internal void LoadRoots(ModelTransaction transaction)
{
// Exit immediately if roots have already been loaded
if (Roots != null)
{
return;
}
// Create an array of roots to be loaded
Roots = new ModelInstance[Ids == null ? 0 : Ids.Length];
// Get the root instances
for (int i = 0; i < Roots.Length; i++)
{
// Create the root instance
Roots[i] = transaction == null?From.Create(Ids[i]) : transaction.GetInstance(From, Ids[i]);
}
// Access a property to force the instance to initialize. Do a seperate pass so batched loading will work.
for (int i = 0; i < Roots.Length; i++)
{
var initProp = Roots[i].Type.Properties.FirstOrDefault(p => p is ModelValueProperty) ?? Roots[i].Type.Properties.FirstOrDefault(p => p is ModelReferenceProperty);
if (initProp == null)
{
throw new Exception(string.Format("Type \"{0}\" cannot be forced to initialize because it has no properties.", Roots[i].Type.Name));
}
Roots[i].OnPropertyGet(initProp);
}
}