System i (AS/400, iSeries, i5) Advanced RPGIV Programming and ILE

Course Details:

Course code: ISR4A View/Download data sheet (PDF)
Duration: 4 Days Book Course
Price: £1,495 Return to Courses

Course Outline:

Review of RPGIV Keywords, Operation Codes & Built In Functions
Free format Control, File and Definition statements
Using Date & Time Variables and Functions
Using Null Capable fields
Compile Time and Run Time arrays
Data Structures (Basic, Multiple Occurrence & Multi-dimensional)
Data Areas
Pointers & Dynamic Storage
Introduction to teraspace storage model
Commitment Control & Journalling Concepts
Sub-procedures
Local & Global Variables & Procedures (Export)
ILE Concepts
Debug Considerations & Encryption
Module & Service Program Creation & Management
Binding Directories & Binder Source
Activation Group Considerations

Pre-requisites: A basic understanding of RPG programming techniques as covered in the RPG4 Programming course (ISR4P).

Course content:

RPGIV review and Update

  • Be aware of all RPGIV operation codes
  • Understand the commonly used built in functions
  • Be clear on the course objectives & pre-requisites
  • Be able to code Free form Control statements CTL-
  • Be aware of all Free form definition statements DCL-
          Files, Variables, Procedures

Date & Time variables plus null capable fields

  • Define initialise and use variable types:
            Date, time, timestamp
  • Convert non-date variables to date variables:
            %DATE , %TIME,  %TIMESTAMP
  • Manipulate data in true date variables:
             %DAYS, %MONTHS, %YEARS, %DIFF, %SUBDT
             (%HOURS, %MINUTES, %SECONDS, %MSECONDS)
  • Validate the content of a date variable (TEST)
  • Convert true date variables to non-date variables:
             %CHAR, %DEC
  • Define & Use null capable fields:
             ALWNULL, %NULLIND

Arrays

  • Declare and use an Array
  • Differentiate between compile & run time arrays
  • Provide compile time data
  • Use the repeat operation code FOR
  • Understand the legacy code DO
  • Understand how to use the array BIFs:
             %XFOOT, %LOOKUPxx, %SUBARR
  • Be aware of legacy op codes: XFOOT, LOKUP
  • Sort array content: SORTA

Data Structures

  • Define and use a data structure
  • Recognise different types and uses of data structures
  • Hard code the sub structure of a data structure
  • Understand how file information data structures can be used in report programming
  • Redefine the sub-structure – OVERLAY
  • Duplicate structures with QUALIFIED
  • Initialise data structure and sub-structure
  • Code and use a program status data structure
  • Code and use a file information data structure
  • Code free format data structure statements

External and Multiple Definitions

  • Retrieve a sub-structure from an external file EXTNAME
  • Using other structures: LIKEREC, LIKEDS, QUALIFIED
  • Rename sub-structure fields EXTFLD, PREFIX
  • Use long fields names from external definition ALIAS
  • Code and use a multiple occurrence data structure
  • Overlay arrays within a data structure
  • Use array BIFs %ELEM, %SIZE, %OCCUR
  • Understand and replace MOVEA legacy op code
  • Sort linked arrays
  • Read multi-dimensional arrays & Complex Data structures
  • Sort and Search techniques of Data Structure Arrays

Data Areas

  • Define and use a data area
  • Describe and use the LDA
  • Understand and use the operation codes:
             IN, OUT, UNLOCK
  • Link Data areas to Data Structures
  • Use and declare a user controlled data area
  • Free format Data Area Definition Statements
  • Soft Code Data Areas

Pointers and Dynamic Storage

  • Define and use a pointer variable
  • Define storage space at run-time (based)
  • Use Dynamic  Storage
  • Understand and use Dynamic storage commands:
             %ADDR, %ALLOC, %REALLOC & DEALLOC
  • Declare Variable length & Null terminated strings

Commitment Control

  • Understand commitment control requirements
  • Understand how Commitment Control works
  • Understand when to use commitment control
  • Maintain files under commitment control
  • Include commitment control into RPG program
  • Use a MONITOR error trap

Sub-procedures and Optional Parameters

  • Code a Sub-procedure
  • Understand local & global variables
  • Understand the need for and code a prototype
  • Use the operation code  CALLP
  • Alternative parameter passing methods:
            By reference, Read-only Reference, Value
  • Define and use optional parameters:
            *OMIT, *NOPASS, %PARMS
  • Default Activation Group considerations
  • Faster Return Values %PARMNUM, RTNPARM
  • Code a reusable sub-procedure

ILE Concepts and Introduction

  • ILE v OPM
  • Relationship between program and module objects
  • Dynamic call v Static call
  • ILE program and module object information – DSPPGM, DSPMOD
  • Convert CLP to CLLE & modules. CL procedure Call – CALLPRC
  • Binding CL and RPG together into a single program
  • Update ILE program objects
  • Include copyright into module objects
  • Application isolation with Activation groups
  • Controlling which activation group is used
  • Reclaim resources for an activation group
  • Bindable APIs

RPG Modules

  • Bind RPG modules into programs
  • Make source code available for interactive debug
  • Define active PEP
  • Understand export / import concepts
  • Using export on sub-procedure definitions
  • Define and use NOMAIN modules
  • Code Cycle-Main and Linear-Main procedures
  • Teraspace storage model v Single-level storage model

Service Programs & Binding Directories

  • Bind by copy v Bind by reference
  • Service Program creation and Maintenance
  • Service Program exports and Public Interface
  • Control Service Program Signatures
  • Binder Language and QSRVSRC
  • Public and Private procedures
  • Binding Directory objects
  • Use of Binding Directory to simplify the program creation process

Follow on Courses:

Potentially the Power RPG with SQL course (ISSQE) and the Introduction to Subfile Programming (ISRPS) course. Also consider the Rational Developer for i course (ISRDI).

Schedule:       

  2017       2018              
Public schedule Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug
Northampton 25            5   14      
We can run this course at our location or on your site – Please contact us for details

 

Schedule:

2017 / 2018
 
Sep 25
Oct  
Nov  
Dec  
Jan  
Feb  
Mar  5
Apr  
May 14
Jun  
Jul  
Aug  
We can run this course at our location or on your site – Please contact us for details

 

Book course:

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