Re: [Gnumed-devel] Data packs

[Jim Busser]

On 2011-09-25, at 11:39 AM, Karsten Hilbert wrote:

>> Presumably, it is a good thing that the Cancel button in
>> the data pack picker dialog is included in what is blocked?
> 
> I don't think that's a good thing. I don't know how to
> change it though.

When a data pack is in the midst of running, there could be side effects to 
interrupting it.

Supposing it would be interrupted by either a Cancel button (if such a button 
could be accessible) or by a Ctrl- key, what then?

Ideally, data packs will all be written so that each module or section 
contained therein, in the case of interruption, will not leave the database in 
some incoherent state. I imagine that, to achieve this, each self-contained 
"subpack" should be wrapped in its own transaction.

What I don't know is whether -- in the case of interruptions invoked from 
outside the script -- the transaction will remain "open" such that new activity 
in GNUmed will be lost on account of delayed failure of a commit.

-- Jim