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Re: [bpel-dev] Undo for namespaces change
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Hi Simon,
I think that we should be able to undo changes done in source tab in
design view and vice versa. This is why we may want to have effects in
graphical view.
I've looked at this problem a little deeper and it seem that we have
big inconsistency in how whole undo mechanism behaves. We're having
two completely independent stacks for design and source views. And
wrapping reconciliation into UpdateModelCommand results in following:
we change something in source tab, switch to design, undo text change,
and source tab has 2 undo's instead of 0.
To fix this problem I see two ways. To have one command stack for both
tabs. Or to have some kind of placeholder command that says that undo
should be done in other stack.
I'll take a look at your scenario with disappearing activities and try
to find out where the problem is if I manage to reproduce it.
Thanks,
Dennis
2008/2/13, Simon D Moser <SMOSER@xxxxxxxxxx>:
> Hi Dennis,
>
> mmh, the problem here is that EMF EObject, unlike DOM nodes, do not carry
> around the namespaces. Therefore, this can be changed on a DOM level, but
> since that change wouldnt be visible in the rgaphical BPEL, EMF doesn't
> care. Only the BPEL writer cares. This is a tricky question actually.
>
> Why would we want that (== change of a namespace prefix) to have effects in
> the graphical view anyway ? Is there any reason for that (I am asking that
> stupid because I don't see any reason) ?
>
> Cheers
> Simon
>
> ps..: By the way, I found yesterday that when you create a process that has
> a structued activity (lets say a sequence, and then a while in that
> sequence, and then a something else in the while), and you save and close
> everything is fine. But once you reopen the process, then the inner
> activities are lost (at least in the graphical view). To me this might be
> caused by the DOM Facading work - did anyone of you ever notice that ? Or
> is this just happening on my machine ?
>
> Simon Moser, M.Eng.
>
>
>
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> From: "Dennis Ushakov" <dennis.ushakov@xxxxxxxxx>
>
> To: "BPEL Designer project developer discussions." <bpel-dev@xxxxxxxxxxx>
>
> Date: 13.02.2008 16:10
>
> Subject: [bpel-dev] Undo for namespaces change
>
>
>
>
>
>
>
> Hi!
>
> I'm currently working on making namespaces support in BPEL Editor
> correct. Currently version in repository is working correctly only
> with "bpws" prefix for BPEL elements. I've fixed this problem and some
> others regarding creation of elements with correct namespace prefix.
> But I've got one issue left.
> If I edit namespace prefix or url in source tab I can easily undo my
> changes in the source tab. But to be able to undo these changes from
> design view I need to add undo command to design view command stack.
> It seems to me that UpdateModel cannot be used because EMF-object
> doesn't notify about namespace change. It simply has no such feature.
> Could you give me a clue how should such a command be implemented? Or
> is it better to introduce some feature to notify recorder about
> namespace changes?
>
> Thanks,
> Dennis
>
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