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嗨，我是 openbravo 初学者。我想知道 HQL 查询结果集中的返回对象。通常我可以返回列表或字符串。当我试图返回对象时，它的显示错误就像不能将对象转换为字符串。

我的对象是：ShipmentInOut

private ShipmentInOut getShipment(String documentNo) {
    String query = "select id from MaterialMgmtShipmentInOut where documentNo='" + documentNo
            + "' and salesTransaction='Y'";
        Query resultset = OBDal.getInstance().getSession().createQuery(query);

        List<ShipmentInOut> shpmntCritList = resultset.list();


        if (shpmntCritList != null && shpmntCritList.size() > 0) {
          return shpmntCritList.get(0);
        } else {
          throw new OBException("shipment " + documentNo + " not found");
        }
}

在上面的语句中，我遇到了异常，所以我决定进行条件查询，我编写了与上述 HQL 查询相等的条件查询，但不幸的是，如果条件第二部分返回 0 作为结果。但我不知道为什么我在同一种查询中得到不同的结果。上述 HQL 查询正确进入 if 条件。但问题是铸造。

 private ShipmentInOut getShipment(String documentNo) {

     log.info()
    OBCriteria<ShipmentInOut> shpmntCrit = OBDal.getInstance().createCriteria(ShipmentInOut.class);
    shpmntCrit.add(Restrictions.eq(ShipmentInOut.PROPERTY_DOCUMENTNO, documentNo));
    shpmntCrit.add(Restrictions.eq(ShipmentInOut.PROPERTY_SALESTRANSACTION, true));


    List<ShipmentInOut> shpmntCritList = shpmntCrit.list();
    if (shpmntCritList != null && shpmntCritList.size() > 0) {
      return shpmntCritList.get(0);
    } else {
      throw new OBException("shipment " + documentNo + " not found");
    }
  }

请任何人帮助我。我想实现上述任何一种方法。提前致谢

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2 回答 2

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非常感谢您的回答。最后我自己得到了解决方案

String query = "from MaterialMgmtShipmentInOut where documentNo='" + documentNo
        + "' and salesTransaction='Y'";
    Query resultset = OBDal.getInstance().getSession().createQuery(query);
    List<ShipmentInOut> resultlist = new ArrayList<ShipmentInOut>(resultset.list());
    if (resultset.list().size() > 0) {
      return resultlist.get(0);
    } else {
      throw new OBException("shipment " + documentNo + " not found");
    }
于 2014-11-27T13:17:36.977 回答
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您在哪一行出现错误？

尝试这个

 //log.info()
 OBCriteria<ShipmentInOut> shpmntCrit =  OBDal.getInstance().createCriteria(ShipmentInOut.class);
 shpmntCrit.add(Restrictions.eq(ShipmentInOut.PROPERTY_DOCUMENTNO, documentNo));
 shpmntCrit.add(Restrictions.eq(ShipmentInOut.PROPERTY_SALESTRANSACTION, true));

 if (shpmntCrit.list().size() > 0)
   return shpmntCrit.list().get(0);
 else
   throw new OBException("shipment " + documentNo + " not found");
于 2014-11-25T04:57:57.967 回答