I really have no issues about the LVLCHK(*NO) as I'm fully aware of it being set to no and that it has its own purpose in the scheme of things.
I am just curious to know why the program/display did what they did. I may have encountered this before but I guess I didn't pay attention to it or just corrected the installation/deployment and never really asked why it happened, until now. Your explanation clears up that one for me. Thanks Marvin.
-----Original Message-----
From: RPG400-L [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Marvin Radding
Sent: Tuesday, June 02, 2015 1:08 AM
To: 'rpg400-l@xxxxxxxxxxxx'
Subject: Display file field
Eduardo,
Your display file was compiled with LVLCHK(*NO) otherwise the program would not have work because the difference between the size of the field in the program and the display file would have generated a CPF4131 error. Under the circumstances you describe this is the behavior when there is a disagreement between the program and the display file. What you need to understand is that the program prepares the display record with only the data that is needed, in this case the field you described and the others following it. When the program sends the buffer to the screen manager, it extracts the data in the display record according to the field descriptions in the display file. This is the reason why the field was not truncated. The extra character was extracted as part of the next field as you indicated in your description of the problem. The only work around that I am aware of is revert back to the previous program that has the same display file description. Otherwise promote the new display file ASAP.
Thanks,
Marvin
message: 2
date: Mon, 1 Jun 2015 08:35:18 +0000
from: "Fajardo, Eduardo" <eduardo.fajardo@xxxxxxxxx>
subject: Display file field
Hi,
I have a program and a display file. A screen field, say CCCCCCC, is defined in the display header format as 7char. The same field is defined in the program DS as 7char, initialized to a certain value.
I am working on a project which aims to increase the length of field C from 7 to 8 so I changed and recompiled the program as well as the display file. I forgot to deploy the display file and went on to test the new changes which means I am now using the latest program(8char fieldC) over an old display file (7char fieldC). Initially, I assumed it will just drop/truncate the last character. I was wrong. The last character of field C was placed in the next field and the rest of the fields in the screen format moved a character to the right as seen below.
I know it is best practice to deploy both but given this instance, I'd like to know if this is the correct behavior. If so, are there workarounds aside from deploying the latest display file?
Before
FldA FldB FldC FldD FldE
PGMNM ENQ XXXXXXX TITLE CCYYMMDD <-- Data value
After
FldA FldB FldC FldD FldE
PGMNM ENQ XXXXXXX XTITL ECCYYMMD <-- Data value
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