I have several KJob jobs, some of which may run in parallel, some depend on the results of one or more others, and all of them are fallible. The context is Akonadi, but I think my question is generic.
I want to retrieve items from several Akonadi collections and act on them. By the nature of the (prefered) interface, the individual steps executed asynchronously as KJobs. The parts are these: I launch several retrieval jobs and want to know when all of them have finished. If one of them fails, all others are killed and failure is signaled. As far as I can tell, there's no pre-build way to group jobs in such a way as to be notified when all of them have finished. Therefore, apparently I need to do the synchronization myself, possibly by connecting to each jobs result signal and keeping track of how many are still active. For chaining jobs, I need to glue them together so that the result of one is passed as an argument to the next. Of course, if an error occurs, the chain ought to be broken. For all this I can write very specific code -- and do it again the next time I want to do something similar. I'd rather not do that. Instead, I'd like to connect independent pieces that are ignorant of each other. It's time for some code. I've given up on the synchronizing and just tried some painfully non-generic chaining. https://github.com/mschuerig/akonadiexport I don't like that code at all, but I'm lacking a good idea how to improve it. Michael -- Michael Schuerig mailto:mich...@schuerig.de http://www.schuerig.de/michael/ >> Visit http://mail.kde.org/mailman/listinfo/kde-devel#unsub to unsubscribe <<
