code: @Override
      protected RDBMSEntityReader getReader()
      {
          if (reader == null)
          {
              reader = new RDBMSEntityReader(getJPAQuery(), kunderaQuery, kunderaMetadata);
          }
          return reader;
      }
docs: /*
  (non-Javadoc)
  
  @see com.impetus.kundera.query.QueryImpl#getReader()