anchor.diff:  int numRemaining = 0;
   
   int sortBy = MappingData.COL_SOURCE_CODE;
  +
   int prevSortBy = MappingData.COL_SOURCE_CODE;
   
   String sortByStr = request.getParameter("sortBy");
   if (sortByStr != null) {
       sortBy = Integer.parseInt(sortByStr);
   }
  +
  +System.out.println("SORT_BY: " + sortBy);
  +
   
   String prevSortByStr = (String) request.getSession().getAttribute("sortBy");
   if (prevSortByStr != null) {
  
positive.code: 
  if (resultsPerPage != null) {
      bean.setPageSize(Integer.parseInt(resultsPerPage));
     
  }
  
  
  
negative.code: 
  
  
  System.out.println("(* KLO) mapping.jsp mapping_schema: " + mapping_schema);
  
  MappingIteratorBean bean = (MappingIteratorBean) scheme2MappingIteratorBeanMap.get(mapping_schema);
  if (bean == null) {
      System.out.println("(* KLO) bean == null -- initialize MappingIteratorBean.");
      //bean = new MappingIteratorBean();
      // initialization
      iterator = DataUtils.getMappingDataIterator(mapping_schema, mapping_version, sortBy);
  