Layered, Server-Based Support for
		   Object-Oriented Application Development
 
	Guruduth Banavar          Douglas Orr          Gary Lindstrom

		     {banavar,dbo,lindstrom}@cs.utah.edu


			 Technical Report UUCS-95-007
			Department of Computer Science
			      University of Utah
			 Salt Lake City, UT 84112 USA

				  April 1995


				   Abstract

	This paper advocates the idea that the physical modularity (file
structure) of application components supported by conventional OS environments
can be elevated to the level of logical modularity, which in turn can directly
support application development in an object-oriented manner.  We demonstrate
this idea through a system-wide server that manages the manipulation of such
components effectively.  The server is designed to be a fundamental operating
system service responsible for binding and mapping component instances into
client address spaces.
 
	We show how this model solves some longstanding problems with the
management of application components in existing application development
environments.  We demonstrate that this model's effectiveness derives from its
support for the cornerstones of OO programming: classes and their instances,
encapsulation, and several forms of inheritance.


Keywords: Object-orientation, Application software development,
Linker, Modularity.


To be presented at International Workshop on Object Orientation in Operating
Systems (IWOOOS'95), Lund, Sweden.