/// <summary>
/// Allows the reading of frames to be overriden
/// </summary>
/// <returns>The read frame</returns>
protected virtual DataFrame ReadDataFrame()
{
DataFrame ret = null;
bool done = true;
do
{
IDataAdapter adapter = _adapter;
done = true;
if (_adapter != null)
{
ret = _adapter.Read();
if (ret == null)
{
if (!Interlocked.ReferenceEquals(_adapter, adapter))
{
done = false;
}
}
}
}while (!done);
return(ret);
}