2

使用实体框架，我以相同的方式将两个不同的对象保存到数据库中。

插入一个对象（它生成以下 sql）：

exec sp_executesql N'insert [dbo].[ImportJob]([SourceSystemId], [Start], [Source],   [ImportType], [IsReadCompleted], [IsValidated], [IsImportCompleted])
values (@0, @1, @2, @3, @4, @5, @6)
select [Id]
from [dbo].[ImportJob]
where @@ROWCOUNT > 0 and [Id] = scope_identity()',N'@0 uniqueidentifier,@1  datetime2(7),@2 nvarchar(1000),@3 int,@4 bit,@5 bit,@6 bit',@0='1A908EAE-9438-49A3-9784-C9D84F99D217',@1='2013-08-29 14:46:58.3071350',@2=N'uploads\825d3e08-f795-45dc-aa8f-16e02dec3b29.xlsx',@3=1,@4=0,@5=0,@6=0

另一个对象没有插入，也不会返回错误。为此框架生成的唯一 SQL EF 是：

exec sp_executesql N'declare @generated_keys table([Id] uniqueidentifier)
insert [dbo].[ImportOrganization]([ImportJobId], [Import_ExistingId], [Import_SourceSystemPk], [Import_IsNew], [Import_IsUpdated], [Import_IsRemoved], [SourcePk], [OrganizationTypeText], [Name], [OrganizationTypeId], [MissionStatement], [Address_Street], [Address_Number], [Address_Postcode], [Address_City], [PhoneNumber], [Website], [EmailAddress], [BankAccount], [BankAccountHolder])
output inserted.[Id] into @generated_keys
values (@0, null, @1, @2, @3, @4, @5, @6, @7, @8, @9, @10, @11, @12, @13, @14, @15, @16, @17, @18)
select t.[Id], t.[TimeStamp]
from @generated_keys as g join [dbo].[ImportOrganization] as t on g.[Id] = t.[Id]
where @@ROWCOUNT > 0',N'@0 int,@1 nvarchar(max) ,@2 bit,@3 bit,@4 bit,@5 nvarchar(max) ,@6 nvarchar(100),@7 nvarchar(100),@8 int,@9 nvarchar(1000),@10 nvarchar(100),@11 nvarchar(20),@12 nvarchar(10),@13 nvarchar(100),@14 nvarchar(20),@15 nvarchar(200),@16 nvarchar(200),@17 nvarchar(50),@18 nvarchar(100)',@0=20,@1=N'1',@2=1,@3=0,@4=0,@5=N'1',@6=N'Bla Bla',@7=N'Test bla',@8=1,@9=N'bla bla bla mission',@10=N'Street',@11=N'1',@12=N'30010',@13=N'Blaa',@14=N'0140 123 45 678',@15=N'www.test.org',@16=N'info@test.org',@17=N'123456789',@18=N'Bla Bla'
go

更新：EF代码

这来自 GenericRepository.cs（基于本教程）：

public virtual void Insert(TEntity entity) {
    dbSet.Add(entity);
}

和相应的 UnitOfWork.cs：

public void Save() {
    context.SaveChanges();
}

失败的对象：

ImportOrganization item = new ImportOrganization();

item.Name = excelReader.GetString(1);
item.OrganizationTypeText = excelReader.GetString(2);
item.MissionStatement = excelReader.GetString(3);
item.Address = new DAL.Entities.Address
            {
                Street = excelReader.GetString(4),
                Number = excelReader.GetString(5),
                Postcode = excelReader.GetString(6),
                City = excelReader.GetString(7)
            };
item.PhoneNumber = excelReader.GetString(8);
item.Website = excelReader.GetString(9);
item.EmailAddress = excelReader.GetString(10);
item.BankAccount = excelReader.GetString(11);
item.BankAccountHolder = excelReader.GetString(12);
item.Import = new ImportEntity
{
       SourceSystemPk = excelReader.GetString(0)
};
item.ImportJob = _importJob;
item.ImportJobId = _importJob.Id;
item.SourcePk = excelReader.GetString(0);

调用插入和保存方法：

unitOfWork.ImportOrganizationRepository.Insert(item);
unitOfWork.Save();

为什么 EF 不会为新对象创建导入查询？

4

1 回答 1

1

这个问题的根本原因是PEBKAC。你卑微的程序员查看了错误的数据库表。

于 2013-08-30T09:18:50.443 回答