AutoMapper Conditional Entity Mapping

Question

I have a db entity which stores the Order Addresses like this...

And I have the BLL classes like this...

public class DeliveryAddress
{
    public string Id { get; set; }
    public string PersonyName { get; set; }
    public string CompanyName { get; set; }
    public List<string> AddressLines { get; set; }
    public string Zip { get; set; }
    public string City { get; set; }
    public string CountryCode { get; set; }
}

and another class like this...

public class InvoiceAddress
{
    public string Id { get; set; }
    public string PersonyName { get; set; }
    public string CompanyName { get; set; }
    public List<string> AddressLines { get; set; }
    public string Zip { get; set; }
    public string City { get; set; }
    public string CountryCode { get; set; }
}

and I want to map the EF entity to the above classes on the basis of AddressType column. Can anybody explain me how to do that ?

UPDATE

I want to map to OR.DeliveryAddress if the addressType is "Delivery" and to OR.InvoiceAddress if the addressType is "Invoice"

So far, I have been able to do this, but I don't know how to apply condition on the entity mapping level...

Mapper.CreateMap<OrderAddress, OR.DeliveryAddress>()
       .ForMember(d => d.City, o => o.MapFrom(s => s.city))
       .ForMember(d => d.CompanyName, o => o.UseValue(string.Empty))
       .ForMember(d => d.CountryCode, o => o.MapFrom(s => s.countryCode))
       .ForMember(d => d.Id, o => o.MapFrom(s => s.id))
       .ForMember(d => d.PersonyName, o => o.MapFrom(s => s.name))
       .ForMember(d => d.Zip, o => o.MapFrom(s => s.zip));

UPDATE 2

After discussion with @Yuliam Here is the Fiddle that I could come up with for my problem...

Answer 1

You can create a customer mapper to object. And also you don't have to specify each property using ForMember because if the difference is only upper case / lower case (unless for PersonName ), by default AutoMapper is case insensitive when mapping the property name.

Create a custom mapper to object.

public class AddressConverter : ITypeConverter<OrderAddress, object>
{
    public object Convert(ResolutionContext context)
    {
        var o = context.SourceValue as OrderAddress;
        if (o == null) return null;

        if (o.addressType == "Delivery") return Mapper.Map<OR.DeliveryAddress>(o);
        if (o.addressType == "Invoice") return Mapper.Map<OR.InvoiceAddress>(o);
        return null;
    }
}

Then define the mapper.

Mapper.CreateMap<OrderAddress, OR.DeliveryAddress>()
    .ForMember(d => d.PersonyName, o => o.MapFrom(s => s.name));
Mapper.CreateMap<OrderAddress, OR.InvoiceAddress>()
    .ForMember(d => d.PersonyName, o => o.MapFrom(s => s.name));
Mapper.CreateMap<OrderAddress, object>().ConvertUsing<AddressConverter>();

Usage.

var orderAddressDto = Mapper.Map<object>(orderAddress);

The actual orderAddressDto type will be based on the addressType . If you have an interface or base class for OR.DeliveryAddress and OR.InvoiceAddress that would be more strongly type. Then replace the object type with the interface / base class.

Answer 2

You may want to try taking a look at ResolveUsing

Semi-pseudo code, as I don't know what your entire Domain Model looks like:

Mapper.CreateMap<OrderObject, OrderDto>()
    .ForMember(x => x.Address, opt => opt.ResolveUsing(oo => oo.Type == Invoice ? oo.InvoiceAddress : oo.DeliveryAddress));

I'm assuming here that you have an actual Order entity, which you're trying to make to an 'OrderDto' which only contains one address field.