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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Luca,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Is there really a requirement that all XML attributes in a namespace are pre-defined? Use of an XML namespace does not imply an XML schema. I think this is
a fuzzy area.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">There is overlap here with the Information Architecture (aka Data Model Group). In CMIP5 we have defined a set of facets that act as our identifiers (The DRS
facets). There is a good argument for controlling these in some way -- maybe an explicit XML namespace is that way. Some facets aren't part of the dataset identifier so needn't be pre-defined.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I would prefer as structured a syntax as possible for addressing these sets of datasets The QC use case needs to be precise about what it is referring to --
more so than the use-case of a user searching for stuff.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Note I'm trying to use one term for these things we call facets. Let's ditch the attribute/property/component confusion. I think facet fits.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:Consolas;color:#1F497D">---<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.5pt;font-family:Consolas;color:#1F497D">Stephen Pascoe +44 (0)1235 445980<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.5pt;font-family:Consolas;color:#1F497D">Centre of Environmental Data Archival<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.5pt;font-family:Consolas;color:#1F497D">STFC Rutherford Appleton Laboratory, Harwell Oxford, Didcot OX11 0QX, UK<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Cinquini, Luca (3880) [mailto:Luca.Cinquini@jpl.nasa.gov]
<br>
<b>Sent:</b> 07 June 2011 15:31<br>
<b>To:</b> Pascoe, Stephen (STFC,RAL,RALSP)<br>
<b>Cc:</b> go-essp-tech@ucar.edu<br>
<b>Subject:</b> Re: [Go-essp-tech] [ESGF-Search] Opensearch and XML representation of a search query<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hi Stephen,<o:p></o:p></p>
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<p class="MsoNormal"><span class="apple-tab-span"> </span>you are lucky, the exact query details will be under discussion on Thursday...<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">That said, I personally do think we should try to express our query service in term of OpenSearch. Wether or not we want to use the OS extensibility mechanism is under discussion...<o:p></o:p></p>
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<p class="MsoNormal">The query you represent below would be a very good way to advertise the service query syntax, the only drawback is that you would need to upgrade the ESGF schema for every new facet that becomes part of the system. A more dynamic approach
would be to encode all terms within the standard "q" parameter, i.e.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><a href="http://somehost/search/q=">http://somehost/search/q=</a>"climate activity:cmip5 product:output institute:MTEST model:ECHAM experiment:amip"<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">versus<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><a href="http://somehost/search/q=climate&activity=cmip5&product=output&institute=MTEST&model=ECHAM&experiment=AMIP">http://somehost/search/q=climate&activity=cmip5&product=output&institute=MTEST&model=ECHAM&experiment=AMIP</a><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">But we are spoiling all the fun for Thursday...<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Luca<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Jun 7, 2011, at 8:21 AM, <<a href="mailto:stephen.pascoe@stfc.ac.uk">stephen.pascoe@stfc.ac.uk</a>> wrote:<o:p></o:p></p>
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<br>
<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">In off-list discussions about QC we've found we need to attach QC documents to data at the simulation level. This would seem to be semantically similar to selecting all
datasets for a given activity/product/institute/model/experiment which could be viewed as a query.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Unfortunately I wasn't on the Search API call yesterday but I hear OpenSearch has been floated as an implementation-neutral interface. What about using OpenSearch's XML
Query syntax for representing this? E.g.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:Consolas"><Query xmlns="<a href="http://a9.com/-/spec/openseaerch/1.1/">http://a9.com/-/spec/openseaerch/1.1/</a>"<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:Consolas"> xmlns:esgf="<a href="http://esgf.org/ns/search/">http://esgf.org/ns/search/</a>"<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:Consolas"> role="request"<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:Consolas"> esgf:activity="cmip5"<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:Consolas"> esgf:product="output"<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:Consolas"> esgf:institute="MTEST"<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:Consolas"> esgf:model="ECHAM6-MPIOM-TR"<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:Consolas"> esgf:experiment="amip"/><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Cheers,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Stephen.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:Consolas">---</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:Consolas">Stephen Pascoe +44 (0)1235 445980</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:Consolas">Centre of Environmental Data Archival</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:Consolas">STFC Rutherford Appleton Laboratory, Harwell Oxford, Didcot OX11 0QX, UK</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:13.5pt;font-family:"Helvetica","sans-serif""><o:p> </o:p></span></p>
<p><span style="font-size:13.5pt;font-family:"Helvetica","sans-serif"">--<span class="apple-converted-space"> </span><br>
Scanned by iCritical.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:13.5pt;font-family:"Helvetica","sans-serif""><br>
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<p class="MsoNormal"><o:p> </o:p></p>
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