Yes, the structure consists of blank nodes.  

The structure is 

Project--(tasks)-->Task----+
                                    ^         |(next)
                                    +------+ 

The constructor on Project and builds a default task network of blank nodes and 
the tasks have constructors that set default task status.  When I delete the 
project instance the tasks appear to delete as well.  Why does this happen?

Arthur

On Jun 11, 2010, at 1:39 AM, Holger Knublauch wrote:

> Hi Arthur,
> 
> I am not sure if I understand your question.
> 
> On Jun 11, 2010, at 1:21 PM, Arthur Keen wrote:
> 
>> When I first tried spin:constructors last year, I noticed (in TBCME) that 
>> graph created by a cascade of spin constructors deleted when you deleted the 
>> root (initiating) object in a spin constructor cascade.
> 
> Could you clarify this a bit? Are your constructors creating a blank node 
> structure that it then dangling from the root object? These blank node trees 
> would indeed be deleted, but this has nothing to do with constructors. I am 
> not aware of other magic here.
> 
> Holger
> 
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