Hi. I am new to Hibernate and I would like to know how I can restrict the values for a column?

One attribute in my class should only contain four types of values.

Thx

EDIT: It would be great if I could map a String from the Object to an Integer in the DB (1 -> HU, 2 -> AU, ...) and vice versa

Restricting the values for a column is done at the database level. Keep in mind Hibernate is an OR-mapping tool, not a database. In DB2 these are called "check constraints", and are added via DDL when the tables are created. For example, the following restricts a YES_NO_INDICATOR column to either a 'Y' or and 'N'

ALTER TABLE MY_TABLE ADD CONSTRAINT CK1
CHECK (YES_NO_INDICATOR IN ('N', 'Y'))

This is how you want to do that. Otherwise, code the check in your business logic.

Thx a lot.

In my case Hibernate is creating my database and I thought it might be possible to add a constraint in the mapping