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  • Book Overview & Buying WCF Multi-layer Services Development with Entity Framework - Fourth Edition
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WCF Multi-layer Services Development with Entity Framework - Fourth Edition

WCF Multi-layer Services Development with Entity Framework - Fourth Edition

By : Mike Liu
4.2 (13)
Buy this Book
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WCF Multi-layer Services Development with Entity Framework - Fourth Edition

WCF Multi-layer Services Development with Entity Framework - Fourth Edition

4.2 (13)
By: Mike Liu
Buy this Book

Overview of this book

If you are a C#, VB.NET, or C++ developer and want to get started with WCF and Entity Framework, then this book is for you. Competence in Entity Framework will be needed to follow the examples in the book, but experience in creating WCF services using Entity Framework is not necessary. Developers and architects evaluating SOA implementation technologies for their company will find this book useful.
Table of Contents (15 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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1
1. Implementing a Basic HelloWorld WCF Service
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1. Implementing a Basic HelloWorld WCF Service
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The basic WCF concepts
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Creating the HelloWorld solution and project
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Defining the HelloWorldService service contract interface
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Implementing the HelloWorldService service contract
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Hosting the WCF service in IIS Express
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Creating a client to consume the WCF service
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Summary
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2. Hosting the HelloWorld WCF Service
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2. Hosting the HelloWorld WCF Service
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WCF hosting options
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Summary
3
3. Deploying the HelloWorld WCF Service
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3. Deploying the HelloWorld WCF Service
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Publishing the HelloWorldService from Visual Studio
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Publishing the HelloWorldService using a deployment package
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Summary
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4. Debugging the HelloWorld WCF Service
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4. Debugging the HelloWorld WCF Service
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Debugging a WCF service from a client application
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Directly debugging the WCF service
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Attaching the debugger to a running WCF service process
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Debugging a WCF service hosted in the cloud
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Summary
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5. Implementing a Three-layer WCF Service
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5. Implementing a Three-layer WCF Service
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Why layer a service?
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Creating a new solution and project using the built-in WCF service template
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Creating the service interface layer
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Adding a business logic layer
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Summary
6
6. Adding Database Support and Exception Handling
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6. Adding Database Support and Exception Handling
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Adding a data access layer
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Adding error handling to the service
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Summary
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7. LINQ to Entities – Basic Concepts and Features
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7. LINQ to Entities – Basic Concepts and Features
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LINQ to Entities
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Creating a LINQ to Entities test application
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Creating the data model
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Querying and updating a database table
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Viewing the generated SQL statements
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Deferred execution
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Deferred execution – lazy loading versus eager loading
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Joining two tables
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Querying a view
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Summary
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8. LINQ to Entities – Advanced Concepts and Features
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8. LINQ to Entities – Advanced Concepts and Features
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Calling a stored procedure
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Handling simultaneous (concurrent) updates
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Transaction support
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Summary
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9. Applying LINQ to Entities to a WCF Service
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9. Applying LINQ to Entities to a WCF Service
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Creating the LINQNorthwind solution
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Installing Entity Framework
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Modeling the Northwind database
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Creating the business domain object project
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Using LINQ to Entities in the data access layer
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Creating the business logic layer
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Creating the service interface layer
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Testing the service with the WCF Test Client
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Testing concurrency with our own client
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Hosting the WCF service in IIS
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Summary
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10. Distributed Transaction Support of WCF
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10. Distributed Transaction Support of WCF
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Creating the DistNorthwind solution
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Hosting the WCF service in IIS
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Testing the transaction behavior of the existing WCF service
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Enabling distributed transaction support
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Understanding the distributed transaction support of a WCF service
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Testing the distributed transaction support of the new WCF service
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Trade-offs of distributed transactions
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Summary
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11. Building a RESTful WCF Service
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11. Building a RESTful WCF Service
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SOAP versus REST
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WCF REST versus the ASP.NET Web API
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Creating the RESTNorthwind solution
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Creating the RESTful service
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Testing the RESTful service in a browser
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Testing the RESTful WCF service with a C#/XAML client
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Testing the RESTful WCF service with a JavaScript client
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Summary
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12. WCF Security
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12. WCF Security
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WCF security components
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Hosting a WCF service using basic authentication
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Hosting a WCF service with Windows authentication
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Summary
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13. Extending WCF Services
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13. Extending WCF Services
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The WCF runtime architecture
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Why extend WCF services?
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WCF extension points
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Extending a WCF service
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Extending HelloWorldService
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Summary
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Index
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Index

Adding a data access layer

We have two layers, the service interface layer and the business logic layer, in our solution now. We don't have any code to interact with a data store to manipulate the underlying data. As said in the previous chapter, such code should be separated from these two layers, so now we will add one more layer, the data access layer, for this purpose. Within this third layer, we will query a real database to get the product information and update the database for a given product.

Creating the data access layer project

First, we will create the project for the data access layer. As we did for the business logic layer, what we need to do is add a C# class library project named LayerNorthwindDAL (where DAL stands for Data Access Layer) to the solution. Then, we need to change the default class file to be our Data Access Object (DAO) file.

Now, modify the Class1.cs file as follows:

  1. Rename it to ProductDAO.cs. This will also rename the class name and all related places...
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