JPA association without foreign key

Question

Is it possible to set up a ManyToOne association without JPA creating a foreign key in the database?

The tables are owned by another system and are populated asynchr

Answer 1

In Hibernate 4.3.X annotation field with @org.hibernate.annotations.ForeignKey( name = "none") worked for me.

But be carefull: in case of bidirectional relationships, you have to annotate two fields by mentionad annotation!!!