Classpects in Practice: A Test of the Unified Aspect Model
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Computer Science—the theory, representation, processing, communication and use of information—is fundamentally transforming every aspect of human endeavor. The Department of Computer Science at Iowa State University advances computational and information sciences through; 1. educational and research programs within and beyond the university; 2. active engagement to help define national and international research, and 3. educational agendas, and sustained commitment to graduating leaders for academia, industry and government.
History
The Computer Science Department was officially established in 1969, with Robert Stewart serving as the founding Department Chair. Faculty were composed of joint appointments with Mathematics, Statistics, and Electrical Engineering. In 1969, the building which now houses the Computer Science department, then simply called the Computer Science building, was completed. Later it was named Atanasoff Hall. Throughout the 1980s to present, the department expanded and developed its teaching and research agendas to cover many areas of computing.
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1969-present
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- College of Liberal Arts and Sciences (parent college)
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Abstract
The most successful model of aspect-oriented modularity to date is that embodied in the AspectJ language. We have shown that the AspectJ notions of aspect and class can be unified in a new module construct that we called the classpect, and that this new model is significantly simpler and able to accommodate a broader set of requirements for modular solutions to complex integration problems. We embodied our unified model in the Eos language design, in which the basic unit of modularity is a classpect ; and we realized the model in a concrete and usable form in the Eos compiler. The main contribution of this paper is a fairly demanding experimental evaluation of the Eos component model, language, and compiler in terms of their application to two significant systems: ConcernCov, a tool for concern-based code coverage analysis of test suites (20K LOC), and the Eos compiler, a near-industrial strength classpect-oriented extension to the CSharp language (50K LOC). Our assessments of the resulting designs provides evidence for the potential design structuring benefits of the Eos model, the usability of the Eos language, and the practical utility of our language implementation in the Eos compiler. In a nutshell, we contribute a demonstration of the immediate practical value of our conceptual work.