Question

我收到空错误ORA-01407：使用实体框架通过代码更新记录时，无法将（“ MGR”。“ MGR_STRT_CLASSIFICATION”。“ PRODUCT_ID”）更新为NULL，但是更新脚本在数据库中运行正常

我在表的两列上都有唯一的约束，即PRODUCT_ID和MANAGERSTRATEGYID

如果我在数据库中运行此代码，它将运行正常。注意，我尚未将PRODUCT_ID和MANAGERSTRATEGYID与表中的值一起使用，否则将是唯一的约束冲突。

update mgr.MGR_STRT_CLASSIFICATION
set managerstrategyid = 7079,
    Legacy_Strategy_ID = 19,
    managerstrategy_Type_id = 1
    where ID = 760

在我的服务器代码中，我执行以下操作，并得到错误product_id不能为空

var mgrClassificationService = GetService<MGR_STRT_CLASSIFICATION>();

var isExists = mgrClassificationService.Where(x =>
    x.MANAGERSTRATEGYID == model.ManagerStrategyId && x.PRODUCT_ID == model.ProductId).FirstOrDefault();

if (isExists == null)
{

    var mgrClassficationOverride = new MGR_STRT_CLASSIFICATION();
    if (model != null)
    {
        mgrClassficationOverride.ID = model.ID;
        mgrClassficationOverride.PRODUCT_ID = model.ProductId;
        mgrClassficationOverride.LEGACY_STRATEGY_ID = model.LegacyStrategyId;
      //  mgrClassficationOverride.STRATEGY_ID = model.StrategyId;
        mgrClassficationOverride.MANAGERSTRATEGY_TYPE_ID = model.ManagerStrategyTypeId;
        mgrClassficationOverride.MANAGERSTRATEGYID = model.ManagerStrategyId;
        mgrClassificationService.Update(mgrClassficationOverride);
    }
    response = Request.CreateResponse(HttpStatusCode.OK, mgrClassficationOverride);
}
else
{
    var mgrClassficationOverride = new MGR_STRT_CLASSIFICATION();
    if (model != null)
    {
        mgrClassficationOverride.ID = model.ID;
        mgrClassficationOverride.LEGACY_STRATEGY_ID = model.LegacyStrategyId;
        mgrClassficationOverride.MANAGERSTRATEGY_TYPE_ID = model.ManagerStrategyTypeId;
        //mgrClassficationOverride.PRODUCT_ID = model.ProductId;
        //mgrClassficationOverride.MANAGERSTRATEGYID = model.ManagerStrategyId;
        mgrClassificationService.Update(mgrClassficationOverride);
    }
    response = Request.CreateResponse(HttpStatusCode.OK, mgrClassficationOverride);
}

return response;

ViewModel

public class ClassificationItemViewModelCreate
    {
        public int ID { get; set; }
        public int ManagerStrategyId { get; set; }
        public int? ProductId { get; set; }
        public int? StrategyId { get; set; }
        public int? LegacyStrategyId { get; set; }
        public int? ManagerStrategyTypeId { get; set; }

    }

实体

  public class MGR_STRT_CLASSIFICATION : Entity, ILegacyStrategy
    {       


        public int MANAGERSTRATEGYID { get; set; }
        public int? PRODUCT_ID { get; set; }
        public int? STRATEGY_ID { get; set; }
        public int? SUB_STRATEGY_ID { get; set; }
        public int? SECTOR_FOCUS_ID { get; set; }
        public int? REGIONAL_FOCUS_ID { get; set; }
        public int? LEGACY_STRATEGY_ID { get; set; }

        public int? MANAGERSTRATEGY_TYPE_ID { get; set; }
        ////public string OVERRIDE_NOTES { get; set; } need to add

        [ForeignKey("PRODUCT_ID")]
        public V_PRODUCT PRODUCT { get; set; }

        [ForeignKey("MANAGERSTRATEGYID")]
        public MANAGERSTRATEGY MANAGERSTRATEGY { get; set; }

        [ForeignKey("LEGACY_STRATEGY_ID")]
        public LEGACY_STRATEGY LEGACYSTRATEGY { get; set; }

        public override string ToString() {
            return string.Format("MGR_STRT_CLASSIFICATION: ID={0}", this.ID);
        }
    }

在C＃中从服务器端更新代码时出现Null错误

0 个答案: