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| Special Notices | |
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| Preface | |
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| How This Book Is Organized | |
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| Related Publications | |
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| International Technical Support Organization Publications | |
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| International Technical Support Organization | |
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| About the Authors | |
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| Acknowledgments | |
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| Introduction | |
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| Introduction to Distributed Systems | |
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| Distributed Systems | |
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| The Client/Server Computing Model | |
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| Client/Server Styles | |
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| Challenges in Building Distributed Systems | |
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| Approaches to Building Distributed Systems | |
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| Examples of Distributed Systems | |
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| Data and Function Placement | |
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| Data Distribution | |
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| Function Distribution | |
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| Distributed Object Applications | |
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| Distributed Object Computing | |
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| Distributed Objects | |
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| Evolution of Client/Server Implementation with Objects | |
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| Applicability of Distributed Objects | |
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| Object Server | |
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| Active Server | |
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| Peer-to-Peer | |
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| Industry Standards | |
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| The Object Management Group (OMG) | |
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| Object Management Architecture (OMA) | |
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| OMA Reference Model | |
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| OMA Components | |
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| The OMG Object Model | |
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| Common Object Request Broker Architecture (CORBA) | |
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| Structure of an Object Request Broker (ORB) | |
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| CORBA 2.0 Specification | |
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| The System Object Model | |
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| Problems with Today's Object Models | |
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| A Solution | |
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| The Object Model | |
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| Interface Definition Language | |
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| Language-independence | |
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| Release-to- Release Binary Compatibility | |
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| Packaging Technology | |
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| Relationship Between CORBA and SOM | |
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| Distributed Objects | |
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| IBM SOMobjects Developer Toolkit Version 2.1 | |
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| Distributed SOM Framework | |
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| Replication Framework | |
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| Persistence Framework | |
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| Event Manager Framework | |
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| Interface Repository Framework | |
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| Emitter Framework | |
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| Collection Classes | |
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| Outlook: SOMobjects Developer Toolkit Version 3.0 | |
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| Object Request Broker Interoperability | |
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| Programming Model | |
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| Object Services | |
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| IBM Distributed Smalltalk Technology | |
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| VisualAge SOMsupport | |
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| New in VisualAge Version 3.0 SOMsupport | |
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| Expected Benefits | |
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| VisualAge Distributed Feature | |
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| Distributed Object Space | |
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| Distributed Object Space Run-time Environment | |
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| Distribution Toolkit | |
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| Implementation Alternatives for SOM Objects | |
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| Interface Definition Language Approach | |
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| Server Development | |
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| Client Development | |
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| Direct-To-SOM Approach | |
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| Relationship of Direct-To-SOM to Distributed SOM | |
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| Relationship to C++ | |
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| Direct-To-SOM C++ Compilers | |
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| Direct-To-SOM Programming | |
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| Accessing SOM Objects Using VisualAge Smalltalk | |
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| Constructing SOM Wrapper Classes | |
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| Using Wrapper Classes | |
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| A Quick Tour through the Distributed SOM Object Land | |
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| The Celsius/Fahrenheit converter | |
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| Developing the SOMThermometer class | |
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| Installing the Required Products | |
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| Setting Up the Environment | |
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| Creating the IDL for SOMThermometer | |
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| Generating Binding Files and Updating the Interface Repository | |
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| Creating the SOMThermometer DLL | |
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| Registering the DSOM Alias for SOMThermometer Class | |
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| Creating a Test Program | |
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| Testing the SOMThermometer Class | |
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| Generating SOM Wrapper for SOMThermometer | |
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| Developing the SOMThermometerView | |
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| Experiences | |
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| Developing A Distributed Object Application | |
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| The Foreign Currency Exchange (FCE) Case Study | |
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| Requirements Specifications | |
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| The Solution Prototype | |
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| Project Objectives | |
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| Project Iterations | |
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| Incremental Development | |
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| Distributed FCE | |
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| Application Scenarios | |
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| Customer Management: Object Server | |
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| Exchange Rate Management: Active Server | |
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| Currency Trading Between Banks: Peer-to-Peer | |
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| Analyzing the FCE System | |
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| Object-Oriented Analysis | |
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| Studying the Requirements for our Case Study | |
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| Reviewing the Existing Case Study | |
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| Use Cases | |
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| User Interface | |
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| Object Model | |
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| Dynamic Model | |
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| Designing the FCE Application with Distributed Objects | |
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| Designing Distributed Object Applications | |
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| System Design | |
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| Choosing the Implementation Technology | |
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| Subsystem Design and Placement | |
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| Function Placement (Fat Client or Fat Server?) | |
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| Data Placement | |
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| Other Considerations | |
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| Object Design | |
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| Designing the Solution Domain Classes | |
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| Object Design for the Server | |
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| Object Design for the Client | |
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| Designing with VisualAge SOMsupport | |
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| Object Persistence Design | |
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| SOM Support for Persistence | |
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| Object to Database Mapping | |
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| Performance Considerations | |
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| Data Storage and Management | |
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| Implementing the Distributed FCE Application | |
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| Server Implementation | |
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| Write Class Description in IDL | |
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| Register Classes in SOM Interface Repository | |
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| Generate Language Bindings for C++ | |
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| Generate C++ Program Skeleton Code from IDL | |
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| Creating Stub DLLs | |
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| Generate Data Access (DAX) Objects | |
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| Adding Business Logic | |
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| SOMAccount Makefile | |
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| Register Server Objects | |
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| Client Implementation | |
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| Generating VisualAge SOM Wrapper Classes for the Client | |
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| Modifying the FCE Application To Use SOM Objects | |
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| Visual Parts | |
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| Script | |
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| Considerations for Using VisualAge SOMsupport | |
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| Support of SOM Data Types | |
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| Memory Management | |
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| Exception Handling | |
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| Redirecting SOM Character Output to Smalltalk | |
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| Setting Up an Individual Test Environment | |
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| Additional Considerations | |
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| Looking Ahead | |
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| Appendixes | |
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| Requirement Specifications | |
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| Branch Functions | |
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| Center Functions | |
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| Setting Up the Implementation Platform | |
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| Recommended Hardware | |
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| Required System Software | |
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| Setting Up the Server System | |
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| Setting Up the Client System | |
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| FCE Database Definitions | |
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| Data Definition Language for Relational Tables | |
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| Data Definition Language for Relational Tables of Server | |
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| SOM IDL Interface Listings | |
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| SOMAccount Interface | |
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| SOMBank Interface | |
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| SOMCustomer Interface | |
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| SOM Objects Implementation Files | |
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| SOMAccount Implementation | |
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| SOMBank Implementation | |
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| SOMCustomer Implementation | |
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| List of Abbreviations | |
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| Bibliography | |
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| Index | |