Towards Separation of Concerns in Model Transformation Workflows

Model-driven software product lines are an emerging topic in research and industry, as they promise higher development speed and easier adaptability to customer needs. The generation facilities for the products, however, still have a static nature: specification languages for the composition of model transformations sequences (model transformation workflows) up to now only support the specification of simple control flows with conditional execution. Thus, separation of concerns with respect to variable product features is impossible. To flexibly compose model transformation workflows depending on the feature selection, we express them by a dedicated and clearly scoped domainspecific modeling language (DSML). This facilitates to use aspect-oriented model weaving techniques to preprocess the workflow depending on the concrete product configuration and, thus, prevents tangling of concerns in the base workflow artifacts. This position paper motivates the need for aspectoriented model transformation orchestration during application engineering and presents our concepts to achieve this goal. 1.