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);

In traditional layered architecture: Web → Service → Repository → Database designing hexagonal architecture with java pdf

Driving Adapter (REST) → Incoming Port (Interface) → Application Service → Outgoing Port (Interface) ← Driven Adapter (JPA) // application/port/in/CreateProductUseCase

@SpringBootTest @Testcontainers class JpaProductRepositoryTest @Container static PostgreSQLContainer<?> postgres = new PostgreSQLContainer<>("postgres:15"); @Test void shouldSaveAndRetrieve() // ... real database test postgres = new PostgreSQLContainer&lt