Question

I have two entities having one to many relation and these are User and Address. One user can have many addresses. I am using one session and transaction per HTTP request pattern and Level 1 cache is turned on. For some reason I am seeing that my lazy loaded collections are not taking care of changes made to the data. For example If I create one user object. Then I create two address objects and save them like

User u1 = CreateNewUser("[e-mail]", "[e-mail]");
u1.Save();

Address a1 = CreateNewAddress(u1, "[e-mail]", "Old1", "User1");
a1.Save();
Address a2 = CreateNewAddress(u1, "[e-mail]", "Old1", "User1");
a2.Save();
Session.Flush();
Assert.AreEqual(2, u1.Addresses.Count); // THIS IS FAILING BECAUSE COUNT IS 0

Now when doing assert I am expecting user object to lazy load two address and count should be 2 but it returns 0. If I simply throw away complete cache by doing Session.Clear() call that doesn’t work either. But if I throw away complete cache by doing Session.Clear() and then load my user object again this way it works as expected. I am not sure am I missing something or there is still something missing in NHibernate cache set-up configurations. Any help will be appreciated.

Thanks

Answer 1

You will have to add the addresses to the user class too… Typically you see people creating a method u1.AddAddress(a1); which will set the reference to the user on the address object and add it to the address list in the user.