EntityFramework未映射但返回结果

时间:2019-01-17 14:05:48

标签: c# entity-framework

这听起来很奇怪,但是我有一个实体:

public class Center : Archive
{
    public int Id { get; set; }
    [MaxLength(50)] public string ExternalId { get; set; }
    [Required] [MaxLength(150)] public string Name { get; set; }
    [MaxLength(255)] public string Description { get; set; }
    [MaxLength(50)] public string Address1 { get; set; }
    [MaxLength(50)] public string Address2 { get; set; }
    [MaxLength(50)] public string Address3 { get; set; }
    [MaxLength(50)] public string Address4 { get; set; }
    [MaxLength(10)] public string PostCode { get; set; }

    [MaxLength(100)] public string CollectionPointContact { get; set; }
    [MaxLength(50)] public string CollectionPointTelephone { get; set; }
    [MaxLength(50)] public string CollectionPointFax { get; set; }
    [MaxLength(255)] public string CollectionPointEmail { get; set; }

    [NotMapped] public int Due { get; set; }
    [NotMapped] public int Today { get; set; }
    [NotMapped] public int Expected { get; set; }
    [NotMapped] public int Planned { get; set; }

    public int CompanyId { get; set; }
    public Company Company { get; set; }
    public IList<Collection> Collections { get; set; }
}

在列出,编辑,创建等时。[NotMapped]属性不应映射到数据库中。 但是,我有一个填充这些属性的存储过程:

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER PROCEDURE [dbo].[ListCentersByCompany]
    @CompanyId [int]
AS
BEGIN
    select ce.*,
           SUM(CASE WHEN co.PlannedCollectionDate < CONVERT(DATE, GETDATE()) THEN 1 ELSE 0 END) AS Due,
           SUM(CASE WHEN co.PlannedCollectionDate = CONVERT(DATE, GETDATE()) THEN 1 ELSE 0 END) AS Today,
           SUM(CASE WHEN co.PlannedCollectionDate = DATEADD(DAY, 1, CONVERT(DATE, GETDATE())) THEN 1 ELSE 0 END) AS Expected,
           SUM(CASE WHEN co.PlannedCollectionDate > DATEADD(DAY, 1, CONVERT(DATE, GETDATE())) THEN 1 ELSE 0 END) AS Planned
    from Centers ce join
         Collections co
         on ce.Id = co.CenterId
    WHERE ce.CompanyId = @CompanyId
    group by 
        ce.Id,
        ce.ExternalId,
        ce.Name,
        ce.Description,
        ce.Address1,
        ce.Address2,
        ce.Address3,
        ce.Address4,
        ce.PostCode,
        ce.CollectionPointContact,
        ce.CollectionPointEmail,
        ce.CollectionPointFax,
        ce.CollectionPointTelephone,
        ce.CompanyId,
        ce.CreatedById,
        ce.ModifiedById,
        ce.DateCreated,
        ce.DateModified
END

EntityFramework知道不映射它们,但是当我使用SPROC时,我希望它们被映射。 那可能吗?我知道,我可以创建一个新模型并使用它,但是我想知道是否有更简单的方法?

1 个答案:

答案 0 :(得分:0)

Database.SqlQuery在具有或不具有实体类型的情况下的行为为documented extensively

  

创建一个原始SQL查询,该查询将返回给定类型的元素。该类型可以是具有与查询返回的列名相匹配的属性的任何类型,也可以是简单的原始类型。该类型不必是实体类型。即使返回的对象类型是实体类型,上下文也永远不会跟踪此查询的结果。

,未提及具有非映射属性的古怪行为。正在运行...

_context.Database.SqlQuery<T>($"exec {storedProcedureName}")
T是映射的实体类型时,

...不填充未映射的属性。当使用任何其他包含匹配属性的类型时,它将执行此操作。我认为这有点奇怪,甚至怀疑这是意外行为。

因此您不能使用Center作为接收类型,但是可以使用直接从Center继承的非映射类型。