Domain Modelling

When developing services with complex business logic, the Domain Driven Design (DDD) approach aims to support to manage upcoming use cases. The approach contains a collection of rules and guidelines in order to model large and complex systems. The modelling refers to the representation of a real-world situation in which it is possible to visualize relationships and actions between different substances. Thus, making the ideation process and, later, the implementation process less painful and more organized by avoiding errors and misunderstandings.

The Domain Modelling Extension in IBM Industry Solutions Workbench offers rich support for modelling business domains based on the DDD principles. It comes with various modelling capabilities in the Solution Designer UI, along with support during the implementation of the actual business logic, by providing auto-generated code artefacts.

The extension is available for the following stacks:

• Java Spring Boot Stack 2.0.0 and later
• Java Spring Boot Stack 1.0.0 (only for Domain services and always enabled)
• NodeJS TypeScript Stack (only for Domain services and always enabled)

Modelling the business domains is organized in domain namespaces which group logical items together. Inside a domain namespace, there are capabilities to model entities, domain services, business errors and other items inspired by the Domain Driven Design approach. To learn more about modelling domain namespaces, please check Modelling Domains.

The implementation of the domain logic can be done comfortably after cloning the project. Depending on the modelled domain, various code artefacts are auto-generated. Using those, a smooth implementation of the domain logic, which is compliant with the modelled items, is ensured. To find out more about implementing domain services please check Java Spring Boot Implementation and NodeJS TypeScript Implementation.