摘要
在工作流管理系统中需要广泛地使用表达式,它是过程定义中转移条件的重要组成部分,它的求值结果是推进过程实例向前执行的重要依据。不仅明确给出了表达式的词法规则与语法规则,而且具体介绍了如何利用Java CC和JJtree工具及Interpreter设计模式来设计和实现表达式解析器。
Expression is widely used in workflow management, because it is the important part of transition conditions in process definition and its result is the important direction of continuing to execute the process instance. Not only lexical rules and syntactic rules definitely is provided, but also concretely how to use the JavaCC and JJtree and interpreter pattern to design and implement the expression interpreter is introduced,
出处
《计算机工程与设计》
CSCD
北大核心
2007年第12期3020-3022,共3页
Computer Engineering and Design
关键词
工作流管理系统
过程定义
转移条件
表达式
表达式解析器
workflow management system
process definition
transition conditions
expression
expression interpreter
