Distributed workflow upon linkable coordination artifacts

  • Authors:
  • Andrea Omicini;Alessandro Ricci;Nicola Zaghini

  • Affiliations:
  • DEIS, ALMA MATER STUDIORUM—Università di Bologna, Cesena, Italy;DEIS, ALMA MATER STUDIORUM—Università di Bologna, Cesena, Italy;DEIS, ALMA MATER STUDIORUM—Università di Bologna, Cesena, Italy

  • Venue:
  • COORDINATION'06 Proceedings of the 8th international conference on Coordination Models and Languages
  • Year:
  • 2006

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Abstract

Coordination infrastructures can be used for the general-purpose support of WfMSs (workflow management systems). Suitably-expressive coordination artifacts can be specialised as workflow engines, encapsulating workflow rules expressed in terms of coordination laws. In this paper, we focus on the issue of inter-organisational workflow (IOW), and show how the issue of multiple, interdependent, distributed workflows requires coordination artifacts to be linkable, so as to create a network of inter-connected coordination flows. After discussing a model of workflow engine based on ReSpecT tuple centres, we introduce a distributed workflow architecture based on TuCSoN, exploiting a logic-based workflow language. In particular, we focus on the definition of a scoping mechanism, and show how this enable workflows to be dynamically governed and distributed upon a coordination infrastructure based on artifact linkability. An example of a VE (virtual enterprise) workflow is finally discussed.