I've got a table that looks like this (just like the example in the hibernate docs):

OrderLines
-------------
ID
OrderID
LineNumber
LineID

Right now I'm mapping this table by using the reverse engineering function in Hibernate Tools. I'm extending the DelegatingReverseEngineeringStrategy to change some names around, and I want to add some code to this.

Per default my Order class will have a Set of OrderLines. I want to change this to a List of OrderLines, ordered by the LineNumber field. I want to implement this in my ReverseEngineeringStrategy class. Is there any easy way to do this?

No

Unfortunately our database model keeps on changing, and on average I use reverse engineering once a week. This will all be over once we enter production of course, but I still feel bad doing this manually several times again. If there's no way to do this with reverse engineering, I guess I will have to write some kind of script to run after the reverse engineering to do this? It would be cool if reverse engineering could support this in the future ;)

agreed - want to contribute it ?

Hmm. I'll take a look at the code. Won't promise anything though, deadlines and all :(