illegal/unrecommended use of IVOA identifiers
rplante at poplar.ncsa.uiuc.edu
Sun Nov 5 23:06:30 PST 2006
Hi John et al.
I don't know if this has been pointed out to you or not; however, the
Plastic Specification is using IVOA identifiers in a non-standard way to
identify its messages.
The IVOA Identifiers specification
(http://www.ivoa.net/Documents/latest/IDs.html) states that the
use of the ivo indicates that the identifier has been registered with an
IVOA registry (section 3.2.2).
To be compliant, each of the Plastic message identifiers would have to be
registered as a separate resource. While in principle this is possible,
this is highly discouraged. Instead, I would recommend the approach
that is to be used by the VOSpace standard in which names are identified
using a # suffix; e.g.,
For use of an identifier of this form to be compliant, only the
ivo://votech.org/plastic resource need be registered. We have a new
schema we are putting forward for this purpose called VOStandard
It defines two new Resource sub-classes, Standard and StandardService,
that registers the existance of a standard; the former is probably most
appropriate for Plastic. These types do not currently provide metadata
for defining what I might call properties (e.g. info/getIVORN); however,
we should probably add that. Note that the standard being described need
not be an IVOA standard.
Please let me know if you have any comment or suggestions on this front.
The Registry WG is the WG that handles the Identifier standard.
More information about the registry