Re: UC - User Controlled opens

Error trapping is an excellent argument for UC.
You could also do a 'pre-open' in the CL using
opndbf for database files to trap open errors.  I
don't know if this was mentioned but accessing
different members of a multi-membered file is
another reason because you need to do an override
to the member when the file is closed.   Of course
this is just another arument for the anti-member
thread.  ;)


Bill Meecham
EXTOL Inc.
wm@extol.com


>
>There is one good reason to do UC opens in RPG:
Error trapping.  If you
>let RPG do the implicit open and you get an I/O
error (file locked by
>backups, etc.) then the default error handler
will get control even if you
>have an INFSR for the file.  The only way I've
found to trap this sort of
>I/O error is to do a user controlled open.
>
>Buck Calabro
>Commsoft, Albany, NY
>mailto:mcalabro@commsoft.net
>


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