Hi,
I have 3 tables in mysql
**User**
---------------------
`id` (auto increment)(PK)
`user_name`
`password`
`first_name`
`last_name`
`created_at`
`modified_at`
`email`

User_Role
-----------------------
`user_id` (PK)
`role_id` (PK)

Role
----------------------
`id`(PK)
`name`


The Mapping file User.hbm.xml...