Modularity-Oriented Refactoring

Bryton, Sergio; Abreu, Fernando Brito e

doi:10.1109/csmr.2008.4493330

Cited by 6 publications

(5 citation statements)

References 16 publications

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“…In order to cope with the deterioration of the latter, refactoring strategies can be employed. It has been argued in [10,15], that approaches considering developer expertise-to directly refactor the source code-seldom allow for a significant improvement in software modularity. The difficulties are mainly related to the problem of detecting possible candidates for refactoring.…”

Section: Related Workmentioning

confidence: 99%

“…If these move refactorings are applied in such a way that the cohesion within modules increases, while the coupling between modules decreases, the modularity of the software improves without affecting the behavior and functionality of the software. While move refactoring is considered as a standard technique to remodularize software, approaches in the literature emphasize difficulties in its practical application that are due to cascades of subsequent move refactorings triggered by the moving of a single software construct [10,15]. To avoid this caveat, we take a complex systems perspective and frame the remodularization of software based on move refactoring with a scheme similar to simulated annealing [22], in which the system is driven to an equilibrium state [8] by simple local changes.…”

Section: Introductionmentioning

confidence: 99%

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Automated software remodularization based on move refactoring

Zanetti

Tessone

Scholtes

et al. 2014

Proceedings of the 13th International Conference on Modularity

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Modular design is a desirable characteristic of complex software systems that can significantly improve their comprehensibility, maintainability and thus quality. While many software systems are initially created in a modular way, over time modularity typically degrades as components are reused outside the context where they were created. In this paper, we propose an automated strategy to remodularize software based on move refactoring, i.e. moving classes between packages without changing any other aspect of the source code. Taking a complex systems perspective, our approach is based on complex networks theory applied to the dynamics of software modular structures and its relation to an n-state spin model known as the Potts Model. In our approach, nodes are probabilistically moved between modules with a probability that nonlinearly depends on the number and module membership of their adjacent neighbors, which are defined by the underlying network of software dependencies. To validate our method, we apply it to a dataset of 39 JAVA open source projects in order to optimize their modularity. Comparing the source code generated by the developers with the optimized code resulting from our approach, we find that modularity (i.e. quantified in terms of a standard measure from the study of complex networks) improves on average by 166 ± 77 percent. In order to facilitate the application of our method in practical studies, we provide a freely available ECLIPSE plug-in.

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Section: Related Workmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Automated software remodularization based on move refactoring

Zanetti

Tessone

Scholtes

et al. 2014

Proceedings of the 13th International Conference on Modularity

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“…A abordagem de reestruturação proposta neste trabalho é composta de sete atividades (Figura 1) e objetiva aprimorar a qualidade estrutural do software por meio da movimentação de classes entre pacotes. Para avaliar se esse objetivo foi atingido, são utilizadas medidas de software [Bryton;Abreu, 2008]. Por isso, em 1 (Figura 1), o software é medido por sete medidas de software, divididas em dois grupos: i) Grupo de Avaliação, avalia se os ganhos proporcionados à estrutura do software são consistentes e aprimoraram a qualidade do software, sendo composto pelas medidas Ca, Ce e LCOM4; e ii) Grupo de Reestruturação, guia o processo de reestruturação, indicando se uma estrutura obtida durante a reestruturação é melhor/pior que a solução atual, sendo composto pelas medidas MPC, CBO, RFC e TCC.…”

Section: Abordagem De Reestruturaçãounclassified

Uma Abordagem Para Reestruturação de Sistemas de Software Orientados a Objetos

Santos¹,

Júnior²,

Costa³

2016

Anais Do XV Simpósio Brasileiro De Qualidade De Software (SBQS 2016)

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A qualidade de software é uma das principais preocupações desde as fases iniciais de desenvolvimento do software. Para isso, o software deve evoluir constantemente para atender as necessidades dos usuários e do ambiente (lei da mudança contínua). Por isso, são realizadas manutenções no software. Mas, se as manutenções forem conduzidas em discordância aos padrões de projeto empregados e às melhores práticas de programação, o software se tornará progressivamente mais acoplado e menos coeso, degradando sua qualidade, pois se torna menos modularizado. Assim, neste artigo, é proposta uma abordagem para reestruturar sistemas de software baseada na movimentação de classes entre pacotes para aprimorar a modularização e a manutenibilidade desses sistemas, melhorando sua qualidade estrutural. A movimentação de classes é determinada por uma heurística de otimização combinatória (Simulated Annealing). O resultado da avaliação indica que essa abordagem aprimora simultaneamente o acoplamento e a coesão do software, movimentando baixo percentual de classes, sem afetar estrutura de pacotes do software.

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“…A significant amount of research has been conducted in the past decades on the complexity of software programs [23], and software complexity metrics have been used for many purposes such as predicting error rates, detecting design flaws, assessing modularity, supporting refactoring decisions, estimating maintenance costs or identifying pieces of software that should be re-engineered or migrated to another paradigm [24][25][26][27][28][29]. Several authors have proposed to adapt software complexity metrics for analyzing the complexity of process models.…”

Section: A Metrics Definitionmentioning

confidence: 99%

Definition and Validation of Metrics for ITSM Process Models

Abreu

Porciuncula

Freitas

et al. 2010

2010 Seventh International Conference on the Quality of Information and Communications Technology

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-Process metrics can be used to establish baselines, to predict the effort required to go from an "as-is" to a "to-be" scenario or to pinpoint problematic ITSM process models. Several metrics proposed in the literature for business process models can be used for ITSM process models as well.This paper formalizes some of those metrics and proposes some new ones, using the Metamodel-Driven Measurement (M2DM) approach that provides precision, objectiveness and automatic collection. According to that approach, metrics were specified with the Object Constraint Language (OCL), upon a lightweight BPMN metamodel that is briefly described. That metamodel was instantiated with a case study consisting of two ITSM processes with two scenarios ("as-is" and "to-be") each. Values collected automatically by executing the OCL metrics definitions, upon the instantiated metamodel, are presented.Using a larger sample with several thousand meta-instances, we analyzed the collinearity of the formalized metrics and were able to identify a smaller set, which will be used to perform further research work on the complexity of ITSM processes.

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Modularity-Oriented Refactoring

Cited by 6 publications

References 16 publications

Automated software remodularization based on move refactoring

Automated software remodularization based on move refactoring

Uma Abordagem Para Reestruturação de Sistemas de Software Orientados a Objetos

Definition and Validation of Metrics for ITSM Process Models

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