MultEcore: Combining the Best of Fixed-Level and Multilevel Metamodelling

Mainstream metamodelling approaches based on the OMG standards, such as EMF, have a fixed number of modelling levels. Despite their partial acceptance in industry, limitations on the number of levels has led to problems such as lack of flexibility and mixed levels of abstraction. Existing multilevel modelling approaches have already tackled these problems by providing features like deep modelling and linguistic extension. However, these approaches have face challenges like hesitation of adoption by industry due to the lack of an ecosystem which frameworks like EMF already have. In this paper, we (1) propose a conceptual framework for multilevel modelling that tackles such challenges, (2) illustrate the approach with two examples, and (3) present the tool MultEcore, which makes the proposed framework directly compatible with EMF, combining the best of the two worlds of fixedand multilevel metamodelling approaches.