Validation error: gml:description not allowed

[ilkkarinne]

The basic GML object properties like gml:description, gml:name, gml:boundedBy should be allowed in all feature type elements like SpatialPlan, PlanOrder, PlanObject and PlanRecommendation by the used XML Schema, as they are inherited from their supertypes gml:AbstractGMLType and gml:AbstractFeatureType. However, using gml:description for example returns a schema validation error.

The reason for the error is that the code adds the generated elements gml:identifier and lud-core:objectIdentifier as the first child elements of the container element, thus moving the gml:description in the wrong place. As per the GML XML Schema, the gml:identifier element must become after any gml:description element:

       <group name="StandardObjectProperties">
		<sequence>
			<element ref="gml:metaDataProperty" minOccurs="0" maxOccurs="unbounded"/>
			<element ref="gml:description" minOccurs="0"/>
			<element ref="gml:descriptionReference" minOccurs="0"/>
			<element ref="gml:identifier" minOccurs="0"/>
			<element ref="gml:name" minOccurs="0" maxOccurs="unbounded"/>
		</sequence>
	</group>

.. and any gml:boundedBy and gml:location before any lud-core elements:

<complexType name="AbstractFeatureType" abstract="true">
		<annotation>
			<documentation>The basic feature model is given by the gml:AbstractFeatureType.
The content model for gml:AbstractFeatureType adds two specific properties suitable for geographic features to the content model defined in gml:AbstractGMLType. 
The value of the gml:boundedBy property describes an envelope that encloses the entire feature instance, and is primarily useful for supporting rapid searching for features that occur in a particular location. 
The value of the gml:location property describes the extent, position or relative location of the feature.</documentation>
		</annotation>
		<complexContent>
			<extension base="gml:AbstractGMLType">
				<sequence>
					<element ref="gml:boundedBy" minOccurs="0"/>
					<element ref="gml:location" minOccurs="0"/>
				</sequence>
			</extension>
		</complexContent>
	</complexType>

Snippet of the tested document:

 <lud-core:featureMember>
        <splan:PlanObject gml:id="KAAVAKOHDE-AJO-12">
        <gml:description>foobar</gml:description>
            <lud-core:producerSpecificIdentifier>AK_SIPOO_5_lainvoimainen_kaava_sipoo_nevasgard.7</lud-core:producerSpecificIdentifier>
            <splan:geometry>
...

Error:

{
  "detail": [
    {
      "loc": [
        "XML"
      ],
      "msg": "Failed to validate XML against schema! Reason: failed validating <Element {http://tietomallit.ymparisto.fi/kaavatiedot/xml/1.2}PlanObject at 0x7ff6b8116400> with XsdGroup(model='sequence', occurs=[1, 1]):

Reason: Unexpected child with tag 'gml:description' at position 3. Tag 'splan:geometry' expected.

Schema:

<complexType xmlns=\"http://www.w3.org/2001/XMLSchema\" xmlns:default=\"http://www.opengis.net/gml/3.3/exr\" name=\"PlanObjectType\">
<complexContent>
      <extension base=\"splan:AbstractPlanObjectType\">
        <sequence>
          
          <element minOccurs=\"0\" name=\"bindingnessOfLocation\" type=\"gml:ReferenceType\">
            <annotation>
              <appinfo>
                <default:targetCodeList>Sitovuuslaji</default:targetCodeList>
              </appinfo>
            </annotation>
          </element>
          <element maxOccurs=\"unbounded\" minOccurs=\"0\" name=\"relatedInputDataObjectIdentifier\" type=\"anyURI\" />
          <element minOccurs=\"0\" name=\"environmentalChangeType\" type=\"gml:ReferenceType\">
            <annotation>
              <appinfo>
                <default:targetCodeList>AbstraktiYmparistomuutoksenLaji</default:targetCodeList>
              </appinfo>
            </annotation>
          </element>
    ...
    ...
  </complexType>

Instance (line 144):

  <splan:PlanObject xmlns:splan=\"http://tietomallit.ymparisto.fi/kaavatiedot/xml/1.2\" xmlns:gml=\"http://www.opengis.net/gml/3.2\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" xmlns:gmlexr=\"http://www.opengis.net/gml/3.3/exr\" xmlns:lsp=\"http://tietomallit.ymparisto.fi/ry-yhteiset/kielituki/xml/1.0\" xmlns:lud-core=\"http://tietomallit.ymparisto.fi/mkp-ydin/xml/1.2\" gml:id=\"id-1e592826-f8a8-46fb-ae5d-b76259477b09.1c7c3af8-b707-4be6-a5d7-75140912d239\">
  <gml:identifier codeSpace=\"http://uri.suomi.fi/object/rytj/kaava\">PlanObject/id-1e592826-f8a8-46fb-ae5d-b76259477b09.1c7c3af8-b707-4be6-a5d7-75140912d239</gml:identifier>
<lud-core:objectIdentifier>id-1e592826-f8a8-46fb-ae5d-b76259477b09</lud-core:objectIdentifier
<gml:description>foobar</gml:description>
      <lud-core:producerSpecificIdentifier>AK_SIPOO_5_lainvoimainen_kaava_sipoo_nevasgard.7</lud-core:producerSpecificIdentifier>
      <lud-core:storageTime><gml:TimeInstant><gml:timePosition>2023-06-14T09:07:49+00:00</gml:timePosition></gml:TimeInstant></lud-core:storageTime><splan:geometry>
          <gml:Polygon srsName=\"urn:ogc:def:crs:EPSG::4326\" gml:id=\"AK_SIPOO_5_lainvoimainen_kaava_sipoo_nevasgard.geom.7\">
              <gml:exterior>
                  <gml:LinearRing>
                      <gml:posList>60.2893418 25.430357 60.2894259 25.4304633 60.2894444
                          25.4303376 60.2895416 25.4298993 60.2895686 25.4298493 60.2894865
                          25.4297044 60.2893418 25.430357</gml:posList>
                  </gml:LinearRing>
              </gml:exterior>
          </gml:Polygon>
      </splan:geometry>
      <splan:spatialPlan xlink:href=\"#id-7eae86e2-bbe3-413f-b833-cda1edd7f685.c4deb9e2-ceac-485c-b7df-adb3866fe59a\"/>
      <splan:bindingnessOfLocation xlink:href=\"http://uri.suomi.fi/codelist/rytj/RY_Sitovuuslaji/code/02\" xlink:title=\"Ohjeellinen\"/>
  </splan:PlanObject>

Path: /lud-core:LandUseFeatureCollection/lud-core:featureMember[2]/splan:PlanObject
",
      "type": "verify_error"
    }
  ]
}