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POEntity Framework 4 - TPT Inheritance in Features CTP5 (code first): rename foreign key column on inherited table
 

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  1. POEntity Framework 4 - TPT Inheritance in Features CTP5 (code first): rename foreign key column on inherited table
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    <p>I'm trying to convert an xml Entity Framework model to Code First (CTP5) one. I have to model a hierarchy which fits quite well the TPT pattern. The only problem I have is that the primary key/foreign key of the "inheriting" table has a different name from the primary key of the base class.</p> <p>These are the relevant fields of the involved tables</p> <pre><code>CREATE TABLE site.Domains ( ID INT NOT NULL PRIMARY KEY, Domain NVARCHAR(128) NOT NULL ) CREATE TABLE site.MainSites ( FKDomainID INT NOT NULL PRIMARY KEY REFERENCES site.Domains(ID) ) CREATE TABLE site.SisterSites ( FKDomainID INT NOT NULL PRIMARY KEY REFERENCES site.Domains(ID) ) </code></pre> <p>this is the code we're using when we build the model</p> <pre><code>var domain = modelBuilder.Entity&lt;Domain&gt;(); domain.HasKey(c =&gt; c.Id) .ToTable("Domains", "site"); domain.Property(c =&gt; c.DomainName) .HasColumnName("Domain") .HasMaxLength(128) .IsRequired(); domain.Ignore(c =&gt; c.OldId); var mainSite = modelBuilder.Entity&lt;MainSite&gt;(); mainSite.Map(m =&gt; { m.ToTable("MainSites", "site"); }); var sisterSite = modelBuilder.Entity&lt;SisterSite&gt;(); sisterSite.Map(m =&gt; { m.ToTable("SisterSites", "site"); }); </code></pre> <p>and this is the generated sql we get</p> <pre><code>SELECT [Limit1].[C2] AS [C1], [Limit1].[C1] AS [C2], [Limit1].[Domain] AS [Domain] FROM ( SELECT TOP (2) [UnionAll1].[Id] AS [C1], [Extent3].[Domain] AS [Domain], CASE WHEN ([UnionAll1].[C1] = 1) THEN ''0X0X'' ELSE ''0X1X'' END AS [C2] FROM (SELECT [Extent1].[Id] AS [Id], cast(1 as bit) AS [C1] FROM [site].[MainSites] AS [Extent1] UNION ALL SELECT [Extent2].[Id] AS [Id], cast(0 as bit) AS [C1] FROM [site].[SisterSites] AS [Extent2]) AS [UnionAll1] INNER JOIN [site].[Domains] AS [Extent3] ON [UnionAll1].[Id] = [Extent3].[Id] WHERE [UnionAll1].[Id] = @p__linq__0 ) AS [Limit1]',N'@p__linq__0 int',@p__linq__0=1 </code></pre> <p>As you can see, it looks for site.MainSites.Id and site.SisterSites.Id which do not exist. I even tried something like</p> <pre><code>mainSite.Property(m =&gt; m.Id).HasColumnName("FKDomainID"); </code></pre> <p>but, as you can guess, it didn't work.</p> <p>Any suggestion?</p> <p>Thanks in advance</p>
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