I\'ve got this code (Java, GAE): // Much earlier: playerKey = KeyFactory.keyToString(somePlayer.key); // Then, later...
Despite the fact that my JDO query contains TWO declareParameters statements, the code below produces an error claiming only one parameter is accepted:
Is it possible to store a collection of embedded classes in Google App Engine (Java)? If so, how would I annotate it?
Instead of instantiating a PersistenceManagerFactory within my app like this: Properties properties = new Properties();
In JPA, you can inject an EntityManager with the @PersistenceContext annotation: @PersistenceContext private EntityManager 开发者_StackOverflow社区entityManager;
I tried to add a property to my User class to get it to automatically load its child records (contacts).
I am using Google App Engine with Java, JDO for persistence. I have my Activity object with timestamp declared as Persistent and of type java.util.Date.
I have an interface @PersistenceCapable public interface MyInterface { public abstract String getName();
I am trying to store an Jdo which has a 开发者_Python百科List in it. When the list is annotated with
I\'ve set up a small project using apache.JDO /w DataNucleus. I can save data w/o any problems, but I got stuck when trying to update or delete them.
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