---
_id: '34447'
abstract:
- lang: eng
  text: "The Object Constraint Language (OCL) was introduced to support the specification
    of constraints for UML diagrams and is mainly used to formulate invariants and
    operation pre- and postconditions. Though OCL is also applied in behavioral diagrams,
    e.g., as guards for state transitions, it is currently not possible to specify
    constraints concerning the dynamic behavior and timing properties of such diagrams.\r\n\r\nThis
    article discusses OCL’s application for the dynamic behavior of UML Statechart
    diagrams and presents an OCL extension for specification of state-oriented time-bounded
    constraints.We introduce operations to extract state configurations from diagrams
    and define additional predicates over states and state configurations. The semantics
    of our OCL extension is given by employing time-bounded Computational Tree Logic
    (CTL) formulae. An example of a flexible manufacturing system with automated guided
    vehicles demonstrates the application of our extension."
author:
- first_name: Stephan
  full_name: Flake, Stephan
  last_name: Flake
- first_name: Wolfgang
  full_name: Müller, Wolfgang
  id: '16243'
  last_name: Müller
citation:
  ama: 'Flake S, Müller W. An OCL Extension for Real-Time Constraints. In: Clark T,
    Warmer J, eds. <i>Advances in Object Modelling with the OCL</i>. Springer-Verlag;
    2002:150-171. doi:<a href="https://doi.org/10.1007/3-540-45669-4_8">10.1007/3-540-45669-4_8</a>'
  apa: Flake, S., &#38; Müller, W. (2002). An OCL Extension for Real-Time Constraints.
    In T. Clark &#38; J. Warmer (Eds.), <i>Advances in Object Modelling with the OCL</i>
    (pp. 150–171). Springer-Verlag. <a href="https://doi.org/10.1007/3-540-45669-4_8">https://doi.org/10.1007/3-540-45669-4_8</a>
  bibtex: '@inbook{Flake_Müller_2002, place={Berlin, Heidelberg}, title={An OCL Extension
    for Real-Time Constraints}, DOI={<a href="https://doi.org/10.1007/3-540-45669-4_8">10.1007/3-540-45669-4_8</a>},
    booktitle={Advances in Object Modelling with the OCL}, publisher={Springer-Verlag},
    author={Flake, Stephan and Müller, Wolfgang}, editor={Clark, T. and Warmer, J.},
    year={2002}, pages={150–171} }'
  chicago: 'Flake, Stephan, and Wolfgang Müller. “An OCL Extension for Real-Time Constraints.”
    In <i>Advances in Object Modelling with the OCL</i>, edited by T. Clark and J.
    Warmer, 150–71. Berlin, Heidelberg: Springer-Verlag, 2002. <a href="https://doi.org/10.1007/3-540-45669-4_8">https://doi.org/10.1007/3-540-45669-4_8</a>.'
  ieee: 'S. Flake and W. Müller, “An OCL Extension for Real-Time Constraints,” in
    <i>Advances in Object Modelling with the OCL</i>, T. Clark and J. Warmer, Eds.
    Berlin, Heidelberg: Springer-Verlag, 2002, pp. 150–171.'
  mla: Flake, Stephan, and Wolfgang Müller. “An OCL Extension for Real-Time Constraints.”
    <i>Advances in Object Modelling with the OCL</i>, edited by T. Clark and J. Warmer,
    Springer-Verlag, 2002, pp. 150–71, doi:<a href="https://doi.org/10.1007/3-540-45669-4_8">10.1007/3-540-45669-4_8</a>.
  short: 'S. Flake, W. Müller, in: T. Clark, J. Warmer (Eds.), Advances in Object
    Modelling with the OCL, Springer-Verlag, Berlin, Heidelberg, 2002, pp. 150–171.'
date_created: 2022-12-15T11:38:20Z
date_updated: 2022-12-15T11:38:47Z
department:
- _id: '672'
doi: 10.1007/3-540-45669-4_8
editor:
- first_name: T.
  full_name: Clark, T.
  last_name: Clark
- first_name: J.
  full_name: Warmer, J.
  last_name: Warmer
keyword:
- Model Check     Temporal Logic     Object Constraint Language     Execution Path     Kripke
  Structure
language:
- iso: eng
page: 150 - 171
place: Berlin, Heidelberg
publication: Advances in Object Modelling with the OCL
publication_identifier:
  isbn:
  - 978-3-540-45669-8
publisher: Springer-Verlag
status: public
title: An OCL Extension for Real-Time Constraints
type: book_chapter
user_id: '5786'
year: '2002'
...