example

src_main_java_mapstruct_ex_IvpVodDtoMapperService.java

package mapstruct.ex;

import org.mapstruct.*;

import java.util.List;
import java.util.Optional;
import java.util.Set;

@Mapper
public interface IvpVodDtoMapperService {

    @Mappings({
        @Mapping(source = "programInstance", target = "seasonNumber", qualifiedByName = "getSeasonNumber"),
        @Mapping(source = "programInstance", target = "episodeNumber", qualifiedByName = "getEpisodeNumber" )
    })
    IvpVodOfferStatusDTO macIvpVodOfferToIvpVodOfferUiDto(OnDemand offerStatusDTO);

    @Named("getTitle")
    default String mapTitle(Program programInstance) {
        return null;
    }

    @Named("getSeriesName")
    default String mapSeriesName(Program programInstance) {
        return null;
    }

    @Named("getSeasonNumber")
    default Integer mapSeasonNumber(Program programInstance) {
        return null;
    }

    @Named("getEpisodeNumber")
    default Integer mapEpisodeNumber(Program programInstance) {
        return null;
    }


}

src_main_java_mapstruct_ex_IvpVodOfferStatusDTO.java

package mapstruct.ex;

public class IvpVodOfferStatusDTO {

    private Integer seasonNumber;
    private Integer episodeNumber;

    public Integer getSeasonNumber() {
        return seasonNumber;
    }

    public void setSeasonNumber(Integer seasonNumber) {
        this.seasonNumber = seasonNumber;
    }

    public Integer getEpisodeNumber() {
        return episodeNumber;
    }

    public void setEpisodeNumber(Integer episodeNumber) {
        this.episodeNumber = episodeNumber;
    }
}

src_main_java_mapstruct_ex_OnDemand.java

package mapstruct.ex;

public class OnDemand {

    private Program programInstance;

    public Program getProgramInstance() {
        return programInstance;
    }

    public void setProgramInstance(Program programInstance) {
        this.programInstance = programInstance;
    }
}

src_main_java_mapstruct_ex_Program.java

package mapstruct.ex;

public class Program {
}

generated code:

package mapstruct.ex;

import javax.annotation.Generated;

@Generated(
    value = "org.mapstruct.ap.MappingProcessor",
    date = "2019-02-12T21:59:34+0100",
    comments = "version: 1.4.0-SNAPSHOT, compiler: javac, environment: Java 1.8.0_181 (Oracle Corporation)"
)
public class IvpVodDtoMapperServiceImpl implements IvpVodDtoMapperService {

    @Override
    public IvpVodOfferStatusDTO macIvpVodOfferToIvpVodOfferUiDto(OnDemand offerStatusDTO) {
        if ( offerStatusDTO == null ) {
            return null;
        }

        IvpVodOfferStatusDTO ivpVodOfferStatusDTO = new IvpVodOfferStatusDTO();

        ivpVodOfferStatusDTO.setEpisodeNumber( mapEpisodeNumber( offerStatusDTO.getProgramInstance() ) );
        ivpVodOfferStatusDTO.setSeasonNumber( mapSeasonNumber( offerStatusDTO.getProgramInstance() ) );

        return ivpVodOfferStatusDTO;
    }
}