public static IGremlinQuery <T> ByMember <T>(this IGremlinQuery <T> query, Expression <Func <T, object> > projection, GremlinSortOrder sortOrder = GremlinSortOrder.Increasing)
{
var body = projection.Body;
if (body is UnaryExpression && body.NodeType == ExpressionType.Convert)
{
body = ((UnaryExpression)body).Operand;
}
var memberExpression = body as MemberExpression;
if (memberExpression != null)
{
return(query
.AddStep <T>("by", memberExpression.Member.Name, new SpecialGremlinString(sortOrder.ToString().Substring(0, 4).ToLower())));
}
throw new NotSupportedException();
}
public static IGremlinQuery <T> ByTraversal <T>(this IGremlinQuery <T> query, Func <IGremlinQuery <T>, IGremlinQuery> traversal, GremlinSortOrder sortOrder = GremlinSortOrder.Increasing)
{
return(query
.AddStep <T>("by", traversal(query.ToAnonymous()), new SpecialGremlinString(sortOrder.ToString().Substring(0, 4).ToLower())));
}