[foaf-dev] Re: Social Networks that use FOAF

[Kingsley Idehen]

Story Henry wrote:
>
> On 25 Mar 2008, at 13:12, Kingsley Idehen wrote:
>> Phillip,
>>
>> Please take a look at how ODS deals with these matters.
>>
>> Example instances:
>> - http://community.linkeddata.org/ods
>> - http://myopenlink.net:8890/ods
>>
>> My FOAF based profile page: 
>> http://community.linkeddata.org/dataspace/person/kidehen2
>>
>> If you go to the Profile page (should you register) you will notice 
>> that users have control over the visibility (public, friends, 
>> private) over FOAF properties. This has been so since day one (a long 
>> time ago). You can even use OAuth to provide access to specific data 
>> spaces.
>
> Hi Kingsley,
>
>     That is really nice. What you have is a way to specify for your 
> foaf file via a web interface which properties are visible to which of 
> three selected groups: public, friends, private.  Is the  friends 
> group you mention, the subset of your friends who have an account on 
> ODS? Or does it extend to any friend you link to in your foaf file, 
> whatever the domain of their URL?
Friends in ODS. But note that ODS accounts all have synonyms slots that 
link outwards to other ODS user identity URIs via owl:sameAs. We also 
have OAuth support, but the current implementation is scoped to ODS 
application instance data access. We could extend this to profile data.
>
> What I am not clear about is how a Semantic Web client, such as 
> Beatnik [1], can know that it needs to login using openid in order to 
> get more information on a foaf file. 
The FOAF information resource in our case resides in WebDAV so our ACL 
settings would result in an authentication challenge. What I need to 
verify is if this challenge accepts OpenID and/or  ODS credentials 
(which are WebDAV based).
> I think this needs to be expressed in the foaf file too in a standard 
> manner to make it machine readable.
Yes, that would be most flexible .
>
>     Henry
>
> [1] https://sommer.dev.java.net/
>


-- 


Regards,

Kingsley Idehen	      Weblog: http://www.openlinksw.com/blog/~kidehen
President & CEO 
OpenLink Software     Web: http://www.openlinksw.com