In many large organizations, the model transformations allowing the engineers to more or less automatically go from platformindependent models (PIM) to platform-specific models (PSM) are increasingly seen as vital assets. As tools evolve, it is critical that these transformations are not prisoners of a given CASE tool. Considering in this paper that a CASE tool can be seen as a platform for processing a model transformation, we propose to reflectively apply the MDA to itself. We propose to describe models of transformations that are CASE tool independent (platform-independent transformations or PIT) and from them to derive platform-specific transformations (PST). We show how this approach might help in reaching a consensus in the RFP on MOF QVT, including a solution for the declarative/imperative dilemma. We finally explore the consequences of this approach on the development life-cycle.

A common need in system, software, and hardware engineering is to describe system architectures, especially in demanding domains such as aeronautics, defence or telecommunications. Kitalpha is an environment to develop and execute MBE (Model-Based Engineering) workbenches for description of system architecture. Kitalpha uses the DSL technique in order to develop such development environments accurately, quickly, and safely. This paper presents the main features of Kitalpha and lessons learned from a DSL-based development.

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