private void SurrogateWrite(StreamingContext context)
{
// while saving module instance data, load the instance IDs of the modules in the sequence into a set. Then, when saving the
// data set for all the modules, we can check if the module data is actually *being used* by anything; if not, we can remove it.
HashSet <Guid> activeInstances = new HashSet <Guid>();
_selectedTimingProviderSurrogate = new SelectedTimingProviderSurrogate(SelectedTimingProvider);
if (Media != null)
{
_mediaSurrogates = Media.Select(x => new MediaSurrogate(x)).ToArray();
Media.ForEach(x => activeInstances.Add(x.InstanceId));
}
if (EffectData != null)
{
_effectNodeSurrogates = EffectData.Select(x => new EffectNodeSurrogate((IEffectNode)x)).ToArray();
foreach (IDataNode dataNode in EffectData)
{
activeInstances.Add(((IEffectNode)dataNode).Effect.InstanceId);
}
}
if (LocalDataSet != null)
{
_dataModels = LocalDataSet.DataModels.Where(x => activeInstances.Contains(x.ModuleInstanceId)).ToArray();
}
if (SequenceFilterData != null)
{
_filterNodeSurrogates = SequenceFilterData.Select(x => new FilterNodeSurrogate((ISequenceFilterNode)x)).ToArray();
}
}
