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Microservices simulator: An object-oriented framework for transactional causal consistency

SCIENCE OF COMPUTER PROGRAMMING 2025年 239卷

作者： Pereira, Pedro Silva, Antonio Rito Univ Lisbon INESC ID Inst Super Tecn Rua Alves Redol 9 P-1000029 Lisbon Portugal

The development of microservice systems is complex due to the impact consistency problems have on the business logic design. On the other hand, the implementation of a microservice requires extensive use of middleware technology, which delays the test and identification of the cases where consistency problems can occur. We introduce the Microservices Simulator object-oriented framework that supports the rapid prototyping of a microservice system designed according to the Transactional Causal Consistency model.

关键词： Microservices Simulator Transactional causal consistency

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SOA Services Identification and design Methods From Business Models: A Systematic Literature Review

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IEEE ACCESS 2025年 13卷 9879-9901页

作者： Blal, Redouane Leshob, Abderrahmane Mili, Hafedh Benzarti, Imen Hadaya, Pierre Rab, Raqeebir Univ Quebec Montreal Dept Analyt Operat & Technol Informat Montreal PQ H3C 3P8 Canada Ecole Technol Super Montreal Dept Genie Logiciel & TI Montreal PQ H3C 1K3 Canada Ahsanullah Univ Sci & Technol Dept Comp Sci & Engn Dhaka 1208 Bangladesh

Modern organizations are process-oriented. To remain competitive in the digital transformation era, these organizations design and implement Information systems (IS) to support their business processes. The emergence of the Service-oriented Architecture (SOA) style made it possible to design IS architectural models that meet software quality criteria and are aligned with the organizations' business models. However, designing such SOA services is a complex task that requires extensive knowledge and skills in software architecture and the business domain. Researchers and practitioners have proposed several methods to derive SOA services from business models during the last two decades. However, SOA design initiatives from business models still fail. Existing methods and processes to design process-aware IS have limitations related to their usability and implementation complexity. These limitations triggered the necessity for a survey that extracts more information about how to design SOA architectural models from business models. This work proposes a systematic literature review (SLR) to establish the state of the knowledge about the existing methods that derive service models from business models. This SLR provides practitioners, such as solutions architects, business architects, and application architects, a comprehensive overview of available methods to derive SOA architectural models from business models, helping them design SOA services and build effective software solutions. We selected forty-one primary studies published between 2006 and 2023. We compared selected methods according to seven specific criteria, namely: design life cycle coverage, detailed specification support, SoaML support, service granularity, the use of patterns, automation, and tool support. The results confirm that SOA is an established architectural style for building effective ISs that support organizations' business processes. As far as we observed from comparing selected methods accordi

关键词： Business Systematic literature review design methodology Biological system modeling Organizations Complexity theory Software object oriented modeling Microservice architectures Systematic review service-oriented architecture SOA business models service design model transformation model transformation

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Making use of design Patterns in IoT Middleware implementation 10

Making Use of Design Patterns in IoT Middleware Implementati...

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10th International Conference on Internet of Things, Big Data and Security, IoTBDS 2025

作者： Harjumaa, Lasse Kivelä, Ilkka Jyrkkä, Petri Hakala, Ismo Kokkola University Consortium Chydenius University of Jyväskylä Kokkola Finland

ISBN: (纸本)9789897587504

This paper describes the usage of object-oriented and microservice design patterns to enhance system maintainability. The project involved bringing together data from multiple sensor networks and providing single endpoint for client applications. The middleware consists of purpose-specific components, databases and various off-the-shelf IoT components. Key lessons learned include the role of design patterns in simplifying complex system interactions and improving understandability. The importance of a modular approach, where design patterns provide a structured framework that promote reuse of proven solutions and reduce technical complexity becomes clear during the implementation of the middleware. Copyright © 2025 by SCITEPRESS - Science and Technology Publications, Lda.

关键词： Maintainability

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System Configuration design of BIM object-oriented Database for Civil Engineering

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JOURNAL OF CONSTRUCTION ENGINEERING AND MANAGEMENT 2022年第12期148卷 04022130-04022130页

作者： Li, Shi-Dong Xu, Zhao-Dong Southeast Univ China Pakistan Belt & Rd Joint Lab Smart Disaster Nanjing 210096 Peoples R China

Building information modeling (BIM) creates tremendous value for civil engineering through information integration. Not only does it make the formulation of data storage strategies more important at the beginning of a civil engineering project, but it also shows the potential value of further research into a unified BIM model that highly integrates all information in the project life cycle. However, it is not easy to store all the information in the project life cycle into a unified BIM model. To achieve this goal, this study proposed a shareable BIM back-end data system object-oriented database for BIM front-end applications (BIM-OODB), and established its complete system configuration. Based on the database design theory, three main aspects of BIM-OODB design are discussed, namely use case design, architecture design, and schema design. Then, four demonstration cases were selected to discuss the system implementation process of BIM-OODB in building and infrastructure projects. The results show that BIM-OODB has the potential to enable all participants to work around the unified shareable data system throughout the project life cycle. This study provides a reference for civil engineers to formulate data storage strategies in the early stage of a civil engineering projects and IT engineers to develop civil engineering data applications.

