Refactor: Add CheckError-collection visitor

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

@@ -25,6 +25,7 @@ import java.util.List;
 import java.util.Map;
 
 import de.hft.stuttgart.citydoctor2.utils.CheckErrorFound;
+import de.hft.stuttgart.citydoctor2.utils.visitors.CheckableErrorCollector;
 import de.hft.stuttgart.citydoctor2.utils.visitors.ContainsAnyErrorVisitor;
 import de.hft.stuttgart.citydoctor2.utils.visitors.ContainsErrorVisitor;
 import de.hft.stuttgart.citydoctor2.utils.visitors.PrepareForCheckingVisitor;
@@ -256,6 +257,16 @@ public abstract class Checkable implements Serializable {
 	 * @param errors the collection in which the errors are added.
 	 */
 	public void collectContainedErrors(List<CheckError> errors) {
+		this.accept(new CheckableErrorCollector(errors));
+	}
+
+	/**
+	 * Collects all errors from this checkable and adds
+	 * them to the given list. DEPENDENCY_NOT_MET errors are excluded from this.
+	 *
+	 * @param errors the collection in which the errors are added.
+	 */
+	public void collectErrors(List<CheckError> errors) {
 		for (CheckResult cr : checkResults.values()) {
 			if (cr.getResultStatus() == ResultStatus.ERROR) {
 				errors.add(cr.getError());

CityDoctorParent/CityDoctorModel/src/main/java/de/hft/stuttgart/citydoctor2/utils/visitors/CheckableErrorCollector.java

+package de.hft.stuttgart.citydoctor2.utils.visitors;
+
+import de.hft.stuttgart.citydoctor2.check.AbstractCheck;
+import de.hft.stuttgart.citydoctor2.check.CheckError;
+import de.hft.stuttgart.citydoctor2.check.Checkable;
+
+import java.util.List;
+
+public class CheckableErrorCollector extends AbstractCheck {
+
+    List<CheckError> errors;
+
+    public CheckableErrorCollector(List<CheckError> errors) {
+        this.errors = errors;
+    }
+
+    @Override
+    public void check(Checkable checkable) {
+        checkable.collectErrors(errors);
+    }
+}