optionalReferencedOn

Registers an optional reference as a field of the child entity class, which returns a parent object of this EntityClass.

The reference should have been defined by the creation of a column using either optReference() or reference().nullable() on the child table.

R2DBC counterpart of JDBC's optionalReferencedOn.

Composite-FK form of optionalReferencedOn. R2DBC counterpart of JDBC's optionalReferencedOn(IdTable<*>).