Professional Visual Basic 6 D Istributed Objects
by Rocky LhotkaFormat: Trade Paper
Pub. Date: 1999-06-01
Publisher(s): John Wiley & Sons Inc
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Summary
Many VB developers face the challenge of building scalable applications using distributed COM objects in Visual Basic 6. There are many books which describe n-tier architecture and also object-oriented programming, but this book is about merging the best capabilities of the Object-Oriented (OO) approach with a system architecture.
Table of Contents
| Introduction | p. 1 |
| What's Covered in This Book | p. 1 |
| COM and DCOM | p. 2 |
| Component-based Scalable Logical Architecture | p. 4 |
| N-level Object State Rollback | p. 5 |
| Implementing n-level has-a Relationships | p. 6 |
| Data Binding With Business Objects | p. 7 |
| Asynchronous Messages Via MSMQ | p. 8 |
| RDS: Object State Passing Via HTTP | p. 9 |
| Load balancing across MTS servers | p. 10 |
| Who Is This Book For? | p. 10 |
| What You'll Need To Use This Book | p. 10 |
| Conventions Used | p. 11 |
| Tell Us What You Think | p. 11 |
| Source Code | p. 11 |
| Support | p. 12 |
| Distributed Objects | p. 15 |
| Overview | p. 15 |
| Distributed Objects | p. 15 |
| Client/Server | p. 16 |
| Object-Oriented Development | p. 20 |
| Distributed Objects: Combining C/S and OO | p. 27 |
| Component-based Scalable Logical Architecture | p. 28 |
| Overview of the CSLA | p. 28 |
| Physical Model | p. 31 |
| Implementing Applications with CSLA | p. 40 |
| Summary | p. 51 |
| Task Manager Application | p. 53 |
| Overview | p. 53 |
| Task Manager Application | p. 54 |
| UI-centric Objects | p. 57 |
| Data-centric Objects | p. 72 |
| Data Tables | p. 92 |
| A Simple User Interface | p. 97 |
| Summary | p. 108 |
| Complex Object State Rollback | p. 111 |
| Overview | p. 111 |
| N-level Rollback | p. 112 |
| Single-level Rollback | p. 112 |
| 2-level Rollback | p. 113 |
| N-level Rollback | p. 115 |
| Updating the Task Manager Application | p. 128 |
| Adding the Task Class | p. 129 |
| Adding the Tasks Class | p. 134 |
| Updating the Project Class | p. 138 |
| Updating the Projects Class | p. 141 |
| Updating the Client Class | p. 144 |
| Handling Deletion of Child Objects | p. 146 |
| Updating the User Interface | p. 153 |
| Summary | p. 158 |
| Passing Object State Across the Network | p. 161 |
| Overview | p. 161 |
| Introducing the SuperState | p. 162 |
| Serializing Object State | p. 163 |
| Passing Objects by Value | p. 173 |
| Defining the SuperState | p. 174 |
| Creating a SuperState | p. 177 |
| Updating the Task Manager Application | p. 183 |
| Updating the TaskObjects Project | p. 184 |
| Updating the TaskServer Project | p. 194 |
| Summary | p. 210 |
| Binding to Business Objects | p. 213 |
| Overview | p. 213 |
| Visual Basic Data Binding Architecture | p. 214 |
| Creating a Data Source in Visual Basic | p. 217 |
| Setting up the ODSOLEDB Project | p. 219 |
| Implementing the Object List | p. 221 |
| Implementing the Data Source Object | p. 223 |
| Implementing the Simple Provider Objects | p. 228 |
| Registering the Data Source | p. 245 |
| Updating the Task Manager Application | p. 249 |
| Adding References | p. 249 |
| Data Binding in ClientEdit | p. 250 |
| Data Binding in ProjectEdit | p. 259 |
| Data Binding in TaskEdit | p. 259 |
| Summary | p. 261 |
| Using Microsoft Message Queue | p. 263 |
| Overview | p. 263 |
| Microsoft Message Queue | p. 266 |
| MSMQ Overview | p. 266 |
| MSMQ Availability and Tools | p. 271 |
| MSMQ Messages | p. 273 |
| MSMQ Queues | p. 274 |
| Architectural Approaches | p. 277 |
| Referencing the MSMQ Library | p. 278 |
| Basic Components | p. 278 |
| Application Models | p. 286 |
| Integration with the CSLA | p. 294 |
| Persistable UI-centric Objects | p. 295 |
| Sending Raw State Data | p. 301 |
| Action-based Objects | p. 304 |
| Updating the Task Manager Application | p. 311 |
| Creating the Receiver | p. 311 |
| Updating the Task Objects Project | p. 318 |
| Summary | p. 319 |
| Distributed Objects and the Web | p. 321 |
| Overview | p. 321 |
| Object State and IIS | p. 322 |
| Storing Data in IIS | p. 323 |
| Updating the Task Manager Application | p. 327 |
| Distributing Objects to the Browser | p. 333 |
| Storing Data Across Pages | p. 334 |
| Creating the Session Object | p. 336 |
| Updating the Task Manager Application | p. 342 |
| Using Remote Data Services | p. 353 |
| How RDS Works | p. 354 |
| Updating the Task Manager Application | p. 356 |
| Summary | p. 361 |
| Implementing a Load Balancing Cluster | p. 363 |
| Overview | p. 363 |
| Load Balancing | p. 364 |
| Load Balancing Techniques | p. 364 |
| Load Balancing Technologies | p. 366 |
| Implementing a Cluster | p. 368 |
| The Worker Monitor | p. 371 |
| The Cluster Monitor | p. 379 |
| The Cluster Server | p. 406 |
| Implementing Client Software | p. 410 |
| Updating the Task Manager Application | p. 415 |
| Updating TaskProxyServer | p. 415 |
| Summary | p. 417 |
| Supporting Code | p. 419 |
| Buffer Object | p. 419 |
| BrokenRules Object | p. 421 |
| Package and Deployment Wizard | p. 423 |
| Installing Components | p. 423 |
| Using the Package and Deployment Wizard | p. 423 |
| Package and Deployment Wizard | p. 423 |
| Installing Components | p. 423 |
| Using the Package and Deployment Wizard | p. 423 |
| Index | p. 433 |
| Table of Contents provided by Syndetics. All Rights Reserved. |
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