Abstracting a Reusable Software Architecture from Existing Application System

摘要

The necessary for analyzing an existing application system, the urgency of software architecture reuse, the importance to analysis reuse and design reuse according to domain engineering principle, as well as the adaptability of software architecture to different target application systems are mentioned in this article. The Key parts of this article are the whole architecture of automatic mode, the aggregation of the graphic element classes, the inherited tree of graphic element classes, the Petri Nets model of selecting switch element classes. and the relationship between domain engineering and legacy system evolution. Finally the improvement of the project is also proposed.