[appengine-java] Problem with owned one-to-many relationship for child entities

[trustamli]

Hi. I wonder if I can create owned one-to-many relationships for child 
entities (JDO)?

For example I have following PersistenceCapable classes:
Person, Company, PhoneNumber

*Person* owns a *Company* (one-to-one unidirectional).
*Person* owns a *ListPhoneNumber*  (one-to-many unidirectional).
The child *Company *of *Person *also owns a *ListPhoneNumber*
  (one-to-many unidirectional).

When I try to make persistent Person (with or without transactions) I get 
one of these lists empty.
I don't have any exceptions or warnings, just one of the lists is always 
empty (sometimes person's phones, sometimes company phones).

It's working fine with one-to-one, for example a PersistenceCapable Address 
works fine for both Person and Company.

Regards,
Turan

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[appengine-java] OpenID Accounts with same emails and App Engine User class

[trustamli]

Hi,

For some reason my application handles OpenID accounts with same
emails as one user. It means when I try to
access datastore entities with User field of new user it also gets
entities of all other users with the same email.

Is User object same as email? Pythod documentation says: User
instances are unique and comparable. If two instances are equal, then
they represent the same user. (but I use Java).

I think I'm doing something wrong here:

 Query query = pm.newQuery(Subscriber.class, user == userParam);
 query.declareImports(import com.google.appengine.api.users.User);
 query.declareParameters(User userParam);

 @SuppressWarnings(unchecked)
 ListSubscriber results = (ListSubscriber) query.execute(user);
 if (results.size()!=0)
Logger.log(User logged in, results.iterator().next().getId());

?

With this problem using OpenID is very unsafe. Anybody can create an
OpenID account with any email (for example with myOpenID), without
email verification, and then log in to my application and get data
related to all Users with this email.

I believe I'm doing something wrong, so I'll really hope someone will
open my eyes.

Thanks,
Best Regards.

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