/** @see DATAGRAPH-703 */
@Test
public void createPersonAndFriendsInLongTransaction() {
try (Transaction tx = session.beginTransaction()) {
assertEquals(Transaction.Status.OPEN, tx.status());
Person john = new Person("John");
session.save(john);
Person bob = new Person("Bob");
session.save(bob);
Person bill = new Person("Bill");
session.save(bill);
john = session.load(Person.class, john.getId());
bob = session.load(Person.class, bob.getId());
john.addFriend(bob);
session.save(john);
john = session.load(Person.class, john.getId());
bill = session.load(Person.class, bill.getId());
john.addFriend(bill);
session.save(john);
session.clear();
session.load(Person.class, john.getId());
assertEquals(2, john.getFriends().size());
}
}
@Test
public void shouldAllowVoterToChangeHerMind() {
Candidate a = new Candidate("A");
Candidate b = new Candidate("B");
Voter v = new Voter("V");
v.candidateVotedFor = b;
session.save(a);
session.save(v);
MappingContext context = ((Neo4jSession) session).context();
assertTrue(
context.containsRelationship(
new MappedRelationship(
v.getId(), "CANDIDATE_VOTED_FOR", b.getId(), Voter.class, Candidate.class)));
session.clear();
System.out.println("reloading objects");
a = session.load(Candidate.class, a.getId());
v = session.load(Voter.class, v.getId());
assertEquals(b.getId(), v.candidateVotedFor.getId());
assertTrue(
context.containsRelationship(
new MappedRelationship(
v.getId(), "CANDIDATE_VOTED_FOR", b.getId(), Voter.class, Candidate.class)));
v.candidateVotedFor = a;
session.save(v);
System.out.println("reloading objects");
session.clear();
session.load(Candidate.class, b.getId());
session.load(Voter.class, v.getId());
assertEquals(a.getId(), v.candidateVotedFor.getId());
assertTrue(
context.containsRelationship(
new MappedRelationship(
v.getId(), "CANDIDATE_VOTED_FOR", a.getId(), Voter.class, Candidate.class)));
assertFalse(
context.containsRelationship(
new MappedRelationship(
v.getId(), "CANDIDATE_VOTED_FOR", b.getId(), Voter.class, Candidate.class)));
session.clear();
}
@Test
public void shouldAllowASelfReferenceToBeSavedFromTheReferredSide() {
Candidate candidate = new Candidate("Hilary Clinton");
candidate.candidateVotedFor = candidate;
session.save(candidate.candidateVotedFor);
session.clear();
Long voterId = candidate.candidateVotedFor.getId();
Voter voter = session.load(Voter.class, voterId);
assertNotNull(voter.getId());
assertNotNull(voter.candidateVotedFor.getId());
assertEquals(voter.getId(), voter.candidateVotedFor.getId());
}
@Test
public void shouldAllowACandidateToVoteForHerself() {
Candidate candidate = new Candidate("Hilary Clinton");
candidate.candidateVotedFor = candidate;
session.save(candidate);
assertNotNull(candidate.getId());
assertNotNull(candidate.candidateVotedFor.getId());
assertEquals(candidate.getId(), candidate.candidateVotedFor.getId());
session.clear();
Long voterId = candidate.getId();
Voter voter = session.load(Voter.class, voterId);
assertNotNull(voter.getId());
assertNotNull(voter.candidateVotedFor.getId());
assertEquals(voter.getId(), voter.candidateVotedFor.getId());
}