Commented Unassigned: $select and $expand not working properly for complex types in json formatter [1048]

Given the following model:

```
public class JsonSelectCustomer
{
public int Id { get; set; }
public string Name { get; set; }
public virtual IList<JsonSelectOrder> JsonSelectOrders { get; set; }
}

public class JsonSelectPremiumCustomer : JsonSelectCustomer
{
public string Category { get; set; }
public IList<JsonSelectBonus> Bonuses { get; set; }
}

public class JsonSelectBonus
{
public int Id { get; set; }
public double Ammount { get; set; }
}

public class JsonSelectOrder
{
public int Id { get; set; }
public DateTime Date { get; set; }
public JsonSelectAddress BillingAddress { get; set; }
public virtual IList<JsonSelectOrderDetail> OrderDetails { get; set; }
}

public class JsonSelectAddress
{
public string FirstLine { get; set; }
public string SecondLine { get; set; }
public int ZipCode { get; set; }
public string City { get; set; }
public string State { get; set; }
public string Country { get; set; }
}

public class JsonSelectOrderDetail
{
public int Id { get; set; }
public string Name { get; set; }
public int Ammount { get; set; }
public double Price { get; set; }
}
```

When a customer issues the following query:
/api/JsonSelectCustomer?$select=Id,JsonSelectOrders&$expand=JsonSelectOrders

The JsonSelectAddress property doesn't get serialized as it does in the OData case.
Here is the response payload sample:

```
[
{
"Id": 0,
"JsonSelectOrders": []
},
{
"Id": 1,
"JsonSelectOrders": [
{
"Id": 0,
"Date": "2013-05-14T11:20:45.2454402-07:00"
}
]
},
{
"Id": 2,
"JsonSelectOrders": [
{
"Id": 0,
"Date": "2013-05-14T11:20:45.2464399-07:00"
},
{
"Id": 1,
"Date": "2013-05-13T11:20:45.2464399-07:00"
}
]
},
{
"Id": 3,
"JsonSelectOrders": [
{
"Id": 0,
"Date": "2013-05-14T11:20:45.2474403-07:00"
},
{
"Id": 1,
"Date": "2013-05-13T11:20:45.2474403-07:00"
},
{
"Id": 2,
"Date": "2013-05-12T11:20:45.2474403-07:00"
}
]
},
{
"Id": 4,
"JsonSelectOrders": [
{
"Id": 0,
"Date": "2013-05-14T11:20:45.2474403-07:00"
},
{
"Id": 1,
"Date": "2013-05-13T11:20:45.2474403-07:00"
},
{
"Id": 2,
"Date": "2013-05-12T11:20:45.2474403-07:00"
},
{
"Id": 3,
"Date": "2013-05-11T11:20:45.2474403-07:00"
}
]
},
{
"Id": 5,
"JsonSelectOrders": [
{
"Id": 0,
"Date": "2013-05-14T11:20:45.2474403-07:00"
},
{
"Id": 1,
"Date": "2013-05-13T11:20:45.2474403-07:00"
},
{
"Id": 2,
"Date": "2013-05-12T11:20:45.2474403-07:00"
},
{
"Id": 3,
"Date": "2013-05-11T11:20:45.2474403-07:00"
},
{
"Id": 4,
"Date": "2013-05-10T11:20:45.2474403-07:00"
}
]
},
{
"Id": 6,
"JsonSelectOrders": [
{
"Id": 0,
"Date": "2013-05-14T11:20:45.2474403-07:00"
},
{
"Id": 1,
"Date": "2013-05-13T11:20:45.2474403-07:00"
},
{
"Id": 2,
"Date": "2013-05-12T11:20:45.2474403-07:00"
},
{
"Id": 3,
"Date": "2013-05-11T11:20:45.2474403-07:00"
},
{
"Id": 4,
"Date": "2013-05-10T11:20:45.2474403-07:00"
},
{
"Id": 5,
"Date": "2013-05-09T11:20:45.2474403-07:00"
}
]
},
{
"Id": 7,
"JsonSelectOrders": [
{
"Id": 0,
"Date": "2013-05-14T11:20:45.2474403-07:00"
},
{
"Id": 1,
"Date": "2013-05-13T11:20:45.2474403-07:00"
},
{
"Id": 2,
"Date": "2013-05-12T11:20:45.2474403-07:00"
},
{
"Id": 3,
"Date": "2013-05-11T11:20:45.2474403-07:00"
},
{
"Id": 4,
"Date": "2013-05-10T11:20:45.2474403-07:00"
},
{
"Id": 5,
"Date": "2013-05-09T11:20:45.2474403-07:00"
},
{
"Id": 6,
"Date": "2013-05-08T11:20:45.2474403-07:00"
}
]
},
{
"Id": 8,
"JsonSelectOrders": [
{
"Id": 0,
"Date": "2013-05-14T11:20:45.2474403-07:00"
},
{
"Id": 1,
"Date": "2013-05-13T11:20:45.2474403-07:00"
},
{
"Id": 2,
"Date": "2013-05-12T11:20:45.2474403-07:00"
},
{
"Id": 3,
"Date": "2013-05-11T11:20:45.2474403-07:00"
},
{
"Id": 4,
"Date": "2013-05-10T11:20:45.2474403-07:00"
},
{
"Id": 5,
"Date": "2013-05-09T11:20:45.2474403-07:00"
},
{
"Id": 6,
"Date": "2013-05-08T11:20:45.2474403-07:00"
},
{
"Id": 7,
"Date": "2013-05-07T11:20:45.2474403-07:00"
}
]
},
{
"Id": 9,
"JsonSelectOrders": [
{
"Id": 0,
"Date": "2013-05-14T11:20:45.2474403-07:00"
},
{
"Id": 1,
"Date": "2013-05-13T11:20:45.2474403-07:00"
},
{
"Id": 2,
"Date": "2013-05-12T11:20:45.2474403-07:00"
},
{
"Id": 3,
"Date": "2013-05-11T11:20:45.2474403-07:00"
},
{
"Id": 4,
"Date": "2013-05-10T11:20:45.2474403-07:00"
},
{
"Id": 5,
"Date": "2013-05-09T11:20:45.2474403-07:00"
},
{
"Id": 6,
"Date": "2013-05-08T11:20:45.2474403-07:00"
},
{
"Id": 7,
"Date": "2013-05-07T11:20:45.2474403-07:00"
},
{
"Id": 8,
"Date": "2013-05-06T11:20:45.2474403-07:00"
}
]
}
]
```


Comments: This is by-design. The OData conventional model builder treats all types as entities for the implicit model we build for query composition. This is due to the limitations that OData protocol has in v3 on complex types like complex types cannot refer to entity types. As address is an entity type, we don't expand it unless it is explicitly expanded through the query option $expand.