Aspect-oriented requirements engineering with AoURN

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Software requirements engineering focuses on the elicitation, analysis, specification, validation, and management of software requirements. Goal-oriented and scenario-oriented modelling techniques have shown to be particularly well suited for the discovery and analysis of requirements. The User Requirements Notation (URN) integrates two complementary visual languages: the Goal-oriented Requirement Language (GRL) for business goals, non-functional requirements, alternatives, decisions and rationales, and the Use Case Maps (UCMs) scenario notation for causal flows of behavior superimposed on architectural components. Various links between these two views are also supported in URN. In the past year, URN started being extended with a new way of composing goals and scenarios based on the concept of "aspects", leading to AoGRL and AoUCM. Aspects enable modellers to better encapsulate crosscutting concerns leading to improved modularity, reusability, scalability, and maintainability of models.