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| About the Authors | |
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| Foreword | |
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| Preface | |
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| Acknowledgments | |
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| Concepts | |
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| COBOL and Objects? | |
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| Focus of This Chapter | |
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| Why Objects? | |
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| What Is an Object? | |
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| Why Object-Oriented COBOL? | |
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| A Brief History of Objects | |
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| An Object-Oriented COBOL Model | |
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| Focus of This Chapter | |
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| Responsibility-Driven Design | |
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| The Components of Construction | |
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| Class Libraries | |
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| Object Technology--A Consistent Approach | |
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| Constructs | |
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| Classes-A Matter of Structure | |
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| Focus and Format of This Chapter | |
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| A Quick Look at the Syntax | |
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| The Class Program | |
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| The Class Definition | |
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| The Factory Object | |
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| The Factory Definition | |
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| Methods | |
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| The Method Definition | |
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| The Class Interface | |
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| Putting the Pieces Together | |
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| Classes in Applications | |
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| Objects | |
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| Focus and Format of This Chapter | |
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| The Context of an Object Definition | |
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| The Object Definition | |
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| Methods | |
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| The Method Definition | |
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| Object Handles | |
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| Object Notation | |
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| The Evolution of Programming Languages | |
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| Responsibility-Driven Design and Objects | |
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| Inheritance | |
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| Focus and Format of This Chapter | |
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| Inheritance | |
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| Abstract Classes | |
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| The Inheritance Hierarchy | |
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| Multiple Inheritance | |
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| Class Relationship Diagrams | |
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| Objects in Action | |
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| Messages | |
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| Focus and Format of This Chapter | |
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| Messages | |
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| The Invoke Statement | |
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| Specifying Object Behavior | |
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| Applying Responsibility-Driven Design | |
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| Creating and Destroying Objects | |
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| Focus and Format of This Chapter | |
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| An Object's Life Span | |
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| Creating Objects | |
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| Creating Objects with Restrictions | |
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| Destroying Objects | |
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| Responsibility-Driven Design and Creating Objects | |
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| Working with Objects | |
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| Focus and Format of This Chapter | |
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| The Scope of Variables | |
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| Object-Relation Conditions | |
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| Conformance | |
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| In-Line Method Invocation | |
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| Using In-Line Invocation | |
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| The Property Clause | |
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| The No-Set Attribute | |
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| The No-Get Attribute | |
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| Nested Properties | |
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| Applying In-Line Invocations and Properties | |
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| Working with Static Objects | |
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| Collections | |
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| Focus and Format of This Chapter | |
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| Collection Classes--A Hierarchy | |
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| Creating Bag Instances: of References | |
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| Creating Character Array Instances | |
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| Creating Dictionary Instances | |
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| Collections in Action | |
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| Putting Objects to Work | |
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| Object-Oriented Analysis and Design | |
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| Focus and Format of This Chapter | |
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| Analysis and Design | |
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| Rolling Lifecycle Perspective | |
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| A Worked Example of Object-Oriented Analysis and Design | |
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| Migrating Legacy Systems | |
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| Focus and Format of This Chapter | |
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| Legacy Options | |
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| Do Nothing Object Oriented | |
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| GUI Interfaces for Legacy Code | |
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| Adding Object-Based Functionality to an Application | |
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| Wrapping Programs | |
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| Legacy Applications and Distributed Computing | |
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| Appendixes | |
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| Object-Oriented COBOL Vendors: Hitachi, IBM, and Micro Focus | |
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| Hitachi | |
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| IBM | |
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| Micro Focus | |
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| Other Features Not Supported by the Vendors | |
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| The Library Application | |
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| Notes on Style | |
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| The Compiler | |
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| CRC Cards | |
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| Diagrams | |
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| The Library Application Code | |
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| COBOL Reserved Words | |
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| New COBOL Reserved Words | |
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| Intrinsic Functions | |
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| COBOL 85/89 Features | |
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| Nested Programs | |
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| Data Sharing | |
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| Flow of Control | |
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| Intrinsic Functions | |
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| Numeric Functions: Factorial and Sum | |
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| Date Functions: Current-Date, Day-Of-Integer, Date-Of-Integer, Integer-Of-Date, Integer-Of-Day | |
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| Miscellaneous | |
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| The Proposed COBOL 97 Language Syntax | |
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| Program Instruction Formats | |
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| Glossary | |
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| Index | |