CityDoctorParent/CityDoctorCheckResult/pom.xml

 <?xml version="1.0" encoding="utf-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0">
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 	<parent>
 		<groupId>de.hft.stuttgart</groupId>

CityDoctorParent/CityDoctorEdge/pom.xml

 <?xml version="1.0" encoding="utf-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0">
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 	<parent>
 		<groupId>de.hft.stuttgart</groupId>

CityDoctorParent/CityDoctorEdge/src/main/java/de/hft/stuttgart/citydoctor2/edge/Vector2d.java

@@ -29,7 +29,6 @@ public class Vector2d {
 		this.y = y;
 	}
 
-	@SuppressWarnings("SuspiciousNameCombination")
     public Vector2d getPerpendicularVector() {
 		return new Vector2d(y, -x);
 	}

CityDoctorParent/CityDoctorModel/pom.xml

 <?xml version="1.0" encoding="utf-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0">
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 	<parent>
 		<groupId>de.hft.stuttgart</groupId>
@@ -92,7 +94,8 @@
 					<prefix>git</prefix>
 					<verbose>false</verbose>
 					<generateGitPropertiesFile>true</generateGitPropertiesFile>
-					<generateGitPropertiesFilename>${project.build.outputDirectory}/git.properties</generateGitPropertiesFilename>
+					<generateGitPropertiesFilename>
+						${project.build.outputDirectory}/git.properties</generateGitPropertiesFilename>
 					<gitDescribe>
 						<skip>false</skip>
 						<always>false</always>

CityDoctorParent/CityDoctorModel/src/main/java/de/hft/stuttgart/citydoctor2/check/HealingMethod.java

@@ -60,10 +60,8 @@ import de.hft.stuttgart.citydoctor2.check.error.UnknownCheckError;
  * @author Matthias Betz
  *
  */
-@SuppressWarnings("unused")
 public interface HealingMethod {
 	
-	
 	public HealingID getID();
 
 	default boolean visit(CheckError e, ModificationListener l) {

CityDoctorParent/CityDoctorModel/src/main/java/de/hft/stuttgart/citydoctor2/datastructure/AbstractFurniture.java

@@ -125,6 +125,9 @@ public abstract class AbstractFurniture extends CityObject {
         parent = co;
     }
     
+    public CityObject getParent() {
+		return parent;
+	}
 
     @Override
     public void unsetGmlGeometries() {

CityDoctorParent/CityDoctorModel/src/main/java/de/hft/stuttgart/citydoctor2/datastructure/ImplicitGeometryHolder.java

 package de.hft.stuttgart.citydoctor2.datastructure;
 
+import java.io.Serial;
+import java.util.List;
+
+import org.citygml4j.core.model.core.ImplicitGeometry;
+
 import de.hft.stuttgart.citydoctor2.check.Check;
 import de.hft.stuttgart.citydoctor2.check.CheckError;
 import de.hft.stuttgart.citydoctor2.check.CheckId;
 import de.hft.stuttgart.citydoctor2.math.TransformationMatrix;
-import org.apache.logging.log4j.LogManager;
-import org.apache.logging.log4j.Logger;
-import org.citygml4j.core.model.core.ImplicitGeometry;
-
-import java.io.Serial;
-import java.util.List;
 
 /**
  * Datastructure for representation and resolving of implicit geometries
@@ -18,7 +17,6 @@ import java.util.List;
  */
 public class ImplicitGeometryHolder extends Geometry {
 
-    private static final Logger logger = LogManager.getLogger(ImplicitGeometryHolder.class);
     @Serial
     private static final long serialVersionUID = -8938931081577196349L;
 

CityDoctorParent/CityDoctorModel/src/main/java/de/hft/stuttgart/citydoctor2/datastructure/LibraryObject.java

@@ -14,7 +14,8 @@ import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 
 /**
- * Reference object for handling of implicit geometries with a library object contained in an external file
+ * Reference object for handling of implicit geometries with a library object
+ * contained in an external file
  *
  * @author Riegel
  */
@@ -23,8 +24,7 @@ public class LibraryObject extends Geometry {
 	private static final Logger logger = LogManager.getLogger(LibraryObject.class);
 	@Serial
 	private static final long serialVersionUID = -50293435187454911L;
-    private final String filepath;
-    private final ParserConfiguration config;
+
 	private static Map<String, LibraryObject> libraryObjects = new ConcurrentHashMap<>();
 
 	public static LibraryObject of(Path path, ParserConfiguration config) {
@@ -35,20 +35,17 @@ public class LibraryObject extends Geometry {
 		if (protoGeom == null) {
 			return null;
 		}
-        LibraryObject libOb = new LibraryObject(protoGeom.getType(), protoGeom.getLod(), path, config);
+		LibraryObject libOb = new LibraryObject(protoGeom.getType(), protoGeom.getLod());
 		protoGeom.getPolygons().forEach(libOb::addPolygon);
 		libOb.updateEdgesAndVertices();
 		libraryObjects.put(path.toString(), libOb);
 		return libOb;
 	}
 
