Date Published: September 17, 2024
I’ve developed an RPGLE /free service program that enables seamless execution of any CL command by passing the command string as a parameter. The program returns a boolean response—true for successful execution and false in case of failure.
Additionally, the service program incorporates a flexible error-handling feature driven by a data area. The data area is 11 characters long, where the first character ('Y' for yes, 'N' for no) controls whether errors are displayed. If set to 'Y', errors are directed to the user running the application. If a user ID is provided in the remaining 10 characters, only that specific user will receive the error messages.
This design ensures adaptability. If no user ID is specified and the first character is set to 'Y', all users executing the program will receive the error message. For cases where this functionality is unnecessary, it can be easily disabled by commenting out the relevant code in the application.
With this approach, the program provides both robust command execution and customizable error messaging, making it an invaluable tool for any RPGLE application development.
Note: This service program leverages previously developed modules, including the "Get Caller Program Name" and "Object Exists" functions.
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How to Use the JSCLCMD Service Program
1. Source Code Placement
Ensure the following setup:
- The source code QPROTOSRC/JSCLCMD must be placed in the QPROTOSRC source member.
- The source code QRPGLESRC/JSCLCMD must be placed in the QRPGLESRC source member.
- Both source members should reside within the same library.
2. Purpose
The QPROTOSRC/JSCLCMD member is used within QRPGLESRC to copy the necessary
declarations and parameters for the application to function as a service program. This is achieved by binding
the /copy directive during the compilation process.
Additionally, the QPROTOSRC/JSCLCMD source code is utilized by RPG applications that require
this service program.
3. Compilation Instructions
Step 1: Create the Module
CRTRPGMOD MODULE(*CURLIB/JSCLCMD) SRCFILE(*CURLIB/QRPGLESRC) SRCMBR(JSCLCMD) DBGVIEW(*SOURCE) REPLACE(*YES)
Step 2: Create the Service Program
CRTSRVPGM SRVPGM(*CURLIB/JSCLCMD) EXPORT(*ALL) ACTGRP(*CALLER) OPTION(*DUPPROC)
Note: The *CURLIB is used as the default library in this example. You may specify any
library where you want the objects to be stored.
4. Binding Directory
Once the service program is created, it should be added to a binding directory. For example, I use JASTOOL as my binding directory. You can use any binding directory that suits your needs.
ADDBNDDIRE BNDDIR(*CURLIB/JASTOOL) OBJ((JSCLCMD))
Use Case
To call the cl_cmd see below example: