I tried to change the Entities Table Name and encountered an error.
I just renamed TblRecord as the name was from the Table Name
What is the mistake here and how to resolve it ?
Error :
+ _innerException {"The specified table does not exist. [ Records ]"} System.Exception {System.Data.SqlServerCe.SqlCeException}
The Edmx File
<?xml version="1.0" encoding="utf-8"?>
<edmx:Edmx Version="3.0" xmlns:edmx="http://schemas.microsoft.com/ado/2009/11/edmx">
<!-- EF Runtime content -->
<edmx:Runtime>
<!-- SSDL content -->
<edmx:StorageModels>
<Schema Namespace="Xz.Business.Matches.Store" Alias="Self" Provider="System.Data.SqlServerCe.4.0" ProviderManifestToken="4.0" xmlns:store="http://schemas.microsoft.com/ado/2007/12/edm/EntityStoreSchemaGenerator" xmlns="http://schemas.microsoft.com/ado/2009/11/edm/ssdl">
<EntityContainer Name="XzBusinessMatchesStoreContainer">
<EntitySet Name="Records" EntityType="Xz.Business.Matches.Store.Records" store:Type="Tables" />
</EntityContainer>
<EntityType Name="Records">
<Key>
<PropertyRef Name="Record" />
</Key>
<Property Name="Record" Type="nvarchar" Nullable="false" MaxLength="100" />
<Property Name="Relations" Type="nvarchar" MaxLength="450" />
</EntityType>
</Schema>
</edmx:StorageModels>
<!-- CSDL content -->
<edmx:ConceptualModels>
<Schema Namespace="Xz.Business.Matches" Alias="Self" p1:UseStrongSpatialTypes="false" xmlns:annotation="http://schemas.microsoft.com/ado/2009/02/edm/annotation" xmlns:p1="http://schemas.microsoft.com/ado/2009/02/edm/annotation" xmlns="http://schemas.microsoft.com/ado/2009/11/edm">
<EntityContainer Name="RecordzEntities" p1:LazyLoadingEnabled="true">
<EntitySet Name="Records" EntityType="Xz.Business.Matches.TblRecord" />
</EntityContainer>
<EntityType Name="TblRecord">
<Key>
<PropertyRef Name="Record" />
</Key>
<Property Name="Record" Type="String" Nullable="false" MaxLength="100" Unicode="true" FixedLength="false" />
<Property Name="Relations" Type="String" MaxLength="450" Unicode="true" FixedLength="false" />
</EntityType>
</Schema>
</edmx:ConceptualModels>
<!-- C-S mapping content -->
<edmx:Mappings>
<Mapping Space="C-S" xmlns="http://schemas.microsoft.com/ado/2009/11/mapping/cs">
<EntityContainerMapping StorageEntityContainer="XzBusinessMatchesStoreContainer" CdmEntityContainer="RecordzEntities">
<EntitySetMapping Name="Records">
<EntityTypeMapping TypeName="Xz.Business.Matches.TblRecord">
<MappingFragment StoreEntitySet="Records">
<ScalarProperty Name="Record" ColumnName="Record" />
<ScalarProperty Name="Relations" ColumnName="Relations" />
</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/2009/11/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>
This is EF5 & VS12
If you're renamed the table in the DB you will need to update the mapping in the EDMX. The error message is self describing.
Failing that you could just delete the model TblRecord from the edmx designer and re-add it with the new name Record.
Related
I have a Entity Framework 5 Model First project, with the following tables:
Extension
Id : Int32, PK
Number: String
User
Id: Int32, PK
Name: String
UserExtensionMap
UserId : Int32 (FK -> User.Id), PK
ExtensionId : Int32 (FK -> Extension.Id), PK
When setting the above tables and associations to UserExtensionMap I get the error that UserId and ExtensionId are not mapped.
So I right click on UserExtensionMap table and select table mapping and get the following screen
I can set the maps for Users.Id to UserExtensionUser.Id and Extensions.Id to UserExtension.ExtensionId but there is nothing to map the Extensions.Number and User.Username to - I am confused!
I get with the error when trying to compile:
Error 3024: Problem in mapping fragments starting at line 119:Must specify mapping for all key properties (UserExtensionMaps.ExtensionId, UserExtensionMaps.UserId) of the EntitySet UserExtensionMaps.
