@Test
public void shouldBeMergeWithoutTransient() {
// given
final PersonBasic person = new PersonBasic("Mona-Lisa", "DaVinci");
person.setState("OK");
// when
entityManager.getTransaction().begin();
final PersonBasic storedPerson = entityManager.merge(person);
entityManager.getTransaction().commit();
// then
assertThat(person.getFirstname(), is("Mona-Lisa"));
assertThat(person.getLastname(), is("DaVinci"));
assertThat(person.getBirthday(), is(nullValue()));
assertThat(person.getSalary(), is(nullValue()));
assertThat(person.getGender(), is(nullValue()));
// Transient bleibt unangetastet
assertThat(person.getState(), is("OK"));
assertThat(storedPerson.getFirstname(), is("Mona-Lisa"));
assertThat(storedPerson.getLastname(), is("DaVinci"));
assertThat(storedPerson.getBirthday(), is(nullValue()));
assertThat(storedPerson.getSalary(), is(nullValue()));
assertThat(storedPerson.getGender(), is(nullValue()));
// Transient wird initialisiert auf null, da merge ein
// kopie des Person-Objekt erstellt (via Serialisierung)
assertThat(storedPerson.getState(), is(nullValue()));
}
@Test
public void shouldBePersistWithoutTransient() {
// given
final PersonBasic person = new PersonBasic("Mona-Lisa", "DaVinci");
person.setState("OK");
// when
entityManager.getTransaction().begin();
entityManager.persist(person);
entityManager.getTransaction().commit();
// then
assertThat(person.getFirstname(), is("Mona-Lisa"));
assertThat(person.getLastname(), is("DaVinci"));
assertThat(person.getBirthday(), is(nullValue()));
assertThat(person.getSalary(), is(nullValue()));
assertThat(person.getGender(), is(nullValue()));
// ==== Transient bleibt unangetastet
assertThat(person.getState(), is("OK"));
final PersonBasic storedPerson = entityManager.find(PersonBasic.class, person.getId());
assertThat(storedPerson.getFirstname(), is("Mona-Lisa"));
assertThat(storedPerson.getLastname(), is("DaVinci"));
assertThat(storedPerson.getBirthday(), is(nullValue()));
assertThat(storedPerson.getSalary(), is(nullValue()));
assertThat(storedPerson.getGender(), is(nullValue()));
// ==== Aus dem Enity Manager (fist level cache)
assertThat(storedPerson.getState(), is("OK"));
final TypedQuery<PersonBasic> query =
entityManager.createQuery(
"select p from PersonBasic p where p.id = :id", PersonBasic.class);
query.setParameter("id", person.getId());
final PersonBasic findPerson = query.getSingleResult();
assertThat(findPerson.getFirstname(), is("Mona-Lisa"));
assertThat(findPerson.getLastname(), is("DaVinci"));
assertThat(findPerson.getBirthday(), is(nullValue()));
assertThat(findPerson.getSalary(), is(nullValue()));
assertThat(findPerson.getGender(), is(nullValue()));
// ==== Aus dem Enity Manager (fist level cache)
assertThat(findPerson.getState(), is("OK"));
}
@Test
public void shouldBePersistNameAndFirstname() {
// given
final PersonBasic person = new PersonBasic("Mona-Lisa", "DaVinci");
// when
entityManager.getTransaction().begin();
entityManager.persist(person);
entityManager.getTransaction().commit();
// then
final PersonBasic storedPerson = entityManager.find(PersonBasic.class, person.getId());
assertThat(storedPerson.getFirstname(), is("Mona-Lisa"));
assertThat(storedPerson.getLastname(), is("DaVinci"));
assertThat(storedPerson.getBirthday(), is(nullValue()));
assertThat(storedPerson.getSalary(), is(nullValue()));
assertThat(storedPerson.getState(), is(nullValue()));
assertThat(storedPerson.getGender(), is(nullValue()));
}