Table Of 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
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