Creating new entities and changing an entity in prePersist - doctrine-orm

Question

in a sense I would like to transfer my old question Flushing in postPersist possible or not? to the prePersistevent.
Suppose the following example
class Entity {
/** #PrePersist */
public function doStuffOnPrePersist(LifecycleEventArgs $args)
{
$this->value = 'changed from prePersist callback!';
$other = new OtherEntity();
$args->getEntityManager()->persist($other);
}
}
called like
$entity = new Entity();
$entity->value = "unchanged";
$em->persist($entity);
$em->flush();
I have 2 fundamental questions:
- Will the value written to db be "unchanged" or "Changed from..."?
- Will the OtherEntity be written to DB?
Assuming both questions are answered with yes, let me extend my question:
Both, Entity and OtherEntity have an Autogenerated id field and OtherEntity has a reference (ManyToOne) to Entity:
class Entity {
/*
* #ORM\Column(name="id", type="integer")
* #ORM\Id
* #ORM\GeneratedValue
*/
private $id;
/** #PrePersist */
public function doStuffOnPrePersist(LifecycleEventArgs $args)
{
$this->value = 'changed from prePersist callback!';
$other = new OtherEntity();
$other->father = $this; // <-------------
$args->getEntityManager()->persist($other);
}
}
Will this work, too?