[hibernate-dev] PK columns and nullability

[Steve Ebersole]

We have a Pull Request[1] to add a feature to allows Dialects to enforce
that all columns making up a primary key are defined as non-nullable.
Specifically, apparently Teradata will barf if the PK is defined over
columns that are nullable.

The PR focuses on exporting the table/pk.  However, Hibernate overall makes
the assumption that all PK columns are non-nullable.  So I wonder if we
ought to just enforce that in the mapping layer.  Thoughts?

[1] https://github.com/hibernate/hibernate-orm/pull/1059