基于角色模型的MDA开发

讨论了已有的一些角色模型在重用性和动态性方面的不足，提出了一个适合于MDA开发的层次化的角色模型以及相应的映射规则，给出了该模型的实现方法，并介绍了一个该模型在银行范例系统中的应用．该层次化的角色模型对应于MDA的PIM，它的实现模型对应于MDA的PSM．使用该方法不仅可提高角色模型的重用性，而且在设计层可实现角色的动态特性，有助于实现从PIM到PSM的变换．

MDA development based on role model

The deficiency of some existing role models in reusability and dynamics is discussed. This paper proposes a layered role model and the corresponding mapping rule suited to MDA development, provides the implementation method of this model and introduces the application about this model in the demo system of the bank. The layered role model corresponds to PIM of MDA and its realization model is correspondent to PSM of MDA. Using this method can not only raise the reusability of role model, but also implement dynamic characteristic of a role in the design layer and contribute to the realization of the conversion from PIM to PSM.