Server WFS: handle axis order in BBOX

Follows GeoServer convention, fixes #36584

Cherry-picked from master e967fd9

src/server/services/wfs/qgswfsgetfeature.cpp

@@ -544,7 +544,7 @@ namespace QgsWfs
         }
 
         // each Feature requested by FEATUREID can have each own property list
-        QString key = QStringLiteral( "%1(%2)" ).arg( typeName ).arg( propertyName );
+        QString key = QStringLiteral( "%1(%2)" ).arg( typeName, propertyName );
         QStringList fids;
         if ( fidsMap.contains( key ) )
         {
@@ -734,12 +734,15 @@ namespace QgsWfs
       // get bbox extent
       QgsRectangle extent = mWfsParameters.bboxAsRectangle();
 
+      QString extentSrsName { mWfsParameters.srsName() };
+
       // handle WFS 1.1.0 optional CRS
       if ( mWfsParameters.bbox().split( ',' ).size() == 5 && ! mWfsParameters.srsName().isEmpty() )
       {
         QString crs( mWfsParameters.bbox().split( ',' )[4] );
         if ( crs != mWfsParameters.srsName() )
         {
+          extentSrsName = crs;
           QgsCoordinateReferenceSystem sourceCrs( crs );
           QgsCoordinateReferenceSystem destinationCrs( mWfsParameters.srsName() );
           if ( sourceCrs.isValid() && destinationCrs.isValid( ) )
@@ -763,6 +766,17 @@ namespace QgsWfs
         }
       }
 
+      // Follow GeoServer conventions and handle axis order
+      // See: https://docs.geoserver.org/latest/en/user/services/wfs/axis_order.html#wfs-basics-axis
+      QgsCoordinateReferenceSystem extentCrs;
+      extentCrs.createFromUserInput( extentSrsName );
+      if ( extentCrs.isValid() && extentCrs.hasAxisInverted() && ! extentSrsName.startsWith( QStringLiteral( "EPSG:" ) ) )
+      {
+        QgsGeometry geom { QgsGeometry::fromRect( extent ) };
+        geom.get()->swapXy();
+        extent = geom.boundingBox();
+      }
+
       // set feature request filter rectangle
       QList<getFeatureQuery>::iterator qIt = request.queries.begin();
       for ( ; qIt != request.queries.end(); ++qIt )

tests/src/python/test_qgsserver_wfs.py

@@ -702,6 +702,61 @@ def test_insert_srsName(self):
         geom = feature.geometry()
         self.assertEqual(geom.asWkt(0), geom_4326.asWkt(0))
 
+        # Tests for inverted axis issue GH #36584
+        # Cleanup
+        self.assertTrue(vl.startEditing())
+        vl.selectByExpression('"name" LIKE \'4326-test%\'')
+        vl.deleteSelectedFeatures()
+        self.assertTrue(vl.commitChanges())
+
+        self.i = 0
+
+        def _test(version, srsName, lat_lon=False):
+            self.i += 1
+            name = '4326-test_%s' % self.i
+            request = post_data.format(
+                name=name,
+                version=version,
+                srsName=srsName,
+                coordinates='52.48,10.67' if lat_lon else '10.67,52.48'
+            )
+            header, body = self._execute_request(
+                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))
+
+        _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)
+        _test('1.1.0', 'http://www.opengis.net/gml/srs/epsg.xml#4326', lat_lon=False)
+        _test('1.1.0', 'EPSG:4326', lat_lon=False)
+
+        _test('1.0.0', 'urn:ogc:def:crs:EPSG::4326', lat_lon=True)
+        _test('1.0.0', 'http://www.opengis.net/def/crs/EPSG/0/4326', lat_lon=True)
+        _test('1.0.0', 'http://www.opengis.net/gml/srs/epsg.xml#4326', lat_lon=False)
+        _test('1.0.0', 'EPSG:4326', lat_lon=False)
+
+        def _test_getFeature(version, srsName, lat_lon=False):
+            # Now get the feature through WFS using BBOX filter
+            bbox = QgsGeometry.fromWkt('point( 10.7006 52.4317)').boundingBox()
+            bbox.grow(0.0001)
+            bbox_text = "%s,%s,%s,%s" % ((bbox.yMinimum(), bbox.xMinimum(), bbox.yMaximum(), bbox.xMaximum()) if lat_lon else (bbox.xMinimum(), bbox.yMinimum(), bbox.xMaximum(), bbox.yMaximum()))
+            req = query_string + '&REQUEST=GetFeature&VERSION={version}&TYPENAME=as_symbols&SRSNAME={srsName}&BBOX={bbox},{srsName}'.format(version=version, srsName=srsName, bbox=bbox_text)
+            header, body = self._execute_request(req)
+            self.assertTrue(b'gid>7' in body, "GetFeature Failed: %s , %s, lat_lon=%s" % (version, srsName, lat_lon))
+
+        _test_getFeature('1.1.0', 'urn:ogc:def:crs:EPSG::4326', lat_lon=True)
+        _test_getFeature('1.1.0', 'EPSG:4326', lat_lon=False)
+
+        _test_getFeature('1.0.0', 'urn:ogc:def:crs:EPSG::4326', lat_lon=True)
+        _test_getFeature('1.0.0', 'EPSG:4326', lat_lon=False)
+
+        # Cleanup
+        self.assertTrue(vl.startEditing())
+        vl.selectByExpression('"name" LIKE \'4326-test%\'')
+        vl.deleteSelectedFeatures()
+        self.assertTrue(vl.commitChanges())
+
 
 if __name__ == '__main__':
     unittest.main()