Model Driven Engineering Languages and Systems

Volume 5301 of the series Lecture Notes in Computer Science pp 341-355

Sufficient Criteria for Consistent Behavior Modeling with Refined Activity Diagrams

  • Stefan JurackAffiliated withPhilipps-Universität Marburg
  • , Leen LambersAffiliated withTechnische Universität Berlin
  • , Katharina MehnerAffiliated withSiemens, Corporate Technology
  • , Gabriele TaentzerAffiliated withPhilipps-Universität Marburg

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In use case-driven approaches to requirements modeling, UML activity diagrams are a wide-spread means for refining the functional view of use cases. Early consistency validation of activity diagrams is therefore desirable but difficult due to the semi-formal nature of activity diagrams. In this paper, we specify well-structured activity diagrams and define activities more precisely by pre- and post- conditions. They can be modeled by interrelated pairs of object diagrams based on a domain class diagram. This activity refinement is based on the theory of graph transformation and paves the ground for a consistency analysis of the required system behavior. A formal semantics for activity diagrams refined by pre- and post-conditions allows us to establish sufficient criteria for consistency. The semi-automatic checking of these criteria is supported by a tool for graph transformation.