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表达式求值器在工作流中的应用 被引量:3

The Application of Evaluation of Expression in Workflow
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摘要 在工作流管理系统中需要广泛地使用表达式。工作流管理系统需要在定义时对表达式进行静态的编译,发现其中的错误;在运行时能够动态地对表达式求值。文章提出了一种基于Java的工作流引擎设计中用JavaCC和JJtree设计和开发表达式求值器的实现方法。 Expression is widely used in Workflow Management,We need static compile the expression when define Workflow Management to find errors; Expression need dynamic evaluate when it is run.Article advances one way which use JacaCC and JJtree design and empolder evaluation of expression base on java.
作者 曹署 刘建勋
机构地区 湖南科技大学
出处 《电脑知识与技术》 2006年第3期121-122,178,共3页 Computer Knowledge and Technology
关键词 工作流引擎 表达式求值 工作流管理系统 Workflow engine Evaluation of Expression Workflow Management System
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