[WFS provider] Succesfully analyze DescribeFeatureType response with <complexType> as inline element of <element> (#15395)

src/providers/wfs/qgswfsprovider.cpp

@@ -1161,17 +1161,23 @@ bool QgsWFSProvider::readAttributesFromSchema( QDomDocument& schemaDoc,
   // collect the correspond type.
   QDomElement elementElement = schemaElement.firstChildElement( "element" );
   QString elementTypeString;
+  QDomElement complexTypeElement;
   while ( !elementElement.isNull() )
   {
     QString name = elementElement.attribute( "name" );
     if ( name == unprefixedTypename )
     {
       elementTypeString = elementElement.attribute( "type" );
+      if ( elementTypeString.isEmpty() )
+      {
+        // e.g http://afnemers.ruimtelijkeplannen.nl/afnemers2012/services?SERVICE=WFS&REQUEST=DescribeFeatureType&VERSION=2.0.0&TYPENAME=app:Bouwvlak
+        complexTypeElement = elementElement.firstChildElement( "complexType" );
+      }
       break;
     }
     elementElement = elementElement.nextSiblingElement( "element" );
   }
-  if ( elementTypeString.isEmpty() )
+  if ( elementTypeString.isEmpty() && complexTypeElement.isNull() )
   {
     // "http://demo.deegree.org/inspire-workspace/services/wfs?SERVICE=WFS&REQUEST=DescribeFeatureType&VERSION=2.0.0&TYPENAME=ad:Address"
     QDomElement iter = schemaElement.firstChildElement();
@@ -1206,21 +1212,24 @@ bool QgsWFSProvider::readAttributesFromSchema( QDomDocument& schemaDoc,
     elementTypeString = elementTypeString.section( ':', 1 );
   }
 
-  //the <complexType> element corresponding to the feature type
-  QDomElement complexTypeElement = schemaElement.firstChildElement( "complexType" );
-  while ( !complexTypeElement.isNull() )
-  {
-    QString name = complexTypeElement.attribute( "name" );
-    if ( name == elementTypeString )
-    {
-      break;
-    }
-    complexTypeElement = complexTypeElement.nextSiblingElement( "complexType" );
-  }
   if ( complexTypeElement.isNull() )
   {
-    errorMsg = tr( "Cannot find ComplexType element '%1'" ).arg( elementTypeString );
+    //the <complexType> element corresponding to the feature type
-    return false;
+    complexTypeElement = schemaElement.firstChildElement( "complexType" );
+    while ( !complexTypeElement.isNull() )
+    {
+      QString name = complexTypeElement.attribute( "name" );
+      if ( name == elementTypeString )
+      {
+        break;
+      }
+      complexTypeElement = complexTypeElement.nextSiblingElement( "complexType" );
+    }
+    if ( complexTypeElement.isNull() )
+    {
+      errorMsg = tr( "Cannot find ComplexType element '%1'" ).arg( elementTypeString );
+      return false;
+    }
   }
 
   //we have the relevant <complexType> element. Now find out the geometry and the thematic attributes

tests/src/python/test_provider_wfs.py

@@ -2102,6 +2102,94 @@ class TestPyQgsWFSProvider(unittest.TestCase, ProviderTestCase):
     </gml:featureMember>
 </wfs:FeatureCollection>
 
