Re: [Rdfapi-php-interest] Removing statement and children from model

[Richard C. <ri...@cy...>]

Hi Geraint,

On 2 Mar 2006, at 17:32, Geraint Edwards wrote:

> My data is in a strict hierarchical tree, 'nodes' have one and only  
> one parent and when I delete a 'node', say a member of a container,  
> I really want to remove all its descendents.
> If I use ResSeq->remove($myStatement) I am left with many orphans,  
> but if I use Model->findForward I should be able to find the 'sub- 
> tree' model and then  remove this model from my master model.  The  
> trouble is that my data is created by parsing the output from  
> another application which uses resources instead of blanknodes.
>
> Is there a reason that findForward only recurses down through  
> BlankNodes and not through resources too?

Yes, there's a reason. findForward computes the blank node closure of  
a statement and can be used to compute concise bounded descriptions  
(CBDs). Both seem to be useful to some folks and rely on recursing  
only over the blank nodes. So it's a different use case.

Richard

(Terminology nitpick: Blank nodes are resources too.)


>
> thanks
>
> Geraint
>
>
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