multiple partners in CDL

I'm not sure if this is lurking somewhere in the issues list, which is
why I've not raised it directly.
 
How should CDL handle a case where there are an indeterminate number of
similar partners. For example, the TWIST example shows two potential
sellers, but I believe that's just a simplification for explanatory
purposes - in reality, the request could be farmed out to any number of
sellers, with one being finally selected.  Coping with this would seem
to require some sort of collection/set/array construct in CDL - which
could be used for relationships, variables, etc.
 
Is this a current issue ?
 
 
(this arose out of working on the actions we got from the
coordination/transaction question, but I think is completely orthogonal
to that - a completely uncoordinated choreography seeking to find (but
not book) the cheapest whatever would have the same requirement)
 
Peter
 
------------------------------------------
Peter Furniss
Chief Scientist, Choreology Ltd
web: http://www.choreology.com <http://www.choreology.com/> 
email: peter.furniss@choreology.com
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