Research on Modeling and Model Converting Approaches Based on MDA

Driven Architecture (MDA), which makes models as the basic development unit, improves the level of abstraction of software development. Design patterns, which offer a reusable design solution for object-oriented development, are favorable for improving software model reusability and system maintainability. Considering these advantages, this article presents a approach that under MDA framework introduce design patterns to model and convert model, that is, offer a kind of unit modeling support mechanism based on meta model through MOF (meta object facility) defining meta model of pattern unit, define transformation rules from unit meta model to EJB platform which conduct a unit modeling and converting by using QVT standard description, finally, give mapping rules and basic algorithm of converting.