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Instead of loading all the descriptions into one file, you could always put all these description files in a service program and then just have subprocedures to retrieve the descriptions. Much cleaner that way. No added files to the programs and you can hide all the "messy" code as you called it.

Brian May
IBM i Modernization Specialist
Profound Logic Software
http://www.profoundlogic.com
937-439-7925 Phone
877-224-7768 Toll Free


              


-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Stone, Joel
Sent: Wednesday, July 25, 2012 11:03 AM
To: 'Midrange Systems Technical Discussion'
Subject: code description handling design

I am building an ETL (Extract, Transform, Load) feed to transfer an old Iseries app's data to a web interface system.

The old system uses many codes. Each code has a description in its own file.

Examples:


* state code TX is described in the STATE file as "TEXAS".

* Status code "A" is described in the activity file as "ACTIVE".

There are 30 or so files.

My choices are:


1. Each pgm goes out to read each file to grab the code description


2. I load all the codes and descriptions into ONE file, and use a common routine to grab the code descriptions.


#1:
Pros: each code file is explicitly named in each pgm
Cons: dozens of files will be added to each pgm, messy code


#2:
Pros: No extra files in each pgm, only the main input & output files Each ETL pgm is very similar Coding seems simpler One common routine handles all code descriptions

Cons: Design may be confusing because app files are not named explicity




Is it worth it to load all these unrelated codes and descriptions into one file??

Any suggestions?

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