public function serialize(&$return = null, $format = 'xml')
{
$CI =& get_instance();
if ('object' != gettype($CI->rdf_store)) {
$CI->load->library('RDF_Store', 'rdf_store');
}
$output = array();
if (!empty($return)) {
foreach ($return as $key => $row) {
foreach ($row as $field => $value) {
if ('@' == substr($field, 0, 1)) {
continue;
}
$output[$key][fromNS($field, $this->ns)] = $value;
}
}
}
$return = $CI->rdf_store->serialize($output, '', $format);
// by reference
return $return;
// by value
}
/**
* Serialize an RDF structure (e.g, to RDF-XML or RDF-JSON)
* TODO: Shared function with /rdf, move to model?
*/
private function _rdf_serialize(&$return, $prefix = '')
{
if (empty($return)) {
$this->_output_error(StatusCodes::HTTP_INTERNAL_SERVER_ERROR);
}
$output = array();
foreach ($return as $key => $row) {
foreach ($row as $field => $value) {
if (substr($field, 0, 1) == '@') {
continue;
}
$output[$key][fromNS($field, $this->ns)] = $value;
}
}
$return = $this->rdf_store->serialize($output, $prefix, $this->data['format']);
}
