Object-extending class transformations |
| |
Authors: | Karl J. Lieberherr Walter L. Hürsch Cun Xiao |
| |
Affiliation: | (1) College of Computer Science, Northeastern University, Cullinane Hall, 02115 Boston, MA, USA |
| |
Abstract: | Reorganisation and evolution of class hierarchies is important for object-oriented system development and has received considerable attention in the literature. The contributions of this paper are: (1) a formal study of a set of extension relations and transformations on class hierarchies; (2) a presentation of a small set of primitive transformations which form a minimal and complete basis for the extension relations; and (3) an analysis of the impact of these transformations at the object level.The study leads to a better understanding of evolution and reuse of object-oriented software and class hierarchies. It also provides a terminology and a means of classification for design reuse. The theory presented in this paper is based on the Demeter data model, which gives a concise mathematical foundation for classes and their inheritance and part-of relationships. Parts of the theory have been implemented in the Demeter SystemTM C++, a CASE tool for object-oriented design and programming. |
| |
Keywords: | Object-oriented programming and design Software reuse Schema evolution Software evolution Formal software engineering techniques |
本文献已被 SpringerLink 等数据库收录! |