Loading a Value object in List or DropdownList, DDD

Question

I need to clarify something.

Have Person Aggreagate , 2 VOs (Country, StateProvince).

I want to load all country in my presentation layer (i am using mvc)

Answer 1

If in your domain country is actually a VO (you don't want to maintain a thread of identity in the country name was changed etc.) which is the most common scenario, I would add a specialized class in the data access layer to return a list of all countries as VOs. I would also add caching (2nd level cache in NHibernate) to the country entity and list all countries query so that I don't have to hit the DB each time.

Actually, this is where CQRS really shines. CQRS acknowledges that you don't have to go through the domain layer in order to get some data for presentation purposes. In CQRS you just grab some data.