public int updateAuthor(Capstone.DTO.AuthorDTO author)
 {
     AuthorDAO dao = new AuthorDAO();
     return dao.updateAuthor(author);
 }
 public AuthorDTO getAuthorById(int authorId)
 {
     AuthorDAO dao = new AuthorDAO();
     return dao.getAuthorById(authorId);
 }
 public int insertAuthor(AuthorDTO author)
 {
     AuthorDAO dao = new AuthorDAO();
     return dao.insertAuthor(author);
 }
 public int deleteAuthor(AuthorDTO author)
 {
     AuthorDAO dao = new AuthorDAO();
     return dao.deleteAuthor(author);
 }