一种运用模式将CIM转换到PIM的方法

An Approach to Transforming from CIM to PIM Using Pattern

模型转换在MDA软件开发方法中扮演着非常重要的角色,尤其是从CIM到PIM的转换。本文给出了一种从CIM转换到PIM的方法。在CIM中,我们通过特征模型来组织需求,同时用软件体系结构来组织PIM中的各个要素。这个转换中的核心内容是模式的应用。在CIM的需求模型中,本文将特征分层,从而将需求分为不同的层次。同时模式也被分为不同的层级,其中包括体系结构模式和设计模式。针对不同层级的特征模型,应用不同层级的模式进行变换,从而得到分层的体系结构。当需求发生变化时,首先确定这种特征的变化是在哪个层级上的,然后在不同的体系结构层级上变换相应的功能,从而实现PIM的相应变化。本文最后以自行开发的Object-Z的支持工具为例来说明所给出的方法。

Model Transformation plays an important role in MDA,especially in the transformation from CIM to PIM. This paper presents an approach to transforming CIM to PIM in a feature-oriented view. We use the feature model to construct user＇s requirements in CIM, and use software architecture to organize elements in PIM level. The application of pattern is the core in this transformation. We partition the features in different layer. So the requirement is partitioned into different layer too. At same time, the pattern is partitioned into different layer such as software architecture pattern and design pattern. We apply these patterns in different layered feature model, then produce a layered architecture. Once the requirement changes, the function will change in the corresponding architecture. Finally, we use Object- Z support tool we developed as an example to demonstrate our approach.