Mapping a hierarchy of entities to a hierarchy of DTOs using Orika

Question

Is it possible to map an object to its corrisponding DTO when both belonging to a class hierarchy?

For example: I have a BaseEntity and some ExtendedEntity1 .. ExtendedEntityN

On the other side I have a BaseDTO and some ExtendedDTO1 .. ExtendedDTON

Then I have a service method:

public BaseDTO getById(String id) {
    return orikaMapper.map(repository.findOne(id), BaseDTO.class);
}

This way I'am obviously getting always a BaseDTO, but I'd like to map the entity to the right DTO type...

Is there a way to achieve this? I wouldn't to use switch or instanceof-check workarounds...

This is an old question but you might want to check this [answer](https://stackoverflow.com/a/65225565/1505146) to a very similar question. The underlying issue is not tied to Orika or Spring or Mapstruct so I believe my comment is relevant. — Tasos P., Apr 10 '22 at 18:35

score 0 · Accepted Answer · answered May 18 '17 at 07:43

Not yet discovered a better solution (if one exists), so I'll go this way:

Map<Class<? extends BaseEntity>, Class<? extends BaseDTO>> dtoMappings;

I'm defining a mappings Map where I put all the associations between entities and DTOs. Then in my method:

public BaseDTO getById(String id) {
    BaseEntity e = repository.findOne(id);
    return orikaMapper.map(repository.findOne(id), dtoMappings.get(e.getClass()));
}

Mapping a hierarchy of entities to a hierarchy of DTOs using Orika

1 Answers1