The DaoManager instance that is built from a dao.config file is aware of all of the contexts contained within the configuration file. The context basically bundles DAO implementations together with a session handler. The DaoManager knows which DAOs and session handler belong to which context. When you request a DAO instance from the DaoManager, the proper session handler will be provided with it. Therefore, there is no need to access the context or session handler directly. Your DAO knows how it works.