UC04 Writing z/OS CGIs in COBOL

Writing z/OS CGIs in COBOL - Topical Outline

General Program Structure and Techniques

General program structure

Redirect using Display

Redirect using printf

Redirect using bpx1wrt

Watching for errors

Deploying your CGI

Computer Exercise: Setting up for labs

Basic Processing

Emitting Headers

Emitting HTML

Accessing environment variables

Displaying environment variables

Stylesheets and CGIs

Computer Exercise: Writing out HTML pages

Handling GET Requests

Some scenarios

Parsing QUERY_STRING content

Decoding QUERY_STRING content

Computer Exercise: Handling incoming data

The Data Connection - Part I: The Story

Working With Data on the Server

The Data Connection - Part II: Working With VSAM Data

Working with VSAM files

Computer Exercise: Working with VSAM data

The Data Connection - Part III: Working With DB2 Data

Working with DB2 data

Computer Exercise: Working wth DB2 Data (optional)

Hidden Controls and cookies

Session continuity

Hidden controls

Modifying the previous CGI [to emit data]

Designing the invoked CGI [to catch data]

Coding the invoked CGI [to catch data]

Computer Exercise: The Persistence of Memory

POST Requests

Finding needed storage size

Allocating storage

Reading from stdin

Breaking Apart Headers and Data

Our Sample POST CGI Logic

The TCBPSTD CGI code

Computer Exercise: Handling POST Processing

Handling Files Sent by POST

File Handling

Computer Exercise: Saving and Linking to Files

Working With Unicode Data

The Role of Unicode

CGIs and Unicode

Computer Exercise: Working With Unicode

Submitting jobs from a CGI

Set up

Logic

Computer Exercise: Submitting a job (optional)

UC04 / 2 Days

Materials version: V2.x

Course description
Course Objectives
z/OS UNIX curriculum
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