code: private void _deserializeQueryField(Query query, Element field) throws PageException, ConverterException {
  	String name = field.getAttribute("name");
  	NodeList list = field.getChildNodes();
  	int len = list.getLength();
  	int count = 0;
  	for (int i = 0; i < len; i++) {
  	    Node node = list.item(i);
  	    if (node instanceof Element) {
  		query.setAt(KeyImpl.init(name), ++count, _deserialize((Element) node));
  	    }
  	}
  
      }
docs: deserilize a single Field of a query WDDX Object
  
  @param query
  @param field
  @throws ConverterException
  @throws PageException