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Why is a very simple CL with CPYF a poor choice? It will do the job WITHOUT naming fields, and could be used on ANY file conversion - as opposed to SQL, which would need specific fields named and is NOT reusable for other files??

Step1:
To copy data with ONLY field name changes (no new fields, no field length changes:
CPYF *nochk from SOURCELIB to QTEMP version of file with field name changes


Step2:
CPYF *MAP *DROP from QTEMP to TARGETLIB version of file with field name changes AND new fields inserted.


Please explain why this simple, reusable method would be a poor choice??





-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Charles Wilt
Sent: Thursday, April 05, 2012 8:37 AM
To: Midrange Systems Technical Discussion
Subject: Re: we are using Aldon Lifecycle Manager for System i - how to create a file conversion pgm

CL is a poor choice for your needs...

Looking at the example (ACMSUSER/USEREXIT(DATACNV)

DCL &OBJNAME *CHAR 10
DCL &OBJLIB *CHAR 10
DCL &SAVNAME *CHAR 10
DCL &SAVLIB *CHAR 10

&OBJLIB/&OBJNAME is the new version of your file without data.
&SAVLIB/&SAVNAME is the old version of your file with your data.

You can use the INSERT part of chuck's SQL example, but you'll have to
create the statement dynamically and run it using PREPARE and EXECUTE
or just EXECUTE IMMEDIATE.

wSQLstmt = 'insert into ' + %trim(objlib) + '/' + %trim(objname)
+ '(fld1, newfld2, fld5)
+ ' select fld1, fld2, fld3 '
+ ' from ' + %trim(savlib) + '/' + %trim(savname)


HTH,
Charles

On Wed, Apr 4, 2012 at 5:51 PM, Stone, Joel <Joel.Stone@xxxxxxxxxx> wrote:
Im trying to write a CL routine to promote a file with fields renamed AND several fields added into the middle of the record format.


I am looking for an example data conversion program.  If you have one you could share to get me started, that would be great!


1)      CPYF *nochk to copy the data
2)      CPYF *map to move the data into the proper fields


Do I use *LIBL for the "from" lib?

Do I use &OBJLIB for the "target" lib?


They provide a sample CL with parms only, not much regarding what they contain.

Thanks



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