Re: [xdi] proposal for binary data literal node

[Michael Schwartz <mike@gluu.org>]

Markus,

Thanks for the quick response!

1. Yes, you could have both a ! and !! arc, why not?  It doesn't seem 
inherently problematic to me.

2. yes, you're right I forgot the / for the literal arc :)

3. !! was just an idea... it could be something else.

4. Its useful to be able to differentiate binary data from other types of
   data because there persistence strategy varies greatly.


- Mike



> 1. Could you have BOTH a binary and a non-binary literal in a context? I.e.
> have a ! arc and a !! arc.
> If not, will the server throw an error if you already have one literal and
> try to add the other one?
>
> 2. In your example, wouldn't the XRI actually be @!1111*logo/!! instead of
> @!1111*logo!!  ?
>
> 3. Something is bothering me about the fact that !! is two subsegments. I
> am worried it will result in ambiguity in one way or the other.
>
> 4. I don't understand why you can't load the metadata together with the
> literal, to figure out whether it is binary or not.
> Wasn't this the whole point of what Drummond called "literal contexts"?
>
> Markus
>
> On Thu, Mar 1, 2012 at 9:49 PM, Michael Schwartz <mike@gluu.org> wrote:
>
> > XDI TC:
> >
> > I'm attaching a proposal to represent binary literal values as "!!"
> >
> > So, for example, the XRI for a my company's logo might be :
> >  @!1111*logo!!
> >
> > The fact that the image is a binary can't be represented in the metadata,
> > because it is not known which will be loaded first, the literal node, or
> > the metadata about the literal node.
> >
> > This is a critical issue to optimize persistence of binary objects, which
> > need to be indexed differently.
> >
> > I'd like to fast track this because we need to store binaries as part of
> > the oxPlus demo :)
> >
> > Thoughts?
> >
> > thx,
> >
> > - Mike
> >
> >
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