Re: Can files be opened local to a "subprocedure"?

Ah--that's the gotcha I forgot: files declared in subprocedure must be
program-defined. SQL for sure.

On Fri, Oct 8, 2021 at 5:38 PM James H. H. Lampert via RPG400-L <
rpg400-l@xxxxxxxxxxxxxxxxxx> wrote:

On 10/8/21 5:27 PM, Vern Hamberg wrote:

Now are maybe there issues of maintaining the position where you left
off in one of the files?

Of course there are. The record contents can be thrown out (the
recursion is very close to strict tail-recursion), but the position and
the EOF state can't. That is the whole point of the question, and why
opening it locally to the procedure invocation appears to be the only
way, short of caching the entire contents of the file.

And performance is not an issue. The file to be opened locally has an
absolute maximum of 55 records, and an absolute maximum of 49 records
that would satisfy the key conditions.

So far, in my tests, it appears that (at least at V6), simply moving the
F-spec to procedure level requires me to treat the file as
program-described, and define a structure to receive the record, but
treating externally-described files as program-described is old hat
around here. Apparently scatter-gather doesn't work for files declared
at procedure level?

--
JHHL
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