Oscar Nierstrasz

TL;DR: In this paper, the authors present the state-of-the-art and identify research challenges when developing, deploying and managing self-adaptive software systems, focusing on four essential topics of selfadaptation: design space for selfadaptive solutions, software engineering processes, from centralized to decentralized control, and practical run-time verification & validation.

TL;DR: This paper lays the foundations of COP, shows how dynamic layer activation enables multi-dimensional dispatch, illustrates the application of COP by examples in several language extensions, and demonstrates that COP is largely independent of other commitments to programming style.

TL;DR: How traits overcome the problems arising with the different variants of inheritance is demonstrated, how traits can be implemented effectively is discussed, and the experience applying traits to refactor an existing class hierarchy is summarized.

TL;DR: This paper addresses problem of understanding and reengineering such object-oriented legacy systems by presenting a set of "reengineering patterns" - recurring solutions that experts apply while reengineering and maintaining object- oriented systems.

TL;DR: A new type framework is proposed that characterizes objects as regular (finite state) processes that provide guarantees of service along public channels and proposes a new notion of subtyping for active objects that extends Wegner and Zdonik's "principle of substitutability" to non-uniform service availability.