Hi everyone.

Cass A has a one-to-many relationship with Class B. Class B also has a one-to-many relationship of Class C. That is, A can have many B while each B can also have many C.

I think I did the right things on Mapping. The problem is I don't know how to save them into the database.

SessionFactory sf = new Configuration().configure().buildSessionFactory();
Session s = sf.openSession();
Transaction t = s.beginTansaction();
A a = new A();
a.setB(new ArrayList());
s.save(a);

B b = new B();
b.setName("b");
b.setC(new ArrayList());

C c = new C();
c.setName("c");

What should I do next? I have no idea how to put b and c into database.

Thanks in advance.

Have you looked at the docs? Al this is covered pretty well there.

The typical case is to map A to B and B to C with cascading on saves and updates. Then simply build up your object graph and call save on the top-level; with the cascading, Hibernate takes care of the rest.

Thanks for your time. I found out that I did everything correct except I set lazy="true"
That's why I cannot make it works.
Thank You!