Mapstruct @Mapper's uses attribute not working

Question

I am facing an issue with one of my Mapstruct mappers not using another mapper with @Mapper(uses =

Our ValidationSupportNeedMapper maps from entities to DTOs. One ValidationSupportNeedEntity contains an ActivityEntity property and I am trying to map from this property to an Activity DTO.

The issue is therefore with a nested object i.e. ActivityEntity to Activity.

Here is the source code:

From ValidationSupportNeedMapper.java:

@Mapper(uses = {LifecycleErrorMessagesMapper.class, ActivityMapper.class})
public interface ValidationSupportNeedMapper {

   ValidationSupportNeed toValidationSupportNeed(ValidationSupportNeedEntity source);

...

From ActivityMapper.java:

@Component
public class ActivityMapper {

    public Activity toActivity(ActivityEntity activity) {
       //Implementation
    }

    public ActivityEntity toActivityEntity(Activity activity) {
        //Implementation
    }

}

From ValidationSupportNeedEntity.java (Entity)

public class ValidationSupportNeedEntity {

    private ActivityEntity activityEntity;

From ValidationSupportNeed.java (DTO)

public class ValidationSupportNeed implements AutoValidated {
      private Activity validationActivity;

However Mapstruct seems to ignore the uses= attribute on the @Mapper annotation and goes ahead and generates its own mapping method as follows:

   @Override
    public ValidationSupportNeed toValidationSupportNeed(ValidationSupportNeedEntity source) {
        if ( source == null ) {
            return null;
        }

        ValidationSupportNeed validationSupportNeed = new ValidationSupportNeed();

        validationSupportNeed.setValidationActivity( validationSupportNeedEntityToActivity( source ) );
    ...
  }

    protected Activity validationSupportNeedEntityToActivity(ValidationSupportNeedEntity validationSupportNeedEntity) {
        if ( validationSupportNeedEntity == null ) {
            return null;
        }

        Activity activity = new Activity();

        activity.setCode( validationSupportNeedEntity.getValidationActivityCode() );

        return activity;
    }

What am I missing? Can someone please help?

edit: ActivityMapper is not autowired into the ValidationSupportNeedMapper implementation.

Answer 1

Adding a mapping annotation sorted the issue:

@Mapping(source = "activityEntity", target = "validationActivity")
ValidationSupportNeed toValidationSupportNeed(ValidationSupportNeedEntity source);

Notice the names of the attributes are different.