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Theses

Composition of Software Architectures

Abstract : Computer systems are becoming more and more complex and need to provide an ever increasing number of non-functional properties, such as reliability, availability, security, etc.. Such non-functional properties are usually provided to a system by general mechanisms called middleware. They are thus called, to illustrate that they are supposed to be used between the hardware (and operating system) and the application software levels, masking therefore the differences of the particular underlying system and allowing applications to be used with different underlying infrastructures. However, as the need for more non-functional properties increases, system architects are soon faced with the case where there is no available middleware that will provide all the required non-functional properties. Then, they either have to develop the needed middleware infrastructure from scratch or try to reuse multiple existing middleware infrastructures, where each one provides some of the required properties. In this thesis, we present a method for automatically composing middleware architectures, in order to obtain an architecture which provides certain properties. To arrive at the automation of composition, we first show how one can reformulate this problem into a model-checking problem. This reformulation gives a formal definition to the composition problem and allows us to reuse the methods and tools which have been developed for model-checking. Then, we present subsequent refinements to our basic method, used for avoiding the state-explosion problem for architectures of a larger size. To avoid stateexplosion, we show how it is possible to retrieve the structural information, present in the initial middleware architectures we wish to compose, and exploit it for constraining the search-space we have to investigate. Additional information present in the initial architectures constrains even further the search-space, thus allowing us to obtain a method for composing middleware architectures which can be used in practise. In this way, we facilitate the systematic study and analysis of the different compositions and provide a method for constructing quality systems.
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Submitted on : Thursday, April 1, 2010 - 1:47:09 PM
Last modification on : Friday, May 25, 2018 - 12:02:02 PM
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  • HAL Id : tel-00469412, version 1

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Christos Kloukinas. Composition of Software Architectures. Computer Science [cs]. Université Rennes 1, 2002. English. ⟨tel-00469412⟩

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