public IEvent transformEvent(TodoItemNameChanged toTransform, IEvent transformAgainst)
{
if (transformAgainst.GetType().Equals(typeof(TodoItemCreated)))
{
//Change a name on an item that has been created server side without this side knowing, impossible.
}
else if (transformAgainst.GetType().Equals(typeof(TodoItemDeleted)))
{
if (toTransform.aggregateId == ((TodoItemDeleted)transformAgainst).aggregateId)
//Delete todo item when other side has also deleted it. No problem, remove this event.
return new Unused();
}
else if (transformAgainst.GetType().Equals(typeof(TodoItemNameChanged)))
{
// If it is the exact same, remove the event.
if (toTransform.Equals((TodoItemNameChanged)transformAgainst))
return new Unused();
// If it is On the same aggregate but not the same, conflict.
else if (toTransform.aggregateId == ((TodoItemNameChanged)transformAgainst).aggregateId)
return null;
}
else if (transformAgainst.GetType().Equals(typeof(TodoItemsDeleted)))
{
//If the item deleted is deleted by multiple on the server, remove this event
if (((TodoItemsDeleted)transformAgainst).aggregateIds.Contains(toTransform.aggregateId))
return new Unused();
}
return toTransform;
}
