- WCF Multi-tier Services Development with LINQ
- WCF Multi-tier Services Development with LINQ
- Credits
- About the Author
- About the Reviewers
- Preface
- 1. SOA Service Oriented Architecture
- 2. WCF Windows Communication Foundation
- 3. Implementing a Basic HelloWorld WCF Service
- 4. Hosting and Debugging the HelloWorld WCF Service
- Hosting the HelloWorld WCF service
- Debugging the HelloWorld WCF service
- Summary
- 5. Implementing a WCF Service in the Real World
- 6. Adding Database Support and Exception Handling to the RealNorthwind WCF Service
- 7. Modeling a WCF Service with Service Factory
- What is the Service Factory?
- What are Guidance Packages?
- Preparing environments
- Differences between the December 2006 version and the February 2008 version
- Modeling the data contracts
- Modeling the service contracts
- Specifying the implementation technology for the models
- Generating source code
- Summary
- 8. Implementing the WCF Service with Service Factory
- 9. Introducing Language-Integrated Query (LINQ)
- What is LINQ
- Creating the test solution and project
- New data type var
- Automatic properties
- Object initializer
- Collection initializer
- Anonymous types
- Extension methods
- Lambda expressions
- Built-in LINQ extension methods and method syntax
- LINQ query syntax and query expression
- Built-in LINQ operators
- Summary
- 10. LINQ to SQL: Basic Concepts and Features
- ORM Object-Relational Mapping
- Comparing LINQ to SQL with LINQ to Objects
- LINQ to Entities
- Comparing LINQ to SQL with LINQ to Entities
- Creating LINQ to SQL test application
- Modeling the Northwind database
- Querying and updating the database with a table
- Deferred execution
- Deferred (lazy) loading versus eager loading
- Joining two tables
- Querying a view
- Summary
- 11. LINQ to SQL: Advanced Concepts and Features
- Calling a stored procedure
- Compiled query
- Direct SQL
- Dynamic query
- Inheritance
- Handling simultaneous (concurrent) updates
- Transactions support
- Adding validations to entity classes
- Debugging LINQ to SQL programs
- Summary
- 12. Applying LINQ to SQL to a WCF Service
- Creating the LINQNorthwind solution
- Modeling the data contracts
- Modeling the service contracts
- Generating the source code
- Modeling the Northwind database
- Implementing the data access layer
- Implementing the business logic layer
- Implementing the service interface layer
- Creating the host application and the test client
- Testing the GetProduct and UpdateProduct operations
- Testing concurrent update manually
- Testing concurrent update automatically
- Summary
- 13. Distributed Transaction Support of WCF
- Creating the DistNorthwind solution
- Testing the transaction behaviour of the WCF service
- Creating a client to call the WCF service sequentially
- Testing the sequential calls to the WCF service
- Wrapping the WCF service calls in one transaction scope
- Testing multiple database support of the WCF service
- Modifying the data access layer for the second database support
- Modifying the business logic layer for the second database support
- Modifying the service interface layer for the second database support
- Modifying the service host for the second database support
- Modifying the client for the second database support
- Testing the WCF service with two databases
- Enabling distributed transaction support
- Understanding distributed transaction support of a WCF service
- Testing the distributed transaction support of the WCF service
- Summary
Next
Next Chapter
6. Adding Database Support and Exception Handling to the RealNorthwind WCF Service
In this chapter, we have created a real world WCF service that has a service contract layer, and a business logic layer. The key points in this chapter include:
- WCF Services should have explicit boundaries
- The WCF Service Application template can be used to create WCF services with a hosting web site created within the project
- The WCF Service Library template can be used to create WCF services that will be hosted by the WCF Service Host, and these can be tested using the WCF service Test Client
- The service interface layer should contain only the service contracts, such as the operation contracts, and data contracts
- The business logic layer should contain the implementation of the service
- The business entities represent the internal data of the service shared by all of the layers of the service, and they should not be exposed to the clients
-
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