Re: EJB versus RPG/COBOL

Hi Evan,

in an object oriented language, using a good composed design, the complete 
paging and selection logic would be one component for all the subfile stuff. 
The whole world outside the rpg ghetto would be LOFLOL if they would read the 
theories about application design by mixing up rpg and java and the examples 
for great performance in the subsecond region per transaction, doing nothing.

Dieter


On Donnerstag, 11. März 2004 20:20, Evan Harris wrote:
> Hi Dieter
>
> this is not a forum I usually speak in :) but I was motivated to respond to
> your comment regarding "thousands of subfile programs doing all the same
> stuff".
>
> I my view the subfile capability provided by the AS/400 could more fairly
> be compared to a VB data grid or a higher level tool than a straight
> language issue. There are thousands of subfile applications because there
> are thousands of different business.
>
> The real insight into what OS/400 buys you, and by extension in this
> discussion what RPG buys you, is that those thousands of subfile programs
> didn't also need to have all the supporting logic surrounding paging, item
> positioning, item selection etc etc built in each of the applications, it
> was provided by the OS.
>
> There would be a ton of additional logic required to code this level of
> presentation in any other language without the use of the components that
> you claim provide Java's advantage so your comparison is somewhat unfair,
> IMHO. :)
>
> Regards
> Evan Harris
>
> >One of the points for writing java applications is the existence of quite
> > a lot of opensource components making it easy and eficcient to write
> > business applications in java. If I have a look to rpg applications, the
> > wheel is reinvented over and over, thousends of subfile programms doing
> > all the same stuff. In a well designed Java app, you have STRUTS for
> > example, and some JSPs doing all this, you have a persistence layer done
> > by OJB for instance, with or without Entity Beans.
>
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-- 
mfG

Dieter Bender


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