-    private LibraryObject(GeometryType type, Lod lod, Path path, ParserConfiguration config) {
+	private LibraryObject(GeometryType type, Lod lod) {
 		super(type, lod);
-        this.filepath = path.toString();
-        this.config = config;
 	}
 
-
 	private static Geometry parseFile(Path path, ParserConfiguration config) {
 		Geometry geo = null;
 		if (path.toFile().exists()) {
@@ -57,14 +54,15 @@ public class LibraryObject extends Geometry {
 				CityDoctorModel model = CityGmlParser.parseCityGmlFile(path.toString(), config);
 				List<CityObject> objects = model.createFeatureStream().toList();
 				if (objects.isEmpty()) {
-                    throw new InvalidGmlFileException("Referenced library-object's gml file does not contain a CityGML object!");
+					throw new InvalidGmlFileException(
+							"Referenced library-object's gml file does not contain a CityGML object!");
 				} else if (objects.size() > 1) {
-                    throw new InvalidGmlFileException("Referenced library-object's gml file contains more than one CityGML object!");
+					throw new InvalidGmlFileException(
+							"Referenced library-object's gml file contains more than one CityGML object!");
 				}
 				geo = objects.get(0).getHighestLodGeometry();
 			} catch (CityGmlParseException e) {
-                logger.error(String.format(
-                        "Encountered an error while parsing library object %s", path));
+				logger.error("Encountered an error while parsing library object {}", path);
 				logger.error(e.getStackTrace());
 			} catch (InvalidGmlFileException e) {
 				logger.error(e.getStackTrace());
@@ -73,7 +71,7 @@ public class LibraryObject extends Geometry {
 				CityGmlParser.gagLogger(false);
 			}
 		} else {
-            logger.error(String.format("Implicit geometry references non-existing library object file %s.", path));
+			logger.error("Implicit geometry references non-existing library object file {}.", path);
 		}
 		return geo;
 	}

CityDoctorParent/CityDoctorModel/src/main/java/de/hft/stuttgart/citydoctor2/datastructure/RelativeGeometry.java

 package de.hft.stuttgart.citydoctor2.datastructure;
 
-
-import org.apache.logging.log4j.LogManager;
-import org.apache.logging.log4j.Logger;
-
 import java.io.Serial;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
@@ -15,7 +11,6 @@ import java.util.concurrent.ConcurrentHashMap;
  */
 public class RelativeGeometry extends Geometry {
 
-    private static final Logger logger = LogManager.getLogger(RelativeGeometry.class);
 	@Serial
 	private static final long serialVersionUID = -686112245455298977L;
 
@@ -32,10 +27,7 @@ public class RelativeGeometry extends Geometry {
 		return relGeo;
 	}
 
-
 	private RelativeGeometry(GeometryType type, Lod lod) {
 		super(type, lod);
 	}
 }
-
-

CityDoctorParent/CityDoctorModel/src/main/java/de/hft/stuttgart/citydoctor2/datastructure/TunnelConstructiveElement.java

@@ -60,6 +60,8 @@ public class TunnelConstructiveElement extends CityObject {
                     MultiSurface ms = CityGmlUtils.createMultiSurface(geom, factory, config);
                     setMultiSurfaceAccordingToLod(geom, ms);
                     break;
+                case COMPOSITE_SURFACE:
+                	throw new IllegalStateException("Tunnel constructive element cannot have a composite surface geometry");
             }
         }
         for (BoundarySurface bs : boundarySurfaceList) {

CityDoctorParent/CityDoctorModel/src/main/java/de/hft/stuttgart/citydoctor2/mapper/citygml3/Citygml3FeatureMapper.java

@@ -121,8 +121,7 @@ public class Citygml3FeatureMapper extends ObjectWalker {
 		gco.setGmlObject(gos);
 		GeometryProperty<?> agLod1 = gos.getDeprecatedProperties().getLod1Geometry();
 		GeometryProperty<?> agLod4 = gos.getDeprecatedProperties().getLod4Geometry();
-        if (agLod1 != null && agLod1.getObject() != null &&
-                agLod1.getObject() instanceof MultiSurface ms) {
+		if (agLod1 != null && agLod1.getObject() != null && agLod1.getObject() instanceof MultiSurface ms) {
 			gco.addGeometry(parseMultiSurface(ms, Lod.LOD1));
 		}
 		if (agLod4 != null && agLod4.getObject() != null) {
@@ -211,10 +210,14 @@ public class Citygml3FeatureMapper extends ObjectWalker {
 		veg.setGmlObject(solitaryVegetationObject);
 		mapAbstractVegetationObject(solitaryVegetationObject, veg);
 
