我有一個插入方法在我的倉庫就像這樣:實體框架 - 通過ObjectContext的插入新的實體不利用現有的實體屬性
public T Insert(T entity)
{
_ctx.AddObject(EntityName, entity);
_ctx.SaveChanges();
return entity;
}
如果我執行下面的代碼,分配給我的實體的值並不傳播到執行的SQL。
Category c = new Category();
c.Name = CLEARANCE;
c = categoryManager.Insert(c);
的SQL應該像
INSERT INTO Category(Name) VALUES('Clearance')
相反,下面的SQL正在執行
insert [dbo].[Category]([Name])
values (null)
select [Id]
from [dbo].[Category]
where @@ROWCOUNT > 0 and [Id] = scope_identity()
我調試的代碼一直到AddObject方法,並驗證了名稱屬性是在實體上設置的,但它並不反映在SQL中。
你能看到我在做什麼錯嗎?
更新與XML映射
<?xml version="1.0" encoding="utf-8"?>
<edmx:Edmx Version="1.0" xmlns:edmx="http://schemas.microsoft.com/ado/2007/06/edmx">
<!-- EF Runtime content -->
<edmx:Runtime>
<!-- SSDL content -->
<edmx:StorageModels>
<Schema Namespace="ProductCatalogModel.Store" Alias="Self" Provider="System.Data.SqlClient" ProviderManifestToken="2008" xmlns:store="http://schemas.microsoft.com/ado/2007/12/edm/EntityStoreSchemaGenerator" xmlns="http://schemas.microsoft.com/ado/2006/04/edm/ssdl">
<EntityContainer Name="ProductCatalogModelStoreContainer">
<EntitySet Name="Category" EntityType="ProductCatalogModel.Store.Category" store:Type="Tables" Schema="dbo" />
<EntitySet Name="Product" EntityType="ProductCatalogModel.Store.Product" store:Type="Tables" Schema="dbo" />
<AssociationSet Name="FK_Product_Category" Association="ProductCatalogModel.Store.FK_Product_Category">
<End Role="Category" EntitySet="Category" />
<End Role="Product" EntitySet="Product" />
</AssociationSet>
</EntityContainer>
<EntityType Name="Category">
<Key>
<PropertyRef Name="Id" />
</Key>
<Property Name="Id" Type="int" Nullable="false" StoreGeneratedPattern="Identity" />
<Property Name="Name" Type="varchar" Nullable="false" MaxLength="50" />
</EntityType>
<EntityType Name="Product">
<Key>
<PropertyRef Name="Id" />
</Key>
<Property Name="Id" Type="int" Nullable="false" StoreGeneratedPattern="Identity" />
<Property Name="Name" Type="varchar" Nullable="false" MaxLength="50" />
<Property Name="CategoryId" Type="int" Nullable="false" />
</EntityType>
<Association Name="FK_Product_Category">
<End Role="Category" Type="ProductCatalogModel.Store.Category" Multiplicity="1" />
<End Role="Product" Type="ProductCatalogModel.Store.Product" Multiplicity="*" />
<ReferentialConstraint>
<Principal Role="Category">
<PropertyRef Name="Id" />
</Principal>
<Dependent Role="Product">
<PropertyRef Name="CategoryId" />
</Dependent>
</ReferentialConstraint>
</Association>
</Schema>
</edmx:StorageModels>
<!-- CSDL content -->
<edmx:ConceptualModels>
<Schema Namespace="ProductCatalogModel" Alias="Self" xmlns="http://schemas.microsoft.com/ado/2006/04/edm">
<EntityContainer Name="ProductCatalogEntities">
<EntitySet Name="Category" EntityType="ProductCatalogModel.Category" />
<EntitySet Name="Product" EntityType="ProductCatalogModel.Product" />
<AssociationSet Name="FK_Product_Category" Association="ProductCatalogModel.FK_Product_Category">
<End Role="Category" EntitySet="Category" />
<End Role="Product" EntitySet="Product" />
</AssociationSet>
</EntityContainer>
<EntityType Name="Category">
<Key>
<PropertyRef Name="Id" />
</Key>
<Property Name="Id" Type="Int32" Nullable="false" />
<Property Name="Name" Type="String" Nullable="false" MaxLength="50" Unicode="false" FixedLength="false" />
