Allen,
I'm also a bit concerned about this. I apologise,
because I didn't realise when we were discussing this on the call that
you had taken the action to make this change - I was in too much of a hurry to
move on to the next item. My concern is that I don't know what it means to
"return the data", in a context where we have several
possible interfaces for accessing data, including ByteIO and the various
DAIS specs, each of which operate on names.
I don't think I understand Dieter's suggestion sufficiently
well to see how it would affect the overall architecture. It certainly
sounds an interesting idea and if we can incorporate it simply then that's all
to the good, but I'd rather we had a longer talk with Dieter
first.
Best wishes,
Dave.
Peter's mail bounced.
Allen
----- Forwarded by Allen Luniewski/Almaden/IBM on
03/16/2006 08:54 AM -----
Message-ID:
<20570961.451142526276621.OPEN-XCHANGE.WebMail.tomcat@sala.cscs.ch>
Date:
Thu, 16 Mar 2006 17:24:36 +0100 (CET)
From: Peter Kunszt
<pkunszt@cscs.ch>
To: ogsa-d-wg@ggf.org
Subject: Re: [ogsa-d-wg]
Discovery Service - Returning Data
hi allen
i don't know..
i get an uneasy feeling when service discovery
is mixed with ontologies and
content. to me, e.g. DNS is service
discovery already,
and certainly it
does not give me the semantics or content of the
service. i
would separate
any kind of content retrieval from service discovery, it
feels
'cleaner'
for a SOA. otherwise i'm afraid service discovery will be too
large
a
beast to manage..
just my swiss
2cents...
cheers
peter
-----Urspr=C3=BCngliche
Nachricht-----
Von: owner-ogsa-d-wg@ggf.org im Auftrag von Allen
Luniewski
Gesendet: Mi 15.03.2006 18:26
An: ogsa-d-wg@ggf.org
Betreff:
[ogsa-d-wg] Discovery Service - Returning Data
=C2=A0
At today's call, I
took on an action to update the discovery service
section to allow for
discovery services that returned the data of
interest
rather than a
reference to the data.=C2=A0 Here is the updated material for
your=C2=A0
consideration:
Resource Discovery
Discovery services are vital to the data
architecture.=C2=A0 The data
services
may use the discovery services not
just for registering services
themselves, but also for registering the data
sets that are stored by
those services. This requires languages or ontologies
for describing
data.
Discovery services may also register the locations of
schema
definitions.
Discovery services may be built upon metadata
repositories that contain
information about other entities in the grid such
as resources, and
services.=C2=A0 Some discovery services may return the name
of the service
and
some may return an EPR to the service.=C2=A0 Some
discovery services may ta=
ke
a
description of the desired data as
input and return the data
itself.
Allen