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Alan, Yes! It worked as follows:

Session 1: STRDBG UPDPROD(*YES) SRVPGM(QGPL/XVIDAT) and set a "SBREAK line# USER UserProfileName" at the first statement of the IDAT_Packed procedure.

Session 2: STRSQL and run the UDF. In this example: select iDate(1140201) from someFile

Session 1: The CPI1903 message appears with the qualified job name that the service job needs to be started for.

Session 3: STRSRVJOB JOB(qualified name from the above CPI1903 message). STRDBG UPDPROD(*YES) SRVPGM(QGPL/XVIDAT) and set a BREAK at the same first line of the IDAT_Packed procedure.

Session 1: Respond to the CPI1903 message by pressing Enter.

Session 3: Now it breaks on the first line of IDAT_Packed.


Alan, In response to your prior email, I changed the DLTPGM to DLTSRVPGM, but the above worked in either case. Yes, we did qualify the service program name QGPL/XVIDAT in the CREATE FUNCTION commands.

You were correct about the procedure being deterministic. If I use the same date, it does not break, but if I use a different date, it will break. I even signed off all three sessions and went through the whole process again, and it still "remembered" not only the last date used, but about a dozen or so I used before it. Even when I ran the SQL as "select iDate(dateFld) from fileWithDateFld" where the file has many different dates it will only break when I roll to a date it has not processed yet. Weird.

Is there any way to prevent this memorization from happening? We all like to debug the same value multiple times when looking for an issue.

Many thanks to all who contributed. Not completely there yet, but getting close.

Walter

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Alan Campin
Sent: Friday, February 28, 2014 6:52 PM
To: RPG programming on the IBM i (AS/400 and iSeries)
Subject: Re: Debugging a UDF on V6.1

Walter, I figured it out. The procedure is deterministic which means that if you run the query multiple times with the same value it does not call the service program again. It just returns what it already has so what has been happening is that we ran it for a given date and we keep testing with that date and since it is the same date it never calls the service program.

We need to set the SBREAK <Line Number> USER <Your User Profile> and then switch to another session and run the SQL with a new date value and it will break. It seems to remember that that date was run before even if you end the job and start a new one.

Also, a couple of other things. The CRTIDAT has a bug. I should say DLTSRVPGM pgm, not DLTPGM.

Also, in the XVIDAT_SQL member did you it edit the source member to indicate the procedure is in QGPL rather than the default of IDATE. Since it is running, I would guess yes.


On Fri, Feb 28, 2014 at 3:58 PM, Alan Campin <alan0307d@xxxxxxxxx> wrote:

Walter, I just don't know what to make of this. I have installed iDate
on my system and did what I always do and it will not recognize it in
debug. I tried using my user id and QUSER but nothing works. The
really weird one is that I put fatal error in to cause it to crashes
and nothing. It is like it not executing the service program.

I, also, went into RDI and set a service break point there and nothing

The best thing is to open a ticket with IBM. Something must have
changed in V6R1M0 in how IBM is running the jobs. Very bizarre.


On Fri, Feb 28, 2014 at 1:16 PM, Walter Bellisio <wbellisio@xxxxxxxxxxx>wrote:

Hi Peter,

These are the results ...

SLIB SNAME RLIB RNAME
EXTERNAL_NAME
QGPL IDATE QGPL IDATE
QGPL/XVIDAT(IDAT_PACKED_DEFAULT)
QGPL IDATE00001 QGPL IDATE
QGPL/XVIDAT(IDAT_CHARACTER_DEFAULT)
QGPL IDATE00002 QGPL IDATE
QGPL/XVIDAT(IDAT_INTEGER_DEFAULT)
QGPL IDATE00003 QGPL IDATE
QGPL/XVIDAT(IDAT_DATE_DEFAULT)
QGPL IDATE00004 QGPL IDATE
QGPL/XVIDAT(IDAT_PACKED)
QGPL IDATE00005 QGPL IDATE
QGPL/XVIDAT(IDAT_CHARACTER)
QGPL IDATE00006 QGPL IDATE
QGPL/XVIDAT(IDAT_INTEGER)
QGPL IDATE00007 QGPL IDATE
QGPL/XVIDAT(IDAT_DATE)


Walter


-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx]
On Behalf Of Peter Dow
Sent: Friday, February 28, 2014 3:05 PM
To: rpg400-l@xxxxxxxxxxxx
Subject: Re: Debugging a UDF on V6.1

Hi Walter,

A little more information might help:

STRSQL

select substr(SPECIFIC_SCHEMA,1,20) slib,
substr(SPECIFIC_NAME,1,20) sname,
substr(ROUTINE_SCHEMA,1,20) rlib,
substr(ROUTINE_NAME,1,20) rname,
EXTERNAL_NAME
from QSYS2/SYSFUNCS
where lower(ROUTINE_NAME) = 'idate'

Or just leave off the WHERE clause and take a look at all the
functions on your system. If you see idate in there, and the
EXTERNAL_NAME is correct, expand the SELECT to show all fields, i.e.
SELECT * FROM QSYS2/SYSFUNCS and look at some of the other
information, like the PARAMETER_STYLE and so on to make sure it
matches what you expect; or what Alan says it should show.

