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POEntity framework 'table-per-concrete-class' maps to wrong table
 

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  1. POEntity framework 'table-per-concrete-class' maps to wrong table
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    <p>I'm trying to do a table-per-concrete-class mapping with the Entity Framework in an ASP.NET MVC application. It's for a school assignement and i have to map to an existing (mysql) database.</p> <pre><code>public class Deelnemer { public Deelnemer() { OpgelosteDoosVragen = new List&lt;OpgelostDoosVraag&gt;(); } public string Emailadres { get; set; } public virtual IList&lt;OpgelostDoosVraag&gt; OpgelosteDoosVragen { get; set; } } } </code></pre> <p>This class contains a list of 'OpgelosteDoosVragen'. The class 'OpgelosteDoosVragen' (empty at the moment) inherits from 'AbstractOpgelost'.</p> <pre><code>public abstract class AbstractOpgelost { protected AbstractOpgelost() { OpgelostId = new Guid(); } public Guid OpgelostId { get; set; } public virtual AbstractVraag AbstractVraag { get; set; } public virtual AbstractAntwoord AbstractAntwoord { get; set; } public virtual Element Element { get; set; } } public class OpgelostDoosVraag : AbstractOpgelost { } </code></pre> <p>The mapping: </p> <pre><code>public class AbstractOpgelostMap : EntityTypeConfiguration&lt;AbstractOpgelost&gt; { public AbstractOpgelostMap() { this.HasKey(t =&gt; t.OpgelostId); this.Property(t =&gt; t.OpgelostId) .HasDatabaseGeneratedOption(DatabaseGeneratedOption.None); this.HasRequired(t =&gt; t.Element).WithMany().Map(t =&gt; t.MapKey("elementNaam")); this.HasRequired(t =&gt; t.AbstractVraag).WithMany().Map(t =&gt; t.MapKey("vraagId")); this.HasRequired(t =&gt; t.AbstractAntwoord).WithMany().Map(t =&gt; t.MapKey("antwoordId")); } } public class OpgelostDoosVraagMap : EntityTypeConfiguration&lt;OpgelostDoosVraag&gt; { public OpgelostDoosVraagMap() { this.Map(t =&gt; { t.MapInheritedProperties(); t.ToTable("doos_opgelostevragen"); }); } } </code></pre> <p>OnModelCreating method:</p> <pre><code> protected override void OnModelCreating(DbModelBuilder modelBuilder) { modelBuilder.Configurations.Add(new OpgelostDoosVraagMap()); modelBuilder.Configurations.Add(new DeelnemerMap()); modelBuilder.Configurations.Add(new doosMap()); modelBuilder.Configurations.Add(new doosVraagMap()); modelBuilder.Configurations.Add(new DoosAntwoordMap()); modelBuilder.Configurations.Add(new ElementMap()); modelBuilder.Configurations.Add(new AbstractAntwoordMap()); modelBuilder.Configurations.Add(new AbstractVraagMap()); modelBuilder.Configurations.Add(new AbstractOpgelostMap()); } </code></pre> <p>When I try to access the list in Deelnemer an EntityCommandExecution is thrown is thrown and it says: <code>MySql.Data.MySqlClient.MySqlException: Table 'kindermishandeling.abstractopgelosts' doesn't exist</code> The problem is entity framework wants to map to the table of the abstract class 'AbstractOpgelost' but it has to map to doos_opgelostevragen (the table of the concrete class).</p> <p>Does anyone see a problem in my mapping. I'm looking for hours and i'm desperate...</p>
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    1. USwardva
    1. USwardva
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    1. COAny chance you could add the contents of your `OnModelCreating()` method?
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      1. USJeremy Todd
 

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