When i delete these above maps for UserExtensionMap i get the error:
Error 3027: No mapping specified for the following EntitySet/AssociationSet - UserExtensionMaps.
My model XML file is below:
<?xml version="1.0" encoding="utf-8"?>
<edmx:Edmx Version="3.0" xmlns:edmx="http://schemas.microsoft.com/ado/2009/11/edmx">
<!-- EF Runtime content -->
<edmx:Runtime>
<!-- SSDL content -->
<edmx:StorageModels>
<Schema Namespace="Server.Store" Alias="Self" Provider="System.Data.SqlServerCe.4.0" ProviderManifestToken="4.0" xmlns:store="http://schemas.microsoft.com/ado/2007/12/edm/EntityStoreSchemaGenerator" xmlns="http://schemas.microsoft.com/ado/2009/11/edm/ssdl">
<EntityContainer Name="ServerStoreContainer">
<EntitySet Name="Users" EntityType="Server.Store.Users" store:Type="Tables" Schema="dbo" />
<EntitySet Name="Extensions" EntityType="Server.Store.Extensions" store:Type="Tables" Schema="dbo" />
</EntityContainer>
<EntityType Name="Users">
<Key>
<PropertyRef Name="Id" />
</Key>
<Property Name="Id" Type="int" StoreGeneratedPattern="Identity" Nullable="false" />
<Property Name="Username" Type="nvarchar" Nullable="false" />
</EntityType>
<EntityType Name="Extensions">
<Key>
<PropertyRef Name="Id" />
</Key>
<Property Name="Id" Type="int" StoreGeneratedPattern="Identity" Nullable="false" />
<Property Name="Number" Type="nvarchar" Nullable="false" />
</EntityType>
</Schema></edmx:StorageModels>
<!-- CSDL content -->
<edmx:ConceptualModels>
<Schema Namespace="Server" Alias="Self" p1:UseStrongSpatialTypes="false" xmlns:annotation="http://schemas.microsoft.com/ado/2009/02/edm/annotation" xmlns:p1="http://schemas.microsoft.com/ado/2009/02/edm/annotation" xmlns="http://schemas.microsoft.com/ado/2009/11/edm">
<EntityContainer Name="ServerEntities" p1:LazyLoadingEnabled="true" >
<EntitySet Name="Users" EntityType="Server.User" />
<EntitySet Name="Extensions" EntityType="Server.Extension" />
<EntitySet Name="UserExtensionMaps" EntityType="Server.UserExtensionMap" />
<AssociationSet Name="ExtensionUserExtensionMap" Association="Server.ExtensionUserExtensionMap">
<End Role="Extension" EntitySet="Extensions" />
<End Role="UserExtensionMap" EntitySet="UserExtensionMaps" />
</AssociationSet>
<AssociationSet Name="UserUserExtensionMap" Association="Server.UserUserExtensionMap">
<End Role="User" EntitySet="Users" />
<End Role="UserExtensionMap" EntitySet="UserExtensionMaps" />
</AssociationSet>
</EntityContainer>
<EntityType Name="User">
<Key>
<PropertyRef Name="Id" />
</Key>
<Property Type="Int32" Name="Id" Nullable="false" annotation:StoreGeneratedPattern="Identity" />
<Property Type="String" Name="Username" Nullable="false" />
<NavigationProperty Name="UserExtensionMaps" Relationship="Server.UserUserExtensionMap" FromRole="User" ToRole="UserExtensionMap" />
</EntityType>
<EntityType Name="Extension">
<Key>
<PropertyRef Name="Id" />
</Key>
<Property Type="Int32" Name="Id" Nullable="false" annotation:StoreGeneratedPattern="Identity" />
<Property Type="String" Name="Number" Nullable="false" />
<NavigationProperty Name="UserExtensionMaps" Relationship="Server.ExtensionUserExtensionMap" FromRole="Extension" ToRole="UserExtensionMap" />
</EntityType>
<EntityType Name="UserExtensionMap" >
<Key>
<PropertyRef Name="ExtensionId" />
<PropertyRef Name="UserId" />
</Key>
<NavigationProperty Name="Extension" Relationship="Server.ExtensionUserExtensionMap" FromRole="UserExtensionMap" ToRole="Extension" />
<Property Type="Int32" Name="ExtensionId" Nullable="false" />
<NavigationProperty Name="User" Relationship="Server.UserUserExtensionMap" FromRole="UserExtensionMap" ToRole="User" />
