private object LoadObjectTree(LayerInfo layer, IDataReader reader, out bool successRead)
{
var val = (IComparable)reader.GetValue(layer.LayerOffset);
var entityObject = layer.CreatingDelegate(reader, layer.LayerOffset);
var notfirst = false;
foreach (var fillingDelegate in layer.FillingDelegates)
{
fillingDelegate(reader, entityObject, layer.LayerOffset + (notfirst ? 1 : 2));
notfirst = true;
}
successRead = true;
if (layer.NextLayer != null)
{
//todo: nav-filling delegates - separate
var nextPart = (SubTypePart) layer.NextLayer.TypePart;
var property = entityObject.GetType().GetProperty(nextPart.CollectingProperty.Name);
if (property.PropertyType.IsCollection())
{
var itemType = property.PropertyType.GetCollectionType();
var collection = (IList) Activator.CreateInstance(typeof (List<>).MakeGenericType(itemType));
while (successRead && ((IComparable)reader.GetValue(layer.LayerOffset)).CompareTo(val) == 0)
{
var propObj = LoadObjectTree(layer.NextLayer, reader, out successRead);
collection.Add(propObj);
}
if (property.PropertyType.IsArray)
{
var array = Array.CreateInstance(itemType, collection.Count);
collection.CopyTo(array, 0);
property.SetValue(entityObject, array);
}
else
{
property.SetValue(entityObject, collection);
}
}
else
{
while (successRead && ((IComparable)reader.GetValue(layer.LayerOffset)).CompareTo(val) == 0)
{
var propObj = LoadObjectTree(layer.NextLayer, reader, out successRead);
property.SetValue(entityObject, propObj);
}
}
}
else if (layer.Expansions.Count > 0)
{
var exp = layer.Expansions.First();
var property = entityObject.GetType().GetProperty(exp.CollectingProperty.Name);
var itemType = property.PropertyType.GetCollectionType();
var primitive = (PrimitiveListTable)exp.Table;
var collection = (IList)Activator.CreateInstance(typeof(List<>).MakeGenericType(itemType));
if (primitive.MaintainOrder)
{
var dictionary = new SortedDictionary<long, object>();
var offset = layer.LayerEnds;
while (successRead && ((IComparable) reader.GetValue(layer.LayerOffset)).CompareTo(val) == 0)
{
var k = reader.GetInt64(offset + 2);
var v = reader.GetValue(offset + 1);
dictionary[k] = v;
successRead = reader.Read();
}
//todo: optimize
foreach (var item in dictionary)
{
collection.Add(item.Value);
}
}
else
{
var offset = layer.LayerEnds;
while (successRead && ((IComparable)reader.GetValue(layer.LayerOffset)).CompareTo(val) == 0)
{
var v = reader.GetValue(offset + 1);
collection.Add(v);
successRead = reader.Read();
}
}
if (property.PropertyType.IsArray)
{
var array = Array.CreateInstance(itemType, collection.Count);
collection.CopyTo(array, 0);
property.SetValue(entityObject, array);
}
else
{
property.SetValue(entityObject, collection);
}
}
else
{
successRead = reader.Read();
}
return entityObject;
}
