JPA，瞬态注释不会覆盖OneToOne？

I have a superclass Product and a subclass Reduction. Now I want the subclass to override a property of the superclass so it isn't persisted in the database. I excpeted it to work like this but apparently hibernate still tries to store the ProductType property of the Reduction in the database. Is there another way to fix this ?I have a superclass Product and a subclass Redu