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Seamless Object-Oriented Requirements Alexandr Naumchev Seamless Object-Oriented Requirements Alexandr Naumchev To cite this version: Alexandr Naumchev. Seamless Object-Oriented Requirements. Software Engineering [cs.SE]. Univer- sité Paul Sabatier - Toulouse III, 2019. English. NNT : 2019TOU30132. tel-02872242 HAL Id: tel-02872242 https://tel.archives-ouvertes.fr/tel-02872242 Submitted on 17 Jun 2020 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. THÈSETHÈSE En vue de l’obtention du DOCTORAT DE L’UNIVERSITÉ DE TOULOUSE Délivré par : l’Université Toulouse 3 Paul Sabatier (UT3 Paul Sabatier) Présentée et soutenue le 12 juillet 2019 par : Alexandr Naumchev Exigences orientées objets dans un cycle de vie continu Seamless Object-Oriented Requirements JURY M. YAMINE AIT-AMEUR Président du Jury MME SUSANNE GRAF Examinatrice MME CATHERINE DUBOIS Rapporteure MME ELISABETTA DI NITTO Rapporteure M. JEAN-MICHEL BRUEL Directeur de thèse M. BERTRAND MEYER Co-directeur de thèse École doctorale et spécialité : EDMITT - Ecole Doctorale Mathématiques, Informatique et Télécommunications de Toulouse Unité de Recherche : IRIT: Institut de Recherche en Informatique de Toulouse Directeur(s) de Thèse : M. Jean-Michel Bruel et M. Bertrand Meyer Rapporteurs : Mme Catherine Dubois et Mme Elisabetta Di Nitto ii To Mary Acknowledgement Many people were helping me in different ways while I was working on the thesis. As a human being with an imperfect memory, however, I can only highlight some of them here. Bertrand Meyer, for proposing an amazingly interesting research topic. Bertrand Meyer and Jean-Michel Bruel, for continuously correcting my path and relentlessly exercising all the crazy ideas coming out of my head. Bertrand Meyer, Manuel Maz- zara and Victor Rivera from Innopolis University; Jean-Michel Bruel, Florian Galinier and Sophie Ebersold from the University of Toulouse, for actively helping me grow my research ideas into publications. Manuel Mazzara, Andrey Sadovykh and Sergey Masi- agin from Innopolis University, for supporting my research administratively and finan- cially. Mansur Khazeev and Hamna Aslam from Innopolis University; Jean-Michel Bruel, Sophie Ebersold and Florian Galinier, for giving me the luxury of having them in the room when I was rehearsing the thesis defense. Alexander Chichigin and Larisa Safina from Innopolis University, for always willing to give their valuable technical advice. Elisabetta di Nitto from Politecnico di Milano and Catherine Dubois from ENSIIE, for providing their insightful feedback on the dissertation that allowed me to better understand the directions for further improvement. Susanne Graf from VER- IMAG, for the enormous amount of technical feedback on the dissertation that allowed me to greatly improve the writing and see future research directions. Tanya Stanko from Innopolis University, for introducing me to Manuel and Bertrand and thus initi- ating our fruitful collaboration. Inna Baskakova, for always smiling and helping with tons of paperwork appearing along the way. My wife Mary, for her unimaginable love and patience. My kids Mark and Kate, for giving rest to my brain, heart and soul. My parents Vladimir and Galina, my brother Yuri, for constantly expressing their pride of my work. My grandfather Georgy, for being an in-memory example of how passionate I should be about what I do. My grandfather Ruben, for being an invisible example of how brave I should be in what I do. My brother Nikolay, for being an example of how persistent I should be in what I do. With their help I can achieve everything that I can imagine. I would like to book a special place in this chapter, and in my heart, to the confer- ence and journal reviewers who rejected my submissions, thus forcing me to improve, improve and improve. iii iv The most important property of a program is whether it accomplishes the intention of its user. Sir Charles Antony Richard Hoare Résumé L’évolution constante des besoins des clients et des utilisateurs exige une réponse rapide de la part des équipes logicielles. Cela crée une forte demande pour un fonc- tionnement sans rupture des processus logiciels. L’intégration, la livraison et le dé- ploiement continus, également connus sous le nom de DevOps, ont fait d’énormes progrès en rendant les processus logiciels réactifs au changement. Ces progrès n’ont toutefois eu que peu d’effets sur les exigences en matière de logiciels. Aujourd’hui, la plupart des besoins sont exprimés en langage naturel. Cette approche a un grand pouvoir expressif, mais au détriment d’autres aspects de