Re: RPG UDDS Generic File Display/Update (Null fields in program described files)

Hi, Bruce:

I seem to recall that your CLF product used the _ROpen, _RRead, _RWrite, _RUpdate, _RClose, etc. APIs, and not "program described" files in the RPG sense of the word?
All the best,
Mark S. Waterbury


On Friday, December 7, 2018, 6:09:54 PM EST, Bruce Vining <bruce.vining@xxxxxxxxx> wrote:

No promises, but I know my CLF product of years ago supported NULL fields
even though using run-time program described files. I'll try to figure out
how I did that way back when...

On Fri, Dec 7, 2018 at 4:19 PM Buck Calabro <kc2hiz@xxxxxxxxx> wrote:

On 12/7/2018 5:06 PM, Frank Kolmann wrote:

Looks like my utility will never work on NULL capable fields.

--  snip from the RPG Manual ---
Database Null Value Support
Note: For a program-described file, a null value in the record always
causes a data
mapping error, regardless of the value specified on the ALWNULL keyword.
---- end snip  ----

Perhaps I can read the mapping error *DIAG messages and infer that the
columns are NULL. The question is whether the rest of the columns will
get populated or not. Time is so dear right now...

--
  --buck

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