Come, Let’s Play
Scenario-Based Programming Using LSCs and the Play-Engine
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Beschreibung
This book presents a powerful new language and methodology for programming complex reactive systems in a scenario-based manner. The language is live sequence charts (LSCs), a multimodal extension of sequence charts and UML's sequence diagrams, used in the past mainly for requirements. The methodology is play-in/play-out, an unusually convenient means for specifying inter-object scenario-based behavior
directly from a GUI or an object model diagram, with the surprising ability to execute that behavior, or those requirements, directly. The language and methodology are supported by a fully implemented tool – the Play-Engine – which is attached to the book in CD form.
The design of reactive systems is one of the most challenging problems in computer science. This books starts with a critical insight to explain the problem: there is a fundamental gap between the scenario-based way in which people think about such systems and the state-based way in which these systems are implemented. The book then offers a radical proposal to bridge this gap by means of playing scenarios. Systems can be specified by playing in scenarios and implemented by means of a Play-Engine that plays out scenarios. This idea is carried out and developed, lucidly, formally and playfully, to its fullest. The result is a compelling proposal, accompanied by a prototype software engine, for reactive systems design, which is bound to cause a splash in the software-engineering community. Moshe Vardi, Rice University, Houston, Texas, USA
Scenarios are a primary exchange tool in explaining system behavior to others, but their limited expressive power never made them able to fully describe systems, thus limiting their use. The language of Live Sequence Charts (LSCs) presented in this beautifully written book achieves this goal, and the attached Play-Engine software makes these LSCs really come alive. This is undoubtedly a key breakthroughthat will start long-awaited and exciting new directions in systems specification, synthesis, and analysis. Gérard Berry, Esterel Technologies and INRIA, Sophia-Antipolis, France
The approach of David Harel and Rami Marelly is a fascinating way of combining prototyping techniques with techniques for identifying behavior and user interfaces. Manfred Broy, Technical University of Munich, Germany
The play-in/play-out method and tool presented in this book is a powerful new approach to software and systems engineering and modeling based on formal methods and program semantics. The life sequence charts (LSC) as the language of this approach generalize the message sequence charts of UML and are presented in this book for the first time in a coherent and systematic way.
The method described is fascinating from the scientific point of view. The associated play-engine tool available from the authors' Web site has broad appeal to professionals in software engineering, systems engineering, and modeling and simulation.
THE book presenting the elegant and powerful new method and tool for software and systems engineering called Play-Engine Includes supplementary material: sn.pub/extras
Autor*in
David Harel
Themen in »Come, Let’s Play«
Live Sequence Charts Object-oriented Programming People Photoshop Elements Play-in/Play-out Scenario-Based Requirements Systems Engineering UML Sequence Charts Unified Modeling Language (UML) Visual Basic Visual Languages XML programming real-time semantics
Stimmen zu »Come, Let’s Play«
The design of reactive systems is one of the most challenging problems in computer science. This books starts with a critical insight to explain the difficulty of this problem: there is a fundamental gap between the scenario-based way in which people think about such systems and the state-based way in which these systems are implemented. The book then offers a radical proposal to bridge this gap by means of playing scenarios. Systems can be specified by playing in scenarios and implemented by means of a Play-Engine that plays out scenarios. This idea is carried out and developed, lucidly, formally and playfully, to its fullest. The result is a compelling proposal, accompanied by a prototype software engine, for reactive systems design, which is bound to cause a splash in the software-engineering community. Moshe Y. Vardi, Rice University, Houston, Texas, USA
Scenarios are a primary exchange tool in explaining system behavior to others, but their limited expressive power never made them able to fully describe systems, thus limiting their use. The language of Live Sequence Charts (LSCs) presented in this beautifully written book achieves this goal, and the attached Play-Engine software makes these LSCs really come alive. This is undoubtedly a key breakthrough that will start long-awaited and exciting new directions in systems specification, synthesis, and analysis. Gérard Berry, Esterel Technologies and INRIA, Sophia-Antipolis, France
The approach of David Harel and Rami Marelly is a fascinating way of combining prototyping techniques with techniques for identifying behavior and user interfaces. Manfred Broy, Technical University of Munich, Germany
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