+""".encode('UTF-8'))
+
+        vl = QgsVectorLayer(u"url='http://" + endpoint + u"' typename='my:typename' version='1.1.0'", u'test', u'WFS')
+        assert vl.isValid()
+
+        got_f = [f for f in vl.getFeatures()]
+        got = got_f[0].geometry().geometry()
+        self.assertEqual((got.x(), got.y()), (2.0, 49.0))
+
+    def testDescribeFeatureTypeWithInlineType(self):
+        """Test a DescribeFeatureType response with a inline ComplexType (#15395)."""
+
+        endpoint = self.__class__.basetestpath + '/fake_qgis_http_endpoint_testDescribeFeatureTypeWithInlineType'
+
+        with open(sanitize(endpoint, '?SERVICE=WFS?REQUEST=GetCapabilities?VERSION=1.1.0'), 'wb') as f:
+            f.write("""
+<wfs:WFS_Capabilities version="1.1.0" xmlns="http://www.opengis.net/wfs" xmlns:wfs="http://www.opengis.net/wfs" xmlns:ogc="http://www.opengis.net/ogc" xmlns:ows="http://www.opengis.net/ows" xmlns:gml="http://schemas.opengis.net/gml">
+  <FeatureTypeList>
+    <FeatureType>
+      <Name>my:typename</Name>
+      <Title>Title</Title>
+      <Abstract>Abstract</Abstract>
+      <DefaultCRS>urn:ogc:def:crs:EPSG::4326</DefaultCRS>
+      <ows:WGS84BoundingBox>
+        <ows:LowerCorner>2 49</ows:LowerCorner>
+        <ows:UpperCorner>2 49</ows:UpperCorner>
+      </ows:WGS84BoundingBox>
+    </FeatureType>
+  </FeatureTypeList>
+</wfs:WFS_Capabilities>""".encode('UTF-8'))
+
+        with open(sanitize(endpoint, '?SERVICE=WFS&REQUEST=DescribeFeatureType&VERSION=1.1.0&TYPENAME=my:typename'), 'wb') as f:
+            f.write("""
+<schema
+   targetNamespace="http://my"
+   xmlns:my="http://my"
+   xmlns:ogc="http://www.opengis.net/ogc"
+   xmlns:xsd="http://www.w3.org/2001/XMLSchema"
+   xmlns="http://www.w3.org/2001/XMLSchema"
+   xmlns:gml="http://www.opengis.net/gml"
+   elementFormDefault="qualified" version="0.1" >
+  <import namespace="http://www.opengis.net/gml"
+          schemaLocation="http://schemas.opengis.net/gml/3.1.1/base/gml.xsd" />
+  <element name="typename"
+           substitutionGroup="gml:_Feature">
+    <complexType>
+      <complexContent>
+        <extension base="gml:AbstractFeatureType">
+          <sequence>
+            <element name="geometryProperty" type="gml:GeometryPropertyType" minOccurs="0" maxOccurs="1"/>
+          </sequence>
+        </extension>
+      </complexContent>
+    </complexType>
+  </element>
+</schema>
+""".encode('UTF-8'))
+
+        with open(sanitize(endpoint, """?SERVICE=WFS&REQUEST=GetFeature&VERSION=1.1.0&TYPENAME=my:typename&SRSNAME=urn:ogc:def:crs:EPSG::4326"""), 'wb') as f:
+            f.write("""
+<wfs:FeatureCollection
+   xmlns:my="http://my"
+   xmlns:gml="http://www.opengis.net/gml"
+   xmlns:wfs="http://www.opengis.net/wfs"
+   xmlns:ogc="http://www.opengis.net/ogc">
+      <gml:boundedBy>
+        <gml:Envelope srsName="EPSG:4326">
+            <gml:lowerCorner>49.000000 2.000000</gml:lowerCorner>
+            <gml:upperCorner>49.000000 2.000000</gml:upperCorner>
+        </gml:Envelope>
+      </gml:boundedBy>
+    <gml:featureMember>
+      <my:typename gml:id="typename.1">
+        <gml:boundedBy>
+            <gml:Envelope srsName="EPSG:4326">
+                <gml:lowerCorner>49.000000 2.000000</gml:lowerCorner>
+                <gml:upperCorner>49.000000 2.000000</gml:upperCorner>
+            </gml:Envelope>
+        </gml:boundedBy>
+        <my:geometryProperty>
+          <gml:Point srsName="EPSG:4326">
+            <gml:pos>49.000000 2.000000</gml:pos>
+          </gml:Point>
+        </my:geometryProperty>
+      </my:typename>
+    </gml:featureMember>
+</wfs:FeatureCollection>
+
 """.encode('UTF-8'))
 
         vl = QgsVectorLayer(u"url='http://" + endpoint + u"' typename='my:typename' version='1.1.0'", u'test', u'WFS')