diff --git a/persistence-modules/spring-data-jpa-repo-3/src/main/java/com/baeldung/spring/data/jpa/naturalid/Application.java b/persistence-modules/spring-data-jpa-repo-3/src/main/java/com/baeldung/spring/data/jpa/naturalid/Application.java new file mode 100644 index 0000000000..aec711d0d1 --- /dev/null +++ b/persistence-modules/spring-data-jpa-repo-3/src/main/java/com/baeldung/spring/data/jpa/naturalid/Application.java @@ -0,0 +1,14 @@ +package com.baeldung.spring.data.jpa.naturalid; + +import com.baeldung.spring.data.jpa.naturalid.repository.NaturalIdRepositoryImpl; +import org.springframework.boot.SpringApplication; +import org.springframework.boot.autoconfigure.SpringBootApplication; +import org.springframework.data.jpa.repository.config.EnableJpaRepositories; + +@SpringBootApplication +public class Application { + + public static void main(String[] args) { + SpringApplication.run(SpringBootApplication.class, args); + } +} \ No newline at end of file diff --git a/persistence-modules/spring-data-jpa-repo-3/src/main/java/com/baeldung/spring/data/jpa/naturalid/HotelRoomsService.java b/persistence-modules/spring-data-jpa-repo-3/src/main/java/com/baeldung/spring/data/jpa/naturalid/HotelRoomsService.java new file mode 100644 index 0000000000..c4c9b4c2b6 --- /dev/null +++ b/persistence-modules/spring-data-jpa-repo-3/src/main/java/com/baeldung/spring/data/jpa/naturalid/HotelRoomsService.java @@ -0,0 +1,35 @@ +package com.baeldung.spring.data.jpa.naturalid; + +import com.baeldung.spring.data.jpa.naturalid.entity.ConferenceRoom; +import com.baeldung.spring.data.jpa.naturalid.entity.GuestRoom; +import jakarta.persistence.EntityManager; +import jakarta.persistence.EntityManagerFactory; +import org.hibernate.Session; +import org.springframework.stereotype.Service; + +import java.util.Optional; + +@Service +public class HotelRoomsService { + + private final EntityManager entityManager; + + public HotelRoomsService(EntityManagerFactory entityManagerFactory) { + this.entityManager = entityManagerFactory.createEntityManager(); + } + + public Optional conferenceRoom(String name) { + Session session = entityManager.unwrap(Session.class); + return session.bySimpleNaturalId(ConferenceRoom.class) + .loadOptional(name); + } + + public Optional guestRoom(int roomNumber, int floor) { + Session session = entityManager.unwrap(Session.class); + return session.byNaturalId(GuestRoom.class) + .using("roomNumber", roomNumber) + .using("floor", floor) + .loadOptional(); + } + +} diff --git a/persistence-modules/spring-data-jpa-repo-3/src/main/java/com/baeldung/spring/data/jpa/naturalid/NaturalIdRepoConfig.java b/persistence-modules/spring-data-jpa-repo-3/src/main/java/com/baeldung/spring/data/jpa/naturalid/NaturalIdRepoConfig.java new file mode 100644 index 0000000000..1461d01a46 --- /dev/null +++ b/persistence-modules/spring-data-jpa-repo-3/src/main/java/com/baeldung/spring/data/jpa/naturalid/NaturalIdRepoConfig.java @@ -0,0 +1,10 @@ +package com.baeldung.spring.data.jpa.naturalid; + +import com.baeldung.spring.data.jpa.naturalid.repository.NaturalIdRepositoryImpl; +import org.springframework.context.annotation.Configuration; +import org.springframework.data.jpa.repository.config.EnableJpaRepositories; + +@Configuration +@EnableJpaRepositories(repositoryBaseClass = NaturalIdRepositoryImpl.class) +public class NaturalIdRepoConfig { +} diff --git a/persistence-modules/spring-data-jpa-repo-3/src/main/java/com/baeldung/spring/data/jpa/naturalid/entity/ConferenceRoom.java b/persistence-modules/spring-data-jpa-repo-3/src/main/java/com/baeldung/spring/data/jpa/naturalid/entity/ConferenceRoom.java