尝试将EF和Automapper与嵌套DTO一起使用时获取NotSupportedException
我正在使用Queryable Extensions的Automapper，但我的相关表格存在问题。
这是一个测试架构
CREATE TABLE [dbo].[AddressTable](
[AddressId] [int] NOT NULL,
[AddressLine1] [varchar](50) NOT NULL,
[AddressLine2] [varchar](50) NOT NULL,
CONSTRAINT [PK_AddressTable] PRIMARY KEY CLUSTERED ([AddressId] ASC)
)
CREATE TABLE [dbo].[FooTable](
[FooId] [int] NOT NULL,
[MailingAddressId] [int] NULL,
[ShippingAddressId] [int] NULL,
CONSTRAINT [PK_FooTable] PRIMARY KEY CLUSTERED ([FooId] ASC)
)
ALTER TABLE [dbo].[FooTable] ADD CONSTRAINT [FK_FooTable_AddressTable_Mailing] FOREIGN KEY([MailingAddressId])
REFERENCES [dbo].[AddressTable] ([AddressId])
ALTER TABLE [dbo].[FooTable] ADD CONSTRAINT [FK_FooTable_AddressTable_Shipping] FOREIGN KEY([ShippingAddressId])
REFERENCES [dbo].[AddressTable] ([AddressId])
INSERT INTO [dbo].[AddressTable] VALUES (1,'123 Fake St','Apt 1')
INSERT INTO [dbo].[AddressTable] VALUES (2,'345 Real Ave','')
INSERT INTO [dbo].[FooTable] VALUES (1,1,2)
我使用数据库优先方法生成了EDMX文件，然后我重命名了FooTable中地址的两个关联属性，并删除了AddressTable方面的两个属性。这是它生成的EDMX
<?xml version="1.0" encoding="utf-8"?>
<edmx:Edmx Version="2.0" xmlns:edmx="http://schemas.microsoft.com/ado/2008/10/edmx">
<!-- EF Runtime content -->
<edmx:Runtime>
<!-- SSDL content -->
<edmx:StorageModels>
<Schema Namespace="TestDbModel.Store" Alias="Self" Provider="System.Data.SqlClient" ProviderManifestToken="2005" xmlns:store="http://schemas.microsoft.com/ado/2007/12/edm/EntityStoreSchemaGenerator" xmlns="http://schemas.microsoft.com/ado/2009/02/edm/ssdl">
<EntityContainer Name="TestDbModelStoreContainer">
<EntitySet Name="AddressTable" EntityType="TestDbModel.Store.AddressTable" store:Type="Tables" Schema="dbo" />
<EntitySet Name="FooTable" EntityType="TestDbModel.Store.FooTable" store:Type="Tables" Schema="dbo" />
<AssociationSet Name="FK_FooTable_AddressTable_Mailing" Association="TestDbModel.Store.FK_FooTable_AddressTable_Mailing">
<End Role="AddressTable" EntitySet="AddressTable" />
<End Role="FooTable" EntitySet="FooTable" />
</AssociationSet>
<AssociationSet Name="FK_FooTable_AddressTable_Shipping" Association="TestDbModel.Store.FK_FooTable_AddressTable_Shipping">
<End Role="AddressTable" EntitySet="AddressTable" />
<End Role="FooTable" EntitySet="FooTable" />
</AssociationSet>
</EntityContainer>
<EntityType Name="AddressTable">
<Key>
<PropertyRef Name="AddressId" />
</Key>
<Property Name="AddressId" Type="int" Nullable="false" />
<Property Name="AddressLine1" Type="varchar" Nullable="false" MaxLength="50" />
<Property Name="AddressLine2" Type="varchar" Nullable="false" MaxLength="50" />
</EntityType>
<EntityType Name="FooTable">
<Key>
<PropertyRef Name="FooId" />
</Key>
<Property Name="FooId" Type="int" Nullable="false" />
<Property Name="MailingAddressId" Type="int" />
<Property Name="ShippingAddressId" Type="int" />
</EntityType>
<Association Name="FK_FooTable_AddressTable_Mailing">
<End Role="AddressTable" Type="TestDbModel.Store.AddressTable" Multiplicity="0..1" />
<End Role="FooTable" Type="TestDbModel.Store.FooTable" Multiplicity="*" />
<ReferentialConstraint>
<Principal Role="AddressTable">
<PropertyRef Name="AddressId" />
</Principal>
<Dependent Role="FooTable">
<PropertyRef Name="MailingAddressId" />
</Dependent>
</ReferentialConstraint>
</Association>
<Association Name="FK_FooTable_AddressTable_Shipping">
<End Role="AddressTable" Type="TestDbModel.Store.AddressTable" Multiplicity="0..1" />
<End Role="FooTable" Type="TestDbModel.Store.FooTable" Multiplicity="*" />
<ReferentialConstraint>
<Principal Role="AddressTable">
<PropertyRef Name="AddressId" />
</Principal>
<Dependent Role="FooTable">
