public function createComment(Comment $c)
{
if ($c === null) {
throw new Exceptions\NullPointerException("Argument comment was null");
}
try {
$c->setUpdated(new DateTime());
$c->setCreated(new DateTime());
$c->setAuthor($c->getEditor());
$this->commentDao->save($c);
$this->invalidateEntityCache($c);
$this->onCreate($c);
} catch (\Exception $ex) {
throw new Exceptions\DataErrorException($ex->getMessage(), $ex->getCode(), $ex->getPrevious());
}
}