new file mode 100644 index 0000000000..5f72993aa1 --- /dev/null +++ b/persistence-modules/spring-data-jpa-repo-3/src/main/java/com/baeldung/spring/data/jpa/naturalid/entity/ConferenceRoom.java @@ -0,0 +1,56 @@ +package com.baeldung.spring.data.jpa.naturalid.entity; + +import jakarta.persistence.Entity; +import jakarta.persistence.GeneratedValue; +import jakarta.persistence.GenerationType; +import jakarta.persistence.Id; +import org.hibernate.annotations.NaturalId; + +@Entity +public class ConferenceRoom { + @Id + @GeneratedValue(strategy = GenerationType.IDENTITY) + private Long id; + + @NaturalId(mutable = true) + private String name; + + private int capacity; + + public ConferenceRoom(String name, int capacity) { + this.name = name; + this.capacity = capacity; + } + + protected ConferenceRoom() { + } + + public Long getId() { + return id; + } + + public void setId(Long id) { + this.id = id; + } + + public String getName() { + return name; + } + + public int getCapacity() { + return capacity; + } + + public void setCapacity(int capacity) { + this.capacity = capacity; + } + + @Override + public String toString() { + return "HotelRoom{" + + "id=" + id + + ", name='" + name + '\'' + + ", capacity=" + capacity + + '}'; + } +} diff --git a/persistence-modules/spring-data-jpa-repo-3/src/main/java/com/baeldung/spring/data/jpa/naturalid/entity/GuestRoom.java b/persistence-modules/spring-data-jpa-repo-3/src/main/java/com/baeldung/spring/data/jpa/naturalid/entity/GuestRoom.java new file mode 100644 index 0000000000..e6ec6bb3dc --- /dev/null +++ b/persistence-modules/spring-data-jpa-repo-3/src/main/java/com/baeldung/spring/data/jpa/naturalid/entity/GuestRoom.java @@ -0,0 +1,73 @@ +package com.baeldung.spring.data.jpa.naturalid.entity; + +import jakarta.persistence.Entity; +import jakarta.persistence.GeneratedValue; +import jakarta.persistence.GenerationType; +import jakarta.persistence.Id; +import org.hibernate.annotations.NaturalId; + +@Entity +public class GuestRoom { + @Id + @GeneratedValue(strategy = GenerationType.IDENTITY) + private Long id; + + @NaturalId + private Integer roomNumber; + + @NaturalId + private Integer floor; + + private String name; + private int capacity; + + + public GuestRoom(int roomNumber, int floor, String name, int capacity) { + this.roomNumber = roomNumber; + this.floor = floor; + this.name = name; + this.capacity = capacity; + } + + protected GuestRoom() { + } + + public Long getId() { + return id; + } + + public Integer getRoomNumber() { + return roomNumber; + } + + public Integer getFloor() { + return floor; + } + + public int getCapacity() { + return capacity; + } + + public void setCapacity(int capacity) { + this.capacity = capacity; + } + + public String getName() { + return name; + } + + public void setName(String name) { + this.name = name; + } + + @Override + public String toString() { + return "GuestRoom{" + + "id=" + id + + ", roomNumber=" + roomNumber + + ", floor=" + floor + + ", name=" + name + + ", capacity=" + capacity + + '}'; + } +} diff --git a/persistence-modules/spring-data-jpa-repo-3/src/main/java/com/baeldung/spring/data/jpa/naturalid/repository/ConferenceRoomJpaRepo.java b/persistence-modules/spring-data-jpa-repo-3/src/main/java/com/baeldung/spring/data/jpa/naturalid/repository/ConferenceRoomJpaRepo.java new file mode 100644 index 0000000000..0f6d2a4b18 --- /dev/null +++ b/persistence-modules/spring-data-jpa-repo-3/src/main/java/com/baeldung/spring/data/jpa/naturalid/repository/ConferenceRoomJpaRepo.java @@ -0,0 +1,9 @@ +package com.baeldung.spring.data.jpa.naturalid.repository; + +import