T4 relationship generation - entity-framework

Question

suppose I have the following tables and relations:
CREATE TABLE [dbo].[Customers] (
[CustomerID] [int] IDENTITY(1,1) NOT NULL,
[Description] [nvarchar](255) NOT NULL
CONSTRAINT [PK_Customers] PRIMARY KEY CLUSTERED ([CustomerID] ASC)
CREATE TABLE [dbo].[Orders](
[OrderID] [int] IDENTITY(1,1) NOT NULL,
[CustomerID] [int] NOT NULL,
...
CONSTRAINT [PK_Orders] PRIMARY KEY CLUSTERED ([OrderID] ASC)
ALTER TABLE [dbo].[Orders] WITH CHECK ADD CONSTRAINT [FK_Orders_Customers]
FOREIGN KEY([CustomerID]) REFERENCES [dbo].[Customers] ([CustomerID])
I am using some T4 templates to generate simple POCO classes with a property for each database column. This is very easy and really funny. In fact, the code I have is able to generate a single class for each table like in the following sample
public class Customer {
public int CustomerID { get; set; }
public string Description { get; set; }
}
I would like now to also create code that maps relationship between tables (1-N, 1-1) so to obtain, for example a class like this one
public class Customer {
public int CustomerID { get; set; }
public string Description { get; set; }
public IList<Order> Orders { get; set; }
}
Unfortunately my code does not work. Here it is:
foreach ( NavigationProperty navProperty in entity.NavigationProperties.Where( p => p.DeclaringType == entity ) ) {
string elementType = ((EntityType)( (RefType)navProperty.ToEndMember.TypeUsage.EdmType ).ElementType).Name;
string relationshipName = navProperty.ToEndMember.DeclaringType.FullName;
string targetRoleName = navProperty.ToEndMember.Name;
if ( navProperty.ToEndMember.RelationshipMultiplicity == RelationshipMultiplicity.Many ) {
<#=Accessibility.ForProperty( navProperty ) #> IList<<#=navProperty.Name#>> <#=navProperty.Name#> { get; set; }
}
}
Unfortunately this generate code like this one:
public class Customer {
public int CustomerID { get; set; }
public string Description { get; set; }
public IList<Orders> Orders { get; set; } // NOTE THE PLURAL IN THE TYPE NAME!!!
}
which is the entity set name not the entity name. What I have to do to solve this problem?
NOTE: I am using EF for the .NET 3.5 version. Also I am including the EF.Utility.CS.ttinclude available in Visual Studio 10.

Answer 1

Found the solution. This is the correct code:
foreach ( NavigationProperty navProperty in entity.NavigationProperties.Where( p => p.DeclaringType == entity ) ) {
string elementType = ((EntityType)( (RefType)navProperty.ToEndMember.TypeUsage.EdmType ).ElementType).Name;
if ( navProperty.ToEndMember.RelationshipMultiplicity == RelationshipMultiplicity.Many ) {
<#=Accessibility.ForProperty( navProperty ) #> IList<<#= elementType #>> <#=navProperty.Name#> { get; set; }
}
}

Answer 2

Instead of using
navProperty.name
inside of your list declaration
Can you use
navProperty.ToEndMember
Through that property I think you should be able to find the real non-pluralized class name