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Subject: RE: [xdi] Groups - xdi-graph-wrapping-up-v2.doc uploaded

Hello Bill,

thank you for your feedback. I agreed with the "data uri xref" approach.

Only one caveat maybe - which is just related to date/time literals...

Here is a note on this topic by Tim Berners Lee

Syntax: Allow naked literal (limited, absolute, UTC) date-times in W3C  
standard format e.g. 2010-06-26 or 2010-06-26T12:04Z. (This format is  
distinguishable from other numeric forms. Date-times are a common and  
important datatype and reading and writing them with an explicit  
datatype is boring. In practice people end up putting them in data on  
the web as strings which prevents processing software and user agents  
providing appropriate functionality)


so instead that having this date expressed in base64, maybe could we  
have just a string?

E.g. =abc+age/$d/(data:,2010-09-20T10:11:12Z)

(comma after data: is required according to rfc2397)

What do you think?

Best Regards,

Def. Quota "Barnhill, William [USA]" <barnhill_william@bah.com>:

> I agree with everything in this document, but want to note something  
> about the convention used for literal XRIs.
> The following, =abc+age/$d/ā€œ2010-09-20T10:11:12Zā€, is not a valid  
> XRI unless things have changed, due to the quote characters.  The  
> way I have been dealing with this is that XRIs that represent  
> literals are data URI xrefs, like so:
> =abc+age/$d/ā€œ2010-09-20T10:11:12Zā€ converts to...
> =abc+age/$d/(data:text/plain;base64,MjAxMC0wOS0yMFQxMDoxMToxMlo=)
> That said, I'd recommend a statement in the specs that all XDI  
> parsers MUST transparently convert the form using double quotes to  
> the XRI/URI compliant form, for the purposes of readability and  
> adoption.
> Kind regards,
> Bill Barnhill
> ________________________________________
> From: giovanni.bartolomeo@uniroma2.it [giovanni.bartolomeo@uniroma2.it]
> Sent: Tuesday, January 25, 2011 11:29 AM
> To: xdi@lists.oasis-open.org
> Subject: [xdi] Groups - xdi-graph-wrapping-up-v2.doc uploaded
> .doc version with some corrections added
>  -- Giovanni Bartolomeo
> The document revision named xdi-graph-wrapping-up-v2.doc has been submitted
> by Giovanni Bartolomeo to the OASIS XRI Data Interchange (XDI) TC document
> repository.  This document is revision #1 of notes on the global
> graph.pdf.
> Document Description:
> An informal note containing a brief but accurate explanation of my
> viewpoint on the main global graph concepts. Backward compatibility with
> RDF is highlighted and explained whenever it occurs.
> View Document Details:
> http://www.oasis-open.org/committees/document.php?document_id=40874
> Download Document:
> http://www.oasis-open.org/committees/download.php/40874/xdi-graph-wrapping-up-v2.doc
> Revision:
> This document is revision #1 of notes on the global graph.pdf.  The
> document details page referenced above will show the complete revision
> history.
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