[rules-users] drools persistence contract

[Mark Proctor]

On 20/10/2011 12:49, Mauricio Salatino wrote:
> Hi Michal,
> I'm not aware of any changes.. but we need to check with mark and kris 
> for the timers stuff that now are being persisted.
> My gut feeling is that usually if you are playing with binaries it's 
> very difficult to keep that compatible with old versions. Also you 
> mention that you are moving from 5.1 to 5.3 right? It's at least 6 
> months of changes.
I believe there is binary compatability kept for jBPM. Kris can provide 
more details.

Due to the extreme complexity of rule persistence, we have not 
maintained previous version compatability. Going forward from Drools 5.3 
we will make sure that migration is always possible.

It is possible to migrate Drools (rules) 5.2 but you'll have to hack 
your own script, look at the OutputMarshaller and InputMarshaller for 
5.2, you can use those to make a migration helper class. Going forward 
for 5.3 we will take care of that for you.

Mark
> My two cents..
> Cheers
>
>
> On Thu, Oct 20, 2011 at 6:42 AM, michalbali <michalbali at gmail.com 
> <mailto:michalbali at gmail.com>> wrote:
>
>     Hi again,
>
>     Anyone? It would be nice to get a confirmation that migration of
>     persisted
>     session/processes is not possible when upgrading Drools.
>
>     Thank you!
>     Best regards,
>     Michal
>
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