One-to-One bidirectional relationship

[wlandgraf (Wagner Landgraf)]

A one-to-one relationship, in Aurelius, is simply a regular many-valued association that happens to have only one item in the list. So you would create it the same way as you create a many-to-one relationship.

More info here:

How to map one-to-one association

You should always map a one-to-many, and then you can add wrappers to make your object behave as 1-1 at OOP-level: TPerson = class private [ManyValuedAssociation([TAssociationProp.Lazy], CascadeTypeAll)] FAddresses: Proxy<TList<TAddress>>; public property Address: TAddress read GetAddress write SetAddress; end; function TPerson.GetAddress: TAddress; begin if FAddresses.Value.Count > 0 then Result := FAddresses.Value[0] else Result := nil; end; procedure TPerson.SetAddre…