Hi Guys,
I'm new in Google App Engine and I testing my first entities, I have
the follow problem:
After recover the follow object from the database, one of the fields:
country (that is a Key) is null !!! This is my entity:
@PersistenceCapable(identityType = IdentityType.APPLICATION)
public class User{
@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
private Long id;
@Persistent
private String emailAddress;
@Persistent
private String firstName;
@Persistent
private String lastName;
@Persistent
private Key country;
I check the table in the database just before recovering the object
(after create it) and the column country has the proper Key, I have no
idea why is not recovering it.
This is my method to recover it:
User userLoaded = null;
// Creating a PersistentManager to interact with the DataBase
PersistenceManager pm = PMF.get().getPersistenceManager();
// Query to check if the current user exists
Query query = pm.newQuery(User.class);
// Set the filter
query.setFilter("emailAddress == emailAddressParam");
// Declare the parameter
query.declareParameters("String emailAddressParam");
// Run the query and check the result
try {
List<User> results = (List<User>)
query.execute(emailAddressParam);
if (!results.isEmpty()) {
userLoaded = results.get(0);
------------------->>>>> HERE THE FIELD
userLoaded.getCountry() = NULL
} else {
throw new UnknownUserException();
}
} finally {
pm.close();
}
}
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