ISSUE-79 ldp:contains

On 31 May 2013, at 22:30, John Arwe <johnarwe@us.ibm.com> wrote:

> > By-reference is totally different! That is exactly what I want to 
> > not have confused with ldp:contains. 
> 
> My gut reaction is: if a client listing a container's membership is limited to finding resources newly created by/through HTTP interactions with the container, then this spec applies to zero of my use cases.  It completely ceases to be an interesting spec in anything aside from a purely academic exercise, and I don't get paid for those (oh that it were so!  :-) 

It is not academic. The Atom Protocol uses this type of relation and does a huge amount with
it.  The ldp:contains relation is a very simple relation that is close to the RFC4287  atom:entry. 

   http://tools.ietf.org/html/rfc4287#section-1.1

You don't do everything with ldp:contains. In atom you put your data in the content of an entry. 
With LDP we are just semanticising this: you put your content in the LDPRs that you created
on POSTing to the LDPCs. You get all the flexibility out of this that you wish. 

> 
> It cannot even handle a simple query result from a db query. 

Queries are covered by other specs: SPARQL for example. In a later spec it
would be interesting to get the SPARQL aligned with LDP. 

> Now maybe there is something in all changes you've proposed that I've missed, if so by all means point it out. 

The ldp:contains relation is just a way to help us distinguish the specific conainment relation
from other relaitons. rdf:member is too general, this proposal is just to reduce the inferencing
required. 

Other issues I brought up are independently motivated.

> 
> 
> I have no problem with the notion that a container exposes that smaller member list, optionally.   
> But limiting it to that, not AT ALL interested/ing. 

Ah I never said one should limit relations in an ldpc to ldp:contains.
If other relations make sense then that's ok.


> 
> 
> Best Regards, John
> 
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> 

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