Re: Strategic Java Usage

Beppe,

On Mittwoch, 17. März 2004 11:00, Beppe Costagliola wrote:
> Dieter,
> maybe you are working in a companu that lets you do what you want.

Yes, I do, I'm self employed :))

>
> But can you just tell us what the hundreds of other companies could do with
> their skilled RPG programmers (some of them at fifty and more, some of them
> very experienced, etc) ?

I have had this problems some years ago; 100% of my employes were skilled rpg 
programmers.

> Fire them all and replace with young java-super-experienced ones ?
>
I didn't fire myself, I started to learn new technologies, first sql, than 
java, that's not related to the age of the programmer, I'm more than 50 years 
old. And I don't see any need to fire skilled programmer's. There would be 
more already existing rpg code than rpg programmers in the future, as long as 
ibm supports the as400.

> And furthermore what to do with the thousands of RPG programs, most of them
> working fine and error- free?
> Rewrite all (using the young programmers hired above) ?
>
let all work as it is, what's not needing to change. Start to write new code 
with new technologies.

> I think that mixing java and existing RPG/COBOL code can be the right way
> to start enter the new technology in a smooth way,  giving opportunity to
> learn the new language to those that want (and can) to do so,  to evaluate
> pro's and con's in each situation, and to invest in new hardware and
> software according to each company needs and budget.
>
If you are able to walk at the land, there is no "smooth way" to learn how to 
swim in the water, you have to get in, to do so.


> In a company very often , there are "strategic" issues that go beyond
> measuring the cpu micoseconds taken by an applet.
>
Here I would agree with you (besides the applet, most java code is server 
code)

Dieter

> Beppe.
>
> ----- Original Message -----
> From: "Dieter Bender" <dieter.bender@xxxxxxxxxxxx>
> To: "Java Programming on and around the iSeries / AS400"
> <java400-l@xxxxxxxxxxxx>
> Sent: Wednesday, March 17, 2004 10:15 AM
> Subject: Re: Strategic Java Usage
>
> > Nathan,
> >
> > On Dienstag, 16. März 2004 18:51, Nathan M. Andelin wrote:
> > > > In the referenced example, the Java component to
> > > > display a list of employees and departments is
> > > > exactly the same.
> > > >
> > > > This means that any requirement to select, display,
> > > > edit, delete database records can be generically
> > > > handled via a single component thus saving huge
> > > > amount of redundant programming.
> > > >
> > > > RPG simply cannot accomplish this.
> > >
> > > Actually, it can be done in RPG.  For reference see:
> > >
> > > http://www.wrkdbf.com/
> >
> > Would never say never, but it doesn't seem to me that wrkdbf could plug
> > in business logic without changes, and a file editor doesn't help too
> > much in application development.
> >
> > > It would be possible to create an ILE *SRVPGM, exporting a utilitarian
> > > interface for database maintenance, and bind Web applications to it.
> > >
> > > We'd probably want Web applications to support custom HTML interfaces,
> > > rather than having a generic (utilitarian) user interface for every
> > > application.
> >
> > I ever died on the problem, that every service programm could be
> > activated only once per activation group. Pressing F4 in the order
> > subfile to select the custumor clears the state of the order process.
> > There might be out
>
> some
>
> > guys even managing this with rpg and DTAQs and..., but for me it seems
>
> more
>
> > easy to solve such problems using java.
> >
> > > But if we were to go that route, wouldn't we need to consider the cost
>
> of
>
> > > either inheriting (Java) or binding with (ILE) a comparatively large
> > > "utility" for every maintenance program or Servlet we deploy?  Wouldn't
> > > there be performance implications according to the number of programs
> > > or Servlets deployed?
> > >
> > > > For reasons not 100% clear to me.. the AS/400 Java
> > > > performance seems to stink.  I've had and helped 3
> > > > clients move their apps to Windows and see the
> > > > performance improve dramatically.
> > >
> > > It could be the speed of the CPU.  IBM synchronizes CPU speed with CPW
> > > targets.  A box running a 4 year old 200 MHz Northstar chip, might
>
> actually
>
> > > be 4 times slower than a box running a 7 year old 100 MHz Apache chip,
> > > according to CPU bound benchmarks.  Hint: get a fast CPU.
> > >
> > > Wintel boxes have cheap, fast CPU's, but they don't manage complex
> > > workloads effectively.  Try running a large Oracle database and
>
> Websphere
>
> > > on a single Wintel server, generating reports at the same time as
>
> serving
>
> > > Web pages, and you'll appreciate the performance capabilities of
> > > OS/400.
> >
> > Why should anyone run database and websphere on one box??? And doing it
>
> this
>
> > way on a single processor as400 doesn't really work too.
> >
> > Dieter Bender
> >
> > > Nathan.
> > >
> > >
> > >
> > >
> > > _______________________________________________
> > > This is the Java Programming on and around the iSeries / AS400
>
> (JAVA400-L)
>
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> >
> > --
> > mfG
> >
> > Dieter Bender
> >
> >
> > DV-Beratung Dieter Bender
> > Wetzlarerstr. 25
> > 35435 Wettenberg
> > Tel. +49 641 9805855
> > Fax +49 641 9805856
> > www.bender-dv.de
> > eMail dieter.bender@xxxxxxxxxxxx
> >
> > _______________________________________________
> > This is the Java Programming on and around the iSeries / AS400
> > (JAVA400-L)
>
> mailing list
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>
> _______________________________________________
> This is the Java Programming on and around the iSeries / AS400 (JAVA400-L)
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> visit: http://lists.midrange.com/mailman/listinfo/java400-l
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-- 
mfG

Dieter Bender


DV-Beratung Dieter Bender
Wetzlarerstr. 25
35435 Wettenberg
Tel. +49 641 9805855
Fax +49 641 9805856
www.bender-dv.de
eMail dieter.bender@xxxxxxxxxxxx