Re: 5250 and un-do

[Booth Martin <booth@xxxxxxxxxxxx>]

Commit and rollback, if I understand it, is one-shot deal.  If you make 
15 entries and then rollback you lose all 15 changes.  If you commit, 
you lose all rollbacks.  This may well be wrong; my understanding of 
commit & rollback is limited.

The business thing is a subfile of data, say 4 columns, all can be 
changed, deleted, or even added.  Whether the data file is updated or 
not is related, yes, but not immediately relevant to the situation that 
concerns me.  updated or not, I want to replicate the Ctrl-z behavior 
and be able to undo changes, one at a time, for, say, 15 changes or 
until start of the session.

My first thought is that I have to keep an array of changes and read 
them back 1 at a time but this has got to be a wheel that is already 
invented?  The rest of the world has had repeat un-do for 30+ years.



On 12/16/2017 9:51 AM, Buck Calabro wrote:
> On 16 December 2017 at 10:21, Booth Martin <booth@xxxxxxxxxxxx> wrote:
> > Is there an repeat-undo process in RPG?  Something similar to Ctrl-z in text
> > editors?
> I was going to suggest COMIT and ROLBK but I got mentally hung up on 'editor'.
> What business thing are you trying to do?
>    --buck