/**
* getRdf get the full BIBO RDF serialization of the collection of entries
* @param $format the serialization format
* @throws Exception if PHP_ZOTERO_ENTRIES_ARC_PATH is not defined
*/
public function getRdf($format = 'rdf/xml')
{
if (!defined('PHP_ZOTERO_ENTRIES_ARC_PATH')) {
throw new Exception('PHP_ZOTERO_ENTRIES_ARC_PATH must be defined and valid to use RDF methods');
}
require_once PHP_ZOTERO_ENTRIES_ARC_PATH;
switch ($format) {
case 'rdf/xml':
$ser = ARC2::getRDFXMLSerializer($this->arcConf);
break;
case 'rdf/json':
$ser = ARC2::getRDFJsonSerializer($this->arcConf);
break;
case 'turtle':
$ser = ARC2::getTurtleSerializer($this->arcConf);
break;
case 'ntriples':
$ser = ARC2::getNTriplesSerializer($this->arcConf);
break;
}
return $ser->getSerializedIndex($this->getArcIndex());
}
/**
* getItemAsRdf returns the BIBO RDF for the entire Zotero Item
* @param $format default 'rdf/xml' the rdf serialization to use
* @return string the RDF serialization
* @throw Exception if PHP_ZOTERO_ENTRIES_ARC_PATH is not defined
*/
public function getItemAsRdf($format = 'rdf/xml')
{
if (!defined('PHP_ZOTERO_ENTRIES_ARC_PATH')) {
throw new Exception('PHP_ZOTERO_ENTRIES_ARC_PATH must be defined and valid to use RDF methods');
}
if (!$this->arcIndex) {
$this->setRdf();
}
switch ($format) {
case 'rdf/xml':
$ser = ARC2::getRDFXMLSerializer($this->arcConf);
break;
case 'rdf/json':
$ser = ARC2::getRDFJsonSerializer($this->arcConf);
break;
case 'turtle':
$ser = ARC2::getTurtleSerializer($this->arcConf);
break;
case 'ntriples':
$ser = ARC2::getNTriplesSerializer($this->arcConf);
break;
}
return $ser->getSerializedIndex(array($this->itemUri => $this->arcIndex[$this->itemUri]));
}
