Code for a search engine front end

Question

I am implementing lucene on my site, i wrote some code that shows something like this:
displaying results 11-20 of 3434
1. url / description
2. url / description
page 1, 2, _3_, 4 .. 25 [next] [prev]for some reason i found this not so easy to write as i thought. calculating all those ranges etc. (the results per page is user defined). Now i am looking at my code and it seems ugly.
so im wondering if anyone knows of an example implementation of that in java / jsp?
i looked at nutch but its search front end is a mess of jsp java includes and is plain ugly.

Answer 1

here is the code that figures out the first and last result on the page based on how many results are found, how many are on a page, and what page we are on.
totalResults  = results.length();
          double totalPagesDbl = ((double)totalResults)/((double)resultsPerPage);
          totalPages = (int)Math.ceil(totalPagesDbl);
          if(currentPage >= totalPages) {
               currentPage = totalPages;
          resultsPerPage = (resultsPerPage <= totalResults)?resultsPerPage:totalResults;//how many on this page
          endingResult = resultsPerPage * currentPage;
          if(endingResult > totalResults) {
               startingResult = endingResult - resultsPerPage;
               endingResult = totalResults;
          } else {
               startingResult = endingResult - resultsPerPage;               
          if(startingResult > endingResult) {
               startingResult = endingResult -1;
          }it used to be worse, i rewrote it