code: private void saveUndoLog(String groupId, String unitId, int sqlType, TableRecordList recordList) throws TxcLogicException {
          UndoLogDO undoLogDO = new UndoLogDO();
          undoLogDO.setRollbackInfo(SqlUtils.objectToBlob(recordList));
          undoLogDO.setUnitId(unitId);
          undoLogDO.setGroupId(groupId);
          undoLogDO.setSqlType(sqlType);
          try {
              txcLogHelper.saveUndoLog(undoLogDO);
          } catch (SQLException e) {
              throw new TxcLogicException(e);
          }
      }
docs: save sql undo log
  
  @param groupId    groupId
  @param unitId     unitId
  @param sqlType    sqlType
  @param recordList recordList
  @throws TxcLogicException 业务异常