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| Foreword | |
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| Foreword | |
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| Preface | |
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| Acknowledgments | |
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| Introduction | |
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| Solving Integration Problems Using Patterns | |
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| The Need for Integration | |
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| Integration Challenges | |
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| How Integration Patterns Can Help | |
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| The Wide World of Integration | |
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| Loose Coupling | |
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| One-Minute EAI | |
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| A Loosely Coupled Integration Solution | |
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| Widgets & Gadgets 'R Us: An Example | |
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| Internal Systems | |
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| Taking Orders | |
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| Processing Orders | |
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| Checking Status | |
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| Change Address | |
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| New Catalog | |
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| Announcements | |
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| Testing and Monitoring | |
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| Summary | |
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| Integration Styles | |
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| Introduction | |
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| File Transfer | |
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| Shared Database | |
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| Remote Procedure Invocation | |
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| Messaging | |
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| Messaging Systems | |
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| Introduction | |
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| Message Channel | |
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| Message | |
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| Pipes and Filters | |
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| Message Router | |
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| Message Translator | |
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| Message Endpoint | |
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| Messaging Channels | |
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| Introduction | |
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| Point-to-Point Channel | |
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| Publish-Subscribe Channel | |
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| Datatype Channel | |
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| Invalid Message Channel | |
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| Dead Letter Channel | |
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| Guaranteed Delivery | |
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| Channel Adapter | |
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| Messaging Bridge | |
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| Message Bus | |
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| Message Construction | |
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| Introduction | |
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| Command Message | |
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| Document Message | |
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| Event Message | |
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| Request-Reply | |
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| Return Address | |
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| Correlation Identifier | |
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| Message Sequence | |
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| Message Expiration | |
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| Format Indicator | |
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| Interlude: Simple Messaging | |
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| Introduction | |
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| Request-Reply Example | |
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| Publish-Subscribe Example | |
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| JMS Request-Reply Example | |
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| Request-Reply Example | |
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| Request-Reply Code | |
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| Invalid Message Example | |
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| Conclusions | |
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| .NET Request-Reply Example | |
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| Request-Reply Example | |
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| Request-Reply Code | |
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| Invalid Message Example | |
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| Conclusions | |
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| JMS Publish-Subscribe Example | |
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| The Observer Pattern | |
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| Distributed Observer | |
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| Publish-Subscribe | |
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| Comparisons | |
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| Push and Pull Models | |
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| Channel Design | |
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| Conclusions | |
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| Message Routing | |
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| Introduction | |
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| Content-Based Router | |
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| Message Filter | |
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| Dynamic Router | |
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| Recipient List | |
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| Splitter | |
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| Aggregator | |
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| Resequencer | |
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| Composed Message Processor | |
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| Scatter-Gather | |
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| Routing Slip | |
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| Process Manager | |
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| Message Broker | |
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| Message Transformation | |
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| Introduction | |
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| Envelope Wrapper | |
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| Content Enricher | |
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| Content Filter | |
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| Claim Check | |
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| Normalizer | |
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| Canonical Data Model | |
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| Interlude: Composed Messaging | |
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| Loan Broker Example | |
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| Obtaining a Loan Quote | |
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| Designing the Message Flow | |
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| Sequencing: Synchronous versus Asynchronous | |
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| Addressing: Distribution versus Auction | |
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| Aggregating Strategies: Multiple Channels versus Single Channel | |
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| Managing Concurrency | |
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| Three Implementations | |
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| Synchronous Implementation Using Web Services | |
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| Solution Architecture | |
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| Web Services Design Considerations | |
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| Apache Axis | |
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| Service Discovery | |
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| The Loan Broker Application | |
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| Components of the Loan Broker Application | |
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| Client Application | |
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| Running the Solution | |
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| Performance Limitations | |
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| Limitations of This Example | |
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| Summary | |
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| Asynchronous Implementation with MSMQ | |
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| Loan Broker Ecosystem | |
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| Laying the Groundwork: A Messaging Gateway | |
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| Base Classes for Common Functionality | |
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| Designing the Bank | |
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| Designing the Credit Bureau | |
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| Designing the Loan Broker | |
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| Refactoring the Loan Broker | |
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| Putting it All Together | |
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| Improving Performance | |
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| A Few Words on Testing | |
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| Limitations of This Example | |
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| Summary | |
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| Asynchronous Implementation with TIBCO ActiveEnterprise | |
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| Solution Architecture | |
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| The Implementation Toolset | |
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| The Interfaces | |
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| Implementing the Synchronous Services | |
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| The Loan Broker Process | |
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| Managing Concurrent Auctions | |
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| Execution | |
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| Conclusions | |
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| Messaging Endpoints | |
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| Introduction | |
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| Messaging Gateway | |
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| Messaging Mapper | |
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| Transactional Client | |
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| Polling Consumer | |
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| Event-Driven Consumer | |
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| Competing Consumers | |
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| Message Dispatcher | |
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| Selective Consumer | |
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| Durable Subscriber | |
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| Idempotent Receiver | |
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| Service Activator | |
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| System Management | |
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| Introduction | |
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| Control Bus | |
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| Detour | |
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| Wire Tap | |
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| Message History | |
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| Message Store | |
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| Smart Proxy | |
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| Test Message | |
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| Channel Purger | |
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| Interlude: System Management Example | |
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| Loan Broker System Management | |
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| Instrumenting the Loan Broker | |
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| Management Console | |
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| Loan Broker Quality of Service | |
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| Verify the Credit Bureau Operation | |
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| Credit Bureau Failover | |
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| Enhancing the Management Console | |
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| Limitations of This Example | |
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| Integration Patterns in Practice | |
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| Case Study: Bond Pricing System | |
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| Building a System | |
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| Architecture with Patterns | |
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| Structuring Channels | |
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| Selecting a Message Channel | |
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| Problem Solving with Patterns | |
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| Flashing Market Data Updates | |
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| Major Production Crash | |
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| Summary | |
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| Concluding Remarks | |
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| Emerging Standards and Futures in Enterprise Integration | |
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| The Relationship between Standards and Design Patterns | |
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| Survey of Standards Processes and Organizations | |
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| Business Process Components and Intra-Web Service Messaging | |
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| ebXML and the Electronic Business Messaging Service (ebMS) | |
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| Business Process Execution Language for Web Services (BEPL4WS) | |
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| Web Service Choreography Interface (WSCI) | |
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| Java Business Process Component Standards | |
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| WS-* | |
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| Conclusions | |
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| Bibliography | |
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| Index | |