Refactor: Remove abstract TopologyCheck superclass

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

@@ -59,7 +59,6 @@ import javax.xml.transform.dom.DOMSource;
 import javax.xml.transform.sax.SAXResult;
 import javax.xml.transform.stream.StreamSource;
 
-import de.hft.stuttgart.citydoctor2.checks.topology.TopologyCheck;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 
@@ -211,7 +210,6 @@ public class Checker {
             Future<SvrlContentHandler> handlerFuture =  executor.submit(schematronThread);
             executor.shutdown();
 
-            TopologyCheck.registerCache(model.getCache());
             checkCityModel(model, l);
             getSchematronResults(handlerFuture, l);
 

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

-package de.hft.stuttgart.citydoctor2.checks.topology;
-
-import de.hft.stuttgart.citydoctor2.check.Check;
-import de.hft.stuttgart.citydoctor2.check.RequirementType;
-import de.hft.stuttgart.citydoctor2.database.CityObjectCache;
-
-/** Topology checks are a specific subclass of checks which check conditions, constraints and requirements between
- * different Features within the same CityModel. As such they require access to multiple CityObjects to run, necessitating
- * access to the CityObject cache for efficient memory usage.
- * <p>
- * The following terms will be used in the documentation of topological checks:
- * <ul>
- *     <li>Subject: The Feature that is being checked
- *     <li>Candidate(s): Other Features that are being checked against the subject. Candidates are selected via spatial
- *     proximity, as Features that are too far away from the subject can't conflict topological requirements and can thus
- *     be safely skipped by the checks.
- * <ul/>
- *
- * <p/>
- */
-public abstract class TopologyCheck extends Check {
-
-    protected static CityObjectCache registeredCache;
-
-    public static void registerCache(CityObjectCache cache){
-        registeredCache = cache;
-    }
-
-
-    @Override
-    public RequirementType getType() {
-        return RequirementType.TOPOLOGY;
-    }
-
-}