Measuring Qualities for OSGi Component-Based Applications

International audienceComponent-based software engineering (CBSE) begins to reach a certain level of maturity. Indeed, for the development of complex applications the use of component paradigm has become common. Therefore, the evaluation of the quality of these applications becomes necessary. In this context, the use of metrics is considered very important. Several metrics specific to component-based applications have been proposed. However, any of these metrics gained the consensus of the CBSE community and mainly there is no proposed tool to support them. As a large part of frameworks for component-based application development is based on object-oriented technology, we propose to use some object-oriented (OO) metrics to evaluate component-based applications produced with this kind of framework. Indeed, these metrics became a standard in OO community. So, they are well-defined, well-known and empirically validated. To identify which object-oriented metrics are useful for the evaluation of component-based applications, we have conducted an experimental study on 10 OSGi applications. This study also gives us the opportunity to discuss on the respect by OSGi developers of some properties pointed out by the literatur

Measuring Qualities for OSGi Component-Based Applications

International audienceComponent-based software engineering (CBSE) begins to reach a certain level of maturity. Indeed, for the development of complex applications the use of component paradigm has become common. Therefore, the evaluation of the quality of these applications becomes necessary. In this context, the use of metrics is considered very important. Several metrics specific to component-based applications have been proposed. However, any of these metrics gained the consensus of the CBSE community and mainly there is no proposed tool to support them. As a large part of frameworks for component-based application development is based on object-oriented technology, we propose to use some object-oriented (OO) metrics to evaluate component-based applications produced with this kind of framework. Indeed, these metrics became a standard in OO community. So, they are well-defined, well-known and empirically validated. To identify which object-oriented metrics are useful for the evaluation of component-based applications, we have conducted an experimental study on 10 OSGi applications. This study also gives us the opportunity to discuss on the respect by OSGi developers of some properties pointed out by the literatur

Preserving architectural choices throughout the component-based software development process

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EntiMid : un middleware aux services de la maison

National audienceOne of the society challenges of tomorrow is the aging population. Often pointed as a possible solution for this issue, house automation can help elderly people stay at home as long as possible, and ease the coordination of the domain actors. In this context, this paper lists the requirements of such a system, showing that today's commercial solutions are not flexible enough to reach the necessary functional richness. According to these requirements, a set of properties a middleware should offer in order to be deployed at a city scale is identified. Then this paper describes the software architecture of a suitable middleware built over OSGi, respecting the listed properties. After that, an experience report of the deployment of this middleware, in the laboratory of the Université de Rennes 1 highlights the relevance of the proposed solution

Des langages pour améliorer le développement et la maintenance des logiciels à base de composants

La définition d'éléments pouvant contribuer à améliorer le développement et la maintenance des logiciels est l'objectif des travaux de recherche menés en Génie Logiciel. Mon domaine de recherche porte depuis 2003 sur la définition et l'usage de langages « supports » (c'est-à-dire complétant les langages de développement) ; ceci dans le but de faciliter et d'améliorer le développement et la maintenance des applications logicielles conçues à l'aide de composants. Mes travaux se trouvent au carrefour de plusieurs disciplines du Génie Logiciel : le développement orienté composant, les architectures des logiciels, la maintenance et l'évolution, la qualité et l'ingénierie dirigée par les modèles. Ce document constitue une synthèse de mes activités de recherche menées au cours des sept dernières années au sein de l'équipe SE du laboratoire VALORIA et de l'équipe-projet INRIA TRISKELL. Il commence par donner une vision assez personnelle des courants qui animent le Génie Logiciel et dresse un aperçu de l'état actuel de cette discipline. Puis il introduit les quelques notions dont la maîtrise est nécessaire pour évoluer dans les domaines dans lesquels se sont déroulées mes activités. Il retrace ensuite mon parcours thématique au cœur de ces disciplines et détaille mes travaux sur le contrôle de l'évolution des architectures, la sélection de composants et la documentation et l'exécution des bonnes pratiques de modélisation

found at the ENTCS Macro Home Page. A Methodological Approach to Choose Components in Development and Evolution Processes Abstract

Replace this file with prentcsmacro.sty for your meeting

Preserving Architectural Choices throughout the Component-based Software Development Process

International audienceIt is argued that architecture comprehension and regression testing of a software system are the most expensive maintenance activities. This is mainly due to the fact that architectural choices are either not explicit, at every stage of the software development process, or not preserved from one stage to another. In this paper, we present an Architectural Constraint Language (ACL) as a means to formally describe architectural choices at all the stages. This language is based on the UML's Object Constraint Language and on a set of MOF-compliant metamodels. We also present a prototype which validates the proposed approach. It allows the evaluation of ACL expressions at two stages and ensures, by using a transformation mechanism, that the constraints stated at one stage are subsequently preserved

Adapting OCL Constraints After a Refactoring of their Model Using an MDE Process

International audienceRefactoring is a kind of endogenous model transformation. Its aim is to restructure applications without changing their external behavior. Several studies have been carried out on the refactoring of UML models specifically on the refactoring of UML class diagram models. During refactoring, the OCL constraints associated with these UML class diagram models are omitted or manually rewritten, which often leads the system to an inconsistent state. We propose an approach to transform, as automatically as possible, these OCL constraints using the transformation model. This approach uses the used transformation model to find a sequence of basic refactoring operations that once applied to the initial model leads to the final model. Thus, we can use an already known results for OCL constraint transformations in case of stepwise model refactoring