If what you want to *produce* is xls or xlsx, you might want to look into the Apache POI project. That project provides Java libraries for manipulating and producing such documents. <http://poi.apache.org/>
If what you want to *produce* is ods, then the Apache ODF Toolkit might suite you. It is also Java based. <http://incubator.apache.org/odftoolkit/> Or some combination of the two. Otherwise, I think the best option is the OpenOffice SDK. There is, of course, document model and library access available within Microsoft Office and Visual Studio extensions for Microsoft Office. I assume that is not an option for you, although I would think the performance of consuming the documents you are producing might be an issue to address as well, and that might be a better place to address it. - Dennis PS: CSV is always an option. It doesn't work for formulas and cell coloring, etc., though. There is a form of single-file Excel spreadsheet in XML that might be suitable. There are also HTML formats for XML spreadsheets that might be easier to emit. Your document might be too complicated or too large for these cases. One way to find out is to make a small version having the essential features you need, in Excel, and then see whether and how well those are produced in flat XML and HTML. Then you can examine them for the structure that you need to replicate with greater-sized documents. Scaling experiments can be conducted to determine if these are feasible to produce at your size and also to consume by the intended recipients. -----Original Message----- From: Mariusz `shd` Gliwiński [mailto:alienballa...@gmail.com] Sent: Monday, July 15, 2013 02:55 AM To: users@openoffice.apache.org Subject: [dev] Performance of exporting through open office Hello, i'm looking for options of exporting fairly large XLS,XLSX documents through openoffice. The basic requirement i currently have is to export 300_000*30 cell documents. We need colouring and formulas for documents too (at least smaller ones). We've been using external libraries for it, but because of performance and feature-set i've been thinking about going 'native' with OO. I'm completely green in OO project, however i tried example java project with UNO which was horribly slow. My guess is - most of performance and memory is used for rendering and other ui-things. Finally, my question to you is: * what API should i look on, to format my sheets through openoffice libraries (XLS,XLSX,CSV) - ideally i'd like to access document model instead of statelessly format file (if it's realistic to don't eat-up more than 5Gig memory) * do you think, that using OO components in my situation is a right thing to do? or maybe should i look for external libraries? Or maybe native / good implentation wont help too much, and i should use simple implementation for big documents vs. feature-rich implementation for small documents? Thanks in advance, Mariusz Gliwiński --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@openoffice.apache.org For additional commands, e-mail: users-h...@openoffice.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@openoffice.apache.org For additional commands, e-mail: users-h...@openoffice.apache.org
