This issue will fix HHH-7545 for the new metamodel. A related issue, HHH-2448, is already fixed in the new metamodel. In addition, the fix will also take care of possible (but extremely rare) ambiguities in generated column aliases for IDs, collection indexes, ID columns for idbags, and derived values.

Currently, a null value is allowed for the TableSpecification passed to for org.hibernate.metamodel.spi.Value.getAlias(Dialect, TableSpecification).

The fix will throw IllegalArgumentException if the TableSpecification is null.