W3C home > Mailing lists > Public > semantic-web@w3.org > September 2010

Re: RDF data handover and dereferenceable URIs

From: Alan Ruttenberg <alanruttenberg@gmail.com>
Date: Thu, 23 Sep 2010 15:24:12 -0400
Message-ID: <AANLkTikNr8wiva47LsWG_G7LseSG0MV-QiQ9-1srAOVB@mail.gmail.com>
To: Rahul Patil <rahulpatil12@gmail.com>
Cc: David Booth <david@dbooth.org>, Semantic Web Interest Group <semantic-web@w3.org>
On Thu, Sep 23, 2010 at 6:08 AM, Rahul Patil <rahulpatil12@gmail.com> wrote:
> Thanks for your reply David.
> The thing with PURL is that
> We are not sure if it will scale to millions of triples industry will be
> churning out.
> and also once we commit to PURL it needs to be around even if triples are at
> the final endpoint (e.g. with international standard endpoint)
> Is there a way to use PURL during the stages when endpoints are changing but
> switch to actual endpoint address (and hence the namespace) when they reach
> the final endpoint?

We have used purl.org by creating domain name of our own
(purl.obolibrary.org) and having it be a CNAME for purl.org.
In order to do this you need to communicate with the purl.org folks
and check if they don't mind configuring their apache setup to
recognize the virtual hot.

Do you have any reason to believe that purl.org won't scale? You might
discuss it with them to see what they thing.

The new version of purl was supposed to be designed to support
federation of purl servers. We're looking into this
(we=sharedname.org) but haven't had time to test the new server yet.


> thanks,
> rahul
> On Wed, Sep 22, 2010 at 10:01 AM, David Booth <david@dbooth.org> wrote:
>> On Wed, 2010-09-22 at 09:31 +0530, Rahul Patil wrote:
>> > Now the question is: how to keep a URI dereferenceable while it moves
>> > from one physical endpoint to other through the standardization
>> > process?
>> > [ . . . ]
>> > I can think of some ways like maintaining a separate server to
>> > redirect abstract URIs or using something like PURL
>> > (http://purl.org/docs/index.html) but want to check with this group
>> > before committing  to a solution.
>> >
>> PURLs are the best solution that I know.  Furthermore, using partial
>> redirects
>> http://www.purl.org/docs/long_intro.html#partial
>> you can even have your URIs point to private servers inside your
>> firewall if you want, for example before you are ready to publish your
>> ontology, and then move it to a public server when you're ready to
>> publish it.  By changing the partial redirection the URIs will not have
>> to be changed.
>> >
>> --
>> David Booth, Ph.D.
>> Cleveland Clinic (contractor)
>> http://dbooth.org/
>> Opinions expressed herein are those of the author and do not necessarily
>> reflect those of Cleveland Clinic.
Received on Thursday, 23 September 2010 19:30:05 UTC

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