RE: framework question -- JAVA400-L

>My position is that it is not, and that except for the most trivial
applications I can write business logic much more quickly and flexibly in
RPG than any other language.

I want to pick on the "...and flexibly..." in that sentence.  I have
wondered for some time why Java couldn't be used for business logic if you
used it in the same capacity as RPG ILE would allow you.  Basically you
could translate that sentence to say "Couldn't you just write procedural
modular Java?".  People too often assume that when you go Java that you have
to develop everything to a purists OO standards, and that just isn't the
case (as I know from coding my first years worth of Java :-)

My view on Java would be that you should use it where it works good for you;
and the only way you are going to find that out is by trying it in different
scenarios.  I don't see why Java couldn't be good at business logic, but in
the same breath, I have only developed a handful of JavaBeans that do so.
Most of my Java work is communications layer stuff because Java was the
obvious answer in that arena.

Aaron Bartell 

-----Original Message-----
From: java400-l-bounces@xxxxxxxxxxxx [mailto:java400-l-bounces@xxxxxxxxxxxx]
On Behalf Of Joe Pluta
Sent: Wednesday, June 30, 2004 12:23 PM
To: 'Java Programming on and around the iSeries / AS400'
Subject: RE: framework question

> this is a quite questionable statement. I dont want to miss 
> specialisation of real world objects by the use of inheritance.
> I can easily demonstrate 100 places where this makes sense, its starts 
> in the range of persistence...

Please demonstrate a few.  And persistence is not an application
requirement, it's an architectural issue.  Name places in business
applications where inheritance works better than composition.


> But there are many oppinions about that. Think of one fact, no modern 
> language comes without inheritance.
> The last 5-6 languages created the last years in fact are all
completely
> OO based. (Python, C#, Ruby, Java,...)

None of those languages is any good for business logic, though.

Also, your statement depends on what you consider a language.  ILE RPG is
all but a completely new language, and it does not have inheritance.

And in any case, the point is not whether inheritance is good or bad, but
whether it is appropriate for business programming.  My position is that it
is not, and that except for the most trivial applications I can write
business logic much more quickly and flexibly in RPG than any other
language.

Joe 

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