code: public IdempotentPo getIdempotentPo(EasyTransFilterChain filterChain, Map<String,Object> header, EasyTransRequest<?, ?> reqest){
  		BusinessIdentifer businessType = ReflectUtil.getBusinessIdentifer(reqest.getClass());
  		Object trxIdObj = header.get(EasytransConstant.CallHeadKeys.PARENT_TRX_ID_KEY);
  		TransactionId transactionId = (TransactionId) trxIdObj;
  		Integer callSeq = Integer.parseInt(header.get(EasytransConstant.CallHeadKeys.CALL_SEQ).toString());
  		JdbcTemplate jdbcTemplate = getJdbcTemplate(filterChain, reqest);
  		 List<IdempotentPo> listQuery = jdbcTemplate.query(
  				selectSql, 
  				new Object[]{
  						stringCodecer.findId(APP_ID, transactionId.getAppId()),
  						stringCodecer.findId(BUSINESS_CODE,transactionId.getBusCode()),
  						transactionId.getTrxId(),
  						stringCodecer.findId(APP_ID, businessType.appId()),
  						stringCodecer.findId(BUSINESS_CODE,businessType.busCode()),
  						callSeq,
  						stringCodecer.findId(APP_ID,appId)},
  				beanPropertyRowMapper
  				);
  		 
  		 if(listQuery.size() == 1){
  			 return listQuery.get(0);
  		 }else if (listQuery.size() == 0){
  			 return null;
  		 }else{
  			 throw new RuntimeException("Unkonw Error!" + listQuery);
  		 }
  	}
docs: get execute result from database
  @param filterChain
  @param reqest
  @return