-        parseAndAddAbstractGeometry(solitaryVegetationObject.getDeprecatedProperties().getLod1Geometry(), Lod.LOD1, veg);
-        parseAndAddAbstractGeometry(solitaryVegetationObject.getDeprecatedProperties().getLod2Geometry(), Lod.LOD2, veg);
-        parseAndAddAbstractGeometry(solitaryVegetationObject.getDeprecatedProperties().getLod3Geometry(), Lod.LOD3, veg);
-        parseAndAddAbstractGeometry(solitaryVegetationObject.getDeprecatedProperties().getLod4Geometry(), Lod.LOD4, veg);
+		parseAndAddAbstractGeometry(solitaryVegetationObject.getDeprecatedProperties().getLod1Geometry(), Lod.LOD1,
+				veg);
+		parseAndAddAbstractGeometry(solitaryVegetationObject.getDeprecatedProperties().getLod2Geometry(), Lod.LOD2,
+				veg);
+		parseAndAddAbstractGeometry(solitaryVegetationObject.getDeprecatedProperties().getLod3Geometry(), Lod.LOD3,
+				veg);
+		parseAndAddAbstractGeometry(solitaryVegetationObject.getDeprecatedProperties().getLod4Geometry(), Lod.LOD4,
+				veg);
 
 		finishCityObjectConstruction(veg);
 		model.addVegetation(veg);
@@ -254,7 +257,6 @@ public class Citygml3FeatureMapper extends ObjectWalker {
 	public void visit(Bridge bridge) {
 		BridgeObject bo = new BridgeObject(BridgeType.BRIDGE, bridge);
 
-
 		// parse deprecated geometries
 		parseAndAddMultiSurface(bridge.getDeprecatedProperties().getLod1MultiSurface(), Lod.LOD1, bo);
 		parseAndAddMultiSurface(bridge.getDeprecatedProperties().getLod4MultiSurface(), Lod.LOD4, bo);
@@ -399,24 +401,11 @@ public class Citygml3FeatureMapper extends ObjectWalker {
 		parseAndAddMultiSurface(gmlTunnel.getDeprecatedProperties().getLod4MultiSurface(), Lod.LOD4, cdTunnel);
 		parseAndAddSolid(gmlTunnel.getDeprecatedProperties().getLod4Solid(), Lod.LOD4, cdTunnel);
 
-        for (TunnelInstallationProperty tiProp : gmlTunnel.getTunnelInstallations()) {
-            var gmlTi = tiProp.getObject();
-            if (gmlTi == null) {
-                // ignore empty properties
-                continue;
-            }
-            Installation ti = mapTunnelInstallation(gmlTi);
-            cdTunnel.addTunnelInstallation(ti);
-        }
-
-        for (HollowSpaceProperty thProp : gmlTunnel.getHollowSpaces()) {
-            var gmlTh = thProp.getObject();
-            if (gmlTh == null) {
-                continue;
-            }
-            TunnelHollow br = mapTunnelHollow(gmlTh);
-            cdTunnel.addTunnelHollow(br);
-        }
+		parseTunnelInstallations(gmlTunnel, cdTunnel);
+		parseHollowSpaces(gmlTunnel, cdTunnel);
+		parseTunnelFurniture(gmlTunnel, cdTunnel);
+		parseTunnelConstructiveElements(gmlTunnel, cdTunnel);
+		parseTunnelBoundarySurfaces(gmlTunnel);
 		for (Installation ti : cdTunnel.getTunnelInstallations()) {
 			updateEdgesAndVertices(ti);
 			for (BoundarySurface bs : ti.getBoundarySurfaces()) {
@@ -426,24 +415,14 @@ public class Citygml3FeatureMapper extends ObjectWalker {
 				}
 			}
 		}
-        for (TunnelFurnitureProperty tfProp : gmlTunnel.getTunnelFurniture()) {
-            var gmlTf = tfProp.getObject();
-            if (gmlTf == null) {
-                continue;
-            }
-            TunnelFurniture tf = mapTunnelFurniture(gmlTf);
-            cdTunnel.addTunnelFurniture(tf);
-        }
 		
-        for (TunnelConstructiveElementProperty teProp : gmlTunnel.getTunnelConstructiveElements()) {
-            var gmlTc = teProp.getObject();
-            if (gmlTc == null) {
-                continue;
-            }
-            TunnelConstructiveElement tc = mapTunnelConstructiveElement(gmlTc);
-            cdTunnel.addTunnelConstructiveElement(tc);
+		
+		cdTunnel.unsetGmlGeometries();
+		resolveAndClearReferences();
+		updateEdgesAndVertices(cdTunnel);
 	}
 
