i think it's safe to assume that you have the "mappedBy" attribute set for the
User side of the relationship, right?
the mappedBy attribute basically says which side of the relationship is
responsible for maintaining the DB foreign key link. so, you could try this in
your existing code:
| User[] users = portal.getUsers();
| for(User user : users)
| {
| user.setPortal(null); //or user.removePortal(), whatever your method is
| }
|
| em.remove(portal);
|
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