The update still don't works. I give up.
I use the "@Persistent(dependent = "true")" and add the delete instruction
when I update the user location, in a transaction.
Now it works, but I think it's not very clean/efficient.
Have a nice day.
public void updateUserLocation(String username, Location newLocation) {
PersistenceManager pm = PMF.getPersistenceManager();
Transaction tx = pm.currentTransaction();
try {
// Get the user and update the location
tx.begin();
POJOUser user = pm.getObjectById(POJOUser.class, username);
pm.deletePersistent(user.getLastLocation());
user.setLastLocation(new POJOLocation(newLocation));
tx.commit();
} catch (JDOObjectNotFoundException ex) {
} finally {
if (tx.isActive()) {
tx.rollback();
}
pm.close();
}
}
@PersistenceCapable
public class POJOUser {
/** Primary key */
@PrimaryKey
@Persistent
private String key = null;
/** Username */
@Persistent
private String username = null;
/** Password */
@Persistent
private String password = null;
/** The last location of the user */
@Persistent(dependent = "true")
private POJOLocation lastLocation = null;
...
}
@PersistenceCapable
public class POJOLocation implements Location {
/** Primary key */
@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
private Key key = null;
/** X */
@Persistent
private Double x = null;
/** Y */
@Persistent
private Double y = null;
....
}
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