/**
* Actually returns a Traversable object with the DriverCursor within.
* If it does not exists yet, create it using the $collection, $command and
* $params given.
*
* @return Traversable
*/
protected function getCursor() : Traversable
{
if (!$this->cursor) {
$params = $this->getConverter()->toMongoTypes($this->params);
$driverCursor = $this->collection->{$this->command}(...$params);
$this->cursor = new IteratorIterator($driverCursor);
$this->cursor->rewind();
}
return $this->cursor;
}
/**
* Rewind the Iterator to the first element
* @link http://php.net/manual/en/iterator.rewind.php
* @return void Any returned value is ignored.
* @since 5.0.0
*/
public function rewind()
{
$this->cursor->rewind();
}
