We're building a 3-tier solution using NHibernate. We're implementing the command pattern to avoid doing DTOs; however we don't want to have NHibernate assemblies present on the client at all -- to achieve that we are replacing the NHibernate types with our own. This gets to be a bit tedious and error prone in various scenarios. Anyone else has an ellegant solution to this?

Thanx,

maros

The objects which NH maps to don't need to reference NH at all. They can be transferred (DTO, right?) between layers without any special baggage. All the layers need references to the DTOs and that's it. Only the bottom layer really needs the NH assembly reference.

The command pattern is fine, but I don't see how it is related to the DTOs or the NH types. Perhaps a code sample of what you're hoping to do would help.