Model Patterns for Model Transformations in Model Driven Development

Model driven development is a popular approach to mas-ter the complexity of computer based systems, but it is still missing well-established technologies for model transforma-tions. A lot of research has been done to address this sub-ject, most of it tends towards highly expressive and highly specialized transformation languages. This paper takes a contra point to this trend, proposing the transformation im-plementation language Mopa (Model Pattern), which is less expressive but provides more flexibility. Mopa is indepen-dent of the chosen modelling techniques, it allows the re-alization of different transformation approaches, and it is integrated into the Java programming language, hence easy to integrate into existing environments. Mopa is described with formal syntax and semantics, and this paper shows how to use Mopa to implement different existing transformation approaches. 1