/**
* persist - Persists a thread to the database.
*
* @param TopicInterface $thread
* @return TopicInterface
*/
public function persist(TopicInterface $thread)
{
if ($thread->getId() > 0) {
$this->update($thread, null, null, new TopicHydrator());
} else {
$this->insert($thread, null, new TopicHydrator());
}
return $thread;
}
