Databases
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Postsdbo
PO
 

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  1. PO
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    <p>Change your config like this:</p> <pre><code>public class MainHierarchyLevelConfiguration : EntityTypeConfiguration&lt;MainHierarchyLevel&gt; { public MainHierarchyLevelConfiguration() { Map(mb =&gt; { mb.MapInheritedProperties(); mb.ToTable("MainHierarchyLevels"); }); } } public class MainHierarchyItemsConfiguration : EntityTypeConfiguration&lt;MainHierarchyItem&gt; { public MainHierarchyItemsConfiguration() { Map(mb =&gt; { mb.MapInheritedProperties(); mb.ToTable("MainHierarchyItems"); }); HasKey(hierarchyItem =&gt; hierarchyItem.Id); HasRequired(hierarchyItem =&gt; hierarchyItem.Level).WithMany().Map(e =&gt; e.MapKey("Level_Id")); } } public class HierarchyContext : DbContext { public DbSet&lt;MainHierarchyLevel&gt; MainHierarchyLevels { get; set; } public DbSet&lt;MainHierarchyItem&gt; MainHierarchyItems { get; set; } protected override void OnModelCreating(DbModelBuilder modelBuilder) { base.OnModelCreating(modelBuilder); modelBuilder.Configurations.Add(new MainHierarchyLevelConfiguration()); modelBuilder.Configurations.Add(new MainHierarchyItemsConfiguration()); } } </code></pre> <p>When running the following test program, 2 tables will be created - one for each of the two concrete classes MainHierarchyLevel and MainHierarchyItem.</p> <pre><code>using (var db = new HierarchyContext()) { var level = new MainHierarchyLevel { Name = "Level1" }; level = db.MainHierarchyLevels.Add(level); var mh = new MainHierarchyItem { Name = "m1", Description = "m1 desc", Level = level }; db.MainHierarchyItems.Add(mh); db.SaveChanges(); var query = from m in db.MainHierarchyItems orderby m.Name select m; Console.WriteLine("All mains in the database:"); foreach (var item in query) { Console.WriteLine(item.Name); } Console.WriteLine("Press any key to exit..."); Console.ReadKey(); } </code></pre>
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    1. POTable per Concrete Type (TPC) Mapping in EF4.4
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    1. USTommy Grovnes
    1. USTommy Grovnes
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    2. VO
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    3. VO
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    1. COIt seems to produce the same error.
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    2. COI've updated my answer
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      1. USTommy Grovnes
    3. COThanks! I'm assuming your answer works, but have now changed it all and flattened the class hierarchy :)
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