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The growth of applications developed with the support of model transformations makes reuse a required practice, specially when applied to transformation assets (e.g. transformation chains, algorithms, and configuration files). In order to promote reuse one must consider the different implementations, communalities, and variants among these assets. In this domain, a couple techniques have been used as solutions to adapt reusable assets for specific needs. However, so far, no work has discussed their combined use in real software projects. In this paper, we present a new tool named WCT, which can be used to adapt transformation assets. Moreover, through lessons learned in industry, we address some reuse techniques devoted to adapt these assets.

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Context: Model comparison plays a central role in many software engineering activities. However, a comprehensive understanding about the state-of-the-art is still required. Goal: This paper aims at classifying and performing a thematic analysis of the current literature. Method: For this, we have followed well-established empirical guidelines to define and perform a systematic mapping study. Results: Some studies (14 out of 40) provide generic model comparison techniques, rather than specific ones for UML diagrams. Conclusion: Fine-grained techniques are still required to support ever-present and complex model comparison tasks during the evolution of design models.

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