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POFluent NHibernate child class mapping using DiscriminateSubClassesOnColumn issue
 

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  1. POFluent NHibernate child class mapping using DiscriminateSubClassesOnColumn issue
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    <p>I have an issue with mapping, simplified my relationship looks like this. I have parent class:</p> <pre><code>public abstract class DocumentType { public virtual int Id { get; set; } public virtual string Name { get; set; } } </code></pre> <p>and two subclasses:</p> <pre><code>public class UploadedFileDocument : DocumentType { } public class ApplicationFormDocument : DocumentType { } </code></pre> <p>mapped like this:</p> <pre><code>public DocumentTypeMap() { Schema("Core"); Id(x =&gt; x.Id); Map(x =&gt; x.Name).Length(128).Not.Nullable(); DiscriminateSubClassesOnColumn("Type"); } public class UploadedFileDocumentMap : SubclassMap&lt;UploadedFileDocument&gt; { } public class ApplicationFormDocumentMap : SubclassMap&lt;ApplicationFormDocument&gt; { } </code></pre> <p>Then I have another entity with a FK to DocumentType, mapped like this:</p> <pre><code>public FileConversionMap() { Schema("Core"); Id(x =&gt; x.Id); References(x =&gt; x.Application).Not.Nullable(); References(x =&gt; x.DocumentType).Not.Nullable().Fetch.Select(); } </code></pre> <p>my issue is, when I retrieve rows from the DB like this:</p> <pre><code>Session.Query&lt;FileConversion&gt;().AsQueryable(); </code></pre> <p>all the rows come back with the <code>DocumentType</code> being of type <code>DocumentType</code>, not of the child type (ie the actual type of that property, ie. when i do <code>.GetType()</code>, either <code>UploadedFileDocument</code> or <code>ApplicationFormDocument</code>)</p> <p>Apologies if this is just me being dim. But how can I determine which type of <code>DocumentType</code> I have ... is my mapping wrong?</p>
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