Oops I somehow managed to hit the submit without the full question... Apologies...Let me start again
I have 2 entities UserDepartment and User, which are defined as follows @Entity public class UserDepartment extends DomainObject<Long, UserDepartment> { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Long departmentId; @OneToMany(mappedBy = "userDepartment", cascade = CascadeType.ALL, fetch=FetchType.EAGER) private Set<User> users = new HashSet<User>(); and @Entity public class User extends DomainObject<Long, User> { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) @Extension(vendorName = "datanucleus", key = "gae.encoded-pk", value = "true") private String encodedKey; @Extension(vendorName = "datanucleus", key = "gae.pk-id", value = "true") private Long userId; private String username; @ManyToOne(fetch = FetchType.EAGER) private UserDepartment userDepartment; As you would notice that UserDepartment is the parent of the User. Now once I persist the entity group, i want to modify the user so that it belongs to a different department now. What is the best way to do that? If i remove the UserDepartment from the User and then assign a new UserDepartment to it then I get into the issue of trying to access multiple entity groups in the same transaction. Regards | Vikas www.inphina.com On Aug 3, 6:05 pm, Vikas Hazrati <vhazr...@gmail.com> wrote: > I have 2 entities UserDepartment and User, which are defined as > follows > > @Entity > public class UserDepartment extends DomainObject<Long, UserDepartment> > { > > @Id > @GeneratedValue(strategy = GenerationType.IDENTITY) > private Long departmentId; > > and > > @Entity > public class User extends DomainObject<Long, User> { > > @Id > @GeneratedValue(strategy = GenerationType.IDENTITY) > @Extension(vendorName = "datanucleus", key = "gae.encoded-pk", value > = "true") > private String encodedKey; > > @Extension(vendorName = "datanucleus", key = "gae.pk-id", value = > "true") > private Long userId; > > private String username; > @ManyToOne(fetch = FetchType.EAGER) > private UserDepartment userDepartment; -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.