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

My counter proposal is that everything
you say is good except that I think it should be on $data not on $type.
It seems to me if we aren't going to coin a phrase that is explicitly $datatype
that what we are talking about is specifying a constraint, or rule, about
the $data. Rules about $type are defined in the dictionary.

Andy Dale

ooTao

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"Drummond Reed"
<> 

06/29/2005 08:59 PM

To

<>

cc

Subject

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

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:  [mailto:] 

Sent: Wednesday, June 29, 2005 7:25 PM

To: 

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.