la qualité des exigences telles que la traçabilité, la réutilisabilité, la vérifiabilité et la compréhensibilité. Le défi est ici d’améliorer ces aspects sans sacrifier l’expressivité. Bertrand Meyer, dans sa méthode multi-exigences, relève ce défi et propose d’exprimer les besoins individuels en trois couches: sous-ensemble déclaratif d’un lan- gage de programmation orienté objet, langage naturel et notation graphique. Cette ap- proche a motivé et inspiré les travaux de la présente thèse. Alors que l’approche multi- exigences se concentre sur la traçabilité et la compréhensibilité, l’approche Seamless Object-Oriented Requirements (SOOR) présentée dans cette thèse prend en compte la vérifiabilité, la réutilisabilité et la compréhensibilité. Cette thèse explore l’hypothèse de Martin Glinz selon laquelle, pour soutenir la continuité, les exigences logicielles devraient être des objets. L’exploration confirme l’hypothèse et aboutit à un ensemble de méthodes basées sur des outils pour spécifier, valider, vérifier et réutiliser les exigences orientées objets. La contribution technique réutilisable la plus importante de cette thèse est une bibliothèque Eiffel prête à l’emploi de patrons de classes, qui capturent les modèles d’exigences logicielles récurrents. Les exigences orientées objets, concrètes et sans rupture, héritent de ces patrons et devien- nent des clients du logiciel spécifié. La construction de logiciels orientés objets devient la méthode de spécification, de validation et de réutilisation des exigences; la concep- tion par contrat devient la méthode de vérification de l’exactitude des implémentations par rapport aux exigences. Cette thèse s’appuie sur plusieurs expériences et montre que la nouvelle approche proposée favorise la vérifiabilité, la réutilisabilité et la compréhensibilité des exigences tout en maintenant l’expressivité à un niveau acceptable. Les expérimentations met- tent en oeuvre plusieurs exemples, dont certains sont des standards de l’état de l’art de l’ingénierie des exigences. Chaque expérimentation illustre un problème par un exem- ple, propose une solution générale et montre comment la solution règle le problème. Alors que l’expérimentation s’appuie sur Eiffel et son support d’outils avancés, tels v vi que la preuve et les tests automatisés, chaque idée présentée dans l’approche SOOR s’adapte conceptuellement à tout langage de programmation orienté objet typé sta- tiquement, possédant un mécanisme de généricité et un support élémentaire pour les contrats. Abstract The constantly changing customers’ and users’ needs require fast response from soft- ware teams. This creates strong demand for seamlessness of the software processes. Continuous integration, delivery and deployment, also known as DevOps, made a huge progress in making software processes responsive to change. This progress had little effect on software requirements, however. Specifying requirements still relies on the natural language, which has an enormous expressive power, but inhibits requirements’ traceability, verifiability, reusability and understandability. Promoting the problematic qualities without inhibiting the expressiveness too much introduces a challenge. Bertrand Meyer, in his multirequirements method, accepts the challenge and pro- poses to express individual requirements on three layers: declarative subset of an object-oriented programming language, natural language and a graphical notation. This approach has motivated and inspired the work on the present thesis. While multire- quirements focus on traceability and understandability, the Seamless Object-Oriented Requirements approach presented in the dissertation takes care of verifiability, reusabil- ity and understandability. The dissertation explores the Martin Glinz’ hypothesis that software requirements should be objects to support seamlessness. The exploration confirms the hypothesis and results in a collection of tool-supported methods for specifying, validating, verify- ing and reusing object-oriented requirements. The most significant reusable technical contribution of the dissertation is a ready-to-use Eiffel library of template classes that capture recurring software requirement patterns. Concrete seamless object-oriented re- quirements inherit from these templates and become clients of the specified software. Object-oriented software construction becomes the method for requirements specifi- cation, validation and reuse; Design by Contract becomes the method for verifying correctness of implementations against the requirements. The dissertation
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