How to map class to interface in Mapperly

[aseem-shaikh]

[MapperIgnoreTarget(nameof(IPartyAssociation.Party))]
[MapperIgnoreTarget(nameof(IPartyAssociation.PartyFunction))]
private partial IPartyAssociation Map(PartyAssociationFromApi source);

We have to map PartyAssociationFromApi class to IPartyAssociation

[latonz]

Do you have an implementation of IPartyAssociation? Mapperly does not generate implementations of interfaces.

[aseem-shaikh]

public interface IPartyAssociationMapper
{
IPartyAssociation MapPartyAssociation(PartyAssociation source);
}

[aseem-shaikh]

Can you please tell me what changes I need to make to make it runnable with Interface with Mapperly.

[latonz]

Mapperly cannot map to an interface directly. You need to map to an actual implementation of the interface.

[TimothyMakkison]

Would DerivedType apply here?

[MapperIgnoreTarget(nameof(IPartyAssociation.Party))]
[MapperIgnoreTarget(nameof(IPartyAssociation.PartyFunction))]
[MapDerivedType<PartyAssociationFromApi, MyPartyAssociationType>]
[MapDerivedType<PartyAssociationFromApi, MyOtherPartyAssociationType>]
private static IPartyAssociation Map(PartyAssociationFromApi source);

Edit: Don't think it does, maybe runtime target type mapping would work

[latonz]

@TimothyMakkison only if the user can provide which source implementation needs to be mapped to which target implementation. Maybe in the future Mapperly could generate implementations for an interface, but IMO this is not a feature with priority right now.