/**
* cast - Return a new instance of a FacebookGraphObject subclass for this
* objects underlying data.
*
* @param string $type The GraphObject subclass to cast to
*
* @return GraphObject
*
* @throws FacebookSDKException
*/
public function cast($type)
{
if ($this instanceof $type) {
return $this;
}
if (is_subclass_of($type, GraphObject::className())) {
return new $type($this->backingData);
} else {
throw new FacebookSDKException('Cannot cast to an object that is not a GraphObject subclass', 620);
}
}
/**
* Returns an array of GraphObject returned by the request. If a type is
* specified, returns the strongly-typed subclass of GraphObject for the data.
*
* @param string $type
*
* @return mixed
*/
public function getGraphObjectList($type = 'Facebook\\GraphObject')
{
$out = array();
$data = $this->responseData->data;
for ($i = 0; $i < count($data); $i++) {
$graph = new GraphObject($data[$i]);
$out[] = $graph->cast($type);
}
return $out;
}
/**
* getPropertyAsArray - Get the list value of a named property for this graph
* object, where each item has been cast to the appropriate subclass type
* if provided.
*
* Calling this for a property that is not an array, the behavior
* is undefined, so don’t do this.
*
* @param string $name The property to retrieve
* @param string $type The subclass of GraphObject, optionally
*
* @return array
*/
public function getPropertyAsArray($name, $type = 'Facebook\\GraphObject')
{
$target = array();
if (isset($this->backingData[$name]['data'])) {
$target = $this->backingData[$name]['data'];
} else {
if (isset($this->backingData[$name]) && !is_scalar($this->backingData[$name])) {
$target = $this->backingData[$name];
}
}
$out = array();
foreach ($target as $key => $value) {
if (is_scalar($value)) {
$out[$key] = $value;
} else {
$graph = new GraphObject($value);
$out[$key] = $graph->cast($type);
}
}
return $out;
}