+	private void parseTunnelBoundarySurfaces(org.citygml4j.core.model.tunnel.AbstractTunnel gmlTunnel) {
 		SurfaceMapper surfaceMapper = new SurfaceMapper(polygonMap, references, compositeMap, vertexMap, config);
 		for (AbstractSpaceBoundaryProperty surfaceProp : gmlTunnel.getBoundaries()) {
 			if (!surfaceProp.isSetObject()) {
@@ -458,11 +437,51 @@ public class Citygml3FeatureMapper extends ObjectWalker {
 				updateEdgesAndVertices(o);
 			}
 		}
+	}
+
+	private void parseTunnelConstructiveElements(org.citygml4j.core.model.tunnel.AbstractTunnel gmlTunnel, AbstractTunnel cdTunnel) {
+		for (TunnelConstructiveElementProperty teProp : gmlTunnel.getTunnelConstructiveElements()) {
+			var gmlTc = teProp.getObject();
+			if (gmlTc == null) {
+				continue;
+			}
+			TunnelConstructiveElement tc = mapTunnelConstructiveElement(gmlTc);
+			cdTunnel.addTunnelConstructiveElement(tc);
+		}
+	}
 
+	private void parseTunnelFurniture(org.citygml4j.core.model.tunnel.AbstractTunnel gmlTunnel, AbstractTunnel cdTunnel) {
+		for (TunnelFurnitureProperty tfProp : gmlTunnel.getTunnelFurniture()) {
+			var gmlTf = tfProp.getObject();
+			if (gmlTf == null) {
+				continue;
+			}
+			TunnelFurniture tf = mapTunnelFurniture(gmlTf);
+			cdTunnel.addTunnelFurniture(tf);
+		}
+	}
 
-        cdTunnel.unsetGmlGeometries();
-        resolveAndClearReferences();
-        updateEdgesAndVertices(cdTunnel);
+	private void parseHollowSpaces(org.citygml4j.core.model.tunnel.AbstractTunnel gmlTunnel, AbstractTunnel cdTunnel) {
+		for (HollowSpaceProperty thProp : gmlTunnel.getHollowSpaces()) {
+			var gmlTh = thProp.getObject();
+			if (gmlTh == null) {
+				continue;
+			}
+			TunnelHollow br = mapTunnelHollow(gmlTh);
+			cdTunnel.addTunnelHollow(br);
+		}
+	}
+
+	private void parseTunnelInstallations(org.citygml4j.core.model.tunnel.AbstractTunnel gmlTunnel, AbstractTunnel cdTunnel) {
+		for (TunnelInstallationProperty tiProp : gmlTunnel.getTunnelInstallations()) {
+			var gmlTi = tiProp.getObject();
+			if (gmlTi == null) {
+				// ignore empty properties
+				continue;
+			}
+			Installation ti = mapTunnelInstallation(gmlTi);
+			cdTunnel.addTunnelInstallation(ti);
+		}
 	}
 
 	private Installation mapTunnelInstallation(TunnelInstallation gmlTi) {
@@ -567,7 +586,8 @@ public class Citygml3FeatureMapper extends ObjectWalker {
 		return tf;
 	}
 
-    private TunnelConstructiveElement mapTunnelConstructiveElement(org.citygml4j.core.model.tunnel.TunnelConstructiveElement gmlTe) {
+	private TunnelConstructiveElement mapTunnelConstructiveElement(
+			org.citygml4j.core.model.tunnel.TunnelConstructiveElement gmlTe) {
 		TunnelConstructiveElement te = new TunnelConstructiveElement(gmlTe);
 		mapAbstractOccupiedSpace(gmlTe, te);
 		te.unsetGmlGeometries();
@@ -601,7 +621,8 @@ public class Citygml3FeatureMapper extends ObjectWalker {
 		}
 	}
 
-    private void mapConstructiveElement(org.citygml4j.core.model.bridge.BridgeConstructiveElement ele, BridgeConstructiveElement bce) {
+	private void mapConstructiveElement(org.citygml4j.core.model.bridge.BridgeConstructiveElement ele,
+			BridgeConstructiveElement bce) {
 		mapAbstractConstructiveElement(ele, bce);
 
 		SurfaceMapper surfaceMapper = new SurfaceMapper(polygonMap, references, compositeMap, vertexMap, config);
@@ -617,7 +638,8 @@ public class Citygml3FeatureMapper extends ObjectWalker {
 		}
 	}
 
