Re: Is RPG dying

Dieter,



Writing in English, I also try to do my very best since my primarily
language is Danish and RPG.



I did participate in IBM’s San Francisco project that was pure JAVA but to
be frank I found it all to complicate for several reasons and the UI wasn’t
exactly designed by Pininfarina, so I have looked outside the RPG community
and what I do today on the client side isn’t even close to RPG or server
programming – I have just chosen another path than you.



Even though I still spend time in a RPG/IBM midrange group since I have
known some of these guys for nearly 40 years, I spend more time in OO
javascript groups among younger people that burns for creating browser
based UI’s and binary APP’s and who doesn’t care about the technology on
the server side.



My force is that I can deliver the server side and the JSON glue that binds
the client and server together (XML is considered as old fashion) and
within many business applications I also know the overall general business
rules that applies for that particular application e.g. what is
debit/credit, what is a “leg” or “bunker” within shipping terms or what
does 28/30, 30/32, 32/34, 34/36, 36/38, 38/40, 40/42, 42/44,
44+,30/34,34/38,36/40,38/42 mean for the casing used for a sausage?



My weakness is that I don’t send 100 SMS a day, I don’t Tweet, I don’t put
my life on Facebook and I don’t even own or use an iPhone – in other words
– I’m unfamiliar with what young users expects .

On Thu, Feb 23, 2012 at 6:19 PM, Vern Hamberg <vhamberg@xxxxxxxxxxx> wrote:

Hi James

Responding not to your reply but to what you replied to - was that
confusing?

Of course we can add events to the cycle. A select-when on function keys
adds events all the time.

People talk of OO and event-driven as if it's something new. I suggest
that it is rather a codification of coding styles people have come up with.

I believe that, whether RPG/COBOL developers know it, they often use OO
principles. The languages do not support it well natively, and you have
to put in the constructs yourself to make it work. But the principles of
OO, such as encapsulation, can be utilized effectively in any language.

Vern

On 2/23/2012 10:59 AM, James Lampert wrote:

The RPG cycle is
most certainly an event-driven process. the handlers used with
XML-INTO, XML-SAX, or Open Access are also coded in an event-driven

fashion.

**************

Well ok, you could say it is event driven. But most (non-RPG)

programmers

wouldn't call it like that. The problem with this implementation

(besides

that these events are triggered within a specific structure/order) is

that

there is some coupling between the event and code.

. . .

Also, you can't simply add your own events.

. . .

Both of you miss the point: While it's debatable whether or not "total
time" or "initialization" qualify as "events," The Cycle itself *is* a
ready-made event-loop, repeating the main body of the program until some
*event* (whether a primary file running out of records, or something
explicitly setting on LR) tells it to shut down, and in which various
other *events* are responded to in various ways.

--
JHHL

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