diff --git a/src/main/java/li/strolch/persistence/xml/AbstractDao.java b/src/main/java/li/strolch/persistence/xml/AbstractDao.java
index f9a5ff32d..932fa2e1a 100644
--- a/src/main/java/li/strolch/persistence/xml/AbstractDao.java
+++ b/src/main/java/li/strolch/persistence/xml/AbstractDao.java
@@ -49,6 +49,12 @@ public abstract class AbstractDao<T extends StrolchElement> implements StrolchDa
 		return typeRef;
 	}
 
+	@Override
+	public boolean hasElement(String type, String id) {
+		IdOfSubTypeRef ref = getIdRef(type, id);
+		return this.tx.getObjectDao().hasElement(ref);
+	}
+
 	@Override
 	public long querySize() {
 		long size = 0;
@@ -64,7 +70,7 @@ public abstract class AbstractDao<T extends StrolchElement> implements StrolchDa
 	@Override
 	public long querySize(String type) {
 		SubTypeRef subTypeRef = getTypeRef(type);
-		return tx.getMetadataDao().querySize(subTypeRef);
+		return this.tx.getMetadataDao().querySize(subTypeRef);
 	}
 
 	@Override