Hi everyone, this is my first post and it's for a question :( . I'm a hibernate newbie and I've been following the "Begining Hibernate - From Novice to Professional" book. I've been searching through the forums and google, but I'm unable to see a clear way of mapping the relationship between the users table and the messages table.

I've created both POJOS for the users and messages table.

My Hibernate version is 3.2

Link to Database E-R image

Hi Cybrid,

From Er digram i could see that message have one from(user) and one TO (user)

For that use in message HBM many to one for from and to.

Hi Dharmendra, thank you very much for your fast response; but another question arises to me; is it possible to use Collections for a many-to-one relationship?, I mean, the book I mentioned states that collections should only be used in many-to-many relationships.

Thanks in advance.

Hi Cybrid,

have a reference



http://www.hibernate.org/hib_docs/v3/re ... tions.html

http://www.java2s.com/Code/Java/Hiberna ... deSave.htm

http://vetula.com/blog/archives/2004/08 ... hibernate/

God, I'm getting a headache; since users table is the "one" side of the relationship, shouldn't a one-to-many relationship in the Users hbm be putted?, instead of a many-to-one in the messages ("many" side) in the messages hbm?.

In my object's model, the user pojo contains a set of sent messages and another for received messages, or am I getting the wrong aproach?.

Thanks again for your time :D .