Making use case slices manage variability in aspect-based product Line

Use case slice, clearly lacks composition mechanism due to which it is difficult to manage variabilities in Software Product Lines. A use case slice can only convey the design of a single member of a product line. Aspect-based modeling of use case slices look to be a promising solution but there are few issues within their composition mechanism. Aspect-based modeling of use case slices clearly lack a strong and familiar algebraic model and also fails to address precedence management issues among artifacts such as pointcuts and advices. This paper suggests a composition mechanism, for aspect-based implementation of use case slices, which would provide a familiar algebraic model and will resolve issues related to precedence management. In this paper we have discussed about a hypothetical aspect-based Expressions Product Line (EPL) and have shown how the use case slices can be used to model the variabilities in EPL.