Designing & Programming CICS Applications

John Horswill is a member of IBM's CICS User Technology team at IBM in Hursley Park, UK. He has been involved delivering information on various platforms including OS/390, AIX, Solaris, Digital UNIX, HP and Windows NT for the past 11 years. Before joining IBM he worked in Further Education in England for many years. He graduated from London University and completed an M.Sc in applied cell science and virology at Brunel University before turning his attention to computing. Andy Krasun graduated from Oxford University, UK, with a B.A. degree and, not wishing to start work straightaway, went to take an M.Sc in numerical analysis at Dundee University in Scotland. He has worked in and around CICS since it arrived in Hursley near Winchester England in 1975 and is currently in the CICS Strategy group. He is well-known at user groups around the world for his talks on CICS application design, distributed CICS and application development. Rob Breeds is a software engineer in the CICS/ESA Data Communications Development group at IBM Hursley. He is part of the Application Development Infrastructure team, providing workstation-based development tools for forthcoming releases of CICS. He has previously worked in application development, marketing, publishing and sales roles. Mike Moynihan has worked for IBM since 1988. For the past four years he has been part of the Advanced Solutions Group in Hursley, putting together end-to-end demonstrations, using mixes of IBM's and other manufacturers' products. He has also worked on the group's Solution Kit for e-business. Becca Dunleavey joined IBM in 1995. In 1997 She joined the CICS/390 System Test Group, where she was part of the team testing CICS Transaction Server 1.3. She became team leader for the CICS Current Release System Test team in 1999, where she became involved with Designing and Programming CICS Applications. Steve Young is a Sun Certified Java Programmer working in the UK Advanced Solution Group at Hursley. He has worked on developing and showing fully functional CICS demos since joining IBM in 1998. He is quoted as saying that "Without this book I don't know where I would be today...probably at home, with more hair, lower blood pressure and a smile on my face (but without the satisfaction, of course...)." Phil Appleby joined IBM in 1986, and has worked mainly as a technical writer and editor.

Preface I. Introduction to CICS 1. Introduction The Essentials of a Business Application Business Applications as Creators of Value Using CICS for Business Applications 2. Designing Business Applications The Heart of a Business Application How CICS Can Help the Application Designer Developing the Components of a Business Application What's Next... 3. Introducing the Sample Application The Business Case The Design of the Sample Application What's Next... II. The COBOL Business Logic Component 4. Designing the Business Logic Understanding What COBOL Components Need to Do Incorporating CICS Design Guidelines Handling Data Designing the Individual Functions Mapping the Functions to CICS Programs Looking at the Business Logic Programs Summary 5. Programming the COBOL Business Logic Writing CICS Programs in COBOL Handling Files Saving Data: Using a Scratchpad Facility Controlling Programs Abending a Transaction Queuing Facilities: Temporary Storage and Transient Data Handling Errors What's Next... III. The CICS Java Component 6. Designing the CICS Java Component Background to Java and CORBA in a CICS Environment Understanding What This Component Needs to Do Describing a Customer Account Object with IDL Design of the CICS Java Component Implementing CICS Java Components What's Next... 7. Programming the CICS Java Component Tools Setting Up Your Development Environment Creating and Compiling the IDL Definition Writing the Server Implementation Class Exporting and Binding the Server Application to the CICS Region Creating the CORBA Client What's Next... IV. The Web Component 8. Designing the Web Component Understanding What the Component Needs To Do Designing the Web Interface Designing the Web Server Components Designing the CORBA Client Implementation What's Next... 9. Programming the Web Component Tools Building the Web Site Programming the Web Server Components What's Next... V. The 3270 Interface 10. Designing the Presentation Logic Understanding What the Presentation Logic Component Needs to Do Interface Design Principles Incorporating CICS Design Guidelines Designing the Functions 11. Programming the 3270 Presentation Logic Component Defining Screens with Basic Mapping Support (BMS) Symbolic Description Maps Sending a Map to a Terminal Local Printing (NACT03): Requests for Printing What's Next... 12. Designing the Visual Basic Component Understanding What the Component Needs to Do Designing the Graphical User Interface Designing the Print Function Designing the Online Help Designing the Data Validation Designing Access to and Control of the CICS Application Designing Error Handling VI. The Visual Basic Component 13. Programming the Visual Basic Program Writing the Graphical User Interface Implementing the Print Function Implementing the Online Help Implementing the Data Validation Code Accessing Applications on the CICS Server Communicating with CICS What's Next.... VII. CICS and MQSeries 14. Designing an Application to Use the MQSeries-CICS Bridge Background to MQSeries The MQSeries-CICS Bridge Designing the Graphical User Interface Designing the Java Application Configuring MQSeries Running CICS DPL Programs Why Design It This Way? What's Next... 15. Programming the MQSeries-CICS Bridge Building the Java GUI Coding the Java Application Setting Up MQSeries and CICS VIII. Debugging 16. Debugging in CICS CICS-Supplied Transactions EDF: Execution Diagnostic Facility Summary IX. Appendices A. Configuring Your CICS for OS/390 Environment B. List of CD-ROM Files Glossary Suggestions for Further Reading Index