关键词： Building information modeling (BIM) Database design Information systems object-oriented database (OODB) Civil engineering

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Using an object-oriented Approach in Foundry Production 3rd

Using an Object-Oriented Approach in Foundry Production

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International Conference on Reliable systems Engineering (ICoRSE) - 2023

作者： Ponomarenko, Olga Yevtushenko, Nataliia Кhoroshylov, Oleg Yevtushenko, Stepan Berlizeva, Tatyana Vorobyov, Mikhailo Lukianov, Ihor National Technical University "Kharkiv Polytechnic Institute" 2 Kirpicheva St. Kharkiv61002 Ukraine Ukrainian Engineering and Pedagogical Academy 16 Universitetskaya St. Kharkiv61003 Ukraine

ISBN: (纸本)9783031406270

In the current conditions, the use of modern technologies and equipment is an important factor in the survival and further development of the foundry. And this, in turn, requires a partial or complete reconstruction of the foundry. Therefore, improving the quality of designed objects based on the use of computer technology, a systematic approach to the design and reconstruction of modern industries, increasing their efficiency is an urgent problem of foundry production. The purpose of the work is to develop a methodology for designing and reconstructing foundries and sites using an object-oriented approach. The article proposes a new method in the design and reconstruction of foundries and their subsystems, based on the use of system analysis, reliability theory, hierarchical structures of graph theory, probabilistic automata, mathematical and simulation modeling. In the practice of foundry production, a mathematical model was proposed that made it possible to link the reliability parameters of equipment operation with the technology used and made it possible to create optimal structures for foundry subsystems. The use of the methodology allows, on the one hand, to reduce project costs, and on the other hand, to improve the quality of designed facilities by viewing a large number of options, reduce the degree of risk in the implementation of design solutions and the development of new production orders. An object-oriented approach in design and reconstruction can be used to evaluate the performance of existing foundries and their subdivisions;to select the optimal conditions for the production of castings obtained according to various technological schemes;during the development of new technologies;during the reconstruction of workshops with different nomenclature and serial production;in databases of expert systems;in the system of automated design and management of technological processes, structural divisions and the workshop as a whole;in the system of education

关键词： Reliability analysis

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Constraint-Logic object-oriented Programming on the Java Virtual Machine 22

Constraint-Logic Object-Oriented Programming on the Java Vir...

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37th Annual ACM Symposium on Applied Computing

作者： Winkelmann, Hendrik Kuchen, Herbert Univ Munster Munster Germany

ISBN: (纸本)9781450387132

Constraint-logic object-oriented programming is a paradigm by means of which multiple application areas, such as the formulation of and solving constraint-satisfaction problems, the systematic generation of object graphs, and test-case generation become language features. This paradigm has been implemented in the prototypical programming language Muli. Though the usefulness of aforementioned features has been demonstrated in the past, Muli has seen little practical adoption. The reasons for this is the performance of the current implementation of Muli and its technical incompatibility with existing systems. In this paper, we give further details on these limitations, derive desiderata for a new implementation of Muli and design a new system, Mulib, that enables the features of this paradigm on a standard Java virtual machine. In this context, we furthermore provide the means to efficiently make use of incremental constraint solvers in a parallel setting.

关键词： Constraint-logic object-oriented programming Program transformation Java bytecode

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REFRAME-A software framework for managing reactive dependencies in object-oriented applications

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SOFTWAREX 2023年 24卷

作者： Mijac, Marko Garcia-Cabot, Antonio Strahonja, Vjeran Univ Zagreb Fac Org & Informat Varazhdin Croatia Univ Alcala Dept Ciencias Comp Alcala De Henares Spain

In object-oriented (OO) applications, objects collaborate by invoking each other's behavior and data, thus forming dependencies. Sometimes, we need these dependencies to be reactive, so that, for example, an object automatically reacts to events and changes in other objects. The need for such dependencies often arises in eventdriven systems, graphical user interfaces (GUI), animation, spreadsheet systems, etc. While in some cases reactive dependencies form fairly simple structures, in cases of implementing complex calculation models reactive dependencies can be especially numerous and can form complex dependency graphs. Understanding such graphs and manually handling reactive dependencies is extremely challenging and error-prone. Paradigms such as Reactive Programming (RP) make this task easier by providing programming languages with built-in abstractions and mechanisms for handling reactive dependencies. However, in the OO context, developers have no available solutions capable of handling complex dependency graphs. Instead, they often resort to implementing their own solutions rooted in a well-known, but limited Observer design pattern. While improved design patterns have emerged over time, they present smaller-scale solutions, oriented only on design reuse. Developers still need to invest significant effort to implement and test the proposed design. This indicates that there is a need for a larger-scale and implementation-level solution that developers could (re)use out-of-the-box. Therefore, this paper presents a software framework named REFRAME which provides built-in abstractions, mechanisms and tools for handling reactive dependencies in OO context.

