ISSN 1997-7670 (Print)
ISSN 2541-8785 (Online)

List of issues > Series «Mathematics». 2022. Vol 42

Object Models as Microservices: a Query Language

Denis N. Gavrilin1, Irina A. Kustova2, Andrei V. Mantsivoda1

1Irkutsk State University, Irkutsk, Russian Federation

2Logus Ltd., Irkutsk, Russian Federation

We are designing an application development technology based on an extended object-oriented approach, in which object models are enriched to the functionality of microservices. This variation is called microservice object-oriented programming. An object model as a microservice is an autonomous information system that behaves as a persistent storage and interacts with other models and external actors through the API. Moreover, understanding object models as microservices provides a fundamentally new low-code technology based on model visualization.

This paper presents a query language for object models that works efficiently with persistent models. It is a subset of the Libretto language. The logical semantics of the language is described, as well as the method of compiling it into SQL, based on the use of an intermediate relational language. A SQL query language compiler has been implemented within the Ontobox platform. It shows high efficiency and is now actively used in real-life application development tasks solving.

About the Authors

Denis N. Gavrilin, Postgraduate, Irkutsk State University, Irkutsk, 664003, Russian Federation

Irina A. Kustova, Principal Developer, Logus Ltd., Irkutsk, 664003, Russian Federation

Andrei V. Mantsivoda, Dr. Sci. (Phys.Math.), Prof., Irkutsk State University, Irkutsk, 664003, Russian Federation

For citation
Gavrilin D. N., Kustova I. A., Mantsivoda A. V. Object Models as Microservices: a Query Language. The Bulletin of Irkutsk State University. Series Mathematics, 2022, vol. 42, pp. 121–137. (in Russian) https://doi.org/10.26516/1997-7670.2022.42.121
low-code, microservice object-oriented programming, query language, Ontobox
68U35, 68N15
  1. Gavrilina D.E., Mantsivoda A.V. Low-code and Object Spreadsheats. The Bulletin of Irkutsk State University. Series Mathematics, 2022. vol. 40, pp. 93–103.(in Russian) https://doi.org/10.26516/1997-7670. 2022.40.93
  2. Malykh A.A., Mantsivoda A.V. Document Models. The Bulletin of Irkutsk State University. Series Mathematics, 2017, vol. 21, pp. 89–107. (in Russian) https://doi.org/10.26516/1997-7670.2017.21.89
  3. Arul S. IT Professionals and DevOps Say No to Low-Code. AIM, January, 2022. Available at: https://analyticsindiamag.com/it-professionals-and-devops-say-noto-low-code/ (accessed 1 April 2022).
  4. Business Process Model and Notation (BPMN). Version 2.0. Available at: https://www.omg.org/spec/BPMN/2.0/PDF (accessed 1 April 2022).
  5. Gartner Review: Magic Quadrant for Enterprise Low-Code Application Platforms. 20 Sep 2021. Available at: https://www.gartner.com/doc/reprints?id=1-27I04ZJT&ct=210921&st=sb (accessed 1 April 2022).
  6. Malykh A., Mantsivoda A. Query Language for Logic Architectures. Proceedings of 7th International Conference ’Perspectives of System Informatics’, SpringerVerlag, Lecture Notes in Computer Science 5947, 2010, pp. 294–305.
  7. Mantsivoda A.V., Ponomaryov D.K. Towards Semantic Document Modelling of Business Processes. The Bulletin of Irkutsk state university. Series Mathematics,2019, vol. 29, pp. 52–67. https://doi.org/10.26516/1997-7670.2019.29.52
  8. Martin J., Gupta S., Kumar A. Scaling with Low Code to Accelerate Digital Transformation. HFS Research & Infosys. Published November 2021. Available at: https://www.infosys.com/services/digital-process-automation/insights/scalinglow-code.html(accessed 1 April 2022).
  9. Wolff E. Microservices: Flexible Software Architecture. Addison-Wesley Professional, 2016, 432 p.
  10. Wayner P. Why Developers Hate Low-Code. 9 Reasons Programmers Grow Frustrated with the Tools That are Supposed to Save Them Time // InfoWorld, Sep 16, 2019. Available at: https://www.infoworld.com/article/3438819/whydevelopers-hate-low-code.html (accessed 1 April 2022).

Full text (russian)