Fix NPE in getParentElement(...): Return null if input EObject is null;...

Fix NPE in getParentElement(...): Return null if input EObject is null; Otherwise NPE occurs if isReflexive == false.

org.fortiss.tooling.kernel/trunk/src/org/fortiss/tooling/kernel/utils/KernelModelElementUtils.java

@@ -40,7 +40,7 @@ import org.fortiss.tooling.kernel.service.IPersistencyService;
  * @author hoelzl
  * @author $Author$
  * @version $Rev$
- * @ConQAT.Rating GREEN Hash: 32720C522B09A28636B9A53913B5B753
+ * @ConQAT.Rating YELLOW Hash: 9163DE286C9C7E95192F7149338E95BE
  */
 public final class KernelModelElementUtils {
 
@@ -121,6 +121,9 @@ public final class KernelModelElementUtils {
 	@SuppressWarnings("unchecked")
 	public static <T extends EObject> T getParentElement(EObject element, Class<T> targetClass,
 			boolean isReflexive) {
+		if(element == null) {
+			return null;
+		}
 		EObject currentParent = isReflexive ? element : element.eContainer();
 		while(currentParent != null && !(targetClass.isAssignableFrom(currentParent.getClass()))) {
 			currentParent = currentParent.eContainer();