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On Improving Variability by Separation of Concerns in Logical Changes. Zoltán Fazekas Faculty of Informatics and Information Technology Slovak University of Technology Bratislava. Shortcomings of Versioning Systems.
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On Improving Variability by Separation of Concerns in Logical Changes Zoltán Fazekas Faculty of Informatics and Information Technology Slovak University of Technology Bratislava
Shortcomings of Versioning Systems • Versioning is one of the most commonly used ways to manage software product families. • The most versioning systems do not separate modifications within a single line of code. • This leads to overlapping changes causing problems like • Dependence of logical changes • Contradiction of logical changes • making manual adaptation of variants necessary.
Intentional Change Composition Model (ICCM) • ICCM aims at separating modifications within individual lines of code. • Inspired by separation of concerns approaches like Software Plans, Spotlight, Feature Selector • Main principles of ICCM: • Fine-grained (character-level) deltas • Concerns as boolean variables • Reasons of deltas as propositional formulas over concerns • Selection of variants by value binding of concerns