<Property Type="Int32" Name="UserId" Nullable="false" />
</EntityType>
<Association Name="ExtensionUserExtensionMap">
<End Type="Server.Extension" Role="Extension" Multiplicity="1" />
<End Type="Server.UserExtensionMap" Role="UserExtensionMap" Multiplicity="*" />
<ReferentialConstraint>
<Principal Role="Extension">
<PropertyRef Name="Id" />
</Principal>
<Dependent Role="UserExtensionMap">
<PropertyRef Name="ExtensionId" />
</Dependent>
</ReferentialConstraint>
</Association>
<Association Name="UserUserExtensionMap">
<End Type="Server.User" Role="User" Multiplicity="1" />
<End Type="Server.UserExtensionMap" Role="UserExtensionMap" Multiplicity="*" />
<ReferentialConstraint>
<Principal Role="User">
<PropertyRef Name="Id" />
</Principal>
<Dependent Role="UserExtensionMap">
<PropertyRef Name="UserId" />
</Dependent>
</ReferentialConstraint>
</Association>
</Schema>
</edmx:ConceptualModels>
<!-- C-S mapping content -->
<edmx:Mappings>
<Mapping Space="C-S" xmlns="http://schemas.microsoft.com/ado/2009/11/mapping/cs">
<EntityContainerMapping StorageEntityContainer="ServerStoreContainer" CdmEntityContainer="ServerEntities">
<EntitySetMapping Name="Users">
<EntityTypeMapping TypeName="IsTypeOf(Server.User)">
<MappingFragment StoreEntitySet="Users">
<ScalarProperty Name="Id" ColumnName="Id" />
<ScalarProperty Name="Username" ColumnName="Username" />
</MappingFragment>
</EntityTypeMapping>
</EntitySetMapping>
<EntitySetMapping Name="Extensions">
<EntityTypeMapping TypeName="IsTypeOf(Server.Extension)">
<MappingFragment StoreEntitySet="Extensions">
<ScalarProperty Name="Id" ColumnName="Id" />
<ScalarProperty Name="Number" ColumnName="Number" />
</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/2009/11/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>
I could not see the table mapping fields until I generated the database code right click model -> Generate Database from model, after doing this the mappings were OK.
Not sure if this is a bug or not, but it is repeatable and does fix the issue.
I am developing MVC 3 Applicaiton.
I have Model first approch.
I have Company Entity(Abstract).
Lead and Customer is inherited from the company entity.
When I tried to validate the model, Its gives an errror.
Error 41 Error 3023: Problem in mapping fragments starting at line
70:Column Companies.Status in table Companies must be mapped: It has
no default value and is not nullable.
Here is the mapping of tables.
And Here is the EDMX code in HTML View.
<?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="Model1.Store" Alias="Self" Provider="System.Data.SqlClient" ProviderManifestToken="2008" xmlns="http://schemas.microsoft.com/ado/2009/02/edm/ssdl" xmlns:store="http://schemas.microsoft.com/ado/2007/12/edm/EntityStoreSchemaGenerator">
<EntityContainer Name="Model1StoreContainer">
<EntitySet Name="Companies" EntityType="Model1.Store.Companies" store:Type="Tables" Schema="dbo" />
</EntityContainer>
<EntityType Name="Companies">
<Key>
<PropertyRef Name="Id" />
</Key>
<Property Name="Id" Type="int" StoreGeneratedPattern="Identity" Nullable="false" />
<Property Name="Name" Type="nvarchar(max)" Nullable="false" />
<Property Name="Status" Type="nvarchar(max)" Nullable="false" />
<Property Name="__Disc__" Type="nvarchar" MaxLength="Max" Nullable="false" />
</EntityType>
</Schema></edmx:StorageModels>
<!-- CSDL content -->
<edmx:ConceptualModels>
