How to inject service inside supplier. Repository is null - spring

Question

I created a factory pattern using supplier. That's ok and it worked fine. The path of the right service is OK, but inside the service that will calculate, the repositories are null. It seems is not being autowired.
I tried to autowire and annotate the classes with #Service and #Component and still not work.
#Service
public class Service {
public responseDTO calculate(Contract contract, Request request) {
Supplier<TypeFactory> type = TypeFactory::new;
//HOW TO AUTOWIRE THIS?
return type.get().getCalculationMethod(contract.getId()).calculate(request);
}
}
#Service
public class TypeFactory {
final static Map<Integer, Supplier<Calculator>> calculationTypeMap = new HashMap<>();
static {
calculationTypeMap.put(1, ContractOneType::new);
calculationTypeMap.put(2, ContractTwoType::new);
}
public Calculator getCalculationMethod(Integer type) {
Supplier<Calculator> method = calculationTypeMap.get(type);
if (method != null) {
return method.get();
}
throw new IllegalStateException("Type not found");
}
}
#Service
public interface Calculator {
ResponseDTO calculate(Request Request);
}
#Service
public class ContractOneType implements Calculator {
#Autowired
private ContractRepository contractRepository;
public ResponseDTO calculate(Request request) {
ResponseDTO responseDTO = new ResponseDTO();
Contract contract = contractRepository.findById(request.getId()).orElseThrow(() -> new NotFoundException("id not found"));
//some calculations here with the contract
return responseDTO;
}
}
The contractRepository is null, is not being autowired. It must be.
Error messages from my code:
2019-07-08 10:19:33.078 ERROR
[-,21fa294c89e1e207,21fa294c89e1e207,false] 19477 ---
[nio-8080-exec-1] c.l.d.t.s.h.GeneralExceptionHandler :
msg="Exception", stacktrace="java.lang.NullPointerException

Answer 1

I found a solution changing my supplier that is creating new instances, I just create instances for my implementations and set #Autowired for them.
And that's why my repository is not being #Autowired.
Here's my code:
#Service
public class TypeFactory {
final static Map<Integer, Supplier<Calculator>> calculationTypeMap = new HashMap<>();
#Autowired
ContractOneType contractOneType;
#Autowired
ContractTwoType contractTwoType;
static {
calculationTypeMap.put(1, contractOneType);
calculationTypeMap.put(2, contractTwoType);
}
public Calculator getCalculationMethod(Integer type) {
Supplier<Calculator> method = calculationTypeMap.get(type);
if (method != null) {
return method.get();
}
throw new IllegalStateException("Type not found");
}
}
#Component
public class ContractOneType implements Calculator {
#Autowired
private ContractRepository contractRepository;
public ResponseDTO calculate(Request request) {
ResponseDTO responseDTO = new ResponseDTO();
Contract contract = contractRepository.findById(request.getId()).orElseThrow(() -> new NotFoundException("id not found"));
//some calculations here with the contract
return responseDTO;
}
}
public interface Calculator {
ResponseDTO calculate(Request Request);
}