code: @Override
      public Object getObject(int columnIndex) throws SQLException {
          checkColumnBounds(columnIndex);
          try {
              VoltType type = table.getColumnType(columnIndex - 1);
              if (type == VoltType.TIMESTAMP)
                  return getTimestamp(columnIndex);
              else
                  return table.get(columnIndex - 1, type);
          } catch (Exception x) {
              throw SQLError.get(x);
          }
      }
docs: ResultSet object as an Object in the Java programming language.