<Schema xmlns="http://schemas.microsoft.com/ado/2008/09/edm" xmlns:cg="http://schemas.microsoft.com/ado/2006/04/codegeneration" xmlns:store="http://schemas.microsoft.com/ado/2007/12/edm/EntityStoreSchemaGenerator" Namespace="Model1" Alias="Self" xmlns:annotation="http://schemas.microsoft.com/ado/2009/02/edm/annotation">
<EntityContainer Name="Model1Container" annotation:LazyLoadingEnabled="true">
<EntitySet Name="Companies" EntityType="Model1.Company" />
</EntityContainer>
<EntityType Name="Company" Abstract="true">
<Key>
<PropertyRef Name="Id" />
</Key>
<Property Type="Int32" Name="Id" Nullable="false" annotation:StoreGeneratedPattern="Identity" />
<Property Type="String" Name="Name" Nullable="false" />
</EntityType>
<EntityType Name="Lead" BaseType="Model1.Company" >
<Property Type="String" Name="Status" Nullable="false" />
</EntityType>
</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="Model1StoreContainer" CdmEntityContainer="Model1Container">
<EntitySetMapping Name="Companies">
<EntityTypeMapping TypeName="IsTypeOf(Model1.Company)">
<MappingFragment StoreEntitySet="Companies">
<ScalarProperty Name="Id" ColumnName="Id" />
<ScalarProperty Name="Name" ColumnName="Name" />
<Condition ColumnName="__Disc__" Value="Company" />
</MappingFragment>
</EntityTypeMapping>
<EntityTypeMapping TypeName="Model1.Lead">
<MappingFragment StoreEntitySet="Companies">
<ScalarProperty Name="Id" ColumnName="Id" />
<ScalarProperty Name="Name" ColumnName="Name" />
<ScalarProperty Name="Status" ColumnName="Status" />
<Condition ColumnName="__Disc__" Value="Lead" />
</MappingFragment>
</EntityTypeMapping>
</EntitySetMapping>
</EntityContainerMapping>
</Mapping></edmx:Mappings>
</edmx:Runtime>
<!-- EF Designer content (DO NOT EDIT MANUALLY BELOW HERE) -->
<edmx:Designer xmlns="http://schemas.microsoft.com/ado/2008/10/edmx">
<edmx:Connection>
<DesignerInfoPropertySet>
<DesignerProperty Name="MetadataArtifactProcessing" Value="EmbedInOutputAssembly" />
</DesignerInfoPropertySet>
</edmx:Connection>
<edmx:Options>
<DesignerInfoPropertySet>
<DesignerProperty Name="ValidateOnBuild" Value="true" />
<DesignerProperty Name="EnablePluralization" Value="True" />
<DesignerProperty Name="DatabaseGenerationWorkflow" Value="$(VSEFTools)\DBGen\Generate T-SQL Via T4 (TPH).xaml" />
</DesignerInfoPropertySet>
</edmx:Options>
<!-- Diagram content (shape and connector positions) -->
<edmx:Diagrams>
<Diagram Name="Model1" >
<EntityTypeShape EntityType="Model1.Company" Width="1.5" PointX="2.375" PointY="0.875" Height="1.2636116536458335" />
<EntityTypeShape EntityType="Model1.Lead" Width="1.5" PointX="3.375" PointY="2.625" Height="1.0992643229166665" />
<InheritanceConnector EntityType="Model1.Lead" >
<ConnectorPoint PointX="3.125" PointY="2.1386116536458335" />
<ConnectorPoint PointX="3.125" PointY="2.325" />
<ConnectorPoint PointX="4.125" PointY="2.325" />
<ConnectorPoint PointX="4.125" PointY="2.625" />
</InheritanceConnector>
</Diagram>
</edmx:Diagrams>
</edmx:Designer>
</edmx:Edmx>
Whats is the issue ?
Put the DefaultValue attribute on the SSDL Status property. It would look like this (I used the empty string):
<Property Name="Status" Type="nvarchar(max)" Nullable="false" DefaultValue=""/>
Since the base entity is abstract you won't be able to create entities of this type so this DefaultValue will not really be used but it should make EF stop complaining.
In your storage model, the Companies.Status column doesn't allow null values.
Since all entities that inherit from Company except the Lead entity will not have the Status property set, you need to either allow null in the Companies.Status column or set a default value to use for the other entities.