-    private void mapAbstractConstructiveElement(org.citygml4j.core.model.bridge.BridgeConstructiveElement ele, BridgeConstructiveElement bce) {
+	private void mapAbstractConstructiveElement(org.citygml4j.core.model.bridge.BridgeConstructiveElement ele,
+			BridgeConstructiveElement bce) {
 		mapAbstractOccupiedSpace(ele, bce);
 	}
 
@@ -782,22 +804,6 @@ public class Citygml3FeatureMapper extends ObjectWalker {
 		}
 	}
 
-    private void parseAndAddCompositeSurface(MultiSurfaceProperty ms, Lod lod, CityObject co) {
-        if (ms == null || ms.getObject() == null) {
-            return;
-        }
-        List<SurfaceProperty> surfaces = ms.getObject().getSurfaceMember();
-        for (SurfaceProperty surface : surfaces) {
-            if (surface.getObject() instanceof CompositeSurface cs) {
-                Geometry geom = parseCompositeSurface(cs, lod);
-                if (geom != null) {
-                    co.addGeometry(geom);
-                }
-            }
-        }
-
-    }
-
 	private void parseImplicitGeometry(AbstractOccupiedSpace aos, CityObject co) {
 		for (int i = 1; i <= 3; i++) {
 			if (aos.getImplicitRepresentation(i) == null) {
@@ -811,10 +817,10 @@ public class Citygml3FeatureMapper extends ObjectWalker {
 				}
 			} else if (aos.getImplicitRepresentation(i).getHref() != null) {
 				// Hrefs of ImplicitGeometries point to its RelativeGeometry.
-                // Can be ignored for CD since the Href is only used for repeating the RelativeGeometry at different LODs
+				// Can be ignored for CD since the Href is only used for repeating the
+				// RelativeGeometry at different LODs
 			}
 
-
 		}
 
 	}
@@ -845,7 +851,7 @@ public class Citygml3FeatureMapper extends ObjectWalker {
 			}
 
 		} else {
-            logger.error(String.format("Implicit geometry of GML-ID %s has no referenced geometry.", ig.getId()));
+			logger.error("Implicit geometry of GML-ID {} has no referenced geometry.", ig.getId());
 		}
 		return igh;
 	}
@@ -859,8 +865,20 @@ public class Citygml3FeatureMapper extends ObjectWalker {
 			Geometry geom = ref.geometry();
 			CompositeCollection comp = compositeMap.get(href);
 			if (comp != null) {
+				// composite collection, add each containing polygon to the geometry
 				comp.getCompositeMembers().forEach(geom::addPolygon);
 			} else {
+				handlePolygonReference(href, geom);
+			}
+		}
+
+		// clear storage for polygons and vertices
+		references = new ArrayList<>();
+		vertexMap = new HashMap<>();
+		polygonMap = new HashMap<>();
+	}
+
+	private void handlePolygonReference(String href, Geometry geom) {
 		ConcretePolygon concPoly = polygonMap.get(href);
 		if (concPoly == null) {
 			if (logger.isWarnEnabled()) {
@@ -877,14 +895,6 @@ public class Citygml3FeatureMapper extends ObjectWalker {
 			geom.addPolygon(lPoly);
 		}
 	}
-        }
-
-        // clear storage for polygons and vertices
-        // probably faster than .clear() ?
-        references = new ArrayList<>();
-        vertexMap = new HashMap<>();
-        polygonMap = new HashMap<>();
-    }
 
 	private void readAbstractBuilding(org.citygml4j.core.model.building.AbstractBuilding gmlAb,
 			AbstractBuilding cdBuilding) {
@@ -896,25 +906,47 @@ public class Citygml3FeatureMapper extends ObjectWalker {
 		parseAndAddMultiSurface(gmlAb.getDeprecatedProperties().getLod4MultiSurface(), Lod.LOD4, cdBuilding);
 		parseAndAddSolid(gmlAb.getDeprecatedProperties().getLod4Solid(), Lod.LOD4, cdBuilding);
 
-        for (BuildingInstallationProperty biProp : gmlAb.getBuildingInstallations()) {
-            var gmlBi = biProp.getObject();
-            if (gmlBi == null) {
-                // ignore empty properties
+		parseBuildingInstallations(gmlAb, cdBuilding);
+		parseBuildingRooms(gmlAb, cdBuilding);
+		parseBuildingSubdivisions(gmlAb, cdBuilding);
+		parseBoundarySurfaces(gmlAb, cdBuilding);
+		parseBuildingFurniture(gmlAb, cdBuilding);
+	}
+
+	private void parseBuildingFurniture(org.citygml4j.core.model.building.AbstractBuilding gmlAb, AbstractBuilding cdBuilding) {
+		for (BuildingFurnitureProperty bfProp : gmlAb.getBuildingFurniture()) {
+			var gmlBf = bfProp.getObject();
+			if (gmlBf == null) {
 				continue;
 			}
-            Installation bi = mapBuildingInstallation(gmlBi);
-            cdBuilding.addBuildingInstallation(bi);
+			BuildingRoomFurniture bf = mapBuildingFurniture(gmlBf);
+			cdBuilding.addBuildingRoomFurniture(bf);
+		}
 	}
 
