NDLI: Quantifying aspects in middleware platforms

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Quantifying aspects in middleware platforms

Content Provider	ACM Digital Library
Author	Zhang, Charles Jacobsen, Hans-Arno.
Abstract	Middleware technologies such as Web Services, CORBA and DCOM have been very successful in solving distributed computing problems for a large family of application domains. As middleware systems are getting widely adopted and more functionally mature, it is also increasingly difficult for the architecture of middleware to achieve a high level of adaptability and configurability, due to the limitations of traditional software decomposition methods. Aspect oriented programming has brought us new design perspectives because it permits the superimpositions of multiple abstraction models on top of one another. It is a very powerful technique in separating and simplifying design concerns. In this paper, we first show that, through the quantification of aspects in the legacy implementations, the modularity of middleware architecture is greatly hindered by the ubiquitous existence of tangled logic. We then go one step further by factoring out a number of aspects identified in the mining work and re-implementing them as aspect programs. The aspect oriented re-factorization allows us to apply a set of software engineering metrics to quantify the changes of the re-factored system in both the structural complexity and the runtime performance. The aspect oriented re-factoring proves that the aspect oriented programming is capable of composing orthogonal design requirements. The final "woven" system is able to correctly provide both the fundamental functionality and the "aspectized" functionality with negligible overhead and a leaner architecture. Further more, the configurability of middleware is dramatically increased because the "aspectized" features can be configured in and out during the compile-time.
Starting Page	130
Ending Page	139
Page Count	10
File Format	PDF
ISBN	1581136609
DOI	10.1145/643603.643617
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2003-03-17
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Aspect oriented programming Aspect mining Software architecture Distributed systems Evaluation and metrics Middleware
Content Type	Text
Resource Type	Article

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