Re: calling RPG programs

Ketan wrote:
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I am relatively new to java on AS/400
anyway...i need some help on the following


We have some RPG IV programs(basically they are search engines which take  in
some parameters and return a result set on the screen)
   We are planning to make it web enabled(rather we have to).
   So instaed of writing the complete code again in JAVA i m trying to explore
HOW i can do the same by calling a exsisting RPG program from a applet.


any help on the above will be highly appreciated.
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Ketan, there are several ways to present data fomr an RPG program to a browser.
An applet is probably the last one I would choose; downloading the applet code
to the browser is more overhead than is necessary, especially since you are
simply getting data and replying with other data.

In your case, either CGI or better yet a servlet might be the way to go.  Your
use requests a URL, which can be a static HTML page which presents a form.  The
user fills in the data, then hits the submit button.  At this point, your
webserver can call either an RPG program (CGI) or a Java program (servlet) to
process the request.  In either case, the called program then generates the HTML
required to display the data (probably a simple HTML table) and outputs it.

A more advanced technique is to use JavaServer Pages (JSP) to handle the data.
With JSP, a servlet responds to the request and creates a JavaBean with the
results set.  It then passes control to an HTML page with embedded JSP tags.
These tags can directly call the JavaBean and display the results.  However,
this technique, although very flexible, is probably more than you need.

Joe Pluta
http://www.zappie.net/ - Zappie! - where the AS/400 speaks Java with an RPG
accent
Home of PBD1.2, the FREE Java/400 Client/Server Toolkit



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