@TransactionAttribute(TransactionAttributeType.REQUIRES_NEW)
private EntityAuthor getAuthorByNameAndSurname(EntityAuthor entityAuthor) {
Query query = em.createNamedQuery(EntityAuthor.FIND_BY_NAME_AND_SURNAME);
query.setParameter("name", entityAuthor.getName());
query.setParameter("surname", entityAuthor.getSurname());
EntityAuthor author = null;
try {
author = (EntityAuthor) query.getSingleResult();
} catch (NoResultException exception) {
}
return author;
}
@Override
public void addBook(EntityBook book, EntityRelease release, EntityAuthor author) {
// Autor se umisti do databaze.
if (author.getId() != null) {
author = em.merge(author);
em.refresh(author);
} else {
em.persist(author);
}
// Propoji se autor s knihou.
book.getAuthorCollection().add(author);
author.getBookCollection().add(book);
em.persist(book);
em.persist(author);
// Vytvori se nove vydani knihy.
release.setBook(book);
book.getReleasesCollection().add(release);
em.persist(book);
em.persist(release);
// Ziska se uzivatel.
Principal principal = sessionContext.getCallerPrincipal();
EntityUser user = beanSessionUser.getUserByEmail(principal.getName());
// Vytvori se novy vytisk knihy.
EntityPrint print = new EntityPrint();
print.setRelease(release);
release.getPrintsCollection().add(print);
print.setOwnershipType(EntityPrint.EnumOwnershipType.PHYSICAL);
print.setReadStatus(EntityPrint.EnumReadStatus.UNREAD);
print.setUser(user);
user.getPrintsCollection().add(print);
em.persist(print);
em.persist(release);
em.persist(user);
em.flush();
}