[GeoNetwork-users] Invalid GML namespace using OAI-PMH

[jandic <pj...@co...>]

Hello,

I am using GeoNetwork 2.6.4 to provide data using OAI-PMH protocol. However,
I noticed that when I use the GetRecord request using ISO19139 format, the
returned metadata record cannot be validated. This is not because the record
itself is not valid but because the GML schema namespace does not correspond
with the namespaces used in ISO19139 GeoNetwork schema definition. The
example below should explain the issue:

<gmd:MD_Metadata xmlns:gmd="http://www.isotc211.org/2005/gmd"
xmlns:gml="http://www.opengis.net/gml/3.2"
xmlns:gco="http://www.isotc211.org/2005/gco"
xmlns:gts="http://www.isotc211.org/2005/gts"
xsi:schemaLocation="http://www.isotc211.org/2005/gmd
http://metadata.biodiversityireland.ie:80/geonetwork/xml/schemas/iso19139/schema.xsd">

In the above example the gml namespace is http://www.opengis.net/gml/3.2 and
therefore using version 3.2.1 of GML specification. However, the default
ISO19139 schema definition (XSDs) in Geonetwork 2.6.4 (and previous) is
using the gml namespace http://www.opengis.net/gml/ and so using version
3.1.1 of GML specification.

The above issue causes that the metadata record as provided cannot be
validated but after I replaced the ISO19139 schema definition with the
latest specification that I downloaded, I can validate it without any
problem.

I had a look into this issue and could not found where the
http://www.opengis.net/gml/3.2 namespace is configured so I presume that is
hardcoded somewhere in GeoNetwork code. So I had to download GML schema
version 3.2.1, replace it in the ISO19139 schema definition and then fixed
all references to GML within ISO19139 schema to reference the appropriate
namespace http://www.opengis.net/gml/3.2 .

Hope this will help somebody.

Pavel



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