-        for (BuildingRoomProperty brProp : gmlAb.getBuildingRooms()) {
-            var gmlBr = brProp.getObject();
-            if (gmlBr == null) {
+	private void parseBoundarySurfaces(org.citygml4j.core.model.building.AbstractBuilding gmlAb, AbstractBuilding cdBuilding) {
+		SurfaceMapper surfaceMapper = new SurfaceMapper(polygonMap, references, compositeMap, vertexMap, config);
+		for (AbstractSpaceBoundaryProperty surfaceProp : gmlAb.getBoundaries()) {
+			if (!surfaceProp.isSetObject()) {
 				continue;
 			}
-            BuildingRoom br = mapBuildingRoom(gmlBr);
-            cdBuilding.addBuildingRoom(br);
+			AbstractSpaceBoundary surface = surfaceProp.getObject();
+			surface.accept(surfaceMapper);
 		}
+		updatePartOfSurface(cdBuilding, surfaceMapper);
 
+		cdBuilding.unsetGmlGeometries();
+		resolveAndClearReferences();
+		updateEdgesAndVertices(cdBuilding);
+		for (BoundarySurface bs : surfaceMapper.getSurfaces()) {
+			updateEdgesAndVertices(bs);
+			for (Opening o : bs.getOpenings()) {
+				updateEdgesAndVertices(o);
+			}
+		}
+	}
+
+	private void parseBuildingSubdivisions(org.citygml4j.core.model.building.AbstractBuilding gmlAb, AbstractBuilding cdBuilding) {
 		for (AbstractBuildingSubdivisionProperty abs : gmlAb.getBuildingSubdivisions()) {
 			var gmlABS = abs.getObject();
 			if (gmlABS == null) {
@@ -928,25 +960,28 @@ public class Citygml3FeatureMapper extends ObjectWalker {
 				cdBuilding.addBuildingUnit(bu);
 			}
 		}
+	}
 
-        SurfaceMapper surfaceMapper = new SurfaceMapper(polygonMap, references, compositeMap, vertexMap, config);
-        for (AbstractSpaceBoundaryProperty surfaceProp : gmlAb.getBoundaries()) {
-            if (!surfaceProp.isSetObject()) {
+	private void parseBuildingRooms(org.citygml4j.core.model.building.AbstractBuilding gmlAb, AbstractBuilding cdBuilding) {
+		for (BuildingRoomProperty brProp : gmlAb.getBuildingRooms()) {
+			var gmlBr = brProp.getObject();
+			if (gmlBr == null) {
 				continue;
 			}
-            AbstractSpaceBoundary surface = surfaceProp.getObject();
-            surface.accept(surfaceMapper);
+			BuildingRoom br = mapBuildingRoom(gmlBr);
+			cdBuilding.addBuildingRoom(br);
+		}
 	}
-        updatePartOfSurface(cdBuilding, surfaceMapper);
 
-        cdBuilding.unsetGmlGeometries();
-        resolveAndClearReferences();
-        updateEdgesAndVertices(cdBuilding);
-        for (BoundarySurface bs : surfaceMapper.getSurfaces()) {
-            updateEdgesAndVertices(bs);
-            for (Opening o : bs.getOpenings()) {
-                updateEdgesAndVertices(o);
+	private void parseBuildingInstallations(org.citygml4j.core.model.building.AbstractBuilding gmlAb, AbstractBuilding cdBuilding) {
+		for (BuildingInstallationProperty biProp : gmlAb.getBuildingInstallations()) {
+			var gmlBi = biProp.getObject();
+			if (gmlBi == null) {
+				// ignore empty properties
+				continue;
 			}
+			Installation bi = mapBuildingInstallation(gmlBi);
+			cdBuilding.addBuildingInstallation(bi);
 		}
 		for (Installation bi : cdBuilding.getBuildingInstallations()) {
 			updateEdgesAndVertices(bi);
@@ -957,14 +992,6 @@ public class Citygml3FeatureMapper extends ObjectWalker {
 				}
 			}
 		}
-        for (BuildingFurnitureProperty bfProp : gmlAb.getBuildingFurniture()) {
-            var gmlBf = bfProp.getObject();
-            if (gmlBf == null) {
-                continue;
-            }
-            BuildingRoomFurniture bf = mapBuildingFurniture(gmlBf);
-            cdBuilding.addBuildingRoomFurniture(bf);
-        }
 	}
 
 	private BuildingRoom mapBuildingRoom(org.citygml4j.core.model.building.BuildingRoom gmlBr) {
@@ -1006,7 +1033,6 @@ public class Citygml3FeatureMapper extends ObjectWalker {
 			br.addFurnitureRef(bfProp);
 		}
 