<PropertyRef Name="ShippingAddressId" />
</Dependent>
</ReferentialConstraint>
</Association>
</Schema></edmx:StorageModels>
<!-- CSDL content -->
<edmx:ConceptualModels>
<Schema Namespace="TestDbModel" Alias="Self" xmlns:annotation="http://schemas.microsoft.com/ado/2009/02/edm/annotation" xmlns="http://schemas.microsoft.com/ado/2008/09/edm">
<EntityContainer Name="TestDbEntities" annotation:LazyLoadingEnabled="true">
<EntitySet Name="AddressTables" EntityType="TestDbModel.AddressTable" />
<EntitySet Name="FooTables" EntityType="TestDbModel.FooTable" />
<AssociationSet Name="FK_FooTable_AddressTable_Mailing" Association="TestDbModel.FK_FooTable_AddressTable_Mailing">
<End Role="AddressTable" EntitySet="AddressTables" />
<End Role="FooTable" EntitySet="FooTables" />
</AssociationSet>
<AssociationSet Name="FK_FooTable_AddressTable_Shipping" Association="TestDbModel.FK_FooTable_AddressTable_Shipping">
<End Role="AddressTable" EntitySet="AddressTables" />
<End Role="FooTable" EntitySet="FooTables" />
</AssociationSet>
</EntityContainer>
<EntityType Name="AddressTable">
<Key>
<PropertyRef Name="AddressId" />
</Key>
<Property Type="Int32" Name="AddressId" Nullable="false" />
<Property Type="String" Name="AddressLine1" Nullable="false" MaxLength="50" FixedLength="false" Unicode="false" />
<Property Type="String" Name="AddressLine2" Nullable="false" MaxLength="50" FixedLength="false" Unicode="false" />
</EntityType>
<EntityType Name="FooTable">
<Key>
<PropertyRef Name="FooId" />
</Key>
<Property Type="Int32" Name="FooId" Nullable="false" />
<Property Type="Int32" Name="MailingAddressId" />
<Property Type="Int32" Name="ShippingAddressId" />
<NavigationProperty Name="MailingAddress" Relationship="TestDbModel.FK_FooTable_AddressTable_Mailing" FromRole="FooTable" ToRole="AddressTable" />
<NavigationProperty Name="ShippingAddress" Relationship="TestDbModel.FK_FooTable_AddressTable_Shipping" FromRole="FooTable" ToRole="AddressTable" />
</EntityType>
<Association Name="FK_FooTable_AddressTable_Mailing">
<End Type="TestDbModel.AddressTable" Role="AddressTable" Multiplicity="0..1" />
<End Type="TestDbModel.FooTable" Role="FooTable" Multiplicity="*" />
<ReferentialConstraint>
<Principal Role="AddressTable">
<PropertyRef Name="AddressId" />
</Principal>
<Dependent Role="FooTable">
<PropertyRef Name="MailingAddressId" />
</Dependent>
</ReferentialConstraint>
</Association>
<Association Name="FK_FooTable_AddressTable_Shipping">
<End Type="TestDbModel.AddressTable" Role="AddressTable" Multiplicity="0..1" />
<End Type="TestDbModel.FooTable" Role="FooTable" Multiplicity="*" />
<ReferentialConstraint>
<Principal Role="AddressTable">
<PropertyRef Name="AddressId" />
</Principal>
<Dependent Role="FooTable">
<PropertyRef Name="ShippingAddressId" />
</Dependent>
</ReferentialConstraint>
</Association>
</Schema>
</edmx:ConceptualModels>
<!-- C-S mapping content -->
<edmx:Mappings>
<Mapping Space="C-S" xmlns="http://schemas.microsoft.com/ado/2008/09/mapping/cs">
<EntityContainerMapping StorageEntityContainer="TestDbModelStoreContainer" CdmEntityContainer="TestDbEntities">
<EntitySetMapping Name="AddressTables">
<EntityTypeMapping TypeName="TestDbModel.AddressTable">
<MappingFragment StoreEntitySet="AddressTable">
<ScalarProperty Name="AddressLine2" ColumnName="AddressLine2" />
<ScalarProperty Name="AddressLine1" ColumnName="AddressLine1" />
<ScalarProperty Name="AddressId" ColumnName="AddressId" />
</MappingFragment>
</EntityTypeMapping>
</EntitySetMapping>
<EntitySetMapping Name="FooTables">
<EntityTypeMapping TypeName="TestDbModel.FooTable">
<MappingFragment StoreEntitySet="FooTable">
