Delphi SOLID Patterns

Implement SOLID design patterns in Delphi by defining clear interfaces for Repository, Service, Factory, and Strategy layers. This approach enforces constructor injection and clean architecture boundaries, resulting in scalable and maintainable domain and infrastructure separation.

Use dependency injection in Delphi by defining repository and service interfaces, then injecting implementations via constructors. This pattern decouples object creation from business logic, enabling testability and consistent architecture across application modules.

You need the Factory and Strategy patterns in Delphi when managing object creation and varying behavior dynamically. Defining these as interfaces with constructor injection ensures clean architecture rules and consistent behavior variation across modules.

Yes, you can apply clean architecture rules to Delphi by refactoring tangled code into Repository and Service interfaces with clear injection points. This promotes weak boundaries and enables consistent architecture, improving code reuse and testability.

The best way to structure Delphi layers is using SOLID patterns: implement data access via Repository interfaces and business logic via Service interfaces. Using constructor injection for these components ensures maintainability and testable code boundaries.