Sufficient Criteria for Consistent Behavior Modeling with Refined Activity Diagrams

  • Authors:
  • Stefan Jurack;Leen Lambers;Katharina Mehner;Gabriele Taentzer

  • Affiliations:
  • Philipps-Universität Marburg, Germany;Technische Universität Berlin, Germany;Siemens, Corporate Technology, Germany;Philipps-Universität Marburg, Germany

  • Venue:
  • MoDELS '08 Proceedings of the 11th international conference on Model Driven Engineering Languages and Systems
  • Year:
  • 2008

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Abstract

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.