NAME Catmandu::FedoraCommons - Low level Catmandu interface to the Fedora Commons REST API SYNOPSIS # Use the command line tools $ fedora_admin.pl # Or the low-level API-s use Catmandu::FedoraCommons; my $fedora = Catmandu::FedoraCommons->new('http://localhost:8080/fedora','fedoraAdmin','fedoraAdmin'); my $result = $fedora->findObjects(terms=>'*'); die $result->error unless $result->is_ok; my $hits = $result->parse_content(); for my $hit (@{ $hits->{results} }) { printf "%s\n" , $hit->{pid}; } # Or using the higher level Catmandu::Store codes you can do things like use Catmandu::Store::FedoraCommons; my $store = Catmandu::Store::FedoraCommons->new( baseurl => 'http://localhost:8080/fedora', username => 'fedoraAdmin', password => 'fedoraAdmin', model => 'Catmandu::Store::FedoraCommons::DC' # default ); $store->bag->each(sub { my $model = shift; printf "title: %s\n" , join("" , @{ $model->{title} }); printf "creator: %s\n" , join("" , @{ $model->{creator} }); my $pid = $model->{_id}; my $ds = $store->fedora->listDatastreams(pid => $pid)->parse_content; }); my $obj = $store->bag->add({ title => ['The Master and Margarita'] , creator => ['Bulgakov, Mikhail'] } ); $store->fedora->addDatastream(pid => $obj->{_id} , url => "http://myurl/rabbit.jpg"); # Add your own perl version of a descriptive metadata model by implementing your own # model that can do a serialize and deserialize. DESCRIPTION Catmandu::FedoraCommons is an Perl API to the Fedora Commons REST API (http://www.fedora.info/). Supported versions are Fedora Commons 3.6 or better. ACCESS METHODS new($base_url,$username,$password) Create a new Catmandu::FedoraCommons connecting to the baseurl of the Fedora Commons installation. findObjects(query => $query, maxResults => $maxResults) findObjects(terms => $terms , maxResults => $maxResults) Execute a search query on the Fedora Commons server. One of 'query' or 'terms' is required. Query contains a phrase optionally including '*' and '?' wildcards. Terms contain one or more conditions separated by space. A condition is a field followed by an operator, followed by a value. The = operator will match if the field's entire value matches the value given. The ~ operator will match on phrases within fields, and accepts the ? and * wildcards. The <, >, <=, and >= operators can be used with numeric values, such as dates. Examples: query => "*o*" query => "?edora" terms => "pid~demo:* description~fedora" terms => "cDate>=1976-03-04 creator~*n*" terms => "mDate>2002-10-2 mDate<2002-10-2T12:00:00" Optionally a maxResults parameter may be specified limiting the number of search results (default is 20). This method returns a Catmandu::FedoraCommons::Response object with a Catmandu::FedoraCommons::Model::findObjects model. resumeFindObjects(sessionToken => $token) This method returns the next batch of search results. This method returns a Catmandu::FedoraCommons::Response object with a Catmandu::FedoraCommons::Model::findObjects model. Example: my $result = $fedora->findObjects(terms=>'*'); die $result->error unless $result->is_ok; my $hits = $result->parse_content(); for my $hit (@{ $hits->{results} }) { printf "%s\n" , $hit->{pid}; } my $result = $fedora->resumeFindObjects(sessionToken => $hits->{token}); my $hits = $result->parse_content(); ... getDatastreamDissemination(pid => $pid, dsID=> $dsID, asOfDateTime => $date, callback => \&callback) This method returns a datastream from the Fedora Commons repository. Required parameters are the identifier of the object $pid and the identifier of the datastream $dsID. Optionally a datestamp $asOfDateTime can be provided. This method returns a Catmandu::FedoraCommons::Response object with a Catmandu::FedoraCommons::Model::getDatastreamDissemination model. To stream the contents of the datastream a callback function can be provided. Example: $fedora->getDatastreamDissemination(pid => 'demo:5', dsID => 'VERYHIGHRES', callback => \&process); sub process { my ($data, $response, $protocol) = @_; print $data; } getDissemination(pid => $pid , sdefPid => $sdefPid , method => $method , %method_parameters , callback => \&callback) This method execute a dissemination method on the Fedora Commons server. Required parametes are the object $pid, the service definition $sdefPid and the name of the method $method. Optionally