private void ProcessEntity(IEntity entity)
{
var isApplicable = ShouldTransform(entity);
if (!isApplicable)
{
if (!FilteredCache.ContainsKey(entity.Id))
{
return;
}
RemoveEntity(entity.Id);
return;
}
var transformedData = Transform(entity);
if (FilteredCache.ContainsKey(entity.Id))
{
ChangeEntity(entity.Id, transformedData);
return;
}
AddEntity(entity.Id, transformedData);
}
private void AddEntity(int entityId, T transformedData)
{
FilteredCache.Add(entityId, transformedData);
_onElementAdded.OnNext(new CollectionElementChangedEvent <T>
{
Index = entityId,
OldValue = default(T),
NewValue = transformedData
});
}
private void RemoveEntity(int entityId)
{
var currentValue = FilteredCache[entityId];
FilteredCache.Remove(entityId);
_onElementRemoved.OnNext(new CollectionElementChangedEvent <T>
{
Index = entityId,
OldValue = currentValue,
NewValue = default(T)
});
}
