Hi Tom, 

Right now, writing an evolution backend requires quite a knowledge of how evo works and it's internal api, (and I find
it's not really that well documented). It would be nice if revolution would allow us to write calendar/task/contact_book
backends in pure ruby.


V. Seguí

Date: 2005-08-11 08:23
Sender: Vicent Seguí

Hi Tom,

 I've found this page wich talks about implementing a
backend (among many other things about evo):

http://go-evolution.org/EDS_Architecture#Calendar

It seems quite straightforward (no dbus/corba magic). I just
have a doubt on how we can make a ruby binding, Since it's
eds calling us this time, every function would have to call
our class, which means that every class we have must have
it's own module. E.g.

class MyCalBackend < Revolution::Backend

end

Then the makefile will have to generate a libMyCalBackend.so
that we must place in the appropiate dir. 

I have a feeling this is clumsy, but I otherwise see no way
around it.

V. Seguí

Date: 2005-08-10 20:54
Sender: Tom Copeland

Cool, sounds good.  Good stuff is happening with Evolution these
days; it's cool that Tor is porting it to Windows as well.  He's
cleaning up all kinds of things along the way, it seems.

Yours,

Tom

Date: 2005-08-10 20:34
Sender: Nobody

Hi Tom,

 I've just checked the list and it seems that there is an EDS
port to Dbus on track(*), so I think we can wait until that gets
in (it seems like it will be soon). OTOH, eds backends can be
built from libraries or CORBA.


(*) http://lists.ximian.com/pipermail/evolution-hackers/2005-Augu
st/006189.html

Date: 2005-08-10 14:25
Sender: Vicent Seguí

Hi Tom,

From what I've gathered CORBA is only needed for hooking UI
plugins into evo. e-d-s backends are normal libraries AFAICT.

I know the guys from planner
(http://developer.imendio.com/wiki/Planner) have built a
backend to integrate planner and evo, maybe they could give
us a clue, boiler plate code, etc.

V. Seguí 

Date: 2005-08-10 12:39
Sender: Tom Copeland

Hi Vicent -

Yup, there's been some discussion of that on evolution-hackers
as well.  I guess it's a pretty tricky job, even in C.

I wonder how it would be done in Ruby.  Don't the e-d-s
implementations use a CORBA interface to get the method calls?
Any idea if Ruby has a CORBA binding thingy?

Yours,

Tom