Re: [Handle-info] local types via special subprefix question

[Larry Lannom <llannom@cnri.reston.va.us>]

Hi,

The simple answer to the simple question is that all prefixes,  
including sub-prefixes, do need to be registered in Global. That is  
both the way the system works and it is part of the license agreement.

Beyond that is the question of using handles to identify types. This  
is a fairly common practice among developers, who have a natural  
tendency to invent types. There are some common types registered  
under the 0.TYPE and then various projects define their own local  
types and frequently register them as handles. Using that handle as  
the type string then gives the advantage of having a bit of a  
bootstrap for understanding the type.

All of this is currently the topic of a future policy that is being  
developed by the Handle System Advisory Committee. The current plan,  
not yet fully developed, is to establish a searchable registry of  
types to which people could contribute, if they so wanted. No type  
police or anything along those lines, but if you invent a type which  
you think others may find useful, and for which you might want to  
develop a community of use, then such a voluntary registration should  
appeal to you. The only criteria would probably be that it was in use  
at some level and that it could be explained.

Comments certainly welcome on what attributes would be attached to  
each type in such a registry. So far we are considering fairly simple  
things like a natural language explanation of the purpose and use of  
the type, contact information for those who are thought it up,  
related types, and possibly related services, e.g., rendering proxies.

If and when such a registry comes into existence, it will certainly  
be announced on this list.

Larry

On Jul 11, 2007, at 10:02 AM, Konstantin Rekk wrote:

> Hello,
>
> in one of the examples send to this list I see that handles are  
> used to
> define local typing
> 100.TYPES/REGISTRY.ADMIN
> and by this introducing a kind of local schema definition for the  
> handle
> servers layout.
>
> This subprefixes (like 100.TYPES) must probably be registered? But I
> guess this types will not need global resolution and are for local
> technical use only.
>
> My question is - if it is possible to home local only used technical,
> schema related subprefixes without global registration within the same
> server? Of course one could go for other definition syntax like
> 100/TYPE-... or similiar avoiding subprefix notation, but it seems  
> to me
> to be more consistent to use the community way. Are there any
> recommendations or best practises regarding this or similiar issues?
>
> Thanks!
>
> Konstantin
>
> --
> Konstantin Rekk
> VZG (GBV), Göttingen, Berlin
> 0176 2100 6000
> 030 29003511
> skype: krekk1970
> rekk@gbv.de
> http://www.gbv.de
>
>
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=========================================
Larry Lannom
Director of Information Management Technology
Corporation for National Research Initiatives (CNRI)
Suite 100, 1895 Preston White Dr, Reston, VA 20191

email:  llannom@cnri.reston.va.us
web: www.cnri.reston.va.us
tel:  703 620 8990


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