Van der Aalst recently proposed a set of workflow patterns to characterize the kinds of control flow that appear frequently in workflow processes. These patterns are useful for evaluating the capabilities of workflow systems and models. In this paper we provide implementations of the workflow patterns in Orc, a new process calculus for orchestrating wide-area computations. A key feature of the Orc implementations is that they are expressed as definitions that can be reused as needed.
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机译：van der Aalst最近提出了一组工作流模式，以表征在工作流程过程中经常出现的控制流程。这些模式对于评估工作流系统和模型的功能是有用的。在本文中，我们提供ORC中的工作流模式的实现，用于协调广域计算的新流程微积分。 ORC实现的一个关键特征是它们被表示为可以根据需要重用的定义。
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