I'm developing a series of repository classes and a UnitOfWork class (plus its IUnitOfWork interface of course). I'm using Castle Windsor, which injects dependencies via constructors.
My business tier has classes such as "CustomerBusinessLogic", with methods like RetrieveCustomer, SaveCustomer, etc. These in turn use the UOW to perform the database operations.
I'm struggling to find how/where the BLL class should get an instance of the UOW. It doesn't feel right injecting it into the ctr, as a unit of work is exactly that - a unit of work! I think an individual method (LoadCustomer, SaveCustomer) should be responsible for instantiating the UOW for the lifetime of its operation. However doing this means resorting to a service locator, which is an anti-pattern.