@Override
 public void updateBook(BookModel bookModel) {
   create
       .update(BOOK)
       .set(BOOK.TITLE, bookModel.getTitle())
       .set(BOOK.DATE_PUBLISH, bookModel.getDatePublish())
       .set(BOOK.SHORT_DESCRIPTION, bookModel.getShortDescription())
       .where(BOOK.ID_BOOK.equal(bookModel.getIdBook()))
       .execute();
   List<Integer> existsAuthors =
       create
           .select(AUTHOR_BOOK.ID_AUTHOR)
           .from(AUTHOR_BOOK)
           .where(AUTHOR_BOOK.ID_BOOK.equal(bookModel.getIdBook()))
           .fetchInto(Integer.class);
   logger.debug("Existing authors: " + existsAuthors);
   List<Integer> newAuthors = new ArrayList<>();
   List<Integer> authors = new ArrayList<>();
   /** */
   for (String idAuthor : bookModel.getAuthors()) {
     int id = Integer.valueOf(idAuthor);
     authors.add(id);
     if (!existsAuthors.contains(id)) {
       newAuthors.add(id);
     }
   }
   existsAuthors.removeAll(authors);
   logger.debug("New authors: " + newAuthors);
   if (!newAuthors.isEmpty()) {
     InsertValuesStep2<AuthorBookRecord, Integer, Integer> insertStep =
         create.insertInto(AUTHOR_BOOK, AUTHOR_BOOK.ID_AUTHOR, AUTHOR_BOOK.ID_BOOK);
     InsertValuesStep2<AuthorBookRecord, Integer, Integer> valuesStep = null;
     for (Integer idAuthor : newAuthors) {
       valuesStep = insertStep.values(idAuthor, bookModel.getIdBook());
     }
     valuesStep.execute();
   }
   logger.debug("Old authors: " + existsAuthors);
   if (!existsAuthors.isEmpty()) {
     create.delete(AUTHOR_BOOK).where(AUTHOR_BOOK.ID_AUTHOR.in(existsAuthors)).execute();
   }
 }