Abstract. In Model-Driven Engineering (MDE), metamodels and domain-specific languages are key artifacts as they are used to define syntax and semantics of domain models. However, metamodels are evolving over time, requiring existing domain models to be co-evolved. Though approaches have been proposed for performing such co-evolution automatically, those approaches typically support only specific metamodel changes. In this paper, we present a vision of co-evolution between metamodels and models through consistent change propagation. The approach addressed co-evolution issues without being limited to specific metamodels or evolution scenarios. It relies on incremental management of metamodel-based constraints that are used to detect co-evolution failures (i.e., inconsistencies between metamodel and model). After failure detection, the approach automatically generates suggestions for correction (i.e., repairs for inconsistencies). Preliminary validation results are promising as they indicate that the approach computes correct suggestions for model adaptations, and that it scales and can be applied live without interrupting tool users.

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The engineering and maintenance of large (software) systems is an inherently collaborative process that involves diverse engineering teams, heterogeneous development artifacts, and different engineering tools. While teams have to collaborate continuously and their artifacts are often related, the tools they use are nearly always independent, single-user applications. These tools range from programming to modeling tools and cover a wide range of engineering disciplines. However, relations among the artifacts across these tools often remain undocumented and are handled in an adhoc manner. Keeping these artifacts in sync continues to be a key engineering challenge. In this paper, we present our vision of the DesignSpace, a novel engineering infrastructure for integrating diverse development artifacts and their relations. The DesignSpace supports distributed collaboration, a wide range of tools and development, maintenance , and evolution services including incremental consistency checking and transformation.

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