 'GetRecord' ) {
428 $response = C4::OAI::GetRecord->new( $self, %attr );
430 elsif ( $verb eq 'ListRecords' ) {
431 $response = C4::OAI::ListRecords->new( $self, %attr );
433 elsif ( $verb eq 'ListIdentifiers' ) {
434 $response = C4::OAI::ListIdentifiers->new( $self, %attr );
438 $response->set_handler( XML::SAX::Writer->new( Output => *STDOUT ) );
447 # XSLT stylesheet used to transform MARCXML record into OAI Dublin Core.
448 # The object is constructed the fist time this method is called.
450 # Styleeet file is located in /koha-tmpl/intranet-tmpl/prog/en/xslt/ directory.
451 # Its name is constructed with 'marcflavour' syspref:
452 # - MARC21slim2OAIDC.xsl
453 # - UNIMARCslim2OADIC.xsl
455 sub oai_dc_stylesheet {
458 unless ( $self->{ oai_dc_stylesheet } ) {
459 my $xslt_file = C4::Context->config('intranetdir') .
460 "/koha-tmpl/intranet-tmpl/prog/en/xslt/" .
461 C4::Context->preference('marcflavour') .
463 my $parser = XML::LibXML->new();
464 my $xslt = XML::LibXSLT->new();
465 my $style_doc = $parser->parse_file( $xslt_file );
466 my $stylesheet = $xslt->parse_stylesheet( $style_doc );
467 $self->{ oai_dc_stylesheet } = $stylesheet;
470 return $self->{ oai_dc_stylesheet };