The generic Repository facilitates the grouping of common database operations in the system. It is essential to have this structure.
Steps to follow:
- Create an Entity interface that will be used in the Repository.
- Define the basic operations (Create, Read, Update and Delete).
- Define other important operations (Count, Lirst, Last and others).
- For better organization, place it in a /shared or /common directory.
Procedure:
- The repository incorporates the Repository base via composition.
- The Repository constructor must initialize the BaseEntity.
- The Repository implements only the specific functions according to its purpose.
- The repository can override an existing method in the base.
Some Relationships:
- Entity and Entity Interface: Implementation or realization.
- Entity (Concrete) and BaseEntity: Composition.
- Repository and Base Repository: Composition.
- Repository and Entity: Dependency.
Advantages:
- Organization.
- Centralization of logic.
- Reuse of the repository.
- Scalability, making it easy to add or remove functions.
Source code:
- https://github.com/ortizdavid/golang-modular-software
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