I have a problem where I've mapped a stored procedure named sp_getMyEntity, which takes in one parameter called Id and then maps the results to a custom entity called MyEntity
I'm using mock data to illustrate the point. When I run the stored procedure with an id of 1, I get two distinct results back from the database:
exec [dbo].[sp_getMyEntity] #Id=1
Results:
ID - AddressId
1 - 6
1 - 3
When querying the ObjectContext using LINQ, I get 2 MyEntity's back but the AddressId for both of them is 6, not 6 and 3 respectively. Here is my call using LINQ:
Entities context = new Entities();
var entities = from s in context.GetMyEntity(1)
select s;
return entities.ToList();
Here is the EDMX xml:
<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="MyProjectModel.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="MyProjectModelStoreContainer">
<EntitySet Name="MyEntitySet" EntityType="MyProjectModel.Store.MyEntity" />
</EntityContainer>
<Function Name="sp_getMyEntity" Aggregate="false" BuiltIn="false" NiladicFunction="false" IsComposable="false" ParameterTypeSemantics="AllowImplicitConversion" Schema="dbo">
<Parameter Name="Id" Type="int" Mode="In" />
</Function>
<EntityType Name="MyEntity">
<Key>
<PropertyRef Name="Id" />
</Key>
<Property Name="Id" Type="int" Nullable="false" />
<Property Name="AddressId" Type="int" Nullable="true" />
</EntityType>
</Schema>
</edmx:StorageModels>
<!-- CSDL content -->
<edmx:ConceptualModels>
<Schema Namespace="MyProjectModel" Alias="Self" xmlns="http://schemas.microsoft.com/ado/2006/04/edm">
<EntityContainer Name="MyProjectViewEntities" >
<EntitySet Name="MyEntitySet" EntityType="MyProjectModel.MyEntity" />
<FunctionImport Name="GetMyEntity" EntitySet="MyEntitySet" ReturnType="Collection(MyProjectModel.MyEntity)">
<Parameter Name="Id" Mode="In" Type="Int32" />
</FunctionImport>
</EntityContainer>
<EntityType Name="MyEntity">
<Key>
<PropertyRef Name="Id" />
</Key>
<Property Name="Id" Type="Int32" Nullable="false" />
<Property Name="AddressId" Type="Int32" Nullable="true" />
</EntityType>
</Schema>
</edmx:ConceptualModels>
<!-- C-S mapping content -->
<edmx:Mappings>
<Mapping Space="C-S" xmlns="urn:schemas-microsoft-com:windows:storage:mapping:CS">
<EntityContainerMapping StorageEntityContainer="MyProjectModelStoreContainer" CdmEntityContainer="MyProjectViewEntities" >
<FunctionImportMapping FunctionImportName="GetMyEntity" FunctionName="MyProjectModel.Store.sp_getMyEntity" />
<EntitySetMapping Name="MyEntitySet">
<EntityTypeMapping TypeName="IsTypeOf(MyProjectModel.MyEntity)">
<MappingFragment StoreEntitySet="MyEntitySet">
<ScalarProperty Name="AddressId" ColumnName="AddressId" />
<ScalarProperty Name="Id" ColumnName="Id" />
</MappingFragment>
</EntityTypeMapping>
</EntitySetMapping>
</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="MyProjectModel" ZoomLevel="100" >
<EntityTypeShape EntityType="MyProjectModel.MyEntity" Width="1.5" PointX="5.25" PointY="0.5" Height="7.8375048828125" />
<EntityTypeShape EntityType="MyProjectModel.MyEntity" Width="1.5" PointX="5.5" PointY="1.375" Height="1.2636116536458335" /></Diagram></edmx:Diagrams>
</edmx:Designer>
</edmx:Edmx>
Any ideas why the MyEntity's are not unique?
Because the SP column which your SSDL identifies as the key is not a unique column. You cannot have a "key" with duplicate values.