com.baeldung.spring.data.jpa.naturalid.entity.ConferenceRoom; +import org.springframework.data.jpa.repository.JpaRepository; +import org.springframework.stereotype.Repository; + +@Repository +public interface ConferenceRoomJpaRepo extends JpaRepository { +} diff --git a/persistence-modules/spring-data-jpa-repo-3/src/main/java/com/baeldung/spring/data/jpa/naturalid/repository/ConferenceRoomRepository.java b/persistence-modules/spring-data-jpa-repo-3/src/main/java/com/baeldung/spring/data/jpa/naturalid/repository/ConferenceRoomRepository.java new file mode 100644 index 0000000000..5d98ca930a --- /dev/null +++ b/persistence-modules/spring-data-jpa-repo-3/src/main/java/com/baeldung/spring/data/jpa/naturalid/repository/ConferenceRoomRepository.java @@ -0,0 +1,8 @@ +package com.baeldung.spring.data.jpa.naturalid.repository; + +import com.baeldung.spring.data.jpa.naturalid.entity.ConferenceRoom; +import org.springframework.stereotype.Repository; + +@Repository +public interface ConferenceRoomRepository extends NaturalIdRepository { +} diff --git a/persistence-modules/spring-data-jpa-repo-3/src/main/java/com/baeldung/spring/data/jpa/naturalid/repository/GuestRoomJpaRepo.java b/persistence-modules/spring-data-jpa-repo-3/src/main/java/com/baeldung/spring/data/jpa/naturalid/repository/GuestRoomJpaRepo.java new file mode 100644 index 0000000000..4caf327d76 --- /dev/null +++ b/persistence-modules/spring-data-jpa-repo-3/src/main/java/com/baeldung/spring/data/jpa/naturalid/repository/GuestRoomJpaRepo.java @@ -0,0 +1,9 @@ +package com.baeldung.spring.data.jpa.naturalid.repository; + +import com.baeldung.spring.data.jpa.naturalid.entity.GuestRoom; +import org.springframework.data.jpa.repository.JpaRepository; +import org.springframework.stereotype.Repository; + +@Repository +public interface GuestRoomJpaRepo extends JpaRepository { +} diff --git a/persistence-modules/spring-data-jpa-repo-3/src/main/java/com/baeldung/spring/data/jpa/naturalid/repository/NaturalIdRepository.java b/persistence-modules/spring-data-jpa-repo-3/src/main/java/com/baeldung/spring/data/jpa/naturalid/repository/NaturalIdRepository.java new file mode 100644 index 0000000000..36a71f4ffa --- /dev/null +++ b/persistence-modules/spring-data-jpa-repo-3/src/main/java/com/baeldung/spring/data/jpa/naturalid/repository/NaturalIdRepository.java @@ -0,0 +1,11 @@ +package com.baeldung.spring.data.jpa.naturalid.repository; + +import org.springframework.data.jpa.repository.JpaRepository; +import org.springframework.data.repository.NoRepositoryBean; + +import java.util.Optional; + +@NoRepositoryBean +public interface NaturalIdRepository extends JpaRepository { + Optional naturalId(ID naturalId); +} diff --git a/persistence-modules/spring-data-jpa-repo-3/src/main/java/com/baeldung/spring/data/jpa/naturalid/repository/NaturalIdRepositoryImpl.java b/persistence-modules/spring-data-jpa-repo-3/src/main/java/com/baeldung/spring/data/jpa/naturalid/repository/NaturalIdRepositoryImpl.java new file mode 100644 index 0000000000..8442237ab1 --- /dev/null +++ b/persistence-modules/spring-data-jpa-repo-3/src/main/java/com/baeldung/spring/data/jpa/naturalid/repository/NaturalIdRepositoryImpl.java @@ -0,0 +1,28 @@ +package com.baeldung.spring.data.jpa.naturalid.repository; + +import jakarta.persistence.EntityManager; +import org.hibernate.Session; +import org.springframework.data.jpa.repository.support.JpaEntityInformation; +import org.springframework.data.jpa.repository.support.SimpleJpaRepository; +import org.springframework.data.repository.NoRepositoryBean; +import org.springframework.transaction.annotation.Transactional; + +import java.io.Serializable; +import