--
*Peter Dow* /
Dow Software Services, Inc.
909 793-9050
petercdow@xxxxxxxxx <mailto:petercdow@xxxxxxxxx> pdow@xxxxxxxxxxxxxx<mailto:
pdow@xxxxxxxxxxxxxx>

/
On 2/28/2014 11:44 AM, Walter Bellisio wrote:
Alan, No others, just the one in QGPL. Also, thank you for the
walk
through. I wish we had an answer.

Walter Bellisio
Sales and Distribution Developer
(631) 951 - 5375

Bimbo Bakeries USA
55 Paradise Lane
Bay Shore, NY 11706



-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Alan Campin
Sent: Friday, February 28, 2014 2:42 PM
To: RPG programming on the IBM i (AS/400 and iSeries)
Subject: Re: Debugging a UDF on V6.1

Walter, try doing s WRKOBJ OBJ(*ALLUSR/XVIDAT) OBJTYPE(*SRVPGM)

See if there are multiple copies of XVIDAT around.


On Fri, Feb 28, 2014 at 11:55 AM, Alan Campin <alan0307d@xxxxxxxxx>
wrote:

Walter, give me a call and I will walk you through it.
801-505-2707


On Fri, Feb 28, 2014 at 11:49 AM, Walter Bellisio <
wbellisio@xxxxxxxxxxx>wrote:

Hi Vernon,

We're on V6.1. I'm attempting to debug the iDate UDF that Alan
Campin has so kindly shared. I'm just running a simple select
statement from a STRSQL. I've attempted these two scenarios:

I've tried it with BREAK as follows:

- Session 1: STRSRVJOB JOB(123456/MYUSERID/SESSION2)
- Session 1: STRDBG UPDPROD(*YES) SRVPGM(QGPL/XVIDAT)
- Session 1: BREAK on the first statement of each procedure in
both modules XVIDAT_M01 and XVIDAT_M02.
- Session 2: STRSQL
- Session 2: select idate(someDateField) from someTable

Dates are shown edited, but none of the breakpoints occur.


I also tried it with SBREAK as Alan had suggested as follows and
also no
luck:

- Session 1: STRDBG UPDPROD(*YES) SRVPGM(QGPL/XVIDAT)
- Session 1: "sbreak LINE# user MYUSERID" on the first statement
of each procedure in both modules XVIDAT_M01 and XVIDAT_M02.
- Session 2: STRSQL
- Session 2: select idate(someDateField) from someTable

Alan states: " It will break on your previous statement and tell
you the STRSRVJOB command to use on another session. Then issue
STRDBG in that session."

It did not break. I also tried substituting sbreak LINE# user
MYUSERID in the first scenario, and no luck.

Walter


-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx]
On Behalf Of Vernon Hamberg
Sent: Thursday, February 27, 2014 7:22 PM
To: RPG programming on the IBM i (AS/400 and iSeries)
Subject: Re: Debugging a UDF on V6.1

Walter - if you're willing, tell us just what steps you took?
What release of the OS are you on? SBREAK would get you what you
want, but it is a relatively recent thing - v5r3 or v5r4.

If you used SBREAK, you have to set the user you want - that is
often QUSER for server jobs - so which user did you specify?

I forget now about UDFs, but I think SQL could be doing things in
a server job, not your own - again, you'd have a hard time
figuring which job to debug unless you can use SBREAK.

Hope to help!
Vern

On 2/27/2014 3:01 PM, Walter Bellisio wrote:
Thanks for all of your responses. Still can't get a breakpoint
to come
up. I know the function is working because it is converting the
dates as described. In response to Peter, the service program
only exists in QGPL, and the CREATE FUNCTION qualifies the
service program. Was there a PTF that may have been needed?
Walter



-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Alan Campin
Sent: Thursday, February 27, 2014 1:56 PM
To: RPG programming on the IBM i (AS/400 and iSeries)
Subject: Re: Debugging a UDF on V6.1

I should clarify that more. In one session just do a STRDBG and
then
issue a SBREAK for the line you want to break and your user id.
Then in another session, run your SQL. It will break on your
previous statement and tell you the STRSRVJOB command to use on
another session. Then issue STRDBG in that session.

On Thu, Feb 27, 2014 at 11:46 AM, Walter Bellisio <
wbellisio@xxxxxxxxxxx>wrote:
I'm attempting to debug a User Defined Function that uses a
service program to do the work on a V6.1 release. This is the
iDate source downloaded from A. Campin, with the modules,
service program and functions created properly. STRSRVJOB and
STRDBG are done on one session, and a simple STRSQL with a
select statement that uses the UDF is done on the other session
that the STRSRVJOB points to. A break point was set on the
first statement of every procedure in both modules and I can't
get a module to stop at any
of the break points.
The RPGLE modules of the service program were also compiled
with
DBGVIEW(*ALL) and that did not work as well. Has anyone
encountered a
similar problem?
Walter
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