Not sure why you need a Nullable<> here, as even though your class may be represented as a component it's still a reference type and thus implicitly nullable anyway.
On Thu, Jan 14, 2010 at 6:18 PM, playtime <playtime...@googlemail.com>wrote:
> Well, it works transparently with all the built-in value types such as
> int, decimal, DateTime etc.
>
> I also have no issues mapping my value type, CurrencyAmount, when it
> is mandatory.
>
> I cannot find the correct way to map, CurrencyAmount when it's
> Nullable<CurrencyAmount>. E.g.:
>
> public struct CurrencyAmount : IComparable<CurrencyAmount>,
> IEquatable<CurrencyAmount>
> {
> public CurrencyAmount(decimal amount, Currency currency)
> { //etc... }
> private decimal _Amount;
> public decimal Amount { get { return
> _Amount; } }
> private Currency _Currency;
> public Currency Currency { get { return
> _Currency; } }
> //etc...
> }
>
> public class MyEntity
> {
> private CurrencyAmount _Value;
> public CurrencyAmount Value { get { return _Value; } }
> private CurrencyAmount? _NullableValue;
> public CurrencyAmount? NullableValue { get { return
> _NullableValue; } }
> }
>
> public class MyEntityMap : ClassMap<MyEntity>
> {
> public MyEntityMap ()
> {
> Component(m => m.Value, CurrencyAmountComponent.Map
> ("Value")); //Works fine
>
> //Complains about not finding backing field "_Amount"
> Component(m => m.NullableValue, CurrencyAmountComponent.Map
> ("NullableValue"));
> }
> }
>
> public class CurrencyAmountComponent
> {
> public static Action<ComponentPart<CurrencyAmount>> Map(string
> columnPrefix, bool nullable)
> {
> return c =>
> {
> c.Map(x => x.Amount, columnPrefix + "Amount");
> c.References(x => x.Currency, columnPrefix +
> "Currency");
> };
> }
> }
>
> So. rather stumped at the moment.
>
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