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POCustom Un-typed WCF Data Service Provider - Identity Column problem
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copied!<p><strong>Problem Background</strong></p> <p>I'm building a custom WCF Data Service provider using the <a href="http://blogs.msdn.com/b/alexj/archive/2010/01/07/data-service-providers-getting-started.aspx" rel="nofollow">Alex James set of posts</a> as a basis. My provider works with <strong>un-typed</strong> entities and sits on top of our own ORM Entity definition framework. </p> <p>Although I've had a lot of success covering all of the main requirements we've got, I've hit a wall when it comes to defining auto-generated properties in the exposed $metadata page. (The $metadata page is automatically generated by .NET Framework from the internal representation of the metadata - I don't define the document content directly).</p> <p>Examining the $metadata page for a standard WCF Data Service on top of a simple EF model, you get something like:</p> <pre><code><Property Name="ID" Type="Edm.Int16" Nullable="false" p8:StoreGeneratedPattern="Identity"/> </code></pre> <p>with the <em>StoreGeneratedPattern</em> attribute letting the consumers know about the auto-generation for the given field.</p> <p><strong>The Specific Problem</strong></p> <p>My problem is that, in my custom <strong>un-typed</strong> world, I can't get find the hook to get the <em>StoreGeneratedPattern</em> attribute into my metadata. I'm looking around <em>IDataServiceMetadataProvider</em> and the <em>System.Data.Services.*</em> namespaces but I'm completely stumped. </p>

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