/**
* @param ExtendedGraph $graph
*/
public function label_graph(ExtendedGraph &$graph)
{
$labelled_properties = array();
$index = $graph->get_index();
foreach ($index as $s => $p_list) {
foreach ($p_list as $p => $val) {
if (!array_key_exists($p, $labelled_properties)) {
if (array_key_exists($p, $this->_labels)) {
if (!$graph->subject_has_property($p, RDFS_LABEL)) {
$graph->add_literal_triple($p, RDFS_LABEL, $this->_labels[$p][0]);
}
if (!$graph->subject_has_property($p, 'http://purl.org/net/vocab/2004/03/label#plural')) {
if (count($this->_labels[$p]) > 1) {
$graph->add_literal_triple($p, 'http://purl.org/net/vocab/2004/03/label#plural', $this->_labels[$p][1]);
} else {
$graph->add_literal_triple($p, 'http://purl.org/net/vocab/2004/03/label#plural', $this->_labels[$p][0] . 's');
}
}
if (!$graph->subject_has_property($p, 'http://purl.org/net/vocab/2004/03/label#inverseSingular')) {
if (count($this->_labels[$p]) > 2) {
$graph->add_literal_triple($p, 'http://purl.org/net/vocab/2004/03/label#inverseSingular', $this->_labels[$p][2]);
} else {
$graph->add_literal_triple($p, 'http://purl.org/net/vocab/2004/03/label#inverseSingular', 'is ' . $this->_labels[$p][0] . ' of');
}
}
$labelled_properties[$p] = 1;
} else {
if (preg_match('~^http://www.w3.org/1999/02/22-rdf-syntax-ns#_(.+)$~', $p, $m)) {
$graph->add_literal_triple($p, RDFS_LABEL, 'Item ' . $m[1]);
$labelled_properties[$p] = 1;
}
}
}
}
}
}
