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ACL Append

From: Nathan <nathan@webr3.org>
Date: Fri, 18 Jun 2010 22:46:29 +0100
Message-ID: <4C1BE935.2050002@webr3.org>
To: foaf-protocols <foaf-protocols@lists.foaf-project.org>, Linked Data community <public-lod@w3.org>
Following the recent update of a few of the design issues, one change to 
the 'Socially Aware Cloud Storage' [1] introduced (among many other 
interesting updates) the following sentence:

'If I want to say that I want to be your friend, for example, I could 
write that as a simple one-line statement into a "friend requests" file 
which you allow me write access to. In fact, I only need append access, 
and not even read or general write access to that list.'

Hand in hand with this, the ACL Ontology has been updated to to include 
a new acl:Append (in addition to the existing :Control, :Read, :Write)

http://www.w3.org/ns/auth/acl#Append
'Append accesses are specific write access which only add information, 
and do not remove information.
For text files, for example, append access allows bytes to be added onto 
the end of the file.
For RDF graphs, Append access allows adds triples to the graph but does 
not remove any.
Append access is useful for dropbox functionality.
Dropbox can be used for link notification, which the information added 
is a notification that a some link has been made elsewhere relevant to 
the given resource.'

Best,

Nathan

[1] http://www.w3.org/DesignIssues/CloudStorage.html
Received on Friday, 18 June 2010 21:47:42 UTC

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