RE: Open Explicit -vs- Open Implicit

Rory,

Thanks. That makes perfect sense. Though it begs the question: Why is
there even a MONITOR code for implicit opens? .-)

Jerry C. Adams
IBM i Programmer/Analyst
It just as easily could have gone the other way. - Don Zimmer explaining his
teams 4-4 road record
--
A&K Wholesale
Murfreesboro, TN
615-867-5070


-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx]
On Behalf Of Rory Hewitt
Sent: Tuesday, March 20, 2012 2:30 PM
To: RPG programming on the IBM i / System i
Subject: Re: Open Explicit -vs- Open Implicit

Jerry,

It's whether you use the OPEN op-code (explicit open) or whether the program
opens the file automatically (implicit open). By coding the OPEN statement
you *are* explicitly opening the file.

So basically, there's no point in doing a MONITOR for 1216, since an
implicit file open is performed when the program is initialized, before any
user code gets executed.

Rory

On Tue, Mar 20, 2012 at 12:05 PM, Jerry C. Adams <midrange@xxxxxxxx> wrote:

I usually open files manually in RPG IV, and my habit is to wrap the
OPEN in a MONITOR group (though, naturally, I never expect an error)
and test On-Error for 1216 and 1217; Implicit Open Failed and Explicit
Open Failed, respectively.



I know the different between implicit and explicit, but what is the
difference in RPG? Does it have to do with whether or not the
EXTFILE( ) keyword is used on the File statement? Just got curious
and couldn't find it in the manual.



Jerry C. Adams

IBM i Programmer/Analyst

Eric Snow will be 0 for 10 if that pop fly comes down. - Jerry
Coleman, San Diego Padres announcer

--

A&K Wholesale

Murfreesboro, TN

615-867-5070



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Rory Hewitt

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