-
 		return br;
 	}
 

CityDoctorParent/CityDoctorModel/src/main/java/de/hft/stuttgart/citydoctor2/mapper/citygml3/Citygml3GeometryMapper.java

@@ -59,7 +59,7 @@ public class Citygml3GeometryMapper extends GeometryWalker {
     public void visit(Polygon polygon) {
         parsePolygon(polygon.getId(), polygon.getExterior(), polygon.getInterior());
         if (polygon.getExterior() == null) {
-            logger.warn(String.format("No exterior: %s", polygon.getId()));
+            logger.warn("No exterior: {}", polygon.getId());
         }
     }
 

CityDoctorParent/CityDoctorModel/src/main/java/de/hft/stuttgart/citydoctor2/math/ProjectionAxis.java

@@ -87,12 +87,27 @@ public class ProjectionAxis {
 		this.axis = axis;
 	}
 
+	/**
+	 * This will write the two coordinates determined in this projection axis into a
+	 * given array at the startIndex location. The array has to have at least a
+	 * length of startIndex + 1.
+	 * 
+	 * @param v          the vector from which the coordinates are taken.
+	 * @param array      the array that is written to.
+	 * @param startIndex the start location in the array.
+	 */
+	public void writeCoordinatesOfVectorInArray(Vector3d v, double[] array, int startIndex) {
+		array[startIndex] = v.getCoordinate(axis[0]);
+		array[startIndex + 1] = v.getCoordinate(axis[1]);
+	}
+
 	public Vector2d project(Vector3d v) {
 		return new Vector2d(v.getCoordinate(axis[0]), v.getCoordinate(axis[1]));
 	}
 
 	/**
 	 * calculates the missing coordinate for 3d vector from the plane and this axis.
+	 * 
 	 * @return the projected 3d point.
 	 */
 	public Vector3d projectToPlane(Plane plane, Vector2d v) {
@@ -101,6 +116,7 @@ public class ProjectionAxis {
 
 	/**
 	 * calculates the missing coordinate for 3d vector from the plane and this axis.
+	 * 
 	 * @return the projected 3d point.
 	 */
 	public Vector3d projectToPlane(Plane plane, double vectorX, double vectorY) {

CityDoctorParent/CityDoctorModel/src/main/java/de/hft/stuttgart/citydoctor2/tesselation/EarcutTesselator.java

@@ -6,10 +6,8 @@ import java.util.List;
 import de.hft.stuttgart.citydoctor2.datastructure.LinearRing;
 import de.hft.stuttgart.citydoctor2.datastructure.Polygon;
 import de.hft.stuttgart.citydoctor2.datastructure.Vertex;
-import de.hft.stuttgart.citydoctor2.math.Polygon2d;
-import de.hft.stuttgart.citydoctor2.math.Ring2d;
+import de.hft.stuttgart.citydoctor2.math.ProjectionAxis;
 import de.hft.stuttgart.citydoctor2.math.Triangle3d;
-import de.hft.stuttgart.citydoctor2.math.Vector2d;
 import earcut4j.Earcut;
 
 /**
@@ -35,8 +33,8 @@ public class EarcutTesselator {
 			}
 		}
 		// collect vertices
-		// project polygon to 2D space as library is buggy for more than 2 dimensions
-		Polygon2d projectedPolygon = Polygon2d.withProjection(p);
+		// find most dominant projection axis for 2d projection
+		ProjectionAxis axis = ProjectionAxis.of(p);
 		
 		double[] vertices = new double[nrOfVertices * 2];
 		List<Vertex> vertexObjects = new ArrayList<>();
@@ -45,9 +43,10 @@ public class EarcutTesselator {
 			addVerticesToList(innerRing, vertexObjects);
 		}
 		
-		int start = addRingToArray(projectedPolygon.getExterior(), vertices, 0);
-		for (Ring2d innerRing : projectedPolygon.getInteriorRings()) {
-			start = addRingToArray(innerRing, vertices, start);
+		// write the vector data according to the projection axis into the array
+		int start = addRingToArray(p.getExteriorRing(), vertices, 0, axis);
+		for (LinearRing innerRing : p.getInnerRings()) {
+			start = addRingToArray(innerRing, vertices, start, axis);
 		}
 		
