Thanks for the reply, Rony.
I've been reading about the ::REQUIRES and ::ROUTINE directives in the doc
but so far haven't hit on the correct coding to get them working properly.
These directives/concepts don't exist in mainframe REXX so they're new to
me.
Is there a simple example I can look at that would reveal the proper coding
structure?
Also, thanks for the tip on the logging framework.
Thanks again,
Robert
-----Original Message-----
From: Rony G. Flatscher [mailto:rony.flatsc...@wu-wien.ac.at]
Sent: Sunday, January 25, 2009 2:15 PM
To: Open Object Rexx Developer Mailing List
Subject: Re: [Oorexx-devel] Question about calling an external routine
rob...@garrettfamily.us wrote:
(Apologies in advance if I've sent this to an inappropriate list)
Is it possible to pass an instance of an object from an externally
called routine back to the parent routine? If so, how?
Example:
Assume two separate REXX routines (separate files): MAIN.rex and
LOGGER.rex.
I'd like to be able to, from MAIN, call LOGGER (passing it a file name),
and have LOGGER create an instance of a stream object, open the file, and
then pass the stream object back to MAIN at which point MAIN would be able
to use the stream object to write to the file (or perhaps pass it to other
external routines that would also be able to use it).
I'm already doing this with LOGGER being a routine that is part of MAIN
(both located in the same file), but I want to be able to break LOGGER out
into a separate file.
Is this possible?
Sure. Break out the routines add the keyword "PUBLIC" to each routine in
LOGGER.rex. Then, before using the public routines which now reside in
LOGGER.rex you need to "CALL LOGGER", which will cause its public routines
(and public classes) to become visible. 'Thereafter you can access all those
routines as if they were defined in MAIN.rex.
I've been writing and using REXX for many years in the mainframe
environment so I'm quite familiar with the core language, but the facilities
of ooREXX are still somewhat new to me.
If you are developing a logging facility for Rexx you might want to learn
about an ooRexx implementation of the log-framework that originates from the
Java world. Here's an article to that ooRexx framework, demonstrating how to
use it:
<http://wi.wu-wien.ac.at/rgf/rexx/orx18/log4r/2007_orx18_log4rexx-20070517-a
rticle.pdf>. The ooRexx code of the "log4rexx" framework can be downloaded
from: <http://wi.wu-wien.ac.at/rgf/rexx/orx18/log4r/log4rexx_20070521.zip>,
in case it is of interest for you.
HTH,
---rony
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