regarding jasper reports

[ganesh kamalraj]

Hi there
 
i just want to ask whether the jasperviewer has the same functionality as the crystal report's paging?
 
When jasperviewer retrieves data from the database, does it retrieves all data or just retrieves it page by page? What if i got millions of data? does it still retrieve all? if so, whts the alternate way?
 
plz advice.. thanks
kamal
 

[Joan Horta Tosas]

It retrieves all data, but I think that if expected large amount of pages, there's some option to tell it to store temporary output to disk so it will no get an OutOfMemoryException. But if you plan to get such large reports, better do some type of schedulling to run them while the server is not much loaded.