Abstract
Variability is essential for adaptive software systems, because it captures the space of alternative adaptations a system is capable of when it needs to adapt. In this work, we propose to capture variability for an adaptation space in terms of a three dimensional model. The first dimension captures requirements through goals and reflects all possible ways of achieving these goals. The second dimension captures supported variations of a system’s architectural structure, modeled in terms of connectors and components. The third dimension describes supported system behaviors, by modeling possible sequences for goal fulfillment and task execution. Of course, the three dimensions of a variability model are inter-twined as choices made with respect to one dimension have impact on the other two. Therefore, we propose an incremental design methodology for variability models that keeps the three dimensions aligned and consistent. We illustrate our proposal with a case study involving the meeting scheduling system exemplar.
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Notes
- 1.
Each component must be able to satisfy on its own the assigned goal.
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Acknowledgment
This work has been supported by the ERC advanced grant 267856 “Lucretius: Foundations for Software Evolution” (April 2011 – March 2016, http://www.lucretius.eu) and Brazilian research agencies CAPES and CNPq (process numbers 402991/2012-5, 485368/2013-7 and 461777/2014-2).
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Angelopoulos, K., Souza, V.E.S., Mylopoulos, J. (2015). Capturing Variability in Adaptation Spaces: A Three-Peaks Approach. In: Johannesson, P., Lee, M., Liddle, S., Opdahl, A., Pastor López, Ó. (eds) Conceptual Modeling. ER 2015. Lecture Notes in Computer Science(), vol 9381. Springer, Cham. https://doi.org/10.1007/978-3-319-25264-3_28
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