IBC233 Lecture 2

Updated Summer 2007

Agenda

• Real Estate Issues• Review• System Values• What’s ODIN doing? • Library List• Websphere

– Filters– Writing a CL program

Real Estate Issues

• Section B – Friday’s lab is moved to T4042

• Section A – Thursday’s lab is full– Please arrive early with your

student card and proof that you are in the section

Review

• Where will you find course notes?

• Where will you find schedules, labs and assignments?

• What is Client Access?

• Where do you get software for free?

• Who is PROFPLUTO?

• What does CL stand for?

System Values vs User Profile

• System Values configures ODIN for everyone.

• User Profile customizes ODIN’s configuration for an individual

What’s ODIN Doing?

• WoRK with ACTive JOBs

• System vs Subsystem

• Effects of an infinite loop

How the iSeries finds Objects

• When an object is created, it is created ‘in’ a particular library.

• To access an object, the iSeries needs to know what library the object is in.

• (CL) Commands prompt you for the object name and library name.

• *LIBL is the default for library

Library Lists

• The list of Libraries through which the iSeries searches to find objects.

• Similar to the DOS ‘Path’ concept

• Each Job has a library list

• *LIBL = library list

Library Lists cont’d

• A Library List consists of 4 parts:– System Libraries (up to 15)– Product Libraries (none, 1 or 2)– Current Library(1 only)– User Library ( up to 25)

• To view your library list - DSPLIBL

How do Libraries get on your Library List?

• When you sign on, your library list is built from:– QSYSLIBL (system value)– QUSRLIBL (system value)– Current library from User Profile

• Product libraries are added as needed by the system

Storing Objects

• When an object is created, it is stored in the library specified.

• If no library is specified, it is stored in *CURLIB (current library).

• If there is no current library, it is stored in QGPL library.

• Exception: Library Descriptions, Device Descriptions and User Profiles are always stored in library QSYS.

What is CL?

• What does CL stand for?

• What is the IBM defined acronym?

Steps to Writing a CL Program

Writing a program

CL Compiler

Source Code

QCLLESRC*FILE

(PGM1)

CompiledListing(PGM1)

PGM1*PGM

*OUTQWRKSPLF

Successfully Completed

*MSGQDSPMSG

Some CL Commands

Program Development Manager

WRKLIBPDM

WRKOBJPDM

WRKMBRPDM

12 beside a library

12 beside a source file

Default is a listof libraries on the library list

Default is a listof objects from thelast library that you looked at

Default is a listof source members(program code) thatyou last looked at

CL Commands

• RTVJOBA – ReTrieVe JOB Attributes– Retrieves information about the environment

• RTVUSRPRF – ReTrieVe USeR PRoFile– Retrieves information about the User profile that started

the job

• SNDPGMMSG– Sends a message to the bottom of the screen

• DCL – DeCLare• CHGVAR – CHanGe a VARiable

ConCATenate Strings

FLDA = ‘Cindy ‘ FLDB = ‘Laurin ‘• *CAT

– Combines the strings, as they are– FLDA *CAT FLDB?

• *BCAT– Combines the strings by stripping the trailing spaces off the left

string and replacing it with 1 character– FLDA *BCAT FLDB?

• *TCAT– Combines the string by stripping the trailing spaces off the left

string.– FLDA *TCAT FLDB?

Websphere

IBM WebSphere Developer Studio Client for System i 6.x (WDSC)

• Based on Eclipse Technology

• part of IBM’s suite of products designed to enhance programmer’s productivity

• PC version of PDM

WebSphere Demo

WebSphere - Seneca

• Implementation issues

• workspace stored in /temp folder

Homework?