Author Service

me.namila.RestSpringTest.Service.AuthorServiceImp.java

@SuppressWarnings("unchecked")
@Service
@NoArgsConstructor
public class AuthorServiceImp extends AuthorService
{

	@Autowired
	private AuthorRepository authorRepository;

	@Override
	public Page<Author> getAll( Pageable pageable )
	{
		return authorRepository.findAll( pageable );
	}

	@Override
	public Author add( Author o )
	{
		return authorRepository.save( o );
	}

	@Override
	public Author update( Author o, int id )
	{
		Author author = checkIfIdIsPresentandReturnAuthor( id );
		author.setName( o.getName() );
		author.setAddress( o.getAddress() );
		return authorRepository.save( author );
	}

	@Override
	public Author getById( int id )
	{
		return checkIfIdIsPresentandReturnAuthor( id );
	}

	@Override
	public Author deleteById( int id )
	{
		Author author = checkIfIdIsPresentandReturnAuthor( id );
		authorRepository.deleteById( id );
		return author;
	}

	@Override
	public List<Book> getBooksById( int id )
	{
		return checkIfIdIsPresentandReturnAuthor( id ).getBookList();
	}

	private Author checkIfIdIsPresentandReturnAuthor( int id )
	{
		if ( !authorRepository.findById( id ).isPresent() )
			throw new ResourceNotFoundException( " Author id = " + id + " not found" );
		else
			return authorRepository.findById( id ).get();
	}
}