As Craig stated above my Key property was not unique, so I ended up changing the SQL to look at follows:
SELECT
ROW_NUMBER() OVER(ORDER BY Id) AS KeyId
, Id
, AddressId
FROM
MyTable
WHERE
Id = #Id
Then the EDMX xml looks as follows, notice the new key is a bigint and Int64:
<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="MyProjectModel.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="MyProjectModelStoreContainer">
<EntitySet Name="MyEntitySet" EntityType="MyProjectModel.Store.MyEntity" />
</EntityContainer>
<Function Name="sp_getMyEntity" Aggregate="false" BuiltIn="false" NiladicFunction="false" IsComposable="false" ParameterTypeSemantics="AllowImplicitConversion" Schema="dbo">
<Parameter Name="Id" Type="int" Mode="In" />
</Function>
<EntityType Name="MyEntity">
<Key>
<PropertyRef Name="KeyId" />
</Key>
<Property Name="KeyId" Type="bigint" Nullable="false" />
<Property Name="Id" Type="int" Nullable="false" />
<Property Name="AddressId" Type="int" Nullable="true" />
</EntityType>
</Schema>
</edmx:StorageModels>
<!-- CSDL content -->
<edmx:ConceptualModels>
<Schema Namespace="MyProjectModel" Alias="Self" xmlns="http://schemas.microsoft.com/ado/2006/04/edm">
<EntityContainer Name="MyProjectViewEntities" >
<EntitySet Name="MyEntitySet" EntityType="MyProjectModel.MyEntity" />
<FunctionImport Name="GetMyEntity" EntitySet="MyEntitySet" ReturnType="Collection(MyProjectModel.MyEntity)">
<Parameter Name="Id" Mode="In" Type="Int32" />
</FunctionImport>
</EntityContainer>
<EntityType Name="MyEntity">
<Key>
<PropertyRef Name="KeyId" />
</Key>
<Property Name="KeyId" Type="Int64" Nullable="false" />
<Property Name="Id" Type="Int32" Nullable="false" />
<Property Name="AddressId" Type="Int32" Nullable="true" />
</EntityType>
</Schema>
</edmx:ConceptualModels>
<!-- C-S mapping content -->
<edmx:Mappings>
<Mapping Space="C-S" xmlns="urn:schemas-microsoft-com:windows:storage:mapping:CS">
<EntityContainerMapping StorageEntityContainer="MyProjectModelStoreContainer" CdmEntityContainer="MyProjectViewEntities" >
<FunctionImportMapping FunctionImportName="GetMyEntity" FunctionName="MyProjectModel.Store.sp_getMyEntity" />
<EntitySetMapping Name="MyEntitySet">
<EntityTypeMapping TypeName="IsTypeOf(MyProjectModel.MyEntity)">
<MappingFragment StoreEntitySet="MyEntitySet">
<ScalarProperty Name="AddressId" ColumnName="AddressId" />
<ScalarProperty Name="Id" ColumnName="Id" />
<ScalarProperty Name="KeyId" ColumnName="KeyId" />
</MappingFragment>
</EntityTypeMapping>
</EntitySetMapping>
</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="MyProjectModel" ZoomLevel="100" >
<EntityTypeShape EntityType="MyProjectModel.MyEntity" Width="1.5" PointX="5.25" PointY="0.5" Height="7.8375048828125" />
<EntityTypeShape EntityType="MyProjectModel.MyEntity" Width="1.5" PointX="5.5" PointY="1.375" Height="1.2636116536458335" /></Diagram></edmx:Diagrams>
</edmx:Designer>
</edmx:Edmx>
I'm trying to do a Table Per Hierarchy model in Entity Framework(VS 2008 sp1, 3.5).
Most of my models have been very simple, an abstract type with multiple sub-types that inherit from it.
However, I've been struggling with this latest challenge. I have STUDENTS that I'd like to inherit from PERSONS(abstract) that should inherity from PARTIES(abstract).
Every time I do this I get a "Error 2078: The EntityType 'Model.PERSONS' is Abstract and can be mapped only using IsTypeOf." I guess the problem is PARTIES is already defined as IsTypeOf in the entity set.
So is this even possible? I can work around it by making PERSONS abstract = false and assigning a bogus conditional mapping. But this seems like a silly workaround.
Edit the model using XML Editor: find the mapping and add IsTypeOf to the corresponding EntityTypeMapping tag.