java.util.Optional; + +public class NaturalIdRepositoryImpl extends SimpleJpaRepository implements NaturalIdRepository { + private final EntityManager entityManager; + + public NaturalIdRepositoryImpl(JpaEntityInformation entityInformation, EntityManager entityManager) { + super(entityInformation, entityManager); + this.entityManager = entityManager; + } + + @Override + public Optional naturalId(ID naturalId) { + return entityManager.unwrap(Session.class) + .bySimpleNaturalId(this.getDomainClass()) + .loadOptional(naturalId); + } + +} \ No newline at end of file diff --git a/persistence-modules/spring-data-jpa-repo-3/src/main/resources/application.properties b/persistence-modules/spring-data-jpa-repo-3/src/main/resources/application.properties index 8b13789179..5a1841e2ad 100644 --- a/persistence-modules/spring-data-jpa-repo-3/src/main/resources/application.properties +++ b/persistence-modules/spring-data-jpa-repo-3/src/main/resources/application.properties @@ -1 +1,2 @@ - +logging.level.org.hibernate.SQL=DEBUG +logging.level.org.hibernate.type.descriptor.sql.BasicBinder=TRACE diff --git a/persistence-modules/spring-data-jpa-repo-3/src/test/java/com/baeldung/spring/data/jpa/naturalid/NaturalIdIntegrationTest.java b/persistence-modules/spring-data-jpa-repo-3/src/test/java/com/baeldung/spring/data/jpa/naturalid/NaturalIdIntegrationTest.java new file mode 100644 index 0000000000..d9f0c68a51 --- /dev/null +++ b/persistence-modules/spring-data-jpa-repo-3/src/test/java/com/baeldung/spring/data/jpa/naturalid/NaturalIdIntegrationTest.java @@ -0,0 +1,61 @@ +package com.baeldung.spring.data.jpa.naturalid; + +import com.baeldung.spring.data.jpa.naturalid.entity.ConferenceRoom; +import com.baeldung.spring.data.jpa.naturalid.entity.GuestRoom; +import com.baeldung.spring.data.jpa.naturalid.repository.ConferenceRoomJpaRepo; +import com.baeldung.spring.data.jpa.naturalid.repository.ConferenceRoomRepository; +import com.baeldung.spring.data.jpa.naturalid.repository.GuestRoomJpaRepo; +import jakarta.transaction.Transactional; +import org.junit.jupiter.api.Test; +import org.springframework.beans.factory.annotation.Autowired; +import org.springframework.boot.test.context.SpringBootTest; +import org.springframework.test.annotation.Rollback; + +import java.util.Optional; + +import static org.assertj.core.api.Assertions.assertThat; + +@SpringBootTest +class NaturalIdIntegrationTest { + + @Autowired + private HotelRoomsService service; + + @Autowired + private GuestRoomJpaRepo guestRoomJpaRepo; + @Autowired + private ConferenceRoomJpaRepo conferenceRoomJpaRepo; + + @Autowired + private ConferenceRoomRepository conferenceRoomRepository; + + @Test + void whenWeFindByNaturalKey_thenEntityIsReturnedCorrectly() { + guestRoomJpaRepo.save(new GuestRoom(23, 3, "B-423", 4)); + + Optional result = service.guestRoom(23, 3); + + assertThat(result).isPresent() + .hasValueSatisfying(room -> "B-423".equals(room.getName())); + } + + @Test + void whenWeFindBySimpleNaturalKey_thenEntityIsReturnedCorrectly() { + conferenceRoomJpaRepo.save(new ConferenceRoom("Colorado", 100)); + + Optional result = service.conferenceRoom("Colorado"); + + assertThat(result).isPresent() + .hasValueSatisfying(room -> "Colorado".equals(room.getName())); + } + + @Test + void givenNaturalIdRepo_whenWeFindBySimpleNaturalKey_thenEntityIsReturnedCorrectly() { + conferenceRoomJpaRepo.save(new ConferenceRoom("Nevada", 200)); + + Optional result = conferenceRoomRepository.naturalId("Nevada"); + + assertThat(result).isPresent() + .hasValueSatisfying(room -> "Nevada".equals(room.getName())); + } +} \ No newline at end of file