internal static IQueryable Build(IQueryable query, IEnumerable <Tuple <Sort, LambdaExpression> > sorts)
{
bool then = false;
foreach (var state in sorts)
{
var lambda = state.Item2;
string name = "Queryable";
if (!then)
{
name += "OrderBy";
then = true;
}
else
{
name += "ThenBy";
}
if (state.Item1.SortType == SortType.Descending)
{
name += "Descending";
}
query = (IQueryable)TypicalLinqMethods.GetMethod(name)
.MakeGenericMethod(query.ElementType, lambda.ReturnType)
.Invoke(null, new object[] { query, lambda });
}
return(query);
}
protected internal override Expression CreateExpression(MemberExpression member, WhereBuilderContext context)
{
if (Value == null)
{
return(null);
}
var value = Expression.Constant(Value, member.Type);
if (Operator != StringOperator.Equal)
{
return(Expression.Call(member, TypicalLinqMethods.GetMethod("String" + Operator), value));
}
else
{
return(Expression.Equal(member, value, true, null));
}
}
