1. An application framework for defining building automation applications that perform building automation functions in a predetermined environment comprising; a plurality of standard object classes stored in computer readable memory, said standard object classes defining a plurality of standard objects through instantiation such that said standard objects encapsulate attributes and methods pertaining to predetermined physical relationships defined by physical laws associated with said environment; and a connection object class stored in computer readable memory, said connection object class defining at least one connection object for exchanging data between at least two of said standard objects and for defining an application object comprised of said at least two of said standard objects, said application object providing at least one predetermined application-specific building automation function, said application-specific building automation function being defined in said application object without encapsulation within said at least two of said standard objects, whereby said application framework permits change in said application-specific function without requiring change in said at least two of said standard objects.