Legacy Patterns

Legacy Component — Patterns

Controller Pattern

Uses @RestController and @RequestMapping. Methods return DTOs mapped from entities.

@RestController
@RequestMapping("/api/resource")
public class ResourceController {
    private final ResourceService service;
    // ...
}

DTO Pattern

DTOs are typically used for data transfer, often with a Dto suffix.

public class ResourceDto {
    private String id;
    private String name;
    // getters and setters
}

Service Pattern

Business logic is encapsulated in @Service classes. Many services involve searching and code lookups.

@Service
public class ResourceService {
    private final ResourceRepository repository;
    // ...
}

Mapper Pattern

Uses MapStruct for converting between JPA entities and DTOs, located in the mappers package.