Re: Call Java program from RPGLE

Hi
So it actually works pretty well, calling Java from
RPG,
My requirement is to call a web service, from AS400
application,
So i was trying to find, if i can call web service
directly from RPGLE program, or call a java program
from RPGLE which in turn would call the web service.
Any hints or ideas about it

Ashish
--- Carl <c.groner@xxxxxxxxx> wrote:

On Thu, Mar 6, 2008 at 12:54 PM, Thorbjørn Ravn
Andersen
<thunderaxiom@xxxxxxxxx> wrote:

David Gibbs skrev den 06-03-2008 19:35:

This PDF is a good reference:

>

http://publibfp.boulder.ibm.com/pubs/html/as400/v5r1/ic2929/books/c0925073.pdf

>
> Just search for the term java.
>
As a curious byseer, is there any who have worked

with this who can say

how well it works in terms of speed,

maintainability (how fragile is

this?) and general usefulness?

Always willing to learn something new :)

I'm a big fan of calling Java from RPG, and use it
regularly with
great success... both in batch and interactive jobs.

Some areas where I'm using it in production include
sending formatted
email reports, service and customer notifications
via email (using
javamail and the apache velocity template engine). I
also use it in
mid level networking code as I find dealing with
sockets in java to be
much, much simpler than any c or RPG code I've come
across.

It's nice to be able to take advantage of many of
Java's strong points
from within RPG (such as XML parsing/building
(JDOM), string handling
and manipulation, regular expressions... I could go
on...). I also
find that prototyping on java standard library
objects allows me to
essentially extend the RPG language to fit my needs;
no associative
arrays in RPG, no problem, just prototype and
instantiate a new Java
collections object like a HashMap, viola! Simple
custom class wrappers
can be used to translate '400 data types to the java
equivalents.

One more point worth noting is that using java
objects allows you to
add some level of object oriented structure/support
to your RPG code,
which worked nicely for me in many situations.

Cheers,
Carl.
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