<NavigationProperty Name="Product" Relationship="ProductCatalogModel.FK_Product_Category" FromRole="Category" ToRole="Product" />
</EntityType>
<EntityType Name="Product" Abstract="false">
<Key>
<PropertyRef Name="Id" />
</Key>
<Property Name="Id" Type="Int32" Nullable="false" />
<Property Name="Name" Type="String" Nullable="false" MaxLength="50" Unicode="false" FixedLength="false" />
<NavigationProperty Name="Category" Relationship="ProductCatalogModel.FK_Product_Category" FromRole="Product" ToRole="Category" />
</EntityType>
<Association Name="FK_Product_Category">
<End Role="Category" Type="ProductCatalogModel.Category" Multiplicity="1" />
<End Role="Product" Type="ProductCatalogModel.Product" Multiplicity="*" />
</Association>
</Schema>
</edmx:ConceptualModels>
<!-- C-S mapping content -->
<edmx:Mappings>
<Mapping Space="C-S" xmlns="urn:schemas-microsoft-com:windows:storage:mapping:CS">
<EntityContainerMapping StorageEntityContainer="ProductCatalogModelStoreContainer" CdmEntityContainer="ProductCatalogEntities">
<EntitySetMapping Name="Category">
<EntityTypeMapping TypeName="IsTypeOf(ProductCatalogModel.Category)">
<MappingFragment StoreEntitySet="Category">
<ScalarProperty Name="Id" ColumnName="Id" />
<ScalarProperty Name="Name" ColumnName="Name" />
</MappingFragment>
</EntityTypeMapping>
</EntitySetMapping>
<EntitySetMapping Name="Product">
<EntityTypeMapping TypeName="IsTypeOf(ProductCatalogModel.Product)">
<MappingFragment StoreEntitySet="Product">
<ScalarProperty Name="Id" ColumnName="Id" />
<ScalarProperty Name="Name" ColumnName="Name" />
</MappingFragment>
</EntityTypeMapping>
</EntitySetMapping>
<AssociationSetMapping Name="FK_Product_Category" TypeName="ProductCatalogModel.FK_Product_Category" StoreEntitySet="Product">
<EndProperty Name="Category">
<ScalarProperty Name="Id" ColumnName="CategoryId" />
</EndProperty>
<EndProperty Name="Product">
<ScalarProperty Name="Id" ColumnName="Id" />
</EndProperty>
</AssociationSetMapping>
</EntityContainerMapping>
</Mapping>
</edmx:Mappings>
</edmx:Runtime>
<!-- EF Designer content (DO NOT EDIT MANUALLY BELOW HERE) -->
<edmx:Designer xmlns="http://schemas.microsoft.com/ado/2007/06/edmx">
<edmx:Connection>
<DesignerInfoPropertySet>
<DesignerProperty Name="MetadataArtifactProcessing" Value="EmbedInOutputAssembly" />
</DesignerInfoPropertySet>
</edmx:Connection>
<edmx:Options>
<DesignerInfoPropertySet>
<DesignerProperty Name="ValidateOnBuild" Value="true" />
</DesignerInfoPropertySet>
</edmx:Options>
<!-- Diagram content (shape and connector positions) -->
<edmx:Diagrams>
<Diagram Name="Model">
<EntityTypeShape EntityType="ProductCatalogModel.Category" Width="1.5" PointX="0.75" PointY="0.875" Height="1.427958984375" IsExpanded="true" />
<EntityTypeShape EntityType="ProductCatalogModel.Product" Width="1.5" PointX="3" PointY="0.875" Height="1.427958984375" IsExpanded="true" />
<AssociationConnector Association="ProductCatalogModel.FK_Product_Category" ManuallyRouted="false">
<ConnectorPoint PointX="2.25" PointY="1.5889794921875" />
<ConnectorPoint PointX="3" PointY="1.5889794921875" /></AssociationConnector>
</Diagram></edmx:Diagrams>
</edmx:Designer>
</edmx:Edmx>
你看過可能的映射問題嗎?你可以粘貼映射XML嗎? – 2009-10-09 19:17:00
用xml – Brian 2009-10-09 19:23:06
更新了我上面的原始帖子有趣的是,我粘貼了你的xml並重新創建了你的代碼,它對我來說工作得很好。你是否嘗試過隔離ObjectContext(即嘗試添加沒有Repository層的對象)。 我也注意到你有c.Name = CLEARANCE。 CLEARANCE是一個變量/常量嗎? – 2009-10-09 21:04:39