TSO CLIST Programming

Duration:   3 days

Participants:   Application programmers and developers, technical support personnel, and users.

Objectives:   Upon successful completion of this course you will be able to: -  Design, code, enter, and execute structured CLIST programs to accomplish commonly encountered tasks such as running programs in foreground, processing utility tasks, customizing JCL, submitting jobs to background, invoking other applications, etc. -  Incorporate TSO commands into CLIST programs. -  Code nested CLIST programs. -  Perform file I/O processing using Openfile, Getfile, Putfile, Closfile, and ERROR. -  Use built-in functions to validate input data, manage string data, and control processing. -  Build business applications that involve trapping screen output, producing reports, and managing data. -  Describe Dialog Manager and some basic ways that it can interfaces with a CLIST.

Overview:   -  This class teaches participants to write CLIST programs that perform utility tasks, submit customized batch jobs, launch online applications, create short, online reports, and other typical business uses. -  Attendees need not be programmers, but we discourage including both non-programmers and programmers in the same class, because of their different needs and significantly different backgrounds. For a class of non-programmers, we present this course at a different pace and omit complex program logic topics. For non-programmers, the focus is more on accessing system data and creating quick and dirty reports. This class or our REXX class is required before attending our Dialog Manager class. -  Students are encouraged to follow this class with a Dialog Manager class to create full-screen I/O, have more robust variable management, create ISPF tables, and perform various library services.

Prerequisites:   Experience using TSO/ISPF is required. An understanding of programming concepts is strongly recommended.

Format:   Lecture and hands-on computer workshops. For a class of students without programming experience, we present this course at a different pace and omit complex program logic topics. We discourage including non-programmers and programmers in the same class. Students are encouraged to follow this class with our Dialog Manager class, to create full-screen I/O, better variable management, etc.

Topic Outline:   -  Creating a CLIST         CLIST libraries         Attributes         LISTA command         Record formats -  Executing a CLIST         EXEC         Using PF keys         CLIST libraries (FB and VB)         SYSPROC concatenation         Implicit method (% member) -  Using TSO Commands in CLISTs         ALLOC, ATTRIB, CALL, EXEC, LISTA, FREE, LISTC, DELETE         Continuation rules         Comments as documentation -  Programmable CLISTs         Symbolic variables         Screen Input and Output (I/O)         Clearing the screen         SET         Arithmetic operations              Coding rules              Expressions -  Submitting Background Jobs from CLISTs         SUBMIT datasets         SUBMIT * -  PROC Statements         Positional parameters         Keyboard parameters with default values         Keyboard parameters without default values -  Debugging Techniques         CONTROL         LIST         SYMLIST         CONLIST -  CLIST Programming         CONTROL END         Conditional processing         Iteration: DO WHILE, DO UNTIL, GO TO         CONTROL: NOFLUSH, MAIN NOMSG, PROMPT, CAPS         String functions and control variables         Validation routines         Interrupt routines              ERROR              ATTN              Exiting from interrupt routines -  File I/O Processing         CONTROL options         ERROR DO, ATTN DO         ALLOC, FREE         OPENFILE, GETFILE, PUTFILE, CLOSFILE         Creating and writing to PS datasets         Reading PS datasets and members of partitioned datasets         String manipulation techniques         Releasing unused space         Trapping and processing LISTC output         Determining generation dataset absolute generation numbers -  Trapping Output         &SYSOUTTRAP         Arrays and looping         &SYSOUTLINE         &SUBSTR         Uses -  Monitoring Datasets         LISTDSI         Using LISTDSI with trapped LISTC output -  Multi-Module (Nested) CLIST Programs         Input from the execute line (PROC)         Control options         GLOBAL, NGLOBAL         Exiting from subprograms         &LASTCC setting         Subprograms in separate members         Subprograms in the same member -  Compile, Link and Go CLISTs -  Advanced Topics         TSO EDIT command         Lowercase and uppercase data         Additional functions         Introduction to Dialog Manager

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