further method parameters can be provided and a callback function to stream the results (see getDatastreamDissemination). This method returns a Catmandu::FedoraCommons::Response object with a Catmandu::FedoraCommons::Model::getDatastreamDissemination model. Example: $fedora->getDissemination(pid => 'demo:29', sdefPid => 'demo:27' , method => 'resizeImage' , width => 100, callback => \&process); getObjectHistory(pid => $pid) This method returns the version history of an object. Required is the object $pid. This method returns a Catmandu::FedoraCommons::Response object with a Catmandu::FedoraCommons::Model::getObjectHistory model. Example: my $obj = $fedora->getObjectHistory(pid => 'demo:29')->parse_content; for @{$obj->{objectChangeDate}} {} print "$_\n; } getObjectProfile(pid => $pid, asOfDateTime => $date) This method returns a detailed description of an object. Required is the object $pid. Optionally a version date asOfDateTime can be provided. This method returns a Catmandu::FedoraCommons::Response object with a Catmandu::FedoraCommons::Model::getObjectProfile model. Example: my $obj = $fedora->getObjectProfile(pid => 'demo:29')->parse_content; printf "Label: %s\n" , $obj->{objLabel}; listDatastreams(pid => $pid, asOfDateTime => $date) This method returns a list of datastreams provided in the object. Required is the object $pid. Optionally a version date asOfDateTime can be provided. This method returns a Catmandu::FedoraCommons::Response object with a Catmandu::FedoraCommons::Model::listDatastreams model. Example: my $obj = $fedora->listDatastreams(pid => 'demo:29')->parse_content; for (@{ $obj->{datastream}} ) { printf "Label: %s\n" , $_->{label}; } listMethods(pid => $pid , sdefPid => $sdefPid , asOfDateTime => $date) This method return a list of methods that can be executed on an object. Required is the object $pid and the object $sdefPid. Optionally a version date asOfDateTime can be provided. This method returns a Catmandu::FedoraCommons::Response object with a Catmandu::FedoraCommons::Model::listMethods model. Example: my $obj = $fedora->listMethods(pid => 'demo:29')->parse_content; for ( @{ $obj->{sDef} }) { printf "[%s]\n" , $_->{$pid}; for my $m ( @{ $_->{method} } ) { printf "\t%s\n" , $m->{name}; } } MODIFY METHODS addDatastream(pid => $pid , dsID => $dsID, url => $remote_location, %args) addDatastream(pid => $pid , dsID => $dsID, file => $filename , %args) addDatastream(pid => $pid , dsID => $dsID, xml => $xml , %args) This method adds a data stream to the object. Required parameters are the object $pid, a new datastream $dsID and a remote $url, a local $file or an $xml string which contains the content. Optionally any of these datastream modifiers may be provided: controlGroup, altIDs, dsLabel, versionable, dsState, formatURI, checksumType, checksum, mimeType, logMessage. See: https://wiki.duraspace.org/display/FEDORA36/REST+API for more information. This method returns a Catmandu::FedoraCommons::Response object with a Catmandu::FedoraCommons::Model::datastreamProfile model. Example: my $obj = $fedora->addDatastream(pid => 'demo:29', dsID => 'TEST' , file => 'README', mimeType => 'text/plain')->parse_content; print "Uploaded at: %s\n" , $obj->{dateTime}; addRelationship(pid => $pid, relation => [ $subject, $predicate, $object] [, dataType => $dataType]) This methods adds a triple to the 'RELS-EXT' data stream of the object. Requires parameters are the object $pid and a relation as a triple ARRAY reference. Optionally the $datatype of the literal may be provided. This method returns a Catmandu::FedoraCommons::Response object with a Catmandu::FedoraCommons::Model::addRelationship model. Example: $fedora->addRelationship(pid => 'demo:29' , relation => [ 'info:fedora/demo:29' , 'http://my.org/name' , 'Peter']); export(pid => $pid [, format => $format , context => $context , encoding => $encoding]) This method exports the data model of the object in FOXML,METS or ATOM. Required is $pid of the object. Optionally a $context may be provided and the $format of the export. See: https://wiki.duraspace.org/display/FEDORA36/REST+API for more information. This method returns a Catmandu::FedoraCommons::Response object with a Catmandu::FedoraCommons::Model::export model. Example: my $res = $fedora->export(pid => 'demo:29'); print $res->raw; print "%s\n" , $res->parse_content->{objectProperties}->{label}; getDatastream(pid => $pid, dsID => $dsID , %args) This method return metadata about a data stream. Required is the object $pid and the $dsID of the data stream. Optionally a version 'asOfDateTime' can be provided and a 'validateChecksum' check. See: https://wiki.duraspace.org/display/FEDORA36/REST+API for more information. This method returns a Catmandu::FedoraCommons::Response object with a Catmandu::FedoraCommons::Model::datastreamProfile model. Example: my $obj = $fedora->getDatastream(pid => 'demo:29', dsID => 'DC')->parse_content; printf "Label: %s\n" , $obj->{profile}->{dsLabel}; getDatastreamHistory(pid => $pid , dsID => $dsID , %args) This method returns the version history of a data stream. Required paramter is the $pid of the object and the $dsID of the data stream. This method returns a Catmandu::FedoraCommons::Response object with a Catmandu::FedoraCommons::Model::datastreamHistory model. Example: my $obj = $fedora->getDatastreamHistory(pid => 'demo:29', dsID => 'DC')->parse_content; for (@{ $obj->{profile} }) { printf "Version: %s\n" , $_->{dsCreateDate}; } getNextPID(namespace => $namespace, numPIDs => $numPIDs) This method generates a new pid. Optionally a 'namespace' can be provided and the required 'numPIDs' you need. This method returns a Catmandu::FedoraCommons::Response object with a Catmandu::FedoraCommons::Model::pidList model. Example: my $pid = $fedora->getNextPID()->parse_content->[0]; getObjectXML(pid => $pid) This method exports the data model of the object in FOXML format. Required is $pid of the object. This method returns a Catmandu::FedoraCommons::Response object . Example: my $res = $fedora->getObjectXML(pid => 'demo:29'); print $res->raw; getRelationships(pid => $pid [, relation => [$subject, $predicate, undef] , format => $format ]) This method returns all RELS-EXT triples for an object. Required parameter is the $pid of the object. Optionally the triples may be filetered using the 'relation' parameter. Format defines the returned format. See: https://wiki.duraspace.org/display/FEDORA36/REST+API for more information. This method returns a Catmandu::FedoraCommons::Response object with a Catmandu::FedoraCommons::Model::getRelationships model. Example: my $obj = $fedora->getRelationships(pid => 'demo:29')->parse_content; my $iter = $obj->get_statements(); print "Names of things:\n"; while (my $st = $iter->next) { my $s = $st->subject; my $name = $st->object; print "The name of $s is $name\n"; } ingest(pid => $pid , file => $filename , xml => $xml , format => $format , %args) ingest(pid => 'new' , file => $filename , xml => $xml , format => $format , %args) This method ingest an object into Fedora Commons. Required is the $pid of the new object (which can be the string 'new' when Fedora has to generate a new pid), and the $filename or $xml to upload writen as $format. Optionally the following parameters can be provided: label, encoding, namespace, ownerId, logMessage. See: https://wiki.duraspace.org/display/FEDORA36/REST+API for more information. This method returns a Catmandu::FedoraCommons::Response object with a Catmandu::FedoraCommons::Model::ingest model. Example: my $obj = $fedora->ingest(pid => 'new', file => 't/obj_demo_40.zip', format => 'info:fedora/fedora-system:ATOMZip-1.1')->parse_content; printf "created: %s\n" , $obj->{pid}; modifyDatastream(pid => $pid , dsID => $dsID, url => $remote_location, %args) modifyDatastream(pid => $pid , dsID => $dsID, file => $filename , %args) modifyDatastream(pid => $pid , dsID => $dsID, xml => $xml , %args) This method updated a data stream in the object. Required parameters are the object $pid, a new datastream $dsID and a remote $url, a local $file or an $xml string which contains the content. Optionally any of these datastream modifiers may be provided: controlGroup, altIDs, dsLabel, versionable, dsState, formatURI, checksumType, checksum, mimeType, logMessage. See: https://wiki.duraspace.org/display/FEDORA36/REST+API for more information. This method returns a Catmandu::FedoraCommons::Response object with a Catmandu::FedoraCommons::Model::datastreamProfile model. Example: my $obj = $fedora->modifyDatastream(pid => 'demo:29', dsID => 'TEST' , file => 'README', mimeType => 