/** Add a literal value as a property of a resource
*
* The resource can either be a resource or the URI of a resource.
* The value can either be a single value or an array of values.
*
* Example:
* $graph->add("http://www.example.com", 'dc:title', 'Title of Page');
*
* @param mixed $resource The resource to add data to
* @param mixed $property The property name
* @param mixed $value The value or values for the property
* @param string $lang The language of the literal
*
* @return integer The number of values added
*/
public function addLiteral($resource, $property, $value, $lang = null)
{
$this->checkResourceParam($resource);
$this->checkSinglePropertyParam($property, $inverse);
if (is_array($value)) {
$added = 0;
foreach ($value as $v) {
$added += $this->addLiteral($resource, $property, $v, $lang);
}
return $added;
} elseif (!is_object($value) or !$value instanceof Literal) {
$value = Literal::create($value, $lang);
}
return $this->add($resource, $property, $value);
}
