RE: Wrap an RPG Procedure with an SQL External Procedure

Stored procedures can't deal with the returned value.

1) Remove the returned indicator
2) Wrap the existing procedure in another that gets rid of the returned value
3) Define a User Defined Function (UDF) instead of a Stored Procedure.

HTH,
Charles

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of
RNewton@xxxxxxxxxxxx
Sent: Tuesday, November 27, 2007 11:44 AM
To: 'RPG programming on the AS400 / iSeries'
Subject: Wrap an RPG Procedure with an SQL External Procedure


Hi all,

I am working on a service program that will need to be called
from both SQL
and other RPG bound applications. I have created the SQL
external procedure
to call one of the RPG procedures in the service program like so:

CREATE PROCEDURE LIBRARY.CALLRPGPROC (
IN APARM CHAR(12) )
LANGUAGE RPGLE
SPECIFIC LIBRARY.SRVPGM01
NOT DETERMINISTIC
MODIFIES SQL DATA
CALLED ON NULL INPUT
EXTERNAL NAME 'LIBRARY/SRVPGM(RPGPROCEDURE)'
PARAMETER STYLE SQL ;

The RPG procedure looks like this:

d rpgProcedure...
d pi N
d pr_aparm 12a const


When I run the SQL proc however, I get the following error:
MCH3601 unmonitored by XIG11S600 at statement 0000000445
(pointer not set for location referenced)

Statement 445 of the RPG proc is the return:
000445 return true;

I have searched the archives, google, and IBM docs but have not been
successful in finding information on how to call an RPG
service program's
procedure that returns a value, from within an SQL external
procedure. Has
anyone ever found any mention of this anywhere? Is it
possible, or do I
have to change my service programs to use inout parms rather
than returning
a value just so that I can wrap it with an SQL proc?

Thanks in advance,
Robert Newton
EDPS
Electronic Data Processing Services
Software Engineer
rnewton@xxxxxxxxxxxxxxxxx

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