public override void ReadFromPhysical(byte[] buffer, int offset)
{
// Clear current value
if (ValuesOwned && !IsNative && (StreamID != StreamID.Null))
{
Manager.StreamManager.Deallocate(StreamID);
}
// Read scalar header
byte header = buffer[offset];
offset++;
if ((header & 1) != 0) // if not nil
{
if ((header & 2) != 0)
{
if (DataType.IsCompound)
{
using (IRow row = (IRow)DataValue.FromPhysical(Manager, DataType.CompoundRowType, buffer, offset))
{
Value = row.AsNative;
row.ValuesOwned = false;
}
}
else
{
Streams.IConveyor conveyor = Manager.GetConveyor(DataType);
if (conveyor.IsStreaming)
{
Stream stream = new MemoryStream(buffer, offset, buffer.Length - offset, false, true);
Value = conveyor.Read(stream);
stream.Close();
}
else
{
Value = conveyor.Read(buffer, offset);
}
}
}
else
{
if ((header & 4) != 0) // if expanded form
{
Value = Manager.StreamManager.Allocate();
Stream stream = Manager.StreamManager.Open(StreamID, LockMode.Exclusive);
stream.Write(buffer, offset, buffer.Length - offset);
stream.Close();
}
else
{
Value = StreamID.Read(buffer, offset);
}
}
}
else
{
if ((header & 2) != 0)
{
Value = null;
}
else
{
Value = StreamID.Null;
}
}
}
