public int updateCopy(Capstone.DTO.CopyDTO copy)
 {
     CopyDAO dao = new CopyDAO();
     return dao.updateCopy(copy);
 }
 public CopyDTO getCopyById(String barcode)
 {
     CopyDAO dao = new CopyDAO();
     return dao.getCopyById(barcode);
 }
 public int insertCopy(Capstone.DTO.CopyDTO copy)
 {
     CopyDAO dao = new CopyDAO();
     return dao.insertCopy(copy);
 }
 public int deleteCopy(Capstone.DTO.CopyDTO copy)
 {
     CopyDAO dao = new CopyDAO();
     return dao.deleteCopy(copy);
 }