一种基于特征的功能构件语义模型

omponent is a pivotal technology in the domain of software reuse. By self-variation mechanism, component can be reused in different business contexts. Current component semantics models are lack of strict descriptions on variation. In this paper, a feature-based semantics model for functional component is presented, in which feature space is used to describe component semantics, and component variation is expressed by five types of feature variation mechanism. In addition, according to the classification of features, structures of three types of functional component and interdependencies between them are deeply researched, and the mapping between component semantics model and business models is also proposed. Finally the reusability metrics for functional component is discussed briefly.