Context-oriented programming: A software engineering perspective

Salvaneschi, Guido; Ghezzi, Carlo; Pradella, Matteo

doi:10.1016/j.jss.2012.03.024

Cited by 95 publications

(48 citation statements)

References 16 publications

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“…They identify four essential language properties to support COP [142]: 1) Means to specify behavioural variations; 2) Means to group variations into layers; 3) Dynamic activation and deactivation of layers based on context; 4) Means to explicitly and dynamically control the scope of layers. Salvaneschi et al [106] give an overview of the COP techniques from the perspective of software engineering, recognising it as an apparently natural approach for this kind of systems. They acknowledge that supporting dynamic adaptation through proper language-level abstractions allows addressing the issues of adaptive software and avoid the decision logic for adaptive applications' behaviour to be scattered.…”

Section: Emerging Programming Paradigmsmentioning

confidence: 99%

Engineering context-aware systems and applications: A survey

Alegre

Augusto

Clark

2016

Journal of Systems and Software

176

137

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Context-awareness is an essential component of systems developed in areas like Intelligent Environments, Pervasive & Ubiquitous Computing and Ambient Intelligence. In these emerging fields, there is a need for computerized systems to have a higher understanding of the situations in which to provide services or functionalities, to adapt accordingly. The literature shows that researchers modify existing engineering methods in order to better fit the needs of context-aware computing. These efforts are typically disconnected from each other and generally focus on solving specific development issues. We encourage the creation of a more holistic and unified engineering process that is tailored for the demands of these systems. For this purpose, we study the state-of-the-art in the development of context-aware systems, focusing on: A) Methodologies for developing context-aware systems, analysing the reasons behind their lack of adoption and features that the community wish they can use; B) Context-aware system engineering challenges and techniques applied during the most common development stages; C) Context-aware systems conceptualization.

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Section: Emerging Programming Paradigmsmentioning

confidence: 99%

Engineering context-aware systems and applications: A survey

Alegre

Augusto

Clark

2016

Journal of Systems and Software

176

137

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“…Context-Oriented Programming (COP) [Hirschfeld et al 2008;Salvaneschi et al 2012] has been advocated to program autonomic systems [Salvaneschi et al 2011]. It exploits ad-hoc explicit language-level abstractions to express context-dependent behavioral variations and their run-time activation.…”

Section: Related Workmentioning

confidence: 99%

A Formal Approach to Autonomic Systems Programming: The SCEL Language

Nicola

2015

Formal Aspects of Component Software

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The autonomic computing paradigm has been proposed to cope with size, complexity and dynamism of contemporary software-intensive systems. The challenge for language designers is to devise appropriate abstractions and linguistic primitives to deal with the large dimension of systems, and with their need to adapt to the changes of the working environment and to the evolving requirements. We propose a set of programming abstractions that permit to represent behaviors, knowledge and aggregations according to specific policies, and to support programming context-awareness, self-awareness and adaptation. Based on these abstractions, we define SCEL (Software Component Ensemble Language), a kernel language whose solid semantic foundations lay also the basis for formal reasoning on autonomic systems behavior. To show expressiveness and effectiveness of SCEL's design, we present a Java implementation of the proposed abstractions and show how it can be exploited for programming a robotics scenario that is used as a running example for describing features and potentials of our approach.

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“…In this section, we provide a short introduction to COP. The reader interested to a more general analysis and an overview of the existing COP languages can refer to the survey [8].…”

Section: Context-oriented Programmingmentioning

confidence: 99%

“…A comparison of the existing COP languages with a performance evaluation of the available solutions can be found in [38]. Our recent work [8] surveys the available solutions and compares them from a software engineering standpoint.…”

Section: Related Workmentioning

confidence: 99%

ContextErlang: A language for distributed context-aware self-adaptive applications

Salvaneschi

Ghezzi

Pradella

2015

Science of Computer Programming

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Please cite this article in press as: G. Salvaneschi et al., ContextErlang: A language for distributed context-aware self-adaptive applications, Sci. Comput. Program. (2015), http://dx.doi.org/10.1016/j.scico. 2014.11.016 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. ContextErlang AbstractSelf-adaptive software modifies its behavior at run time to satisfy changing requirements in a dynamic environment. Context-oriented programming (COP) has been recently proposed as a specialized programming paradigm for contextaware and adaptive systems. COP mostly focuses on run time adaptation of the application's behavior by supporting modular descriptions of behavioral variations. However, self-adaptive applications must satisfy additional requirements, such as distribution and concurrency, support for unforeseen changes and enforcement of correct behavior in the presence of dynamic change. Addressing these issues at the language level requires a holistic design that covers all aspects and takes into account the possibly cumbersome interaction of those features, for example concurrency and dynamic change. We present ContextErlang, a COP programming language in which adaptive abstractions are seamlessly integrated with distribution and concurrency. We define ContextErlang's formal semantics, validated through an executable prototype, and we show how it supports formal proofs that the language design ensures satisfaction of certain safety requirements. We provide empirical evidence that ContextErlang is an effective solution through case studies and a performance assessment. We also show how the same design principles that lead to the development of ContextErlang can be followed to systematically design contextual extensions of other languages. A concrete example is presented concerning ContextScala.

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Context-oriented programming: A software engineering perspective

Cited by 95 publications

References 16 publications

Engineering context-aware systems and applications: A survey

Engineering context-aware systems and applications: A survey

A Formal Approach to Autonomic Systems Programming: The SCEL Language

ContextErlang: A language for distributed context-aware self-adaptive applications

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