Achieving Extensibility Through

Achieving Extensibility Through - Term paper reference

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Achieving Extensibility Through Product-Lines and Domain-Specific Languages: A Case Study DON BATORY, CLAY JOHNSON, BOB MACDONALD, and DALE VON HEEDER University of Texas at Austin This is a case study in the use of product-line architectures ( PLAs ) and domain-specific languages ( DSLs ) to design an extensible command-and-control simulator for Army fire support. The reusable components of our PLA are layers or “aspects” whose addition or removal simultaneously impacts the source code of multiple objects in multiple, distributed programs. The complexity of our compo- nent specifications is substantially reduced by using a DSL for defining and refining state machines, abstractions that are fundamental to simulators. We present preliminary results that show how our PLA and DSL synergistically produce a more flexible way of implementing state-machine-based simulators than is possible with a pure Java implementation. Categories and Subject Descriptors: D.2.1 [ Software Engineering ]: Requirements/ Specifications— Methodologies (e.g., object-oriented, structured); D.2.2 [ Software Engineering ]: Design Tools and Techniques— Evolutionary prototyping ; State diagrams ; D.2.10 [ Software Engineering ]: Design— Methodologies and representations ; D.2.11 [ Software Engineering ]: Software Architectures— Domain-specfic architectures ; Languages ; D.2.13 [ Software Engineer- ing ]: Reusable Software— Domain engineering ; D.2.m [ Software Engineering ]: Miscellaneous— Rapid prototyping General Term: Design Additional Key Words and Phrases: GenVoca, domain-specific languages, simulation, aspects, refinements 1. INTRODUCTION Software evolution is a costly yet unavoidable consequence of a successful appli- cation. Evolution occurs when new features are added and existing capabilities This work was supported in part by the University of Texas Applied Research Labs and the U.S. Department of Defense Advanced Research Projects Agency in cooperation with the U.S. Wright Laboratory Avionics Directorate under contract F33615-91C-1788. Preliminary version presented at the International Conference on Software Reuse, Vienna, Austria, July 2000. Updated for ACM TOSEM September 2001. Authors’ addresses: D. Batory, Department of Computer Sciences, University of Texas at Austin, Austin, TX 78712; email: [email protected]; C. Johnson, B. MacDonald, and D. von Herder, Applied Research Labs, University of Texas at Austin, Austin Texas 78713; email: { clay, bob, drv } Permission to make digital/hard copy of part or all of this work for personal or classroom use is granted without fee provided that the copies are not made or distributed for profit or commercial advantage, the copyright notice, the title of the publication, and its date appear, and notice is given that copying is by permission of the ACM, Inc. To copy otherwise, to republish, to post on servers, or to redistribute to lists, requires prior specific permission and/or a fee.
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Achieving Extensibility Through - Term paper reference

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