/**
* Handles query invocation
* @return mixed
*/
public function __invoke()
{
$result = call_user_func_array([$this, 'invoke'], func_get_args());
$e = new observr\Event($this, ['result' => &$result]);
if (!isset($this->stream)) {
throw new xral\Exception('No resource specified');
}
if ($this->stream->isWrite()) {
$this->attach(self::COMPLETE, function () use($result, $e) {
if ($this->hasObservers(self::SAVE)) {
$this->setState(self::SAVE, new observr\Event($this, ['result' => $e['result']]));
$this->clearState(self::SAVE);
}
});
}
$this->setState(self::COMPLETE, $e);
if (!$e->canceled) {
$result = $e['result'];
}
if ($this->stream->isOpen()) {
$this->stream->close();
}
return $result;
}
