Here are the mappings:
<?xml version="1.0" encoding="utf-8" ?> <hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" assembly="cs_nhibernate_test1" namespace="cs_nhibernate_test1"> <class name="User" table="users"> <id name="Id" type="int"> <column name="Id" not-null="true" /> <generator class="native"/> </id> <property name="Name" column="Name" /> <property name="Age" column="Age" /> <bag name="Posts" inverse="true" cascade="all"> <key column="UserId" /> <one-to-many class="Post" /> </bag> </class> <class name="Post" table="posts"> <id name="Id" type="int"> <column name="Id" not-null="true" /> <generator class="native"/> </id> <property name="Text" column="Text" /> <many-to-one name="User" column="UserId" /> </class> </hibernate-mapping> Here's the code:
public class User { public virtual int Id { get; set; } public virtual string Name { get; set; } public virtual int Age { get; set; } public virtual IList<Post> Posts { get; set; } public override string ToString() { return string.Format("User{{id={0}, name='{1}', age={2}}}", Id, Name, Age); } } public class Post { public virtual int Id { get; set; } public virtual string Text { get; set; } public virtual User User { get; set; } public override string ToString() { return string.Format("Post{{id={0}, text='{1}', user={2}}}", Id, Text, User); } } static void Main(string[] args) { ... ISessionFactory sessionFactory = cfg.BuildSessionFactory(); using (ISession session = sessionFactory.OpenSession()) { using (ITransaction transaction = session.BeginTransaction()) { for (int i = 0; i < 3; ++i) { var user = new User { Name = string.Format("John Smith #{0}", i + 1), Age = 25 + i, Posts = new List<Post>() }; for (int j = 0; j < 3; ++j ) { var post = new Post { Text = string.Format("qwerty {0} {1}", i, j) }; user.Posts.Add(post); } session.SaveOrUpdate(user); } transaction.Commit(); } foreach (User u in session.CreateCriteria(typeof (User)).List<User>()) { Console.WriteLine(u); foreach (Post post in u.Posts) { // post.User is always null! Console.WriteLine(" {0}", post); } } foreach (Post p in session.CreateCriteria(typeof(Post)).List<Post>()) { // p.User is always null! Console.WriteLine(p); } } } Post.User is always null. Already spent 3 hours. Where am I wrong?
