关键词: 统一建模语言, 面向方面, 关注分离, 实时系统

Abstract: Real-time systems could be modeled by using aspect-oriented programming (AOP) technology based on UML. Timing requirements could be separated from the systems and expressed as a time-aspect independence of the systems. So the time-aspect can be designed concurrently, and the time feature of the systems can be managed by the unified model. The time-aspect could be woven into systems to compose real-time systems based on the AOP technology only when needed for a particular application. Real-time systems could be modeled from the static structure, dynamic behaviors and weaving of the time-aspect. The model extends UML to meet the need of AOP technology and the time model, and improves the usability of the software. Finally an elevator case was given as an example.

Key words: UML, aspect-orientation, separation of concerns, real-time systems