RE: Resequence data in file based on screen seq

If you are going to delete make sure you reorg the file every now and
then. What I would do is something like this pseudo code:

Read from file into subfile.
Read entire subfile into and array.
Sort Array by new seq#.
Read file by seq#.
If file exists update from array (seq 10 = 1st array, seq 20 = second
array, etc regardless of new seq# in array)
If you have extra array records write them out as new file records.
If you have extra file records, delete them.

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx

[mailto:rpg400-l-bounces@xxxxxxxxxxxx]

On Behalf Of Jeff Young
Sent: Friday, December 07, 2007 9:05 AM
To: RPG programming on the AS400 / iSeries
Subject: Re: Resequence data in file based on screen seq

The reason I do not just update is that after the user enters all

their

data, when writting back to the file, I need to sequence the data in
increments of 10 so that they can move things around without having to
change all records.

Thanks,


Jeff Young
Sr. Programmer Analyst
IBM -e(logo) server Certified Systems Exper - iSeries Technical

Solutions

V5R2
IBM Certified Specialist- e(logo) server i5Series Technical Solutions
Designer V5R3
IBM Certified Specialist- e(logo)server i5Series Technical Solutions
Implementer V5R3









----- Original Message ----
From: Joep Beckeringh <joep@xxxxxxxxxxxxxxxxxxx>
To: RPG programming on the AS400 / iSeries <rpg400-l@xxxxxxxxxxxx>
Sent: Friday, December 7, 2007 9:02:22 AM
Subject: Re: Resequence data in file based on screen seq

Jeff,

Why do you delete all the records of the group? Why don't you just

update?

What I do in situations like is to store the original sequence # as a
hidden field in the subfile. With the original and new sequence # you
can determine what to do:
- original = 0 and new > 0: add
- original > 0 and new = 0: delete
- original <> new: update

The tricky bit is checking for duplicates. You need to check each
new/changed sequence # with the file and also check for duplicates
within the subfile.

Joep Beckeringh


Jeff Young schreef:

Let me clarify what I am attempting to do.
I have a file with the key: Company, Location, Item, Seq#,

Substitute

Item.

The file has additional fields.
The user sees all substitute items for the Company, Location, Item

and

can change the Sequence # and other data shown.

Since the user can change the sequence #, I need to process all

records

for the group.

When I do the update/add, I need to resequence the data on file

based on

the seq# the user keyed.

This is similar to what is done in SEU when you insert or delete

lines.

What I am doing now is storing the screen seq# & substitute item in

an

array, sorting the array and then deleting all records for the group.

When I output the records from the subfile, I assign a sequence #

based

on the location of the seq#/item in the array.

I was hoping for a less messy method to get the same result.

Thanks,

Jeff Young
Sr. Programmer Analyst
IBM -e(logo) server Certified Systems Exper - iSeries Technical

Solutions V5R2

IBM Certified Specialist- e(logo) server i5Series Technical

Solutions

Designer V5R3

IBM Certified Specialist- e(logo)server i5Series Technical

Solutions

Implementer V5R3

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