[Chandler-dev] Moving sharing-specific attributes out of ContentItem

[Grant Baillie]

On 26 Jan, 2007, at 13:55, Morgen Sagen wrote:

> To implement conflict resolution, I need to add a new sharing- 
> specific attribute to ContentItem which will connect an item to its  
> pending conflicts.  I am actually going to do this by defining a  
> SharedItem stamp and put the new attribute in there, but I was  
> hoping to be able to also move two long-time sharing-specific  
> attributes of ContentItem, "shares" and "sharedIn", into this stamp  
> as well.  This appears to be difficult because of  
> ContentItem.isAttributeModifiable( ).  That method needs access to  
> the "sharedIn" attribute, and if I move that attribute into the  
> sharing layer, some core pim code is now going to have a dependency  
> on the sharing package which I believe we want to avoid.
>
> Any ideas?

You probably want just an Annotation, not a Stamp, I'm guessing.

One possibility is to move isAttributeModifiable(), shares, and  
sharedIn into your class. You can also refer to the sharedIn  
attribute by its full name (which would end up being something like  
'osaf.pim.MorgensClass.sharedIn'), though that seems crufty to me.

--Grant