public static TypedQuery<Note> findNotesByAuthorEquals(Worker author) {
if (author == null) throw new IllegalArgumentException("The author argument is required");
EntityManager em = Note.entityManager();
TypedQuery<Note> q =
em.createQuery(
"SELECT o FROM Note AS o WHERE o.author = :author ORDER by o.id DESC", Note.class);
q.setParameter("author", author);
return q;
}
@Transactional
public void remove() {
if (this.entityManager == null) this.entityManager = entityManager();
if (this.entityManager.contains(this)) {
this.entityManager.remove(this);
} else {
Note attached = Note.findNote(this.id);
this.entityManager.remove(attached);
}
}