Features, modularity, and variation points

Batory, Don; Höfner, P.; Möller, Bernhard; Zelend, Andreas

doi:10.1145/2528265.2528269

Cited by 12 publications

(19 citation statements)

References 27 publications

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“…Inspired by research that integrates compositional and annotative approaches [4][27] [16] [14], we propose to combine the respective advantages of the two by unifying their underlying structure. Instead of classical file systems, we employ a snippet graph for the representation and organization of the source code.…”

Section: A Snippet-based Approach To Separate Featuresmentioning

confidence: 99%

“…[4]), we propose to employ the passage concept. In Figure 8, feature A overrides the method foo of feature Base.…”

Section: Towards Handling Overridingmentioning

confidence: 99%

“…To combine the advantages of compositional and annotative approaches, current research strives for the integration of the two [4] [27][16] [14]. While the theoretical research of Walkingshaw et al [27] and Batory et al [4] provide a formal basis for an integration, Kästner et al [14][16] put an integration into practice.…”

Section: Related Workmentioning

confidence: 99%

“…To differentiate between our concepts and pure compositional and annotative approaches, we pick up the mathematical foundation for an integration of the two proposed by Batory et al [4] and show how their ideas for modules with variation points (VPs) map onto our snippet-based representation. First, they define that a VP can appear multiple times across a single or a set of document(s).…”

Section: Related Workmentioning

confidence: 99%

“…Thereby, we omit classical directories and files and build our approach upon snippets [19] [20], coloring [15] [4] and abstract syntax trees (ASTs). Comparable to directories and files, yet with advantages regarding reusability, we propose a set of units organizing the unified representation of the source code in a feature-oriented manner.…”

Section: Introductionmentioning

confidence: 99%

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Separating features using colored snippet graphs

Behringer

Kirsch

Rothkugel

2014

Proceedings of the 6th International Workshop on Feature-Oriented Software Development

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In feature-oriented software product lines, two complementary approaches to implement features exist: compositional and annotative ones. To combine the respective advantages, a unified representation of the two on the file-system level is desirable, yet unavailable. We pick up this demand and propose a novel concept for separating features using colored snippet graphs instead of directories and files. In particular, our proposed ideas are based on snippets, ASTs and coloring, and enable the implementation of product lines with both compositional and annotative views on real documents. As a basis for future tools, we provide a conceptual overview of our approach, discuss our ideas for leveraging snippets, and demonstrate applicability using an example scenario.

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Section: A Snippet-based Approach To Separate Featuresmentioning

confidence: 99%

“…[4]), we propose to employ the passage concept. In Figure 8, feature A overrides the method foo of feature Base.…”

Section: Towards Handling Overridingmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Separating features using colored snippet graphs

Behringer

Kirsch

Rothkugel

2014

Proceedings of the 6th International Workshop on Feature-Oriented Software Development

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Structured Document Algebra in Action

Batory

Höfner

Köppl

et al. 2015

Lecture Notes in Computer Science

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A Structured Document Algebra (SDA) defines modules with variation points and how such modules compose. The basic operations are module addition and replacement. Repeated addition can create nested module structures. SDA also allows the decomposition of modules into smaller parts. In this paper we show how SDA modules can be used to deal algebraically with Software Product Lines (SPLs). In particular, we treat some fundamental concepts of SPLs, such as refinement and refactoring. This leads to mathematically precise formalization of fundamental concepts used in SPLs, which can be used for improved Feature-Oriented Software Development (FOSD) tooling.

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Extended Feature Algebra

Höfner

Möller

2016

Journal of Logical and Algebraic Methods in Programming

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Feature Algebra was introduced as an abstract framework for feature-oriented software development. One goal is to provide a common, clearly defined basis for the key ideas of feature-orientation. The algebra captures major aspects of feature-orientation, such as the hierarchical structure of features and feature composition. However, as we will show, it is not able to model aspects at the level of code, i.e., situations where code fragments of different features have to be merged. In other words, it does not reflect details of concrete implementations.In this paper we first present concrete models for the original axioms of Feature Algebra which represent the main concepts of feature-oriented programs. This shows that the abstract Feature Algebra can be interpreted in different ways. We then use these models to show that the axioms of Feature Algebra do not properly reflect all aspects of feature-orientation from the level of directory structures down to the level of actual code. This gives motivation to extend the abstract algebra, which is the second main contribution of the paper. We modify the axioms and introduce the concept of an Extended Feature Algebra. As third contribution, we introduce more operators to cover concepts like overriding in the abstract setting.Dedication It is our pleasure to dedicate this paper to José Nuno Oliveira on the occasion of his 60th birthday. José has been very active in the field of formal methods and, particularly, in algebraic techniques for that, such as relation algebra and category theory. Therefore we think it adequate to contribute a study on an algebra for feature-oriented system development, not only for cross-fertilisation, but hopefully also for enjoyment. Best wishes, José, for yourself, your work and for fruitful further interaction, as in the past years!

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Features, modularity, and variation points

Cited by 12 publications

References 27 publications

Separating features using colored snippet graphs

Separating features using colored snippet graphs

Structured Document Algebra in Action

Extended Feature Algebra

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