internal bool UpdateBlobToDiscIfNeeded(object entity, object id, object[] currentState, object[] previousState, string[] propertyNames, IType[] types)
{
bool res = false;
var result = from t in types.Select((n, index) => new { Type = n, Index = index }) where t.Type.ReturnedClass.Equals(_BLOB) select t.Index;
foreach (var el in result)
{
object o = (currentState == null) ? null : currentState[el];
object p = (previousState == null) ? null : previousState[el];
bool needtocleanold = (p != null);
if (object.ReferenceEquals(o, p))
continue;
if (o != null)
{
res = true;
IPersistentBufferProvider IBP = o as IPersistentBufferProvider;
if (IBP.IsPersistent)
needtocleanold = false;
else
{
if (!IBP.Save( _Tx.Folders.GetPrivatePath()))
{
//rollback if save as failed
currentState[el] = p;
needtocleanold = false;
}
else
{
IBP.IsPersistent = true;
File.SetAttributes(IBP.PersistedPath, File.GetAttributes(IBP.PersistedPath) | (FileAttributes.Hidden | FileAttributes.Archive |
FileAttributes.ReadOnly));
NewFiles.Add(IBP.PersistedPath);
}
}
}
if (needtocleanold)
{
IPersistentBufferProvider old = previousState[el] as IPersistentBufferProvider;
if (old.IsPersistent)
OldFiles.Add(old.PersistedPath);
}
}
return res;
}
