private QueryBuilder buildSort(){
  QueryBuilder builder=new QueryBuilder();
  Iterator<String> sortIterator=mSortingOrderList.iterator();
  while (sortIterator.hasNext()) {
    builder.append(sortIterator.next());
    if (sortIterator.hasNext())     builder.append(", ");
  }
  return builder;
}

private QueryBuilder buildSort ( ) { QueryBuilder builder = new QueryBuilder ( ) ; Iterator < String > sortIterator = mSortingOrderList . iterator ( ) ; while ( sortIterator . hasNext ( ) ) { builder . append ( sortIterator . next ( ) ) ; if ( sortIterator . hasNext ( ) ) builder . append ( ", " ) ; } return builder ; }
builds the sort query
