/**
* Finds objects by a set of criteria.
*
* Optionally sorting and limiting details can be passed. An implementation may throw
* an UnexpectedValueException if certain values of the sorting or limiting details are
* not supported.
*
* @param array $criteria
* @param array|null $orderBy
* @param int|null $limit
* @param int|null $offset
* @return mixed The objects.
*/
public function findBy(array $criteria, array $orderBy = array(), $limit = null, $offset = null)
{
$results = array();
foreach ($this->getOrientClasses() as $mappedClass) {
$query = new Query(array($mappedClass));
foreach ($criteria as $key => $value) {
$query->where("$key = ?", $value);
}
foreach ($orderBy as $key => $order) {
$query->orderBy("$key $order");
}
if ($limit) {
$query->limit($limit);
}
$collection = $this->getManager()->execute($query);
if (!is_array($collection)) {
$message = <<<EOT
Problems executing the query "{$query->getRaw()}".
The server returned $collection, while it should be an Array.
EOT;
throw new Exception($message);
}
$results = array_merge($results, $collection);
}
return $results;
}
