Fix: Handle cache passthrough within streamchecker

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

@@ -59,6 +59,7 @@ import javax.xml.transform.dom.DOMSource;
 import javax.xml.transform.sax.SAXResult;
 import javax.xml.transform.stream.StreamSource;
 
+import de.hft.stuttgart.citydoctor2.database.UnconnectedCache;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 
@@ -636,7 +637,10 @@ public class Checker {
         ArrayList<Check> checkList = new ArrayList<>();
         for (CheckId id : enabledCheck) {
             Check c = checkConfig.getCheckForId(id);
-            c.init(parameterMap, parserConfig, model.getCache());
+            //TODO: Change this to correct handling with streamchecker
+            CityObjectCache cache = model !=null ? model.getCache() : new UnconnectedCache();
+            //Temp ternary
+            c.init(parameterMap, parserConfig, cache);
             checkList.add(c);
         }
         return checkList;