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A constraint specification approach to building flexible workflows

机译:一种约束规范方法,用于构建灵活的工作流程

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摘要

Process support systems, such as workflows, are being used in a variety of domains. However, most areas of application have focused on traditional production-style processes, which are characterised by predictability and repetitiveness. Application in non-traditional domains with highly flexible process is still largely unexplored. Such flexible processes are characterised by lack of ability to completely predefine and/or an explosive number of alternatives. Accordingly we define flexibility as the ability of the process to execute on the basis of a partially defined model where the full specification is made at runtime and may be unique to each instance. In this paper, we will present an approach to building workflow models for such processes. We will present our approach in the context of a non-traditional domain for workflow, deployment, which is, degree programs in tertiary institutes. The primary motivation behind our approach is to provide the ability to model flexible processes without introducing non-standard modelling constructs. This ensures that the correctness and verification of the language is preserved. We propose to build workflow schemas from a standard set of modelling constructs and given process constraints. We identify the fundamental requirements for constraint specification and classify them into selection, termination and build constraints. We will detail the specification of these constraints in a relational model. Finally, we will demonstrate the dynamic building of instance specific workflow models on the basis of these constraints.
机译:流程支持系统(例如工作流)正在各种领域中使用。但是,大多数应用领域都集中在传统的生产方式流程上,这些流程的特点是可预测性和重复性。高度灵活的过程在非传统领域中的应用仍未开发。这种灵活的过程的特征在于缺乏完全预定义的能力和/或数量众多的替代方案。因此,我们将灵活性定义为过程在部分定义的模型的基础上执行的能力,其中完整的规范在运行时制定,并且对于每个实例可能是唯一的。在本文中,我们将介绍一种为此类流程构建工作流模型的方法。我们将在工作流,部署的非传统领域(即大专院校的学位课程)的背景下介绍我们的方法。我们的方法背后的主要动机是提供在不引入非标准建模构造的情况下对灵活流程进行建模的能力。这样可以确保保留语言的正确性和验证性。我们建议从一组标准的建模构造和给定的过程约束中构建工作流方案。我们确定约束规范的基本要求,并将其分为选择,终止和构建约束。我们将在关系模型中详细说明这些约束的规范。最后,我们将在这些约束的基础上演示实例特定工作流模型的动态构建。

著录项

  • 作者

    Mangan PJ; Sadiq S;

  • 作者单位
  • 年度 2003
  • 总页数
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类

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