在实体Framework Core中执行存储过程，而不期望映射到dbset [英] execute stored procedure in entity Framework Core without expecting map to dbset

问题描述

我正在研究.NET CORE，实体框架核心。我已经存储了需要从.NET类执行的过程。我的存储过程带有'Context'数，我不知道该如何处理，尽管我有dataView这是最终的例外。

I am working on .NET CORE, Entity Framework core. I have stored procedure that I need to execute from .NET class. My stored procedure takes number of 'Context' and I don't know how to deal this, although I have dataView which is final exception.

如果可以使用，我会更伤人我的dataView而不是context.dataModel类，当前实现（Context.Claims.FromSql）

I wounder if I can use my dataView instead of context.dataModel class, current implementation (Context.Claims.FromSql)

public class ClaimDataView
{
    public Guid ClaimId { get; set; }
    public int IdNum { get; set; }
    public string Value { get; set; }
    public DateTime ExpirationDate { get; set; }
    public ClaimAttributionActions Action { get; set; }
    public bool ActiveStateForRole { get; set; }

}

存储过程调用

stored-Procedure call

public Guid UserId { get; set; }
public Guid ClientId { get; set; }
public Guid ConsultationId { get; set; }

  var userParam = new SqlParameter("@UserVal", UserId);
  var clientParam = new SqlParameter("@ClientVal", ConsultationId);
  var consultationParam = new SqlParameter("@ConsultationVal", ConsultationId);

 //**************need help in following line
  var query = Context.Claims.FromSql("EXECUTE dbo.ListUserClaims @userId=@UserVal, @clientId=@ClientVal, @consultationId=@ConsultationVal"
            , userParam, clientParam, consultationParam);

新更新

moduleContext类

new update

moduleContext Class

  protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
       //other models....
       modelBuilder.Query<ClaimDataView>();
    }

存储过程从

执行

Stored Procedure executing from

 var query = Context.Query<UserDataView>().FromSql("EXECUTE dbo.ListUserClaims @userId=@UserVal, @clientId=@ClientVal, @consultationId=@ConsultationVal"
            , userParam, clientParam, consultationParam);

错误

error

System.InvalidOperationException: Cannot create a DbSet for 'UserDataView' because this type is not included in the model for the context.
 at Microsoft.EntityFrameworkCore.Internal.InternalDbQuery`1.get_EntityType()

推荐答案

您可以使用查询类型是EF Core 2.1中引入的。

You can utilize the Query Types introduced in EF Core 2.1.

首先，您需要将类注册为查询类型：

First you need to register you class as query type:

modelBuilder.Query<ClaimDataView>();

然后您可以使用 Context.Query< ClaimDataView>（）代替您当前的 Context.Claims ：

Then you can use Context.Query<ClaimDataView>() in place of your current Context.Claims:

var query = Context.Query<ClaimDataView>().FromSql(...);

---

更新（EF Core 3.x + ：

从EF Core 3.0开始，查询类型为与实体类型合并并重命名为无键实体类型，因此相应的代码为

Starting with EF Core 3.0, query types have been consolidated with entity types and renamed to Keyless Entity Types, so the corresponding code is

modelBuilder.Entity<ClaimDataView>().HasNoKey().ToView(null);

和

var query = Context.Set<ClaimDataView>().FromSql(...);

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