[auscope-geosciml] RE : reference to ISO19139 in GeoSciML 2.1 [SEC=UNCLASSIFIED]

Stephen M Richard steve.richard at azgs.az.gov
Fri Oct 8 01:28:40 EDT 2010

  Yes, the 2.1.1 schemas  on GeoSciML.org do carry the problem with the 
references to the 2007 gmd schema that uses 3.2, and that could be 
easily fixed by editing the xsds. This would result in usable schema (we 
ran into the problem trying to load the schema in Visual Studio to work 
on some client software).

about breaking the rules on versioning... hmm--tough one.  The gsml 
namespace URI is still urn:cgi:xmlns:CGI:GeoSciML:2.1.1, and the OGE 
docs use
urn:cgi:xmlns:CGI:GeoSciML:2.0 and urn:cgi:xmlns:CGI:GeoSciML:2.1.

I thought a minor release increment did not have to be backward 
compatible with previous minor releases.  Why can't we use 2.2?


On 10/7/2010 9:44 PM, Oliver.Raymond at ga.gov.au wrote:
> Hi Ben,
> Apologies.  These are the days that I have dark thoughts about giving this game away.... :-P
> All along, I have been looking at the xsd files on the subversion tag called "2.0_final".  I see now that these v2.0 schemas are not the same as those on www.geosciml.org which are v2.0.2.  The v2.0.2 schemas have all the correct 'byReference' tags and have no imports of gmd schemas (that change was made from v2.0 to v2.0.1).  So my email this morning about validation and vocabulary.xsd and earthmaterial.xsd having erroneous gmd references is bunk.
> It appears that the v2.1.1 schemas have been edited from copies of the "2.0_final" schemas, not the v2.0.2 schemas.  Hence the gmd imports wrongly appear in the v2.1.1 schemas.  That in itself is easily fixed.
> But... I have done a lot more research into v2.1.1 backward compatibility and the OGC versioning rules.  I'm pretty sure now that fixing the problems around v2.1 ShearDisplacementStructure cannot be properly done as a v2.1.1 patch release under OGC versioning rules. Our desired fix (ie, editing the v2.0 geologicStructure schema), while it is a simple fix, is not backwardly compatible with the existing v2.1 services delivered by OneGeology-Europe and is therefore illegal under OGC rules as even a minor version release (eg, v2.2).
> In conclusion, I think that the v2.1.1 schemas should be removed from www.geosciml.org , and that the fixing of the ShearDisplacementStructure bug has to wait until v3.
> Cheers,
> Ollie
> -----Original Message-----
> From: Ben Caradoc-Davies [mailto:Ben.Caradoc-Davies at csiro.au]
> Sent: Friday, 8 October 2010 2:05 PM
> To: auscope-geosciml at lists.arcs.org.au
> Cc: Raymond Oliver; Francois.Letourneau at RNCan-NRCan.gc.ca
> Subject: Re: [auscope-geosciml] RE : reference to ISO19139 in GeoSciML 2.1 [SEC=UNCLASSIFIED]
> On 08/10/10 06:37, Oliver.Raymond at ga.gov.au wrote:
>> 1.  The ISO19139 import in GeoSciML v2 is not an unused import.  The import is required for the GeoSciML v2 schemas to validate because they refer to ISO19139 MD_Metadata elements, even though those elements are "byReference" and can't be encoded inline.
> Are you sure that the import is required if the gmd elements are used
> only in appinfo? I do not think appinfo is validated. I thought it only
> had to be well formed. The gmd reference is in the text content of the
> element as well.
> This is valid:
> http://www.geosciml.org/geosciml/2.0/xsd/geologicFeature.xsd
> Kind regards,
> --
> Ben Caradoc-Davies<Ben.Caradoc-Davies at csiro.au>
> Software Engineering Team Leader
> CSIRO Earth Science and Resource Engineering
> Australian Resources Research Centre
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> auscope-geosciml at lists.arcs.org.au
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Stephen M. Richard
Arizona Geological Survey
416 W. Congress St., #100
Tucson, Arizona, 85701
phone: 520 209-4127
AZGS Main: (520) 770-3500.  FAX: (520) 770-3505
email: steve.richard at azgs.az.gov

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