What is the best practice when trying to update a primary key value and using Hibernate? Here is an example:

Legacy Table: Users
Primary Key: username - varchar(32)
(other columns not necessary for this example)

The username 'fredd' is spelled wrong... I would like to change it to 'fredm'.

In SQL... I can just use an UPDATE statement.

What is the recommended approach to doing this using the Hibernate API? I have found that I can only use delete() and save().


ALSO... What is the recommened practice for Composite-id primary keys?? I have read that this is an "evil" thing but am struggling to find out more information on these subjects.

Thanks!

Never update any primary keys....