[Dev] The Chandler/Cosmo sharing format

[Lisa Dusseault]

On Wed, 08 Mar 2006 10:26:11 -0800, Bobby Rullo <br at osafoundation.org>  
wrote:

>
>> 2.  The "If" header allows you to create two resources in a way that  
>> creating the second one relies on the existence of the first one.  The  
>> second PUT would look like this
>>
>> 	PUT /users/lisa/work/task-prepare-staff-meeting HTTP/1.1
>> 	If: <http://share.o11n.org/users/lisa/work/staff-meeting-event>  
>> ([event-etag])
>> 	Content-Type: text/calendar
>> 	...
>>
>> There's two options, there may be others.
>>
>
>
> I'm not sure how that would solve the transactionality problem. If the  
> second PUT failed, the first one would still remain, no?
>
>
Yes, that's true.  How to fix atomicity failures might depend on how  
exactly they tend to happen -- probably needs more research to see what  
the failure case typically is.  Having the second PUT depend on the  
success of the first might address some or many of those failures or it  
might not.

Lisa