8 Using Subject-Oriented Programming to Overcome Common Problems in Object-Oriented Software Development and Evolution

Harold Ossher and Peri Tarr, IBM T.J. Watson Research Center

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Subject-oriented programming (SOP) is a practical approach to object-oriented programming-in-the-large. SOP addresses some well-known limitations of object-oriented development without forcing developers to adopt new languages or abandon the object-oriented paradigm. These limitations include weaknesses in: non-invasive system extension and evolution, large-scale reuse and integration, system decomposition; multi-team and decentralized development.

This tutorial will present the SOP approach and show developers how to use it, both conceptually and using tool support. It will include a set of exercises to be worked through by participants alone and interactively.

Participants will learn how to identify and address, using subject-oriented programming, some difficult and pervasive problems in their own object-oriented software development activities. They will also learn how to leverage subject-oriented programming to facilitate the use of design patterns, frameworks, and reusable components in software systems.

Attendee Background: Familiarity with object-oriented concepts, and at least some experience developing object-oriented applications, is required. Familiarity with subject-oriented programming is not required.

Harold Ossher co-invented subject-oriented programming in 1993. He manages a group that has built C++ support and prototype Smalltalk and Java support for subjects.

Peri Tarr joined IBM T.J. Watson Research Center in 1996. She has a strong background in software engineering and the application of subjects to it.

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Last edited 22 September 1998 13:40:51