Spring boot - To execute statement sql update (JPA) - spring

Question

I just have started with Spring Boot and I am practicing in base to this example:
http://www.devglan.com/spring-boot/spring-boot-angular-example
The physical deleted is working ok, but I am trying to do a logical deleted and I do not know how to do it.
This is my classes:
UserController
#DeleteMapping(path ={"logical/{id}"})
public User deleteLogical(#PathVariable("id") int id, #RequestBody User user) {
return userService.deleteLogical(id, user);
}
UserService
User deleteLogical(int id, User user);
UserServiceImpl
#Override
// #Query("update user set remove = false where id = ?1")
public User deleteLogical(int id, User user) {
// user.setRemove(false);
return repository.save(user);
}
UserRepository
User save(User user);
This is the SQL statement I want to execute:
UPDATE user SET remove = false WHERE id =?;
How I could do it? Thanks,

Answer 1

I think you dont need to pass User object. Id will be enough.
So your code will be changed
#DeleteMapping(path ={"logical/{id}"})
public User deleteLogical(#PathVariable("id") int id) {
return userService.deleteLogical(id, user);
}
UserService
User deleteLogical(int id);
UserServiceImpl
#Override
public User deleteLogical(int id) {
User user = repository.findById(id);
user.setRemove(true);
return repository.save(user);
}
That's all.

Answer 2

You try to implement "soft delete" so you can try this approach:
User entity:
#Entity
User {
#Id
#GeneratedValue
private Integer id;
//...
private boolean removed; // user is removed if this property is true
//...
}
User service:
public interface UserService {
Optional<Integer> softDelete(int id);
}
#Service
public UserServiceImpl implements UserService (
// Injecting UserRepo
// First variant - read the user, set it removed, then updated it.
#Transactional
Optional<Integer> softDelete1(int id) {
// Using method findById from Spring Boot 2+, for SB1.5+ - use method findOne
return userRepo.findById(id).map(user -> {
user.setRemoved(true);
userRepo.save(user);
return 1;
});
}
// Second variant - update the user directly
#Transactional
Optional<Integer> softDelete2(int id) {
return userRepo.softDelete(id);
}
}
User controller:
#RestController
#RequestMapping("/users")
public class UserController {
// Injecting UserService
#DeleteMapping("/{id}")
public ResponseEntity<?> softDelete(#PathVariable("id") int id) {
return userService.softDelete1(id) // you can use 1 or 2 variants
.map(i -> ResponseEntity.noContent().build()) // on success
.orElse(ResponseEntity.notFound().build()); // if user not found
}
}
User repo:
public interface UserRepo extends JpaRepository<User, Integer>() {
#Modifying(clearAutomatically = true)
#Query("update User u set u.removed = true where u.id = ?1")
int remove(int id);
default Optional<Integer> softDelete(int id) {
return (remove(id) > 0) ? Optional.of(1) : Optional.empty();
}
}
UPDATED
Or, I think, you can just try to simply override the deleteById method of CrudRepository (not tested - please give a feedback):
#Override
#Modifying(clearAutomatically = true)
#Query("update User u set u.removed = true where u.id = ?1")
void deleteById(Integer id);
then use it in your service.