public void create(User user) throws RollbackFailureException, Exception {
if (user.getTokenCollection() == null) {
user.setTokenCollection(new ArrayList<Token>());
}
EntityManager em = null;
try {
utx.begin();
em = getEntityManager();
Collection<Token> attachedTokenCollection = new ArrayList<Token>();
for (Token tokenCollectionTokenToAttach : user.getTokenCollection()) {
tokenCollectionTokenToAttach =
em.getReference(
tokenCollectionTokenToAttach.getClass(), tokenCollectionTokenToAttach.getVal());
attachedTokenCollection.add(tokenCollectionTokenToAttach);
}
user.setTokenCollection(attachedTokenCollection);
em.persist(user);
for (Token tokenCollectionToken : user.getTokenCollection()) {
User oldUidOfTokenCollectionToken = tokenCollectionToken.getUid();
tokenCollectionToken.setUid(user);
tokenCollectionToken = em.merge(tokenCollectionToken);
if (oldUidOfTokenCollectionToken != null) {
oldUidOfTokenCollectionToken.getTokenCollection().remove(tokenCollectionToken);
oldUidOfTokenCollectionToken = em.merge(oldUidOfTokenCollectionToken);
}
}
utx.commit();
} catch (Exception ex) {
try {
utx.rollback();
} catch (Exception re) {
throw new RollbackFailureException(
"An error occurred attempting to roll back the transaction.", re);
}
throw ex;
} finally {
if (em != null) {
em.close();
}
}
}
public void edit(User user)
throws IllegalOrphanException, NonexistentEntityException, RollbackFailureException,
Exception {
EntityManager em = null;
try {
utx.begin();
em = getEntityManager();
User persistentUser = em.find(User.class, user.getId());
Collection<Token> tokenCollectionOld = persistentUser.getTokenCollection();
Collection<Token> tokenCollectionNew = user.getTokenCollection();
List<String> illegalOrphanMessages = null;
for (Token tokenCollectionOldToken : tokenCollectionOld) {
if (!tokenCollectionNew.contains(tokenCollectionOldToken)) {
if (illegalOrphanMessages == null) {
illegalOrphanMessages = new ArrayList<String>();
}
illegalOrphanMessages.add(
"You must retain Token "
+ tokenCollectionOldToken
+ " since its uid field is not nullable.");
}
}
if (illegalOrphanMessages != null) {
throw new IllegalOrphanException(illegalOrphanMessages);
}
Collection<Token> attachedTokenCollectionNew = new ArrayList<Token>();
for (Token tokenCollectionNewTokenToAttach : tokenCollectionNew) {
tokenCollectionNewTokenToAttach =
em.getReference(
tokenCollectionNewTokenToAttach.getClass(),
tokenCollectionNewTokenToAttach.getVal());
attachedTokenCollectionNew.add(tokenCollectionNewTokenToAttach);
}
tokenCollectionNew = attachedTokenCollectionNew;
user.setTokenCollection(tokenCollectionNew);
user = em.merge(user);
for (Token tokenCollectionNewToken : tokenCollectionNew) {
if (!tokenCollectionOld.contains(tokenCollectionNewToken)) {
User oldUidOfTokenCollectionNewToken = tokenCollectionNewToken.getUid();
tokenCollectionNewToken.setUid(user);
tokenCollectionNewToken = em.merge(tokenCollectionNewToken);
if (oldUidOfTokenCollectionNewToken != null
&& !oldUidOfTokenCollectionNewToken.equals(user)) {
oldUidOfTokenCollectionNewToken.getTokenCollection().remove(tokenCollectionNewToken);
oldUidOfTokenCollectionNewToken = em.merge(oldUidOfTokenCollectionNewToken);
}
}
}
utx.commit();
} catch (Exception ex) {
try {
utx.rollback();
} catch (Exception re) {
throw new RollbackFailureException(
"An error occurred attempting to roll back the transaction.", re);
}
String msg = ex.getLocalizedMessage();
if (msg == null || msg.length() == 0) {
Integer id = user.getId();
if (findUser(id) == null) {
throw new NonexistentEntityException("The user with id " + id + " no longer exists.");
}
}
throw ex;
} finally {
if (em != null) {
em.close();
}
}
}