A Language for Task Orchestration and Its Semantic Properties

  • David Kitchin
  • William R. Cook
  • Jayadev Misra
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4137)

Abstract

Orc is a new language for task orchestration, a form of concurrent programming with applications in workflow, business process management, and web service orchestration. Orc provides constructs to orchestrate the concurrent invocation of services – while managing time-outs, priorities, and failure of services or communication. In this paper, we show a trace-based semantic model for Orc, which induces a congruence on Orc programs and facilitates reasoning about them. Despite the simplicity of the language and its semantic model, Orc is able to express a variety of useful orchestration tasks.

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References

  1. 1.
    Aalst, W.M.P.V.D., Hofstede, A.H.M.T., Kiepuszewski, B., Barros, A.P.: Workflow patterns. Distrib. Parallel Databases 14(1), 5–51 (2003)CrossRefGoogle Scholar
  2. 2.
    Misra, J., Cook, W.R.: Computation orchestration: A basis for wide-area computing. Journal of Software and Systems Modeling (May 2006), Available for download at: http://dx.doi.org/10.1007/s10270-006-0012-1
  3. 3.
    Cook, W.R., Patwardhan, S., Misra, J.: Workflow patterns in Orc. In: Ciancarini, P., Wiklicky, H. (eds.) COORDINATION 2006. LNCS, vol. 4038, pp. 82–96. Springer, Heidelberg (2006)CrossRefGoogle Scholar
  4. 4.
    Rosario, S., Benveniste, A., Haar, S., Jard, C.: SLA for web services orchestrations (unpublished, manuscript 2006)Google Scholar
  5. 5.
    Kozen, D.: On Kleene algebras and closed semirings. In: Rovan, B. (ed.) MFCS 1990. LNCS, vol. 452, pp. 26–47. Springer, Heidelberg (1990)CrossRefGoogle Scholar
  6. 6.
    Milner, R.: Communication and Concurrency. International Series in Computer Science (C.A.R. Hoare, series editor). Prentice-Hall, Englewood Cliffs (1989)MATHGoogle Scholar
  7. 7.
    Kitchin, D., Cook, W.R., Misra, J.: Semantic properties of asynchronous Orc. Technical Report TR-06-32, University of Texas at Austin, Department of Computer Sciences (2006)Google Scholar
  8. 8.
    Eshuis, R., Dehnert, J.: Reactive Petri Nets for Workflow Modeling. In: van der Aalst, W.M.P., Best, E. (eds.) ICATPN 2003. LNCS, vol. 2679, pp. 296–315. Springer, Heidelberg (2003)CrossRefGoogle Scholar
  9. 9.
    Puhlmann, F., Weske, M.: Using the π-Calculus for Formalizing Workflow Patterns. In: van der Aalst, W.M.P., Benatallah, B., Casati, F., Curbera, F. (eds.) BPM 2005. LNCS, vol. 3649, pp. 153–168. Springer, Heidelberg (2005)CrossRefGoogle Scholar
  10. 10.
    van Glabbeek, R.: On specifying timeouts. In: Workshop on Algebraic Process Calculi: The First Twenty Five Years and Beyond. Electronic Notes in Theoretical Computer Science (to appear, 2005)Google Scholar
  11. 11.
    van der Aalst, W.M.P., Aldred, L., Dumas, M., ter Hofstede, A.H.M.: Design and implementation of the YAWL system. In: Persson, A., Stirna, J. (eds.) CAiSE 2004. LNCS, vol. 3084, pp. 142–159. Springer, Heidelberg (2004)CrossRefGoogle Scholar
  12. 12.
    Hoare, C.: Communicating Sequential Processes. Prentice Hall International, Englewood Cliffs (1984)Google Scholar
  13. 13.
    Milner, R.: Communicating and Mobile Systems: the π-Calculus. Cambridge University Press, Cambridge (1999)Google Scholar
  14. 14.
    Riely, J., Hennessy, M.: Distributed processes and location failures. Theoretical Computer Science 266(1–2), 693–735 (2001)CrossRefMathSciNetMATHGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • David Kitchin
    • 1
  • William R. Cook
    • 1
  • Jayadev Misra
    • 1
  1. 1.The University of Texas at Austin 

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