Hi,
Now looking at the "simpleXPathType" (used by the node's path attribute) it seems that the string restriction does not allow for namespace prefixes. So I guess this is something that needs to be fixed in the schema.
Actually the problem with the simpleXpathType arise when I did the example outputModel, it does not validate against the schema because I used ns prefixes.
Maybe my sentence was incorrect, I wanted to say "The change in the mapping section is only in allowing (forcing?) qualifies paths in the node element"
Actually I think pywrapper would not complain of the lack of ns prefixes there (probably the other way around :D ), but in the unlikely event that the ns resolve ambiguities then we are in troubles.
And actually I don't know why this path can not be an xpath. pywrapper and Digir will not be able to undertand complicate xpaths, but maybe other implementations can, and I don't see what is the problem if the provider arise and error like "Sorry xpath in the mapping section of the outputModel not understood".
Imagine a TAPIR implementation that allows you to do a mapping to the second element </a>using xpath expressions. We would be able to do mappings to structures like:
<a> <b/> <b>content here</b> </a>
So here is my proposal: change the simpleXPathType to a proper XpathType.
Javier.
Best Regards,
Renato
On 2 Mar 2006 at 17:11, Javier de la Torre wrote:
Uhmm...
Did I understand this incorrectly? The change in the mapping would only be qualifying concepts in the path attribute not in the concept ids.
I think we agree on that the concept ids does not have anything to do with XML schema or Xpaths no? Is just "by coincide" that we are using something "similar".
Javier.
On 3/3/06, Renato De Giovanni renato@cria.org.br wrote:
Hi Markus,
This is really good news for the PyWrapper!
Now concerning your question, I think we should really try to avoid defining concepts with compound XML schemas. It's a lot cleaner and more elegant using gcp#accession/FullScientificName to map local databases and to use in filters. As you said, the WFS response would just be one of the possible output models making use of the concepts.
The real xpaths to WFS elements (including namespaces) would only be used in the output model mapping section:
<node path="/wfs:FeatureCollection/gml:featureMember/gcp:accession/ gcp:FullS cientificName">
<concept id="gcp#accession/FullScientificName"/> </node>
Best Regards,
Renato
On 28 Feb 2006 at 11:38, "Döring, Markus" wrote:
Hello, I recently added support for schema imports in pywrapper mainly to support multiple namespaces in the repsonse. Me (and Javier) wanted to allow something like this:
<wfs:FeatureCollection xmlns:wfs="http://www.opengis.net/wfs" xmlns:gml="http://www.opengis.net/gml" xmlns:gcp="http://www.ipgri.org/schemas/gcp_passport_gml/1.0%22%3E gml:featureMember <gcp:accession fid="accession.12"> gcp:GermplasmID12</gcp:GermplasmID> gcp:FAOInstituteCodeES</gcp:FAOInstituteCode> gcp:FullScientificNameQuercus ilex</ gcp:FullScientificName> </gcp:accession> </gml:featureMember> </wfs:FeatureCollection>
Here comes my problem: How do we refer to the FullScientificName concept in TAPIR?
As a convention for schemas we said to create the fully qualified concept from the namespace and the simple xpath to the element. So somethinkg like this:
http://www.opengis.net/wfs#/FeatureCollection/featureMember/ accession/FullScientificName
A real xpath to that element would of course include several namespaces: /wfs:FeatureCollection/gml:featureMember/gcp:accession/ gcp:FullScientificName
Could it be that we never need to refer to "compound" concepts anyway? A provider would probably map his db to the GCP schema alone. The WFS response is only the responded view/data model and we would still just use gcp#accession/FullScientificName as the qualified concept in filters. This is also true for our simple extension schemas I think (EFG for ABCD, all extensions for DwC). But arent there other cases?
Thanks, Markus
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