Server WFS: handle axis orientation

Fixes #36584

Cherry-picked from master 84f61ff.

src/core/qgsogcutils.cpp

@@ -141,9 +141,28 @@ QgsGeometry QgsOgcUtils::geometryFromGML( const QDomNode &geometryNode, const Co
 
     if ( geometryTypeElement.hasAttribute( QStringLiteral( "srsName" ) ) )
     {
-      geomSrs.createFromString( geometryTypeElement.attribute( QStringLiteral( "srsName" ) ) );
+      QString srsName { geometryTypeElement.attribute( QStringLiteral( "srsName" ) ) };
+
+      // The logic here follows WFS GeoServer conventions from https://docs.geoserver.org/latest/en/user/services/wfs/axis_order.html
+      const bool ignoreAxisOrientation { srsName.startsWith( QStringLiteral( "http://www.opengis.net/gml/srs/" ) ) || srsName.startsWith( QStringLiteral( "EPSG:" ) ) };
+
+      // GDAL does not recognise http://www.opengis.net/gml/srs/epsg.xml#4326 but it does
+      // http://www.opengis.net/def/crs/EPSG/0/4326 so, let's try that
+      if ( srsName.startsWith( QStringLiteral( "http://www.opengis.net/gml/srs/" ) ) )
+      {
+        const auto parts { srsName.split( QRegularExpression( QStringLiteral( R"raw(/|#|\.)raw" ) ) ) };
+        if ( parts.length() == 10 )
+        {
+          srsName = QStringLiteral( "http://www.opengis.net/def/crs/%1/0/%2" ).arg( parts[ 7 ].toUpper(), parts[ 9 ] );
+        }
+      }
+      geomSrs.createFromUserInput( srsName );
       if ( geomSrs.isValid() && geomSrs != context.layer->crs() )
       {
+        if ( geomSrs.hasAxisInverted() && ! ignoreAxisOrientation )
+        {
+          geometry.get()->swapXy();
+        }
         const QgsCoordinateTransform transformer { geomSrs, context.layer->crs(), context.transformContext };
         try
         {

src/server/services/wfs/qgswfstransaction.cpp

@@ -716,7 +716,7 @@ namespace QgsWfs
       catch ( QgsOgcServiceException &ex )
       {
         action.error = true;
-        action.errorMsg = QStringLiteral( "%1 '%2'" ).arg( ex.message() ).arg( typeName );
+        action.errorMsg = QStringLiteral( "%1 '%2'" ).arg( ex.message(), typeName );
         continue;
       }
 

src/server/services/wfs/qgswfstransaction_1_0_0.cpp

@@ -687,12 +687,12 @@ namespace QgsWfs
         QgsFeatureList featureList;
         try
         {
-          featureList = featuresFromGML( action.featureNodeList, provider );
+          featureList = featuresFromGML( action.featureNodeList, vlayer );
         }
         catch ( QgsOgcServiceException &ex )
         {
           action.error = true;
-          action.errorMsg = QStringLiteral( "%1 '%2'" ).arg( ex.message() ).arg( typeName );
+          action.errorMsg = QStringLiteral( "%1 '%2'" ).arg( ex.message(), typeName );
           continue;
         }
 
@@ -762,11 +762,14 @@ namespace QgsWfs
       filterRestorer.reset();
     }
 
-    QgsFeatureList featuresFromGML( QDomNodeList featureNodeList, QgsVectorDataProvider *provider )
+    QgsFeatureList featuresFromGML( QDomNodeList featureNodeList, QgsVectorLayer *layer )
     {
       // Store the inserted features
       QgsFeatureList featList;
 
+      const auto provider { layer->dataProvider() };
+      Q_ASSERT( provider );
+
       // Get Layer Field Information
       QgsFields fields = provider->fields();
       const QMap<QString, int> fieldMap = provider->fieldNameMap();
@@ -815,7 +818,8 @@ namespace QgsWfs
             }
             else //a geometry attribute
             {
-              QgsGeometry g = QgsOgcUtils::geometryFromGML( currentAttributeElement );
+              const QgsOgcUtils::Context context { layer, provider->transformContext() };
+              QgsGeometry g = QgsOgcUtils::geometryFromGML( currentAttributeElement, context );
               if ( g.isNull() )
               {
                 throw QgsRequestNotWellFormedException( QStringLiteral( "Geometry from GML error on layer insert" ) );

src/server/services/wfs/qgswfstransaction_1_0_0.h

@@ -110,7 +110,7 @@ namespace QgsWfs
     /**
      * Transform GML feature nodes to features
      */
-    QgsFeatureList featuresFromGML( QDomNodeList featureNodeList, QgsVectorDataProvider *provider );
+    QgsFeatureList featuresFromGML( QDomNodeList featureNodeList, QgsVectorLayer *layer );
 
     /**
      * Perform the transaction

tests/src/python/test_qgsserver_wfs.py

@@ -724,7 +724,7 @@ def _test(version, srsName, lat_lon=False):
                 query_string, requestMethod=QgsServerRequest.PostMethod, data=request.encode('utf-8'))
             feature = next(vl.getFeatures(QgsFeatureRequest(QgsExpression('"name" = \'%s\'' % name))))
             geom = feature.geometry()
-            self.assertEqual(geom.asWkt(0), geom_4326.asWkt(0), "Transaction Failed: %s , %s, lat_lon=%s" % (version, srsName, lat_lon))
+            self.assertEqual(geom.asWkt(0), geom_4326.asWkt(0), "Failed: %s , %s, lat_lon=%s" % (version, srsName, lat_lon))
 
         _test('1.1.0', 'urn:ogc:def:crs:EPSG::4326', lat_lon=True)
         _test('1.1.0', 'http://www.opengis.net/def/crs/EPSG/0/4326', lat_lon=True)