Fix: Defer utility visitors to ConcretePolygon

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

@@ -19,8 +19,11 @@
 package de.hft.stuttgart.citydoctor2.datastructure;
 
 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.check.CheckResult;
+import de.hft.stuttgart.citydoctor2.check.Checkable;
+import de.hft.stuttgart.citydoctor2.check.CheckableUtilsVisitor;
 import de.hft.stuttgart.citydoctor2.check.CheckableVisitor;
 import de.hft.stuttgart.citydoctor2.math.Vector3d;
 import de.hft.stuttgart.citydoctor2.tesselation.TesselatedPolygon;
@@ -62,6 +65,52 @@ public class LinkedPolygon extends Polygon {
         }
     }
 
+    @Override
+    public boolean hasExistingGmlId() {
+        return poly.hasExistingGmlId();
+    }
+
+    @Override
+    public void setValidated(boolean validated) {
+        // Linked polys themselves are not checked
+    }
+
+    @Override
+    public boolean isValidated() {
+        return poly.isValidated();
+    }
+
+    //TODO: Think how to handle this, as it violates class contract if ignored
+    @Override
+    public void prepareForChecking() {
+        // Linked polys themselves are not checked
+    }
+
+    @Override
+    public void clearMetaInformation() {
+        // Linked polys themselves are not checked
+    }
+
+    @Override
+    public boolean hasError(CheckId checkIdentifier) {
+        return poly.hasError(checkIdentifier);
+    }
+
+    @Override
+    public boolean hasAnyError() {
+        return poly.hasAnyError();
+    }
+
+    @Override
+    public void collectContainedErrors(List<CheckError> errors) {
+        poly.collectContainedErrors(errors);
+    }
+
+    @Override
+    public void collectErrors(List<CheckError> errors) {
+        poly.collectErrors(errors);
+    }
+
     @Override
     public CheckResult getCheckResult(Check c) {
         return poly.getCheckResult(c);
@@ -104,8 +153,12 @@ public class LinkedPolygon extends Polygon {
 
     @Override
     public void accept(CheckableVisitor c) {
-        // linked polygons are not checked
-        setValidated(true);
+        // LinkedPolygon should ignore Checks, as their referenced ConcretePolygon must be within the same TopLevelFeature.
+        // Checks always start iterating from a TopLevelFeature and thus will visit the referenced ConcretePolygon.
+        if (!c.isValidator()){
+            // Utility Visitors get passed to the ConcretePolygon, as they can start iterating from a sub-CityObject.
+            poly.accept(c);
+        }
     }
 
     @Override