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Proceedings of the 2007 international conference on Dynamic languages in conjunction with the 15th International Smalltalk Joint Conference 2007 - ICDL '07 - Encapsulating and exploiting change with changeboxes by Denker, Marcus; Gîrba, Tudor; Lienhard, Adrian; Nierstrasz, Oscar; Renggli, Lukas; Zumkehr, Pascal is a scholarly article available to read on EtoBox.

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Real world software systems change continuously to meet new demands. Most programming languages and development environments, however, are more concerned with limiting the effects of change rather than enabling and exploiting change. Various techniques and technologies to exploit change have been developed over the years, but there exists no common support for these approaches. We propose Changeboxes as a general-purpose mechanism for encapsulating change as a firstclass entity in a running software system. Changeboxes support multiple, concurrent and possibly inconsistent views of software artifacts within the same running system. Since Changeboxes are first-class, they can be manipulated to control the scope of change in a running system. Furthermore, Changeboxes capture the semantics of change. Changeboxes can be used, for example, to encapsulate refactorings, or to replay or analyze the history of changes. In this paper we introduce Changeboxes by means of a prototype implementation. We illustrate the benefits that Changeboxes offer for evolving software systems, and we present the results of a preliminary performance evaluation that assesses the costs associated with Changebox

Author

Denker, Marcus; Gîrba, Tudor; Lienhard, Adrian; Nierstrasz, Oscar; Renggli, Lukas; Zumkehr, Pascal

Publisher

ACM Press

Published

2007

Language

EN