/**
* Get the id of the to node by checking for it in the actual _from property or checking an internal property.
* This is used because when documents are retrieved from the server, we will not have a model in the _from property.
* This allows us to lazy load any vertices we need later.
* @return null|string
*/
public function getFromId()
{
if (isset($this->_from)) {
return $this->_from->getPod()->getId();
} elseif (isset($this->_data['_from'])) {
return $this->_data['_from'];
} else {
return null;
}
}
/**
* Convience function to turn a AModel or array of coordinates into an acceptable associative array for find*Near() methods.
* @param AModel|array $reference The reference point. This can be a model or an associative array containing latitude and longitude keys.
* @throws FinderException
* @return array
*/
private function generateReferenceData($reference)
{
if ($reference instanceof AModel) {
$coordinates = $reference->getPod()->getCoordinates();
if (!$coordinates) {
throw new FinderException("To use a pod as a reference point, it must have a geo index on its collection and have coordinates assigned.");
}
$coordinates['podId'] = $reference->getPod()->getId();
} elseif (is_array($reference)) {
if (count($reference) == 2 && array_key_exists('latitude', $reference) && array_key_exists('longitude', $reference)) {
$coordinates = $reference;
$coordinates['podId'] = null;
} else {
throw new FinderException('$position array passed to findNear() must contain 2 keys: latitude and longitude.');
}
} else {
throw new FinderException('$position must be either an instance of AModel or an array containing the latitude and longitude.');
}
return $coordinates;
}
/**
* Convinence function that gets the document id (handle) from models, vertex pods and strings.
* @param Document|AModel|string $model
* @throws GraphManagerException
*/
protected function getVertexId($model)
{
if ($model instanceof AModel) {
return $model->getPod()->getId();
} elseif ($model instanceof Document) {
return $model->getId();
} elseif (is_string($model)) {
return $model;
} else {
throw new GraphManagerException('$model can be either a model, a vertex pod or the id of the vertex.');
}
}
