[Dev] sharing items

[John Anderson]

Hi Morgen:

I was thinking about the problem you posed yesterday, where two people 
want to share the same item, but each wants to give it a different name. 
Ideally, we'd like the item's data and UUID to be the same for all the 
copies, which makes it difficult to have different names.

However, we already have a potential situation where the data might 
differ: only a subset of shared data might be shared because some of the 
attributes are be private. Although we don't have a mechanism for this 
yet, we've postulated some ACL mechanism to specify which attributes are 
private.

Could we use a similar mechanism to indicate a set of items that are not 
shared on the shared item, e.g. the name attribute? If the sharing 
transport used this ACL information, it wouldn't need any more knowledge 
of the content model -- simplifying the design. Perhaps non shared 
attributes on items could also solve some of our other sharing problems.

John