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Issues in Mapping HRT-HOOD to UMLSilvia Mazzini, Massimo D'Alessandro, Marco Di Natale, Giuseppe Lipari and Tullio VardanegaTo appear at Euromicro Conference on Real-Time Systems (ECRTS03), Porto, Portugal, 2-4 July 2003
AbstractHRT-HOOD has methodological strengths that deserve to be preserved in the face of the commercial decline of HOOD technology. The UML meta-model, on the other hand, has a level of flexibility that makes it an especially attractive platform to express the specific real-time design minded features of the HRT-HOOD method. The object-oriented contamination of the method that results from mapping HRT-HOOD onto UML raises methodological issues that we deem of interest to the real-time community at large. This paper discusses three such issues in particular: the prevalence of objects over classes in real-time design, with the consequent inversion of the standard object-oriented development paradigm; the need to derive classes ``by example'', which arises from the demand to allow multiple, yet static, instances of real-time objects initially designed as singleton; the opportunity of reuse-oriented component-based real-time development, which descends from using interfaces instead of classes as the target of associations among objects.
10 Mar 2003 at 21:02:27 |