Hibernate version:2.1

Mapping documents:unknown

Name and version of the database you are using:MySQL 4.1

I'm having trouble figuring out how to map a foreign-key one-to-one typesafe relationship. The details are as follows:

table message
-----------------
message_id (primary key, auto_inc)
message
message_type

table message_types
------------------------
message_type_id (primary key, auto_inc)
message_type_name

where
message.message is a String containing a message
message.message_type is an int - the foreign key of message_types
message_types.type_name is a String

I would like message_types to be a typesafe enum. My problem is figuring out how to map the message.message_type int without exposing the int to the outside world.
That is, I can't make the getter
public int getMessageType()
because it needs to be
public MessageType getMessageType()

I would rather not make MessageType a hibernate-persisted object, because that forces a public constructor and a public getId() method. In fact, if there were a way to simply look up the id from the table using the string from MessageType, I'd love to see it!

-James