 		// triangulation
@@ -73,12 +72,12 @@ public class EarcutTesselator {
 		}
 	}
 
-	private static int addRingToArray(Ring2d ring, double[] vertices, int start) {
-		List<Vector2d> ringVertices = ring.getVertices();
+	private static int addRingToArray(LinearRing ring, double[] vertices, int start, ProjectionAxis axis) {
+		List<Vertex> ringVertices = ring.getVertices();
 		for (int i = 0; i < ringVertices.size() - 1; i++) {
-			Vector2d v = ringVertices.get(i);
-			vertices[start++] = v.getX();
-			vertices[start++] = v.getY();
+			Vertex v = ringVertices.get(i);
+			axis.writeCoordinatesOfVectorInArray(v, vertices, start);
+			start = start + 2;
 		}
 		return start;
 	}

CityDoctorParent/CityDoctorModel/src/main/java/de/hft/stuttgart/citydoctor2/writer/CityGMLWriterUtils.java

@@ -31,7 +31,6 @@ import java.util.concurrent.atomic.AtomicInteger;
 
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
-import org.citygml4j.core.model.CityGMLVersion;
 import org.citygml4j.core.model.core.AbstractCityObjectProperty;
 import org.citygml4j.core.model.core.AbstractFeatureProperty;
 import org.citygml4j.core.model.core.CityModel;

CityDoctorParent/CityDoctorValidation/pom.xml

 <?xml version="1.0" encoding="utf-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0">
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0">
 	<modelVersion>4.0.0</modelVersion>
 	<parent>
 		<groupId>de.hft.stuttgart</groupId>

CityDoctorParent/CityDoctorValidation/src/main/java/de/hft/stuttgart/citydoctor2/check/Checker.java

@@ -423,6 +423,7 @@ public class Checker {
 		}
 	}
 
+	@SuppressWarnings("resource")
 	public static SvrlContentHandler executeSchematronValidationIfAvailable(ValidationConfiguration config,
 			InputStream in) {
 		if (config.getSchematronFilePath() != null && !config.getSchematronFilePath().isEmpty()) {

CityDoctorParent/CityDoctorValidation/src/main/java/de/hft/stuttgart/citydoctor2/checks/SvrlContentHandler.java

@@ -65,23 +65,19 @@ public class SvrlContentHandler implements ContentHandler {
 	public void setDocumentLocator(Locator locator) {
 		// not needed
 	}
-	@SuppressWarnings("RedundantThrows")
 	@Override
 	public void startDocument() throws SAXException {
 		// not needed
 	}
 
-	@SuppressWarnings("RedundantThrows")
     @Override
 	public void endDocument() throws SAXException {
 		// not needed
 	}
-	@SuppressWarnings("RedundantThrows")
 	@Override
 	public void startPrefixMapping(String prefix, String uri) throws SAXException {
 		// not needed
 	}
-	@SuppressWarnings("RedundantThrows")
 	@Override
 	public void endPrefixMapping(String prefix) throws SAXException {
 		// not needed
@@ -133,17 +129,14 @@ public class SvrlContentHandler implements ContentHandler {
 			buffer.append(ch, start, length);
 		}
 	}
-	@SuppressWarnings("RedundantThrows")
 	@Override
 	public void ignorableWhitespace(char[] ch, int start, int length) throws SAXException {
 		// not needed
 	}
-	@SuppressWarnings("RedundantThrows")
 	@Override
 	public void processingInstruction(String target, String data) throws SAXException {
 		// not needed
 	}
-	@SuppressWarnings("RedundantThrows")
 	@Override
 	public void skippedEntity(String name) throws SAXException {
 		// not needed

CityDoctorParent/CityDoctorValidation/src/main/java/de/hft/stuttgart/citydoctor2/checks/geometry/SolidSelfIntCheck.java

@@ -76,7 +76,6 @@ public class SolidSelfIntCheck extends Check {
 		}
 		CheckResult cr;
 		List<PolygonIntersection> intersections = SelfIntersectionUtil.calculateSolidSelfIntersection(g);
-//		List<PolygonIntersection> intersections = SelfIntersectionUtil.doesSolidSelfIntersect2(g);
 		if (intersections.isEmpty()) {
 			cr = new CheckResult(this, ResultStatus.OK, null);
 		} else {

CityDoctorParent/CityDoctorValidation/src/test/java/de/hft/stuttgart/citydoctor2/checks/geometry/SolidSelfIntCheckFalsePositiveBigMeshTest.java

@@ -36,7 +36,6 @@ public class SolidSelfIntCheckFalsePositiveBigMeshTest {
 		Checker c = new Checker(config, m);
 		c.runChecks();
 		Building building = m.getBuildings().get(0);
-		System.out.println(building.containsAnyError());
 		/*
 		 *  The examples have no actual self-intersections, but can contain other actual model defects.
 		 *  If an error is detected, it is thus required to check if the