RE: [xdi] Dollar word proposed for data types-$type

["Drummond Reed" <drummond.reed@cordance.net>]

Cool idea. $type is already one of our "default dollar words" by virtue of
being one of the XDI schema elements. And at first blush this seems like a
good use of it. I also like the idea of making the fragment identifiers in
the W3C Schema Datatypes spec the default. 

I also suggest we go with true hierarchy, i.e., slash. This is what we did
with $l in the XRI Metadata spec - slash delineates the instances of the
type, whereas * delegates to subtypes. For example with $l, the immediate
children (i.e., if there is no delegated *name after $l) are defined to be
two-letter language tags from (I forget the name of the RFC - see the spec
at
http://www.oasis-open.org/committees/download.php/11854/xri-metadata-V2.0-cd
-01.pdf). For example:

	$l/en		for English
	$l/fr		for French

So with the $type space, we would specify (in the Service Dictionary spec)
that the default child namespace under $type is the set of fragment
identifier in the W3C Schema datatypes spec.

	$type/string
	$type/float

Then you could extend type definition to any other namespace as follows:

	$type*(=foo/mytypes)/custom.type

Sure meets the simplicity test. Thoughts?

=Drummond 

-----Original Message-----
From: barnhill_william@bah.com [mailto:barnhill_william@bah.com] 
Sent: Wednesday, June 29, 2005 7:25 PM
To: xdi@lists.oasis-open.org
Subject: [xdi] Dollar word proposed for data types-$type

$type-xxx where xxx is the fragment identifier from the W3C schema datatype
or $type-yyy-xxx where yyy is the ident for a type system other than W3C
schema datatypes.