The application of object-oriented design techniques to the evolution of the architecture of a large legacy software system

Authors:
Jeff Mason;Emil S. Ochotta
Affiliations:
Xilinx Inc. San Jose, CA;Xilinx Inc. San Jose, CA
Venue:
COOTS'99 Proceedings of the 5th conference on USENIX Conference on Object-Oriented Technologies & Systems - Volume 5
Year:
1999

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Abstract

Object Oriented Analysis and Design (OOAD) is increasingly popular as a set of techniques that can be used to initially analyze and design software. Unfortunately, OOAD is a relatively new concept and many large legacy systems predate it. This paper presents the approach one company followed in applying OOAD techniques to an existing 2.5 million line code base. We present an iterative process that provides an avenue for the software to evolve while balancing the needs of business and software engineering. Our case study reveals the many pitfalls that can derail a software re-engineering effort, but also shows promising initial results from continued perseverance in this effort.