[SQL]Rowmapper to query SQL in JDBC

@Repository("DaoImpl")
public class DaoImpl implements IDao {

  private static Logger dbLogger = LoggerFactory.getLogger("DBDOWN_ALERTLOG");
  private static final Logger logger = LoggerFactory.getLogger(DaoImpl.class);
  
  @Autowired
  @Qualifier("jdbcTemplate")
  JdbcTemplate jdbcTemplate;
  
  @Override
  public list<UserMode> query() {
    try {
      logger.info("-----Start to query DB for all user's privilege------");
      List<UserMode> list = jdbcTemplate.query(Constant.Query, new RowMapper<UserMode>() {
        
          @Override
          public UserMode mapRow(ResultSet rs, int rowNum) throws SQLException {
            
              UserMode user = new UserMode();
                                                        String username = rs.getString(Constant.username);
              .....  
              
              user.setUsername(username);
            ....
            
            }
            
            logger.info("-----End to query DB for all user's privilege------");  
            return user;
          }
          
        });
        
        return list;
    }catch (DataAccessException e) {
      dbLogger.error("DB is down. Exception is [{}]", e.getMessage());
      throw e;
    } catch (Exception e) {
      logger.error("-- Error occur, exception is [{}]", e.getMessage());
      throw e;
    }
    
  }