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Integrating a state transition diagram with call processing program using a dataflow technique

Systems and Computers in Japan 1998年第8期28卷

作者： Hirotoshi Shirasu Hitoshi Sashida Electronics Engineering Department Kogakuin University Tokyo Japan 163-91 Hitachi Information Systems Co. Ltd. Japan

A switching program and the state transition diagram describing its specifications are normally produced as separate documents. This, however, results in a difficulty for understanding and managing a software system. Programmers require some means to unify both documents in order to solve the problem. We have developed a switching software design method called data driven logic (DDL), which uses a dataflow diagram to describe call processing processes. Taking note of the similarity between these two diagrams, i.e., the state transition diagram and dataflow diagram, we have devised a unification method in which a switching state is regarded as a program component in DDL design. This new method, which creates a unified document of specification and program description, has eliminated the difficulty and has realized high understandability in switching software. © 1997 Scripta Technica, Inc. Syst Comp Jpn, 28(8): 17–24, 1997

关键词： state transition diagram dataflow diagram visual programming call processing program specification description

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A Java/CORBA-based visual program composition environment for PSEs

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Concurrency and Computation: Practice and Experience 2000年第8期12卷

作者： Matthew S. Shields Omer F. Rana David W. Walker Maozhen Li David Golby Department of Computer Science Cardiff University PO Box 916 Cardiff CF24 3XF U.K. Department of Mathematical Modelling British Aerospace Sowerby Research Center PO Box 5 Filton Bristol BS32 7QW U.K.

A problem solving environment (PSE) is a complete, integrated computing environment for composing, compiling and running applications in a specific problem area or domain. A visual programming composition environment (VPCE) is described, which serves as a user interface for a PSE, and uses Java and CORBA to provide a framework of tools to enable the construction of scientific applications from components. The VPCE consists of a component repository, from which the user can select off-the-shelf or in-house components, a graphical composition area on which components can be combined, various tools that facilitate the configuration of components, the integration of legacy codes into components and the design and building of new components. The VPCE produces output using dataflow techniques in the form of a task graph, annotated with a performance model plus constraints for each component, expressed in XML. In addition, the VPCE supports a domain specific expert system based on JESS (Ernest Friedman-Hill, JESS: The Java Expert System Shell. See web site at: http://***/jess/, 1999) to guide the user in component selection and to perform integrity checking. Copyright © 2000 John Wiley & Sons, Ltd.

关键词： Problem solving environments visual programming intelligent interfaces scientific computing Java/CORBA

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