TPH - 面临CTP5的问题 [英] TPH - facing problem with CTP5

问题描述

下面的代码工作正常，直到我转换为CTP5，不确定我是否做错了。

 

 

      public    abstract    class    ReferenceValue  
     {
          public   虚拟   int   ReferenceValueID 
          {
              get ; 
            的设置; 
  &NBSP ;     } 
 
      &n bsp;   public    virtual    string < /跨度>&NBSP;值
&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP; {
&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP ;    get ; 
             < span style ="color：blue"> set ; 
        } 
 
           public    virtual    INT &NBSP; ReferenceGroupID 
&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP; {
&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP ;       get ; 
           ;    set ; 
    &nbs p;   } 
    } 
 
      //   15  
      public    class    RecordStatus  ：   ReferenceValue  
      {
    } 

 

 

'p>

<预风格= "font-family：索拉">&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP; 。modelBuilder.Entity<常见的 ReferenceValue >（）
&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP; &NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP; .MAP<普通的。的 RECORDSTATUS >
&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP ;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;（
&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NB属;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP; R&NBSP; =>
&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP ;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP; {
&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP; &NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP; r.Requires。（的" ReferenceGroupID" ）的HasValue （15）;
&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;}
&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP）
&NBSP;&NBSP;&NBSP;&NBSP;&NBSP; &NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP; .ToTable（的" Common.ReferenceValue" ）; <无线电通信/>

 

我收到以下错误

 

（6,10）：错误3032：ma中的问题从第6行开始的pping片段：映射条件成员'ReferenceValue.ReferenceGroupID'，条件不是'IsNull = False'。删除ReferenceValue.ReferenceGroupID上的条件或将其从
中删除映射。

 

（14,10）：错误3032：从第14行开始映射片段的问题：映射条件成员'ReferenceValue.ReferenceGroupID'，条件不是'IsNull = False'。删除ReferenceValue.ReferenceGroupID上的条件或将其从
中删除映射。

 

---

NeoTech

解决方案

您好，

使用对象模型中公开的属性EF一般不支持鉴别器（除非鉴别器条件是属性不为空）。我们可能会在将来的版本中支持这一点，但这将是对核心EF
组件的更改。

你提到它在CTP5之前工作，所以我怀疑代码实现了不同的东西，你有可能发布预转换代码吗？

~Rowan

Below code worked fine until i did conversion to CTP5, not sure if i am doing something wrong.

 

 

    public abstract class ReferenceValue
    {
        public virtual int ReferenceValueID
        {
            get;
            set;
        }
 
        public virtual string Value
        {
            get;
            set;
        }
 
        public virtual int ReferenceGroupID
        {
            get;
            set;
        }
    }
 
    // 15
    public class RecordStatus : ReferenceValue
    {
    }

 

 

            modelBuilder.Entity<Common.ReferenceValue>()
                .Map<Common.RecordStatus>
                (
                    r =>
                    {
                        r.Requires("ReferenceGroupID").HasValue(15);
                    }
                )
                .ToTable("Common.ReferenceValue");

 

I get the below error

 

(6,10) : error 3032: Problem in mapping fragments starting at line 6:Condition member 'ReferenceValue.ReferenceGroupID' with a condition other than 'IsNull=False' is mapped. Either remove the condition on ReferenceValue.ReferenceGroupID or remove it from the mapping.

 

(14,10) : error 3032: Problem in mapping fragments starting at line 14:Condition member 'ReferenceValue.ReferenceGroupID' with a condition other than 'IsNull=False' is mapped. Either remove the condition on ReferenceValue.ReferenceGroupID or remove it from the mapping.

 

---

NeoTech

解决方案

Hi,

Using a property that is exposed in your object model as a discriminator is not supported by EF in general (unless the discriminator condition is that the property is not-null). We may support this in future releases but this would be a change to core EF components.

You mentioned it worked prior to CTP5 so I suspect the code was achieving something different, any chance you could post up the pre-conversion code?

~Rowan

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