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POEntity Framework 4.1 Dynamically retrieve mapped column name
 

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    <p>I am trying to construct an SQL statement dynamically.</p> <p>My context is created dynamically, using reflection finding classes deriving from EntityTypeConfiguration and adding them to DbModelBuilder.Configuration.</p> <p>My EntityTypeConfiguration classes specify HasColumnName to map the Entity property name to db table column name, which I need to construct my SQL statement.</p> <pre><code>namespace MyDomain { public class TestEntityConfig : EntityTypeConfiguration&lt;TestEntity&gt;{ Property("Name").HasColumnName("dbName"); } } </code></pre> <p>From What I have researched, it seems I can get access to this information through MetadataWorkspace, which I can get to through ObjectContext. </p> <p>I have managed to retrieve the the entity I am interested in with MetadataWorkspace.GetItem("MyDomain.TestEntity",DataSpace.OSpace), which gives me access to Properties, but none of the properties, of Properties, give me the name of the mapped db column, as specified with HasColumnName.</p> <p>Also I am not clear what DataSpace.OSpace is and why my model is constructed in this space.</p> <p>If Anyone can shed some light on this I would be grateful</p> <h2>UPDATE</h2> <p>Further to @Ladislav's comments. I discovered I can get the information as follows For the class properties </p> <pre><code>ctx.MetadataWorkspace.GetItem&lt;ClrEntityType&gt;("MyDomain.TestEntity", DataSpace.OSpace)).Members </code></pre> <p>For the table properties</p> <pre><code>ctx.MetadataWorkspace.GetItem&lt;EntityType&gt;("CodeFirstDatabaseSchema.TestEntity",SSpace).Members </code></pre> <p>So given that I only know the type MyDomain.TestEntity and Memeber "Name". How would I go about to get "dbName". Can I always assume that my mapped class will be created in CodeFirstDatabaseSchema, om order to dynamically construct the identity to retrieve it from SSpace and how would I get to the correct Member in SSpace. Can I do something like</p> <pre><code>var memIndex = ctx.MetadataWorkspace.GetItem&lt;ClrEntityType&gt;("MyDomain.TestEntity", DataSpace.OSpace)).Members["Name"].Index; var dbName = ctx.MetadataWorkspace.GetItem&lt;EntityType&gt;("CodeFirstDatabaseSchema.TestEntity",SSpace).Members[memIndex]; </code></pre>
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    1. COClrEntityType is internal to System.Data.Entity. How are you doing this call? Reflection?
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