On Fri, 2011-04-08 at 10:35 +0200, Milan Crha wrote: > On Fri, 2011-04-08 at 10:04 +0200, Christian Hilberg wrote: > > We could use Evolution's file-link attachment mechanism by writing into > > Evos > > file cache from the backend and placing the file paths into the > > ECalComponent > > when reading calendar objects from the Kolab server, and read attachment > > file > > data from this same cache when creating a new object with attached files. > > We > > found a whole lot of issues with this approach (at least for Evo2.30), > > which I > > can detail if anyone is interested. > > Hi, > CalDAV calendar plugin uses this approach, and it seems to work. It's > surely better than passing rather-long attachments over the wire (D-Bus) > in both ways. Check the CalDAV sources how it's done there, maybe you > would be able to mimic that approach.
That's what we're doing in EWS, too. We store the attachments into the backend's cache directory as obtained by e_cal_backend_get_cache_dir(), and we set a file:// URL to point to them there. (If you have the MIME Content-Type: for it, don't forget to put that into a FMTTYPE parameter in the ical ATTACH property.) I'm actually not *entirely* happy with that approach; I didn't really want to fetch all the attachments in advance. I'd prefer to fetch them on demand, instead. I was toying with the idea of adding a new URL scheme to represent the 'location' of such attachments, and working out how to make that work in Evolution. It would presumably need to translate into a DBus call to evolution-data-server, and some method of passing the data back. Perhaps the best option is to have a call to EDS which asks it to 'resolve' the attachment into a local file URL instead of a remote one? For now, I've just stuck with the naïve approach of fetching them all in advance, but I'd like to have a plan for how to fix that, when it bubbles up to the top of my TODO list for EWS. And you may want something similar for kolab? -- dwmw2 _______________________________________________ evolution-hackers mailing list email@example.com To change your list options or unsubscribe, visit ... http://mail.gnome.org/mailman/listinfo/evolution-hackers