为什么 ExecuteFunction 方法只能通过 ObjectContext 子类中的 base.ExecuteFunction 来使用?
我正在尝试从站点存储库中的 objectcontext 对象调用 ObjectContext.ExecuteFunction。
该存储库是通用的,因此我拥有的只是一个 ObjectContext 对象,而不是实际代表实体框架中的特定对象的对象。
以下是使用 ExecuteFunction 方法生成的代码示例:
[global::System.CodeDom.Compiler.GeneratedCode("System.Data.Entity.Design.EntityClassGenerator", "4.0.0.0")]
public global::System.Data.Objects.ObjectResult<ArtistSearchVariation> FindSearchVariation(string source)
{
global::System.Data.Objects.ObjectParameter sourceParameter;
if ((source != null))
{
sourceParameter = new global::System.Data.Objects.ObjectParameter("Source", source);
}
else
{
sourceParameter = new global::System.Data.Objects.ObjectParameter("Source", typeof(string));
}
return base.ExecuteFunction<ArtistSearchVariation>("FindSearchVariation", sourceParameter);
}
但我想做的是这样的...
public class Repository<E, C> : IRepository<E, C>, IDisposable
where E : EntityObject
where C : ObjectContext
{
private readonly C _ctx;
// ...
public ObjectResult<E> ExecuteFunction(string functionName, params[])
{
// Create object parameters
return _ctx.ExecuteFunction<E>(functionName, /* parameters */)
}
}
任何人都知道为什么我必须从 base
调用 ExecuteFunction
code> 而不是 _ctx
?
另外,有什么办法可以像我写的那样做吗?我真的很想保持我的存储库的通用性,但是由于必须执行存储过程,它看起来越来越困难...
更新:这是我尝试过的方法,该方法不会出现在智能感知中/它给了我当我尝试使用它进行编译时出现错误
public ArtistSearchVariation findSearchVariation(string source)
{
System.Data.Objects.ObjextContext _ctx = new ObjectContext(/* connection string */);
System.Data.Objects.ObjectParameter sourceParam = new ObjectParameter("Source", source);
return _ctx.ExecuteFunction<ArtistSearchVariation>("FindSearchVariation", sourceParam);
}
谢谢,
马特
I'm trying to call ObjectContext.ExecuteFunction from my objectcontext object in the repository of my site.
The repository is generic, so all I have is an ObjectContext object, rather than one that actually represents my specific one from the Entity Framework.
Here's an example of code that was generated that uses the ExecuteFunction method:
[global::System.CodeDom.Compiler.GeneratedCode("System.Data.Entity.Design.EntityClassGenerator", "4.0.0.0")]
public global::System.Data.Objects.ObjectResult<ArtistSearchVariation> FindSearchVariation(string source)
{
global::System.Data.Objects.ObjectParameter sourceParameter;
if ((source != null))
{
sourceParameter = new global::System.Data.Objects.ObjectParameter("Source", source);
}
else
{
sourceParameter = new global::System.Data.Objects.ObjectParameter("Source", typeof(string));
}
return base.ExecuteFunction<ArtistSearchVariation>("FindSearchVariation", sourceParameter);
}
But what I would like to do is something like this...
public class Repository<E, C> : IRepository<E, C>, IDisposable
where E : EntityObject
where C : ObjectContext
{
private readonly C _ctx;
// ...
public ObjectResult<E> ExecuteFunction(string functionName, params[])
{
// Create object parameters
return _ctx.ExecuteFunction<E>(functionName, /* parameters */)
}
}
Anyone know why I have to call ExecuteFunction
from base
instead of _ctx
?
Also, is there any way to do something like I've written out? I would really like to keep my repository generic, but with having to execute stored procedures it's looking more and more difficult...
Update: Here's what I've tried and the method does not show up in intellisense/it gives me an error when I try to compile with it
public ArtistSearchVariation findSearchVariation(string source)
{
System.Data.Objects.ObjextContext _ctx = new ObjectContext(/* connection string */);
System.Data.Objects.ObjectParameter sourceParam = new ObjectParameter("Source", source);
return _ctx.ExecuteFunction<ArtistSearchVariation>("FindSearchVariation", sourceParam);
}
Thanks,
Matt
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您不必使用 base.ExecuteFunction,ExecuteFunction 方法(和重载)是公共的,不受保护,因此您可以从外部站点调用它们。你打电话有困难吗?
You don't have to use base.ExecuteFunction, the ExecuteFunction method (and overloads) are public, not protected, so you can call them from external sites. Are you having trouble calling it?