protected override ExpandQueryPart Parse(string parameterValue) { var matches = Regex.Matches(parameterValue, @"(?:\w+/)*\w+", RegexOptions.IgnoreCase).Cast <Match>(); var members = new List <MemberAccessFilterExpression>(); foreach (var match in matches) { var s = match.Value.Split('/'); var selector = s .Aggregate <string, MemberAccessFilterExpression>(null, FilterExpression.MemberAccess); members.Add(selector); } return(ODataQueryPart.Expand(members.ToArray())); }