ur DB connection is closed by the time you try to select Address list(i am
assuming writing phone is just a typo) first time.
Either select/iterate the list before closing the pm in method
userDao.getUser(TEST_USER_ID);
or use (defaultFetchGroup = "true") for List<Address> addresses declartion
like this
@Persistent (defaultFetchGroup = "true")
private List<Address> addresses
On Tue, Jun 15, 2010 at 7:15 PM, Tony <porkrice...@gmail.com> wrote:
> I've followed the GAE docs on setting up one-to-many relationship but
> I'm still having trouble in retrieving the collection data back. I
> have no problem getting the other non-collection properties back. Here
> are my classes:
>
> @PersistenceCapable
> public class User{
>
> @PrimaryKey
> @Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
> private Key key;
>
> @Persistent
> private String uniqueId;
>
> @Persistent
> private String email;
>
> @Persistent
> private List<Address> addresses = new ArrayList<Address>() ;
> ...
> }
>
> @PersistenceCapable
> public class Phone{
>
> @PrimaryKey
> @Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
> private Key key;
>
> @Persistent
> private String number;
> ...
> }
>
> public class UserDaoImpl implements UserDao {
>
>
> public void insertUser(User user) {
> if(user.getKey() == null) {
> com.google.appengine.api.datastore.Key key =
> KeyFactory.createKey(User.class.getSimpleName(), user.getEmail());
> user.setKey(key);
> }
> PersistenceManager pm =
> PersistenceManagerWrapper.getPersistenceManager();
> notNull(user);
> try {
> pm.makePersistent(user);
> } finally {
> pm.close();
> }
> }
>
> @SuppressWarnings("unchecked")
> public User getUser(String uniqueId) {
> PersistenceManager pm =
> PersistenceManagerWrapper.getPersistenceManager();
> Query query = pm.newQuery(User.class);
> query.setFilter("uniqueId == uniqueIdParam");
> query.declareParameters("String uniqueIdParam");
> User user = null;
> try {
> List<User> users = (List<User>)(query.execute(uniqueId));
> //TODO abstract this
> if(users.size() > 0)
> user = users.get(0);
> } finally {
> pm.close();
> }
> return user;
> }
> }
>
> public class UserDaoImplTest {
> @Test
> public void getUserTest() {
> User user = createTestUser();
> assertNotNull("The user object should not be null", user);
> userDao.insertUser(user);
>
> User returnedUser = userDao.getUser(TEST_USER_ID);
> assertNotNull("The returnedUser object should not be null",
> returnedUser);
> Assert.assertPropertyEqualsExcludeProperties("User Object",
> user, returnedUser, "");
>
> }
> }
>
> When I run the test, all the properties for User is populated but the
> list of Phone if I get is empty.
>
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