Designing Hexagonal Architecture With Java Pdf ⚡ Tested & Working

Driving Adapter (REST) → Incoming Port (Interface) → Application Service → Outgoing Port (Interface) ← Driven Adapter (JPA)

private Product toDomain(ProductJpaEntity entity) ... designing hexagonal architecture with java pdf

// Note: ProductJpaEntity is a JPA-annotated class that the domain never sees. // bootstrap/Application.java @SpringBootApplication public class Application public static void main(String[] args) SpringApplication.run(Application.class, args); // Manual wiring if not using Spring's @Autowired on fields @Bean public CreateProductService createProductService(ProductRepository repo) return new CreateProductService(repo); Driving Adapter (REST) → Incoming Port (Interface) →

// application/port/in/CreateProductUseCase.java (Incoming Port) package com.example.application.port.in; import com.example.domain.model.Product; public interface CreateProductUseCase { Product execute(CreateProductCommand command); @Override public Optional&lt

@Override public Optional<Product> findById(String id) return jpaRepository.findById(id).map(this::toDomain);

public interface ProductRepository Optional<Product> findById(String id); void save(Product product);