关键词： Software frameworks design science object-oriented paradigm Reactive paradigm

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Defining and Extracting Singleton design Pattern Information from object-oriented Software Program 14th

Defining and Extracting Singleton Design Pattern Information...

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14th International Conference on Computational Collective Intelligence (ICCCI)

作者： Nacef, Abir Khalfallah, Adel Bahroun, Sahbi Ben Ahmed, Samir Tunis El Manar Univ Lab Informat Syst Ind Fac Math Phys & Nat Sci Tunis FST Tunis Tunisia Tunis El Manar Univ Inst Super Informat ISI Lab Limt Tunis Tunisia

ISBN: (纸本)9783031162107;9783031162091

In software engineering (SE), improving the quality of code and design by relying on pre-established restructuring (refactoring), such as detection and injection of a design pattern are still challenging problems. In this article, we focus on the Singleton design pattern, in which we indicate its variants implementation and define 33 features that can identify this pattern in its standard and non-standard form. Significant information can be extracted by applying the structural and semantic analysis of the source code. So use this information;it becomes easier to identify a pattern and inject it. We created specific data using 20,000 code snippets. This data is used to train deep learning models called RNN-LSTM classifiers to extract information from object-oriented software systems. The empirical result proves that our proposed LSTM-RNN Classifier can successfully extract proposed information with excellent results in terms of prediction recall and F1-score.

关键词： Singleton design pattern RNN-LSTM Classifier object-oriented program analyses

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DFTpy: An efficient and object-oriented platform for orbital-freeDFTsimulations

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WILEY INTERDISCIPLINARY REVIEWS-COMPUTATIONAL MOLECULAR SCIENCE 2021年第1期11卷 e1482页

作者： Shao, Xuecheng Jiang, Kaili Mi, Wenhui Genova, Alessandro Pavanello, Michele Rutgers State Univ Dept Chem Newark NJ 07102 USA Rutgers State Univ Dept Phys 101 Warren St Newark NJ 07102 USA Kitware Inc 1712 US 9 Suite 300Clifton Pk New York NY USA

In silico materials design is hampered by the computational complexity of Kohn-Sham DFT, which scales cubically with the system size. Owing to the development of new-generation kinetic energy density functionals (KEDFs), orbital-free DFT (OFDFT) can now be successfully applied to a large class of semiconductors and such finite systems as quantum dots and metal clusters. In this work, we present DFTpy, an open-source software implementing OFDFT written entirely in Python 3 and outsourcing the computationally expensive operations to third-party modules, such as NumPy and SciPy. When fast simulations are in order, DFTpy exploits the fast Fourier transforms from PyFFTW. New-generation, nonlocal and density-dependent-kernel KEDFs are made computationally efficient by employing linear splines and other methods for fast kernel builds. We showcase DFTpy by solving for the electronic structure of a million-atom system of aluminum metal which was computed on a single CPU. The Python 3 implementation is object-oriented, opening the door to easy implementation of new features. As an example, we present a time-dependent OFDFT implementation (hydrodynamic DFT) which we use to compute the spectra of small metal clusters recovering qualitatively the time-dependent Kohn-Sham DFT result. The Python codebase allows for easy implementation of application programming interfaces. We showcase the combination of DFTpy and ASE for molecular dynamics simulations of liquid metals. DFTpy is released under the MIT license. This article is categorized under: Software > Quantum Chemistry Electronic Structure Theory > Density Functional Theory Data Science > Computer Algorithms and Programming

关键词： DFT materials science TDDFT

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Optimizing Software Development through Data Access Speed using object-Relational Mapping (ORM) on Credit Risk Application 3

Optimizing Software Development through Data Access Speed us...

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3rd International Conference on Smart Cities, Automation and Intelligent Computing systems, ICON-SONICS 2023

作者： Sierra, Evelyn Yuhana, Umi Lali Informatics Engineering Sepuluh Nopember Institute of Technology Surabaya Indonesia

ISBN: (纸本)9781509062805

This study presents an examination of the implications of integrating object-Relational Mapping (ORM) in credit risk software development. ORM is a software layer that allows developers to work with databases using object-oriented code and concepts, rather than writing raw SQL queries. It provides a set of classes and methods that enable the creation, retrieval, update, and deletion of data in a database using familiar programming constructs like classes, objects, and methods. For a case study, we use credit risk software development with Indonesia macroeconomic data. Two distinct experiments were conducted to assess the advantages and trade-offs associated with ORM implementation, both during mid-project and at the project's inception. The findings reveal intriguing insights into the impact of ORM on code execution time, security, and code maintainability. The study concludes that the decision to implement ORM hinges on project-specific needs and the state of the database structure. While ORM may pose minor performance trade-offs, its long-term advantages in code quality, security, and scalability underscore its value. Thus, the timing of ORM integration should align with project objectives to strike a balance between performance optimization and code quality. © 2023 IEEE.

关键词： Software design

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