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Hi Stephen, <br>
<br>
I agree with Dean, this is great. I was just thinking about doing
this today... I was going to reverse engineer the thredds catalog
xml into an xsd of only thing things we represent in our catalogs.
But I see you have embarked on this mission so have at it, let me
know what I can do to help. Estani and I have talked about this for
a while - the need for a succinct (hand waving) and explicit grammar
for catalogs. I like that you are moving along with the
header(mutable)/body(immutable) approach. I believe it is the right
thing to do. There is a data location structural issue that will
come up i.e. "dataspace" level file system description - eh ehm
(DRS) - I have been anticipating this as I've been push for a
canonical catalog description. It will dove tail into this effort
later.<br>
<br>
I believe we need to have a canonical catalog and a description of
such that is germane to how *we* use the data now and future.<br>
To get there... <br>
<br>
- "xsd" of catalog <br>
- canonical dataspace "filesystem" description<br>
<br>
Stephen, if there isn't already a working group on the esgf.org
wiki, please make one.<br>
<br>
P.S.<br>
I cross posted to the esgf-devel list to get some other technical
eyes on this as well.<br>
<br>
On 3/12/12 4:48 AM, <a class="moz-txt-link-abbreviated" href="mailto:stephen.pascoe@stfc.ac.uk">stephen.pascoe@stfc.ac.uk</a> wrote:
<blockquote
cite="mid:4C353E6E4A08AE4792B350DAA392B521267628D4@EXCHMBX01.fed.cclrc.ac.uk"
type="cite">
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<p class="MsoNormal">Dear all,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">There has been lots of discussion recently
about future possibilities for the ESGF dataset architecture.
Therefore I'm sharing an early draft of a document to define
the relationship between ESGF and THREDDS XML. There are
still many missing pieces and inconsistencies to address but I
hope it's in a shape suitable for discussion. In various
places I'll need help to clarify how THREDDS is being used.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">In the final section I take a stab at a
dataset representation independent of THREDDS that could be
used to create hash-based dataset identifiers which is of
direct relevance to the recent CMIP6+ thread.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Comments welcome.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Cheers,<o:p></o:p></p>
<p class="MsoNormal">Stephen.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size: 10.5pt;
font-family: Consolas;">---<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 10.5pt;
font-family: Consolas;">Stephen Pascoe +44 (0)1235 445980<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 10.5pt;
font-family: Consolas;">Centre of Environmental Data
Archival<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 10.5pt;
font-family: Consolas;">STFC Rutherford Appleton Laboratory,
Harwell Oxford, Didcot OX11 0QX, UK<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<br>
<p>-- <br>
Scanned by iCritical.
</p>
<br>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Gavin M. Bell
--
"Never mistake a clear view for a short distance."
-Paul Saffo
</pre>
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