How to structure in-memory entity classes to load denormalized referenced documents from RavenDB - ravendb

Question

I am receiving a FormatException when trying to load a an Album document from the default RavenDB database:
using (var session = _documentStore.OpenSession())
{
var album = session.Load<Album>(500);
//....
}
The Album JSON document in the database looks like this:
{
"AlbumArtUrl": "/Content/Images/placeholder.gif",
"Genre": {
"Id": "genres/10",
"Name": "Classical"
},
"Price": 8.99,
"Title": "The Best of Beethoven",
"CountSold": 0,
"Artist": {
"Id": "artists/203",
"Name": "Nicolaus Esterhazy Sinfonia"
}
}
And my in-memory entity Album class looks like this:
public class Album
{
public long Id { get; set; }
public string AlbumArtUrl { get; set; }
public DenomralizedGenre Genre { get; set; }
public decimal Price { get; set; }
public string Title { get; set; }
public int CountSold { get; set; }
public DenomralizedArtist Artist { get; set; }
}
public class DenomralizedGenre
{
public int Id { get; set; }
public string Name { get; set; }
}
public class DenomralizedArtist
{
public int Id { get; set; }
public string Name { get; set; }
}
What am I doing wrong here?

Answer 1

Make all your Id strings. You have them as int and long. In RavenDB Id's are strings.
The Id as a string would be Album/24 in RavenDB. The Class name or type plus the HiLo value (created by the client tools) make up the Id.