protected function getNodeForRedlandNode($redlandNode)
{
if (librdf_node_is_literal($redlandNode)) {
return new Literal($redlandNode);
} elseif (librdf_node_is_resource($redlandNode)) {
return new NamedNode($redlandNode);
} elseif (librdf_node_is_blank($redlandNode)) {
return new BlankNode($redlandNode);
}
}
/**
* Create a new blank node with an optional identifier.
*
* @param mixed $nodeId The nodeId value or librdf_node resource
* @return void
* @throws LibRDF_Error If unable to create a new node
* @access public
*/
public function __construct($nodeId = NULL)
{
if ($nodeId !== NULL) {
if (is_resource($nodeId)) {
if (librdf_node_is_blank($nodeId)) {
$this->node = $nodeId;
} else {
throw new LibRDF_Error("Resource argument not a valid" . " librdf_node blank node");
}
} else {
$this->node = librdf_new_node_from_blank_identifier(librdf_php_get_world(), $nodeId);
}
} else {
$this->node = librdf_new_node(librdf_php_get_world());
}
if (!$this->node) {
throw new LibRDF_Error("Unable to create new blank node");
}
}
function _node($node)
{
$r = array();
if (librdf_node_is_resource($node)) {
$r['type'] = 'uri';
$r['value'] = librdf_uri_to_string(librdf_node_get_uri($node));
} elseif (librdf_node_is_literal($node)) {
$r['type'] = 'literal';
$r['value'] = librdf_node_get_literal_value($node);
$dt = librdf_node_get_literal_value_datatype_uri($node);
if ($dt) {
$r['datatype'] = librdf_uri_to_string($dt);
}
} elseif (librdf_node_is_blank($node)) {
$r['type'] = 'bnode';
$r['value'] = librdf_node_get_blank_identifier($node);
}
return $r;
}