/**
* Clears the current object, sets all attributes to their default values and removes
* outgoing references as well as back-references (from other objects to this one. Results probably in a database
* change of those foreign objects when you call `save` there).
*/
public function clear()
{
if (null !== $this->aPublisher) {
$this->aPublisher->removeBook($this);
}
if (null !== $this->aAuthor) {
$this->aAuthor->removeBook($this);
}
$this->id = null;
$this->title = null;
$this->isbn = null;
$this->publisher_id = null;
$this->author_id = null;
$this->alreadyInSave = false;
$this->clearAllReferences();
$this->resetModified();
$this->setNew(true);
$this->setDeleted(false);
}
