Designing Hexagonal Architecture With Java Pdf !!install!! May 2026

// 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);

@Override public Product execute(CreateProductCommand command) var id = UUID.randomUUID().toString(); var money = new Money(command.price(), command.currency()); var product = new Product(id, command.name(), money); productRepository.save(product); return product; designing hexagonal architecture with java pdf

// 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); // Note: ProductJpaEntity is a JPA-annotated class that

// adapters/persistence/JpaProductRepository.java package com.example.adapters.persistence; import com.example.domain.model.Product; import com.example.domain.spi.ProductRepository; import lombok.RequiredArgsConstructor; import org.springframework.stereotype.Component; import java.util.Optional; @Component @RequiredArgsConstructor public class JpaProductRepository implements ProductRepository private final SpringDataJpaProductRepository jpaRepository; var money = new Money(command.price()