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Abstract
WebSphere Liberty Java Batch is IBM's cross-platform offering that implements the JSR-352 open standard as well as providing enhanced operational functions around the open standard. The material provided here is what was used in the past for a hands-on "ZJBATCH" workshop. This workshop is no longer offered.
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Overview of the Workshop Design
Java Batch is a topic where the audience for a workshop consists of two types of people -- (1) Java developers who are interested in understanding the programming considerations; and (2) runtime operations and support people who would be responsible for creating and maintaining the Java batch environment. This workshop is generally aimed at the second group -- runtime operations and support -- though we do have a unit on JSR-352 concepts.
For more on IBM's Java Batch offering in general, see:
Unit 1 -- Introduction and Overview
It's important to start a workshop with a level-setting unit where we can establish a baseline of understanding and get everyone on "the same page" regarding concepts and terminology. This first unit is designed to do that in a relatively short period of time.
Unit 1 - Introduction and Overview - CHARTS.pdf
Unit 1 - Introduction and Overview - NOTES.pdf
Unit 2 -- Liberty, Server Creation and Setup
WebSphere Liberty Java Batch is a function provided with IBM Liberty, a Java runtime server. To understand how the JSR-352 function operates within this runtime environment, we must first establish what Liberty is and how it works. Then we cover the basics of setting up the Java Batch environment to perform the "initial verification test" (IVT) of the Java Batch environment.
Unit 2 - Liberty, Server Creation and Setup - CHARTS.pdf
Unit 2 - Liberty, Server Creation and Setup - NOTES.pdf
Unit 3 -- JSR-352 Concepts
To this point in the workshop we've only briefly touched on what "JSR-352" really is. In this unit we take a closer look at the Java Batch standard. We touch lightly on the programming elements of the standard, and then we take a look at how a job flow is composed using the IBM WebSphere Development Tool (WDT) plugin to Eclipse. The output of this tool is the "Job Specification Language" (JSL) file, which is what the Java Batch environment uses to understand and run the Java Batch job.
Unit 3 - JSR-352 Concepts - CHARTS.pdf
Unit 3 - JSR-352 Concepts - NOTES.pdf
Unit 4 -- Job Submission and Control
The JSR-352 standard has information on the job submission programming interface (the "JobOperator"), but that's all. It does not define how a real operational job submission and control function can or should be provided. This is where IBM has provided operational enhancements to the JSR-352 standard -- without affecting the programming standard itself. In this unit of the workshop we cover what those operational enhancements are and how they work.
Unit 4 - Job Submission and Control - CHARTS.pdf
Unit 4 - Job Submission and Control - NOTES.pdf
Unit 5 -- Multi-JVM Configuration
A key operational enhancement IBM provides is the ability to separate the job submission function from the job execution function and run them in separate JVM environments. This provides a considerable degree of flexibility in terms of topology design and controlling where jobs get executed. In this unit we cover how this multi-JVM configuration works and how to use it.
Unit 5 - Multi-JVM Configuration - CHARTS.pdf
Unit 5 - Multi-JVM Configuration - NOTES.pdf
Unit 6 -- Security
To this point in the workshop we did our best to hide the security details from you, either by using "basic" security in Liberty, or by providing a canned job to set up the security profiles required. In this unit we dig deeper into the topic of security and provide an understanding of how to more properly secure the environment.
Unit 6 - Java Batch Security - CHARTS.pdf
Unit 6 - Java Batch Security - NOTES.pdf
Lab Instructions and Command File
The lab instructions for this workshop is attached here. In addition, the commands to be entered are provided in a text file. This was done to minimize typing.
Lab Artifacts Document
The labs for this workshop rely on a number of pre-built JCL jobs and pre-configured server.xml files. The following document details the artifacts used in these labs.
Sample Applications Used in Labs
The ZIP file below contains the sample applications used in the lab exercises. The application WAR files contain the Java source.
Disclaimer: these applications are offered "as is" without any warranty, implied or expressed. They are intended as samples only.
Document Location
Worldwide
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Document Information
Modified date:
03 May 2021
UID
PRS5365