Re: [xdi] Groups - Comments about XDI versioning (Draft-Contrib-OASIS-XDI-versioning.pdf) uploaded

Heya Giovanni,

Since I already tried to implement the versioning described in the XDI RDF Model v8 doc, it's interesting for me to read your comments about this..

- Regarding the use of $num instead of ! to index things, I think it's mostly a matter of taste. Both would work fine I think. One thought I am having is that subsegments like !1, !2, !3 do exist in XRI resolution too. I.e. there are some authority resolution servers that use these number-like subsegments (and not ip address-like subsegments like !203.173.1276.1663)..

- Regarding the number of versions, can I ask you something? 

Maybe you can take a quick look at this URL: http://graceland.parityinc.net/xdi-endpoint/hibernate-graph-ver/=drummond

As you can see there are the following two statements:

=drummond/$has/$v   (this says that =drummond is versioned)
=drummond/$v/!5   (this says the current version is 5)

I'd like to understand how you would do it instead.

Would you say this?
=drummond/$has$num$5/$v

Or this?
=drummond/$has$5/$v

Just trying to understand it correctly.. I like the idea very much, it makes versioning a bit simpler and more consistent with other constructs..

Note to Drummond: We were talking about how to express multiple values of an attribute (e.g. =markus has multiple +email addresses). After reading Giovanni's comments, it appears to me that versioning may just be another instance of that same problem. I.e. there's no difference between saying =markus has 5 +email addresses, and saying that =drummond has 5 $v ersions. I agree with Giovanni that the same construct should be used in both cases.

- I don't understand why I would use the comparison operators like $greater in versioning.. What would be a practical use case for this? But in general I think these operators can be very useful..

Markus

On 14 Feb 2008 13:53:29 -0000,  <> wrote:

The document named Comments about  XDI versioning

(Draft-Contrib-OASIS-XDI-versioning.pdf) has been submitted by Giovanni

Bartolomeo to the OASIS XRI Data Interchange (XDI) TC document repository.

Document Description:

A first draft of comments on XDI versioning syntax

View Document Details:

http://www.oasis-open.org/apps/org/workgroup/xdi/document.php?document_id=27179

Download Document:

http://www.oasis-open.org/apps/org/workgroup/xdi/download.php/27179/Draft-Contrib-OASIS-XDI-versioning.pdf

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