RE: doing things backwards

[Joel Fritz <JFritz@xxxxxxxxxxxxxxxx>]

Thanks, Joe. At least now I know.  Actually data queues seem like a
reasonable alternative.

> -----Original Message-----
> From: pluta@nexgensoftware.com [mailto:pluta@nexgensoftware.com]
> Sent: Tuesday, August 31, 1999 10:20 AM
> To: JAVA400-L@midrange.com
> Subject: RE: doing things backwards
> 
> 
> 
> 
> 
> It seems to me you're talking about calling RPG from java.  
> I'm talking
> about calling java from RPG.  We've talked about the obvious 
> ways--java pgm
> writes to file, java pgm writes to dataqueue, RPG pgm calls 
> stdout APIs.  I
> was curious if there were a simple way to call a java pgm 
> from an RPG pgm in
> the manner of a normal dynamic call.
> --------
> And unfortunately, the answer at this time is no.  My current 
> wishlist is to be
> able to compile a Java class and invoke it as a service 
> program or bind it as a
> module.  Of course, there are some issues with that; do you 
> instantiate a new
> object?  With a parameterless constructor?  Or can you pass 
> parameters on the
> invocation?  Or do you have to invoke a static factory 
> method?  I can see how
> there might be some issues on merging the static 
> "object-based" world of OS/400
> (at least the part we application programmers see) with the 
> true object-oriented
> nature of Java.  And of course, there's the issue of bytecode 
> interpretation at
> runtime; I'd guess that causes some concerns for the security 
> folks.  Since the
> bytecode model is documented, could this allow the entrance 
> of hackers and
> viruses?
> 
> I'd love to know what IBM's take is on all this.  I'd just 
> like to know what
> their direction is; it would certainly allow me to be a more 
> vocal advocate of
> server-side Java than I am today (and those who know me know 
> I'm an absolute
> fanatic on the subject of client-side Java - I only wish I 
> could be so fervent
> on the other side of the connection).
> 
> Joe Pluta
> http://www.zappie.net/java
> "Where the AS/400 speaks Java with an RPG accent"
> Home of PBD1.2P, the FREE Java/400 Client/Server Toolkit
> 
> 
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