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Full Description
With COM and .NET Component Services, skilled COM developers can leverage their knowledge for the next generation of components to be built for Microsoft's new .NET framework. A primary goal of Microsoft's COM+ is to provide proven design solutions for scalable systems. Assuming experience with classic COM, COM and .NET Component Services focuses on the added services of COM+, including support for transactions, queued components, events, concurrency management, and security. Along the way, it ably demonstrates that COM+ is a masterpiece of design and usability from the ground up--truly a mature set of component services oriented for the middle tier. COM+ provides a foundation for robust, enterprise-wide, mission-critical distributed applications. And it's not limited to Internet applications. You can use COM+ services in the same places as classic COM components: in-house two-tier information systems, client-tier controls, desktop applications, machine control components, and every other conceivable application of COM. COM and .NET Component Services is the first book to stress the importance of learning to use COM+ services for both .NET and COM component-based applications.
Since most companies have considerable investment in existing code base and development skills, COM+ can serve as a migration path for companies and developers. Companies can start (or continue) their projects in COM, using COM+ as a supporting platform for component services, and then when the time comes to move to .NET, they can start plugging .NET components seamlessly into the same architecture, reusing and interacting with their existing COM components.
Contents
Foreword. Preface. 1. COM+ Component Services COM+ Component Services The Component Services Explorer Hello COM+ COM+ Configured Components Applications, DLLs, and Components Configuring COM+ Applications Debugging COM+ Applications Deploying COM+ Applications Summary. 2. COM+ Context Encapsulation via Marshaling in COM Encapsulation via Interception in COM+ The Context Object The Call Object Cross-Context Manual Marshaling Summary. 3. COM+ Instance Management Client Types Instance Management and Scaling Object Pooling Just-in-Time Activation Combining JITA with Object Pooling Object Constructor String COM+ Instance Management Pitfalls. 4. COM+ Transactions Transaction Basics Transaction Properties Transaction Scenarios COM+ Transactions Architecture Configuring Transactions Voting on a Transaction Transactional Object Life Cycle Designing Transactional Components Nontransactional Clients Transactions and Object Pooling Compensating Transactions Transaction Execution Time Tracing Transactions In-Doubt Transactions Transaction Statistics COM+ Transactions Pitfalls. 5. COM+ Concurrency Model Object-Oriented Programming and Multiple Threads Apartments: The Classic COM Solution Activities: The COM+ Innovation COM+ Configuration Settings Activities and JITA Activities and Transactions Tracing Activities The Neutral Threaded Apartment Summary. 6. Programming the COM+ Catalog Why Program the Catalog? The Catalog Programming Model Catalog Structure Interacting with the Catalog Features of COMAdminCatalog The COM+ Catalog and Transactions Summary. 7. COM+ Security The Need for Security Basic Security Terms Role-Based Security Securing a Server Application Securing a Library Application Programmatic Role-Based Security Security Boundaries Advanced COM+ Security COM+ Security Pitfalls Summary. 8. COM+ Queued Components Major Benefits of Queued Components Queued Components Architecture Component Services Explorer Configuration Invoking Queued Components on the Client Side Designing Queued Component Interfaces Receiving Output from a Queued Component Queued Component Error Handling Queued Components and Transactions Synchronous Versus Asynchronous Components Queued Components Security Queued Components Pitfalls Summary. 9. COM+ Event Service Classic COM Events COM+ Event Model The Event Class Subscription Types Delivering Events Event Filtering Distributed COM+ Events Asynchronous Events COM+ Events and Transactions COM+ Events and Security COM+ Events Limitation Summary. 10. .NET Serviced Components Developing Serviced Components .NET Assemblies and COM+ Applications Registering Assemblies Configuring Serviced Components Application Activation Type The Description Attribute Accessing the COM+ Context COM+ Context Attributes COM+ Object Pooling COM+ Just-in-Time Activation COM+ Constructor String COM+ Transactions COM+ Synchronization Programming the COM+ Catalog COM+ Security COM+ Queued Components COM+ Loosely Coupled Events Summary. A. The COM+ Logbook B. COM+ 1.5 C. Introduction to .NET Index
