@GET
@Path("/{userId}")
public UserVO findByUserId(@PathParam("userId") Integer userId) {
UserVO u = new UserVO();
User user = null;
EntityManager em = EntityManagerLoaderListener.createEntityManager();
try {
TypedQuery<User> query = em.createQuery("FROM User WHERE userId=:userId", User.class);
query.setParameter("userId", userId);
user = query.getSingleResult();
BeanUtils.populate(u, BeanUtils.describe(user));
if (user.getAccount() != null) {
u.setAccountId(user.getAccount().getAccountId());
} else {
System.out.println("ERROR a user MUST be bound to an existing account");
}
} catch (NoResultException nre) {
System.out.println("No result found for userId=" + userId);
} catch (Exception e) {
e.printStackTrace();
} finally {
em.close();
}
return u;
}
/**
* Execute search request on User entity and return the ValueObject list
*
* @param queryString jpql query
* @param parameters jpql parameters
* @return list of UserVO
*/
private List<UserVO> executeUserRequestList(
String queryString, HashMap<String, Object> parameters) {
List<User> users = null;
List<UserVO> vos = new ArrayList<UserVO>();
EntityManager em = EntityManagerLoaderListener.createEntityManager();
try {
TypedQuery<User> query = em.createQuery(queryString, User.class);
if (parameters != null) {
Iterator<String> it = parameters.keySet().iterator();
while (it.hasNext()) {
String pName = it.next();
query.setParameter(pName, parameters.get(pName));
}
}
query.setMaxResults(Constants.MAX_RESULT);
users = query.getResultList();
/* Populate the value object */
for (User user : users) {
UserVO u = new UserVO();
BeanUtils.populate(u, BeanUtils.describe(user));
u.setAccountId(user.getAccount().getAccountId());
vos.add(u);
}
} catch (NoResultException nre) {
System.out.println("No result found while search users " + nre.getMessage());
} catch (Exception e) {
e.printStackTrace();
} finally {
em.close();
}
return vos;
}
@POST
@Consumes(MediaType.APPLICATION_JSON)
public Response registerUser(UserVO user) {
System.out.println("Register " + user);
EntityManager em = EntityManagerLoaderListener.createEntityManager();
try {
User u = new User();
Account account = null;
BeanUtils.populate(u, BeanUtils.describe(user));
u.setUserId(null); // forced
em.getTransaction().begin();
if (user.getAccountId() == null) {
System.out.println("Create a new account.");
user.setNewUser(true);
account = new Account();
em.persist(account);
} else {
TypedQuery<Account> tQ =
em.createQuery("FROM Account where accountId=:accountId", Account.class);
tQ.setParameter("accountId", user.getAccountId());
account = tQ.getSingleResult();
}
u.setAccount(account);
em.persist(u);
em.getTransaction().commit();
user.setAccountId(u.getAccount().getAccountId());
user.setUserId(u.getUserId());
} catch (NoResultException nre) {
System.out.println("ERROR no account found with accountId: " + user.getAccountId());
} catch (Exception e) {
e.printStackTrace();
} finally {
em.close();
}
return Response.created(URI.create("/services/users/" + user.getUserId())).entity(user).build();
}