Here is an example resembling your case:
SQL Server DDL:
CREATE TABLE [dbo].[Student] (
[Id] [int] IDENTITY(1,1) NOT NULL,
[PartyInfo] [varchar](max) NOT NULL,
[PersonInfo] [varchar](max) NOT NULL,
[StudInfo] [varchar](max) NOT NULL,
CONSTRAINT [PK_Student] PRIMARY KEY CLUSTERED ( [Id] ASC )
)
EDMX:
<?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="test_1Model.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/2006/04/edm/ssdl">
<EntityContainer Name="test_1ModelStoreContainer">
<EntitySet Name="Student" EntityType="test_1Model.Store.Student"
store:Type="Tables" Schema="dbo" />
</EntityContainer>
<EntityType Name="Student">
<Key>
<PropertyRef Name="Id" />
</Key>
<Property Name="Id" Type="int" Nullable="false"
StoreGeneratedPattern="Identity" />
<Property Name="PartyInfo" Type="varchar(max)" Nullable="false" />
<Property Name="PersonInfo" Type="varchar(max)" Nullable="false" />
<Property Name="StudInfo" Type="varchar(max)" Nullable="false" />
</EntityType>
</Schema>
</edmx:StorageModels>
<!-- CSDL content -->
<edmx:ConceptualModels>
<Schema Namespace="test_1Model" Alias="Self"
xmlns="http://schemas.microsoft.com/ado/2006/04/edm">
<EntityContainer Name="test_Entities">
<EntitySet Name="PartySet" EntityType="test_1Model.Party" />
</EntityContainer>
<EntityType Name="Party" Abstract="true">
<Key>
<PropertyRef Name="Id" />
</Key>
<Property Name="Id" Type="Int32" Nullable="false" />
<Property Name="PartyInfo" Type="String" Nullable="false"
MaxLength="Max" Unicode="false" FixedLength="false" />
</EntityType>
<EntityType Name="Person" BaseType="test_1Model.Party" Abstract="true" >
<Property Name="PersonInfo" Type="String" Nullable="false" />
</EntityType>
<EntityType Name="Student" BaseType="test_1Model.Person" >
<Property Name="StudInfo" Type="String" Nullable="false" />
</EntityType>
</Schema>
</edmx:ConceptualModels>
<!-- C-S mapping content -->
<edmx:Mappings>
<Mapping Space="C-S"
xmlns="urn:schemas-microsoft-com:windows:storage:mapping:CS">
<EntityContainerMapping
StorageEntityContainer="test_1ModelStoreContainer"
CdmEntityContainer="test_Entities">
<EntitySetMapping Name="PartySet">
<EntityTypeMapping TypeName="IsTypeOf(test_1Model.Party)">
<MappingFragment StoreEntitySet="Student">
<ScalarProperty Name="PartyInfo" ColumnName="PartyInfo" />
<ScalarProperty Name="Id" ColumnName="Id" />
</MappingFragment>
</EntityTypeMapping>
<EntityTypeMapping TypeName="IsTypeOf(test_1Model.Person)">
<MappingFragment StoreEntitySet="Student">
<ScalarProperty Name="Id" ColumnName="Id" />
<ScalarProperty Name="PersonInfo" ColumnName="PersonInfo" />
</MappingFragment>
</EntityTypeMapping>
<EntityTypeMapping TypeName="test_1Model.Student">
<MappingFragment StoreEntitySet="Student">
<ScalarProperty Name="PartyInfo" ColumnName="PartyInfo" />
<ScalarProperty Name="PersonInfo" ColumnName="PersonInfo" />
<ScalarProperty Name="Id" ColumnName="Id" />
<ScalarProperty Name="StudInfo" ColumnName="StudInfo" />
</MappingFragment>
</EntityTypeMapping>
</EntitySetMapping>
</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="SqlServer_Model" />
</edmx:Diagrams>
</edmx:Designer>
</edmx:Edmx>
I've got a project in written in the EDM. Does anyone know how to get the value of the discriminator column from an entity in a TPH inheritance tree? I can't add the property to the entity. Is there any other way to get the value?
Thanks,
Roy
There is a simple way to solve the problem for the DBMS that suports updatable views.
You can simply create a view or a Defining Query having an additional discriminator column.
The original column should be mapped to the class property. In case when DBMS does not support the updatable views you can use Defining Query and then map stored procedures for Insert/Update/Delete operations.
