[oslc-core] ordered properties

[Arthur Ryman]

Jim,

In the interests of keeping the Core small, I think we should simply say 
that specs SHOULD use existing methods for ordered properties if they 
apply. The RDF Schema spec defines two methods.

1. Containers -  rdf:Seq - you would create a subclass of this and use the 
built-in properties rdf:_1, rdf:_2, etc. to relate the container to its 
ordered members. Containers are open, so they would not be right for 
things like argument lists.

2. Collections - rdf:List, rdf:first, rdf:rest, rdf:nil - you use these to 
construct a linked list. This is appropriate for ordered, closed lists of 
items such as method argument lists.

Regards, 
___________________________________________________________________________ 

Arthur Ryman, PhD, DE


Chief Architect, Project and Portfolio Management

IBM Software, Rational

Markham, ON, Canada | Office: 905-413-3077, Cell: 416-939-5063
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From:
James Conallen <jconallen at us.ibm.com>
To:
oslc-core at open-services.net
Date:
07/20/2010 01:26 PM
Subject:
[oslc-core] ordered properties
Sent by:
oslc-core-bounces at open-services.net



In the section "Order of property values insignificant" it states that 
"providers MUST not place any significance on the ordering of property 
values in representations." 

Would it be appropriate to append to this some guidance on how ordering 
should be achieved (i.e. rdf:Seq)? 

Otherwise we might end up with many different ways to imply ordering.

<jim/>

jim conallen
jconallen at us.ibm.com
Rational Software, IBM Software Group
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