code: @Override
      protected int onExecuteUpdate() {
          if (kunderaQuery.isDeleteUpdate()) {
              List result = getResultList();
              return result != null ? result.size() : 0;
          }
  
          return 0;
  
      }
docs: /*
  (non-Javadoc)
  
  @see com.impetus.kundera.query.QueryImpl#onExecuteUpdate()