MapStruct

public class Car { private String make; private int numberOfSeats; private CarType type; //constructor, getters, setters etc. }	public class CarDto { private String make; private int seatCount; private String type; //constructor, getters, setters etc. }
@Mapper public interface CarMapper { CarMapper INSTANCE = Mappers.getMapper(CarMapper.class); @Mapping(source = "numberOfSeats", target = "seatCount") CarDto toDto(Car car); }
@Test public void shouldMapCarToDto() { Car car = new Car("Morris", 5, CarType.SEDAN); CarDto dto = CarMapper.INSTANCE.toDto(car); //then assertThat(dto).isNotNull(); assertThat(dto.getMake()).isEqualTo("Morris"); assertThat(dto.getSeatCount()).isEqualTo(5); assertThat(dto.getType()).isEqualTo("SEDAN"); }

Lombok Example

@Data public class LeadDto implements Serializable { private static final long serialVersionUID = -1L; private String id; private String code; private String fullName; private String mobileNo; private String email; }	@Data public class LeadVyo implements Serializable { private static final long serialVersionUID = -2L; private String id; private String createdDate; private String createdTime; private String code; private String fullName; private String mobileNo; private String email; }
@Data @Entity @EntityListeners(AuditTrailListener.class) public class Lead implements AuditTrail { private static final long serialVersionUID = -3L; @Id @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "sqn_lead") @GenericGenerator(name = "sqn_lead", strategy = "org.chorke.academia.utility.Base36Style", parameters = { @Parameter(name = Base36Style.INITIAL_VALUE, value = Base36Style.DIGIT_6_MIN), @Parameter(name = Base36Style.SEQUENCE_NAME, value = "sqn_lead"), @Parameter(name = Base36Style.ALLOCATION_SIZE, value = "1"), }) private String id; @Version private Long versionNo = 0L; private LocalDateTime createdOn; private String createdBy; private LocalDateTime updatedOn; private String updatedBy; private LocalDateTime deletedOn; private String code; private String fullName; private String mobileNo; private String email; }
@Mapper public interface LeadMapper { LeadMapper NEW = Mappers.getMapper(LeadMapper.class); LeadDto toDto(Lead e); default List<LeadDto> toDto(Collection<Lead> collection) { List<LeadDto> list = new ArrayList<>(); if (!CollectionUtils.isEmpty(collection)) collection.forEach(e -> list.add(toDto(e))); return list; } Lead toEnt(LeadDto d); default List<Lead> toEnt(Collection<LeadDto> collection) { List<Lead> list = new ArrayList<>(); if (!CollectionUtils.isEmpty(collection)) collection.forEach(d -> list.add(toEnt(d))); return list; } @Mappings({ @Mapping(target = "createdDate", source = "e.createdOn", dateFormat = "dd/MM/yyyy"), @Mapping(target = "createdTime", source = "e.createdOn", dateFormat = "HH:mm")}) LeadVyo toVyo(Lead e); default List<LeadVyo> toVyo(Collection<Lead> collection) { List<LeadVyo> list = new ArrayList<>(); if (!CollectionUtils.isEmpty(collection)) collection.forEach(e -> list.add(toVyo(e))); return list; } LeadVyo toVyo(LeadDto d); }

Maven Plugins

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-compiler-plugin</artifactId>
    <version>3.5.1</version>
    <configuration>
        <source>1.8</source>
        <target>1.8</target>
        <annotationProcessorPaths>
            <path>
                <groupId>org.mapstruct</groupId>
                <artifactId>mapstruct-processor</artifactId>
                <version>1.4.2.Final</version>
            </path>
            <path>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <version>1.18.4</version>
            </path>
            <path>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok-mapstruct-binding</artifactId>
                <version>0.2.0</version>
            </path>
        </annotationProcessorPaths>
    </configuration>
</plugin>

References

Mapping Collections with MapStruct Convention for Database Tables IntelliJ IDEA MapStruct Support Quick Guide to MapStruct Quarkus MapStruct MapStruct Liquibase Lombok Locale JPA

MapStruct Eclipse Plugin Lombok Plugins for IDE MapStruct IDE Support