<ScalarProperty Name="ShippingAddressId" ColumnName="ShippingAddressId" />
<ScalarProperty Name="MailingAddressId" ColumnName="MailingAddressId" />
<ScalarProperty Name="FooId" ColumnName="FooId" />
</MappingFragment>
</EntityTypeMapping>
</EntitySetMapping>
</EntityContainerMapping>
</Mapping>
</edmx:Mappings>
</edmx:Runtime>
<!-- EF Designer content (DO NOT EDIT MANUALLY BELOW HERE) -->
<Designer xmlns="http://schemas.microsoft.com/ado/2008/10/edmx">
<Connection>
<DesignerInfoPropertySet>
<DesignerProperty Name="MetadataArtifactProcessing" Value="EmbedInOutputAssembly" />
</DesignerInfoPropertySet>
</Connection>
<Options>
<DesignerInfoPropertySet>
<DesignerProperty Name="ValidateOnBuild" Value="true" />
<DesignerProperty Name="EnablePluralization" Value="True" />
<DesignerProperty Name="IncludeForeignKeysInModel" Value="True" />
<DesignerProperty Name="CodeGenerationStrategy" Value="None" />
</DesignerInfoPropertySet>
</Options>
<!-- Diagram content (shape and connector positions) -->
<Diagrams></Diagrams>
</Designer>
</edmx:Edmx>
这是我的测试程序来显示我的问题
using System.Linq;
using AutoMapper;
using AutoMapper.QueryableExtensions;
namespace Sandbox_Console
{
class Program
{
class FooDTO
{
public int FooId { get; set; }
public AddressDTO MailingAddress { get; set; }
public AddressDTO ShippingAddress { get; set; }
}
class AddressDTO
{
public string AddressLine1 { get; set; }
public string AddressLine2 { get; set; }
}
static void Main()
{
Mapper.CreateMap<FooTable, FooDTO>();
Mapper.CreateMap<AddressTable, AddressDTO>();
Mapper.AssertConfigurationIsValid();
using (var ctx = new TestDbEntities())
{
var collection = ctx.FooTables.Where(a => a.FooId == 1).Project().To<FooDTO>();
foreach (var fooDTO in collection)
{
System.Diagnostics.Debugger.Break();
}
System.Diagnostics.Debugger.Break();
}
}
}
}
当我运行我的代码时，我在foreach循环中评估NotSupportedException时得到collection。这是异常的完整堆栈跟踪。
System.NotSupportedException was unhandled
HResult=-2146233067
Message=The LINQ expression node type 'Invoke' is not supported in LINQ to Entities.
Source=System.Data.Entity
StackTrace:
at System.Data.Objects.ELinq.ExpressionConverter.NotSupportedTranslator.Translate(ExpressionConverter parent, Expression linq)
at System.Data.Objects.ELinq.ExpressionConverter.TranslateExpression(Expression linq)
at System.Data.Objects.ELinq.ExpressionConverter.MemberInitTranslator.TypedTranslate(ExpressionConverter parent, MemberInitExpression linq)
at System.Data.Objects.ELinq.ExpressionConverter.TranslateExpression(Expression linq)
at System.Data.Objects.ELinq.ExpressionConverter.TranslateLambda(LambdaExpression lambda, DbExpression input)
at System.Data.Objects.ELinq.ExpressionConverter.MethodCallTranslator.SelectTranslator.Translate(ExpressionConverter parent, MethodCallExpression call)
at System.Data.Objects.ELinq.ExpressionConverter.MethodCallTranslator.TypedTranslate(ExpressionConverter parent, MethodCallExpression linq)
at System.Data.Objects.ELinq.ExpressionConverter.Convert()
at System.Data.Objects.ELinq.ELinqQueryState.GetExecutionPlan(Nullable`1 forMergeOption)
at System.Data.Objects.ObjectQuery`1.GetResults(Nullable`1 forMergeOption)
at System.Data.Objects.ObjectQuery`1.System.Collections.Generic.IEnumerable.GetEnumerator()
at System.Data.Entity.Internal.Linq.InternalQuery`1.GetEnumerator()
at System.Data.Entity.Infrastructure.DbQuery`1.System.Collections.Generic.IEnumerable.GetEnumerator()
at Sandbox_Console.Program.Main() in e:\Code\Sandbox Console\Sandbox Console\Program.cs:line 34
InnerException:
我知道这是错误背后的AddressDTO类的映射。从FooDTO中评论它们会使错误消失。
导致这种情况发生的相关集合我做错了什么？
0 个答案:
没有答案
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