Documenting a Generic Resource Service
This document describes the purpose and structure of a generic service used within a NestJS application for managing resources.
Purpose:
- Provides an abstraction layer between controllers and the database for CRUD operations (Create, Read, Update, Delete) and other resource-specific actions.
- Encapsulates business logic related to the resource, including data validation, transformation, and persistence.
- Promotes separation of concerns and code reusability.
Key Elements:
- Injectable Decorator:
@Injectable()marks the class as a service injectable into controllers and other services. - Repository Injection: Injected with the repository class responsible for data access and persistence operations.
- Methods:
- CRUD methods (get, create, update, delete) defined for managing resource data.
- May implement pagination, search, filtering, and sorting functionalities.
- Often perform data validation and transformation before interacting with the repository.
- Should handle and throw appropriate exceptions for errors.
- Additional Methods:
- Specific to the resource and its use cases, but not limited to CRUD operations.
- May involve complex business logic or interactions with other services.
Benefits:
- Improves code organization and maintainability by centralizing resource logic.
- Simplifies controller implementation by providing a well-defined service interface.
- Promotes data integrity and consistency through validation and repository operations.
Additional Notes:
- The specific resource name, service methods, and functionalities will vary depending on the actual resource type and application requirements.
- Consider error handling mechanisms for unexpected database errors or validation failures.
- This is a generic overview, and you might need to adjust it to reflect the specific details and methods present in your service.