@Override
public void deleteAuthor(int id) {
// entityManager.getTransaction().begin();
Author author = new Author();
author.setId(id);
dao.delete(author);
// entityManager.getTransaction().commit();
}
@Override
public String getAuthorFirstName(int id) {
Author author = dao.findById(id);
if (author != null) {
return author.getFirstName();
}
return null;
}
@Override
public void createAuthor(int id, String firstName, String lastName) {
// entityManager.getTransaction().begin();
Author author = new Author();
author.setId(id);
author.setFirstName(firstName);
author.setLastName(lastName);
dao.persist(author);
// entityManager.getTransaction().commit();
}