This week's book giveaway is in the Performance forum. We're giving away four copies of The Java Performance Companion and have Charlie Hunt, Monica Beckwith, Poonam Parhar, & Bengt Rutisson on-line! See this thread for details.
Scrollable pages ================ I have a jsp search page that I want to implement as scrollable. There is a a search criteria on top and then there can be 20 lines of found lines. At the bottom there is a forward and a Next button ,in order to get next 20. At the botton there is a text something like: Lines 1 to 20 of 2000 My application Server is located in host_A and my dataBase is in host_B. Assume that I want to read the database and populate the screen for first page. That means I'm only interested in the first 20 rows and the total number of rows in the resultset.
Problem 1: Since I'm only want the first 20 rows I don't want to move 2000 rows over the net (performance), how can I prevent that ? Is there any possibility in the sql ? problem 2: How can I find out the the total number of rows in the resultset without reading through it ? There is no method in ResultSet... I've tried the last() method but that seems equalily as slow. regards Per Lovdinger