EntitySetController currently returns an IQueryable<T> for its Get() function. When supplying the $select query, it'll throw an ArgumentException stating that it is unable to convert the SelectExpandWrapper to IQueryable.
I suppose the function should be changed to return an IEnumerable instead and set the QueryableAttribute on it.
I also think the functions that return T should be adapted to utilize SingleResult<T>?
Comments: I assume you are asking for application/xml and not using ODataFormatter. We only support JsonFormatter and ODataFormatter with $select and $expand right now. Getting XmlFormatter to work with $select and $expand is a much harder job and is not done right now.
I suppose the function should be changed to return an IEnumerable instead and set the QueryableAttribute on it.
I also think the functions that return T should be adapted to utilize SingleResult<T>?
Comments: I assume you are asking for application/xml and not using ODataFormatter. We only support JsonFormatter and ODataFormatter with $select and $expand right now. Getting XmlFormatter to work with $select and $expand is a much harder job and is not done right now.