Current software development tools let developers model a software system and generate program code from the models to run the system. However, generating code and installing a non-trivial system induces a time delay between changing the model and executing it that makes rapid model prototyping awkward if not impossible. This paper presents the architecture of a virtual machine for UML that interprets UML models without any intermediate code-generation step. The paper shows how to embed UML in a metalevel architecture so that a key property of model-based systems, the causal connection between models and model instances, is guaranteed. With this architecture, changes to a model have immediate effects on its execution, providing users with rapid feedback about the model's structure and behavior. This approach supports model innovation better than today's code-generation approaches.
Dirk Riehle, Steven Fraleigh, Dirk Bucka-Lassen, and Nosa Omorogbe. "The Architecture of a UML Virtual Machine." In Proceedings of the 2001 Conference on Object-Oriented Programming Systems, Languages, and Applications (OOPSLA '01). ACM Press, 2001. Page 327-341.
The paper is available as a PDF file.
The actual OOPSLA presentation is available as an annotated PDF file as well.
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