'text/plain')->parse_content; print "Uploaded at: %s\n" , $obj->{dateTime}; modifyObject(pid => $pid, label => $label , ownerId => ownerId , state => $state , logMessage => $logMessage , lastModifiedDate => $lastModifiedDate) This method updated the metadata of an object. Required parameter is the $pid of the object. Optionally one or more of label, ownerId, state, logMessage and lastModifiedDate can be provided. This method returns a Catmandu::FedoraCommons::Response object with a Catmandu::FedoraCommons::Model::modifyObject model. Example: $fedora->modifyObject(pid => 'demo:29' , state => 'I'); purgeDatastream(pid => $pid , dsID => $dsID , startDT => $startDT , endDT => $endDT , logMessage => $logMessage) This method purges a data stream from an object. Required parameters is the $pid of the object and the $dsID of the data stream. Optionally a range $startDT to $endDT versions can be provided to be deleted. See: https://wiki.duraspace.org/display/FEDORA36/REST+API for more information. This method returns a Catmandu::FedoraCommons::Response object with a Catmandu::FedoraCommons::Model::purgeDatastream model. Example: $fedora->purgeDatastream(pid => 'demo:29', dsID => 'TEST')->parse_content; purgeObject(pid => $pid, logMessage => $logMessage) This method purges an object from Fedora Commons. Required parameter is the $pid of the object. Optionally a $logMessage can be provided. This method returns a Catmandu::FedoraCommons::Response object with a Catmandu::FedoraCommons::Model::purgeObject model. Example: $fedora->purgeObject(pid => 'demo:29'); purgeRelationship(pid => $pid, relation => [ $subject, $predicate, $object] [, dataType => $dataType]) This method removes a triple from the RELS-EXT data stream of an object. Required parameters are the $pid of the object and the relation to be deleted. Optionally the $dataType of the literal can be provided. This method returns a Catmandu::FedoraCommons::Response object with a Catmandu::FedoraCommons::Model::purgeRelationship model. Example: $fedora->purgeRelationship(pid => 'demo:29' , relation => [ 'info:fedora/demo:29' , 'http://my.org/name' , 'Peter']) setDatastreamState(pid => $pid, dsID => $dsID, dsState => $dsState) This method can be used to put a data stream on/offline. Required parameters are the $pid of the object , the $dsID of the data stream and the required new $dsState ((A)ctive, (I)nactive, (D)eleted). This method returns a Catmandu::FedoraCommons::Response object with a Catmandu::FedoraCommons::Model::datastreamProfile model. Example: $fedora->setDatastreamState(pid => 'demo:29' , dsID => 'url' , dsState => 'I'); setDatastreamVersionable(pid => $pid, dsID => $dsID, versionable => $versionable) This method updates the versionable state of a data stream. Required parameters are the $pid of the object, the $dsID of the data stream and the new $versionable (true|false) state. This method returns a Catmandu::FedoraCommons::Response object with a Catmandu::FedoraCommons::Model::datastreamProfile model. Example: $fedora->setDatastreamVersionable(pid => 'demo:29' , dsID => 'url' , versionable => 'false'); validate(pid => $pid) This method can be used to validate the content of an object. Required parameter is the $pid of the object. This method returns a Catmandu::FedoraCommons::Response object with a Catmandu::FedoraCommons::Model::validate model. Example: my $obj = $fedora->validate(pid => 'demo:29')->parse_content; print "Is valid: %s\n" , $obj->{valid}; upload(file => $file) This method uploads a file to the Fedora Server. Required parameter is the $file name. This method returns a Catmandu::FedoraCommons::Response object with a Catmandu::FedoraCommons::Model::upload- model. Example: my $obj = $fedora->upload(file => 't/marc.xml')->parse_content; print "Upload id: %s\n" , $obj->{id}; SEE ALSO Catmandu::FedoraCommons::Response, Catmandu::Model::findObjects, Catmandu::Model::getObjectHistory, Catmandu::Model::getObjectPrifule, Catmandu::Model::listDatastreams, Catmandu::Model::listMethods AUTHOR * Patrick Hochstenbach, LICENSE AND COPYRIGHT This program is free software; you can redistribute it and/or modify it under the terms of either: the GNU General Public License as published by the Free Software Foundation; or the Artistic License. See http://dev.perl.org/licenses/ for more information.