【摘要】 软件需求的复杂化对现代软件的构建技术提出了很高的要求。构件技术在一定程度上解决了这个问题,但它很难处理不断扩充的功能与原有系统的适配与连接。本文提出了元数据建模的方法,通过使用基于XML描述的元数据并且利用某些面向对象语言本身的自省机制(如Java的反射机制)来连接构件和基本框架的技术,以达到构建灵活系统的目的。本文同时给出了北航软件工程研究所使用元数据成功构建可扩展的QESAT(软件分析与测试工具)的示例。更多还原

【Abstract】 Due to ever increasing complexity of the software requirement,it is now becoming harder to construct mod- ern software. Although present component technique is useful in some ways in solving this problem, it leaves pendent the connection and adaptation between the constantly expanded functions and the origin system. Proposed in this pa- per is a method of metadata modeling to construct flexible systems, in which the XML-based metadata and the reflec- tion mechanism of some object-oriented languages, e.g. Java, are applied to connect both the expended components and the core framework. A successful demonstration of metadata modeling for an extensible software QESAT(Quality Engineering: Software Analysis and Test Tool) is also presented.更多还原