I would like to do mapping of nested object that needs value from the parent object. I could use solution mentioned here mapstruct - Propagate parent field value to collection of nested objects - either directly after mapping to set some value to the child object or to use context. But in my case I work with immutable objects.
example:
data class Worker(
val name: String,
val businessCard: BusinessCard? = null,
)
data class BusinessCard(
val companyName: String,
)
data class WorkerDto(
val name: String,
val businessCard: BusinessCardDto? = null,
)
data class BusinessCardDto(
val text: String, // "worker name | company name"
)
Is there a way how to directly map value without @AfterMapping modifications?
Something like this?
@Mapper(config = CustomMappingConfig::class, uses = [ComputerMapper::class])
abstract class WorkerMapper {
@Mapping(target = "businessCard.text", expression = "java(mapBcText(worker))")
abstract fun mapWorker(worker: Worker): WorkerDto
protected fun mapBcText(worker: Worker) = "${worker.name} | ${worker.businessCard?.companyName}"
}
But sadly the code above generates:
@Override
public WorkerDto mapWorker(Worker worker) {
if ( worker == null ) {
return null;
}
String name = null;
BusinessCardDto businessCard = null;
name = worker.getName();
businessCard = businessCardToBusinessCardDto( worker.getBusinessCard() );
WorkerDto workerDto = new WorkerDto( name, businessCard );
return workerDto;
}
protected BusinessCardDto businessCardToBusinessCardDto(BusinessCard businessCard) {
if ( businessCard == null ) {
return null;
}
BusinessCardDto businessCardDto = new BusinessCardDto();
businessCardDto.setText( mapBcText(worker) ); // WORKER IS NOT ACCESSIBLE HERE
return businessCardDto;
}
Does anybody have an idea how to achieve this mapping?
...I also tried to create custom BusinessCard mapper, but then I cannot access the parent data (Worker) in it then...
