Assume, we have following entity model:
Table "parent"
p_key_1: int (PK)
p_key_2: int (PK)
data_1: int
data_2: sring

Table "child"
c_key_1: int (PK) (FK)
c_key_2: int (PK) (FK)
c_key_3: int (PK)
data_1: int
Please, somebody help me to create hbm.xml files for each of this entity.
As you see, i need one-to-many association with composite primary and foreign keys.
I need also cascade child rows deletion.
I suppose, I have to use set's, but have no idea how to configure it with composite keys.

Thanks.

check the key-many-to-one on the child side

ok, what about sets ? where to define it and how to describe it correctly ?
Can anybody write short example ?