Connection Repository

Connection repository integrates with the spring data repository. This enables your application to lookup based on either the destiny or the originating DataEntry.

Definition

@Repository
public interface AuthoredConnectionRepository 
  extends NDBConnRepository<AuthoredConnection, String, BookDE, AuthorDE>{
  
}

This Repository definition contains not only the Connection (AuthoredConnection) but also the originating DataEntry (AuthorDE) and the destination DataEntry (BookDE).

Usage

@RestController
public class AnimeController{

  @Autowired
  AuthorDataRepository authorRepository;
  
  @Autowired
  AuthoredConnectionRepository authoredConnectionRepository;

  @GetMapping("/authored/{name}")
  public Set<AuthoredConnection> getByName(@PathVariable String name){
    Optional<AuthorDE> byName = authorRepository.findByName(id);
    if(byName.isPresent()){
      return authoredConnectionRepository.getByFrom(byName.get());
    }
    return null;
  }
  @DeleteMapping("/authored/{name}")
  public void deleteByName(@PathVariable String name){
    Optional<AuthorDE> byName = authorRepository.findByName(id);
    if(byName.isPresent()){
      authoredConnectionRepository.getByFrom(byName.get()).foreach(authored->authoredConnectionRepository.delete(authored));
    }
    return null;
  }
  @UpdateMapping("/authored/{name}/{country}")
  public void updateCountryByName(@PathVariable String name, @PathVariable String country){
    Optional<AuthorDE> byName = authorRepository.findByName(id);
    if(byName.isPresent()){
      authoredConnectionRepository.getByFrom(byName.get()).foreach(authored->{
        authored.setCountry(country);
        authoredConnectionRepository.save(authored);
      });
    }
    return null;
  }
}