Spring Data: can I create a method in the #Repository with a name what return list of object if String equals to constant? - spring

Question

Guess easier if I show you my example:
#Entity
class User {
Long id;
Status status;
}
enum Status {
NEW("N"), DELETED("D")
}
I have an AttributeConverter on Status so in DB the enum is stored with one character.
In my database I have entities like:
Table user
------------
Id Status
1 N
2 N
3 D
4 N
5 D
I want a method that list the Users with Status D. Something like this:
#Repository
public interface UserRepository extends JpaRepository<User, Long> {
List<User> findByStatusEqualsD();
or
List<User> findByStatusEqualsDeleted();
problem is these are not working
}
I could write this:
List<User> findByStatus(Status status);
And call it as repo.findByStatus(Status.DELETED) but I want a method what returns only the deleted users.
If I call it as repo.findByStatus(Status.NEW) then it will return the new users.
I prefer to not write a #Query, I hope it is possible what I'm asking without doing it...
Thanks in advance.

Answer 1

Such behavior is not supported.
Method name is translated into JPQL expression (which is the same as used in #Query) with parameters in it (if needed) so you have to provide these. (https://docs.spring.io/spring-data/jpa/docs/current/reference/html/#jpa.query-methods.query-creation)
If you want query parameters to be hardcoded - #Query is what you need.
Alternatively you can have default method in your repository calling the parametrized one as mentioned here JpaRepository with Enum: findAllByOfferState_ACTIVE. NoSuchElementException

Answer 2

Easy,
You don't need a repo for that. Create a Service instead:
public interface UserDAOService{
List<User> getAllDeletedUsers();
}
And then just implement it with hardcoded findByStatus method from repo:
#Service
public class UserDAOServiceImpl implements UserDAOService{
private final UserRepository userRepository;
public UserDAOServiceImpl(UserRepository userRepository) {
this.userRepository= userRepository;
}
#Override
public List<Author> getAllDeletedUsers();
return userRepository.findByStatus(Status.DELETED);
}