Error using a function

[rob@xxxxxxxxx]

I was trying to use an example out of an enewsletter when I ran into a
problem.  Anyone know how to fix the error?  Below is what I had forwarded
to the author.


I was trying this out, creating a memo for our department, using the
following steps, when I ran into a problem.  Can you follow along?


Often we have issues in which fields must be computed to calculate values.
Examples may include:
   On hand balances
   Special pricing
   Available inventory
   etc.

I found an interesting article at:
http://www.midrangeserver.com/guruO/GuruO-10-19-2001.html#1

Of which I would like to give you a sample involving our data.  I'll start
from the finished product and work our way back.

I've created a view, or a logical file, depending on whatever terminology
floats your boat.  The one I created is DATDIVF/IIMLROB.

I can run a Query/400 on it which basically does this:
Select iprod, OnHand from iimlrob
Now isn't that easier than each query, etc calculating the on hand?  Or
making sure that someone didn't make an error?  Or, if you want to change
all queries, etc as to how they calculate onhand you can do it in one spot.

Now lets start at the beginning.

First I have the following source member, I'll give you the Code/400 name,
<OS400>ROB/QPGMSRC(INVENTORY)
     H nomain

     D OnHand          pr                  like(iadj)
     D  OpenBal                            like(iopb)
     D  Adjustments                        like(iadj)
     D  Receipts                           like(irct)
     D  Issues                             like(iiss)

     P OnHand          B                   export
     D OnHand          pi                  like(iadj)
     D  OpenBal                            like(iopb)
     D  Adjustments                        like(iadj)
     D  Receipts                           like(irct)
     D  Issues                             like(iiss)

     D ItemMast      E DS                  extname(iim)

      /free
       return OpenBal+Adjustments+Receipts-Issues
      /end-free
     P OnHand          B                   export

Then I created a module, not a program, using the command
CRTRPGMOD MODULE(ROB/INVENTORY) SRCFILE(ROB/QPGMSRC) DBGVIEW(*LIST)

Then I created a service program using the command
CRTSRVPGM SRVPGM(ROB/INVENTORY) EXPORT(*ALL)
Normally I would use binder language, but I kept it simple for this example

Then I did the following:

STRSQL

create function OnHand (dec (11,3), dec (11,3), dec (11,3),
                        dec (11,3))
returns dec (11,3)
language rpgle
deterministic
no sql
returns null on null input
no external action allow parallel
simple call
external name 'ROB/INVENTORY(OnHand)'

Now to test this I ran:
Select iprod, OnHand(iopb,iadj,irct,iiss) from iim
And I got:
Message ID . . . . . . :   SQL0204       Severity . . . . . . . :   30
Message type . . . . . :   Diagnostic
Message . . . . :   INVENTORY in ROB type *SRVPGM not found.
Cause . . . . . :   INVENTORY in ROB type *SRVPGM was not found. If this is
an
  ALTER TABLE statement and the type is *N, a constraint was not found. If
  this is not an ALTER TABLE statement and the type is *N, a function,
  procedure, or trigger was not found.
Recovery  . . . :   Change the name and try the request again.  If the
object
  is a node group, ensure that the DB2 Multisystem product is installed on
  your system and create a nodegroup with the CRTNODGRP CL command.

But I can do the following:
wrkobj rob/inventory
and get
Object      Type      Library     Attribute
INVENTORY   *SRVPGM   ROB         RPGLE
INVENTORY   *MODULE   ROB         RPGLE

What gives?

For more information on functions:
http://publib.boulder.ibm.com/html/as400/v5r1/ic2924/info/db2/rbafzmst57.htm#HDRCH2FUNCTION



Rob Berendt

==================
"They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety."
Benjamin Franklin

Rob Berendt

==================
"They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety."
Benjamin Franklin