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>Thanks, Joe. At least now I know.  Actually data queues seem like a
>reasonable alternative.
----------
Actually, data queues can be used pretty profitably, especially if you're
willing to write a batch server.  If you submit the Java program (actually
submitting a call to QSH) and have it wait on a data queue for requests, you'll
only have to suffer through JVM initialization once, and from then on the
systems runs pretty well.

If you download PBD1.2P, there's a package JDQM/400 which consists of Java
classes which wrapper RPG programs which in turn wrapper the data queue APIs.
Why this indirection?  Because it allows RPG and Java to talk to one another in
either direction.  Java clients on the workstation can talk to RPG servers on
the AS/400, or RPG clients on the AS/400 can talk to submitted Java servers on
the AS/400, or any combination in between.  To create a Java server, you simply
subclass the JdqmServer class, put in your own run() method, and you're off to
the races.

There's a fully functional demo program, as well as the appropriate RPG and CL
programs in a library (in a save file).  Go to
http://www.zappie.net/java/techniques/pbd.htm to download it.

Joe Pluta
Moderator


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