RE: User Spaces

[Joel Cochran <jrc@xxxxxxxxxx>]

Now I really feel dumb: what is a "user index" and how do I use MI
instructions? 

Joel
http://www.rpgnext.com


On Thu, 2003-10-30 at 12:32, Bob cozzi wrote:
> Joel,
> That would be fine, but you might consider storing the stuff in a user index
> and then using the MI instructions to access the index and get the values.
> You could also use the APIs to get the entries but that's a little
> counterproductive since the overhead of the program call to the API probably
> would diminish anything gained by using the indexes. 
> 
> 
> Bob Cozzi
> Cozzi Consulting
> www.rpgiv.com
> 
> 
> -----Original Message-----
> From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx]
> On Behalf Of Joel Cochran
> Sent: Wednesday, October 29, 2003 10:06 AM
> To: RPG programming on the AS400 / iSeries
> Subject: User Spaces
> 
> Along the lines of the recent thread regarding DataQueues, I'm trying to
> determine whether or not to use User Spaces for a particular project. 
> They sound intriguing, but having never used them before I'm not sure if
> they are correct for this application:
> 
> For a new application we are writing there will be a security
> configuration file.  Each user will have authorities set at the option
> and function key level.  Naturally this is all DB driven, but in essence
> each authority gets verified at three differenct levels.  At screen
> display time to determine whether or not to display an option; at option
> processing time to verify that the user did not select an unauthorized
> option, and at processing time to make sure that no back doors were
> taken in getting there.
> 
> Given that this processing will need to take place for every screen,
> selection, and processing, it appears to me that this may be overly
> burdensome on the DB.  So to bring this back to User Spaces, I'm
> wondering if it would be better for us to read the authorities in once
> when the user signs into the application, store them in a User Space
> unique to that log in, and then access the user space for the
> verification instead of the DB.  I'd probably create the User Space in
> QTEMP so that the GC is taken care of automatically.
> 
> Would this be faster, better, etc, or am I making a mountain out of a
> mole hill?
> 
> Thanks,
> 
> Joel
> http://www.rpgnext.com
> 
> 
> 
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