EF Code First - Include(x => x.Properties.Entity) a 1 : Many association

Question

Given a EF-Code First CTP5 entity layout like:

public class Person { ... }

which has a collection of:

public class Address {

Answer 1

It is described in this post: http://www.thomaslevesque.com/2010/10/03/entity-framework-using-include-with-lambda-expressions/

Edit (By Asker for readability): The part you are looking for is below:

public static class ObjectQueryExtensions
{
    public static ObjectQuery Include(this ObjectQuery query, Expression> selector)
    {
        string path = new PropertyPathVisitor().GetPropertyPath(selector);
        return query.Include(path);
    }

    class PropertyPathVisitor : ExpressionVisitor
    {
        private Stack _stack;

        public string GetPropertyPath(Expression expression)
        {
            _stack = new Stack();
            Visit(expression);
            return _stack
                .Aggregate(
                    new StringBuilder(),
                    (sb, name) =>
                        (sb.Length > 0 ? sb.Append(".") : sb).Append(name))
                .ToString();
        }

        protected override Expression VisitMember(MemberExpression expression)
        {
            if (_stack != null)
                _stack.Push(expression.Member.Name);
            return base.VisitMember(expression);
        }

        protected override Expression VisitMethodCall(MethodCallExpression expression)
        {
            if (IsLinqOperator(expression.Method))
            {
                for (int i = 1; i < expression.Arguments.Count; i++)
                {
                    Visit(expression.Arguments[i]);
                }
                Visit(expression.Arguments[0]);
                return expression;
            }
            return base.VisitMethodCall(expression);
        }

        private static bool IsLinqOperator(MethodInfo method)
        {
            if (method.DeclaringType != typeof(Queryable) && method.DeclaringType != typeof(Enumerable))
                return false;
            return Attribute.GetCustomAttribute(method, typeof(ExtensionAttribute)) != null;
        }
    }
}