Here is an example for Oracle database:
SQL:
CREATE TABLE TEST.TPH_TABLE (
ID NUMBER(9),
COLUMN_A VARCHAR2(20),
COLUMN_B VARCHAR2(20),
BASE_COLUMN VARCHAR2(20),
CONSTRAINT PK_TPH_TABLE PRIMARY KEY (ID)
);
EDMX:
<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="Model1.Store" Alias="Self" Provider="Devart.Data.Oracle" ProviderManifestToken="ORA" xmlns:store="http://schemas.microsoft.com/ado/2007/12/edm/EntityStoreSchemaGenerator" xmlns="http://schemas.microsoft.com/ado/2006/04/edm/ssdl">
<EntityContainer Name="Model1StoreContainer">
<EntitySet Name="TPH_TABLE" EntityType="Model1.Store.TPH_TABLE" >
<DefiningQuery>
SELECT ID, BASE_COLUMN, COLUMN_A, COLUMN_B,
CASE WHEN COLUMN_A IS NOT NULL THEN '1' ELSE NULL END AS "IS_TABLE_A"
FROM TPH_TABLE
</DefiningQuery>
</EntitySet>
</EntityContainer>
<EntityType Name="TPH_TABLE">
<Key>
<PropertyRef Name="ID" />
</Key>
<Property Name="ID" Type="int" Nullable="false" />
<Property Name="BASE_COLUMN" Type="VARCHAR2" MaxLength="20" />
<Property Name="COLUMN_A" Type="VARCHAR2" MaxLength="20" />
<Property Name="COLUMN_B" Type="VARCHAR2" MaxLength="20" />
<Property Name="IS_TABLE_A" Type="VARCHAR2" MaxLength="1" />
</EntityType>
</Schema>
</edmx:StorageModels>
<!-- CSDL content -->
<edmx:ConceptualModels>
<Schema Namespace="Model1" Alias="Self" xmlns="http://schemas.microsoft.com/ado/2006/04/edm">
<EntityContainer Name="Entities">
<EntitySet Name="TPH_TABLE" EntityType="Model1.TPH_TABLE" />
</EntityContainer>
<EntityType Name="TPH_TABLE" Abstract="true">
<Key>
<PropertyRef Name="ID" />
</Key>
<Property Name="ID" Type="Int32" Nullable="false" />
<Property Name="BASE_COLUMN" Type="String" MaxLength="20" Unicode="true" FixedLength="false" />
</EntityType>
<EntityType Name="TABLE_A" BaseType="Model1.TPH_TABLE" >
<Property Name="COLUMN_A" Type="String" Nullable="true" />
</EntityType>
<EntityType Name="TABLE_B" BaseType="Model1.TPH_TABLE" >
<Property Name="COLUMN_B" Type="String" Nullable="true" />
</EntityType>
</Schema>
</edmx:ConceptualModels>
<!-- C-S mapping content -->
<edmx:Mappings>
<Mapping Space="C-S" xmlns="urn:schemas-microsoft-com:windows:storage:mapping:CS">
<EntityContainerMapping StorageEntityContainer="Model1StoreContainer" CdmEntityContainer="Entities">
<EntitySetMapping Name="TPH_TABLE">
<EntityTypeMapping TypeName="Model1.TABLE_A">
<MappingFragment StoreEntitySet="TPH_TABLE">
<ScalarProperty Name="ID" ColumnName="ID" />
<ScalarProperty Name="BASE_COLUMN" ColumnName="BASE_COLUMN" />
<ScalarProperty Name="COLUMN_A" ColumnName="COLUMN_A" />
<Condition ColumnName="IS_TABLE_A" Value="1" />
</MappingFragment>
</EntityTypeMapping>
<EntityTypeMapping TypeName="Model1.TABLE_B">
<MappingFragment StoreEntitySet="TPH_TABLE">
<ScalarProperty Name="ID" ColumnName="ID" />
<ScalarProperty Name="BASE_COLUMN" ColumnName="BASE_COLUMN" />
<ScalarProperty Name="COLUMN_B" ColumnName="COLUMN_B" />
<Condition ColumnName="IS_TABLE_A" IsNull="true" />
</MappingFragment>
</EntityTypeMapping>
</EntitySetMapping>
</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="Model4">
<EntityTypeShape EntityType="Model1.TPH_TABLE" Width="1.5" PointX="3" PointY="0.5" Height="1.2636116536458335" IsExpanded="true" />
<EntityTypeShape EntityType="Model1.TABLE_A" Width="1.5" PointX="1.75" PointY="2.75" Height="1.099264322916667" />
<EntityTypeShape EntityType="Model1.TABLE_B" Width="1.5" PointX="4.25" PointY="2.75" Height="1.099264322916667" />
<InheritanceConnector EntityType="Model1.TABLE_B" ManuallyRouted="false">
<ConnectorPoint PointX="4.375" PointY="1.7636116536458335" />
<ConnectorPoint PointX="4.375" PointY="2.75" />
</InheritanceConnector>
<InheritanceConnector EntityType="Model1.TABLE_A" ManuallyRouted="false">
<ConnectorPoint PointX="3.125" PointY="1.7636116536458335" />
<ConnectorPoint PointX="3.125" PointY="2.75" />
</InheritanceConnector></Diagram></edmx:Diagrams>
</edmx:Designer>
</edmx:Edmx>