private static MethodInfo GetOrderByMethodInfo(Expression source, OrderByDirection direction, Type sourceType, Type keyType)
{
if (source.Type.GetGenericTypeDefinition() == typeof(IOrderedEnumerable <>))
{
return(direction == OrderByDirection.Ascending ?
OeMethodInfoHelper.GetThenByMethodInfo(sourceType, keyType) :
OeMethodInfoHelper.GetThenByDescendingMethodInfo(sourceType, keyType));
}
else
{
return(direction == OrderByDirection.Ascending ?
OeMethodInfoHelper.GetOrderByMethodInfo(sourceType, keyType) :
OeMethodInfoHelper.GetOrderByDescendingMethodInfo(sourceType, keyType));
}
}