/// <summary></summary>
public override void Execute()
{
if (!_collection.WasInitialized)
{
if (!_collection.HasQueuedAdds)
{
throw new AssertionFailure("bug processing queued adds");
}
// do nothing - collection was not initialized
// we only need to notify the cache...
}
else if (_collection.Empty)
{
// the collection had all elements removed - check to see if it
// was empty when it was loaded or if the contents were actually
// deleted
if (!_emptySnapshot)
{
Persister.Remove(Id, Session);
}
}
else if (_collection.NeedsRecreate(Persister))
{
// certain collections (Bag) have to be recreated in the db each
// time - if the snapshot was not empty then there are some existing
// rows that need to be removed.
if (!_emptySnapshot)
{
Persister.Remove(Id, Session);
}
Persister.Recreate(_collection, Id, Session);
}
else
{
// this is a normal collection that needs to have its state
// synched with the database.
Persister.DeleteRows(_collection, Id, Session);
Persister.UpdateRows(_collection, Id, Session);
Persister.InsertRows(_collection, Id, Session);
}
Evict();
}