Book Image

WCF 4.0 Multi-tier Services Development with LINQ to Entities

By : Mike Liu
Book Image

WCF 4.0 Multi-tier Services Development with LINQ to Entities

By: Mike Liu

Overview of this book

WCF is the Microsoft model for building services, whereas LINQ to Entities is the Microsoft ORM for accessing underlying data storage. Want to learn both? You would normally have to dig through huge reference tomes—so wouldn't you agree that a simple-to-follow practical tutorial on WCF and LINQ to Entities is the way to get ahead?This book is the quickest and easiest way to learn WCF and LINQ to Entities in Visual Studio 2010. WCF and LINQ to Entities are both powerful yet complex technologies from Microsoft—but you will be surprised at how easily this book will get you get up and running with them.Mastery of these two topics will quickly enable you to create Service-Oriented applications, and allow you to take your first steps into the world of Service Oriented Architecture without becoming overwhelmed.Through this book, you will learn what's going on behind the scenes with WCF, and dive into the basic yet most useful techniques for LINQ to Entities. You will develop three real-world multi-tiered WCF services from beginning to end, with LINQ to Entities being used in the data access layer of the services. Various clients including windows console applications, the WCF Test Client, Windows Form applications and WPF applications will be created to test these WCF services. By the end of this book, you will be 100% confident that you know WCF and LINQ to Entities, not only in theory, but with sound real-world experience.

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WCF 4.0 Multi-tier Services Development with LINQ to Entities
Mike Liu
Jun, 2010 | 348 pages
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Table of Contents (16 chapters)
WCF 4.0 Multi-tier Services Development with LINQ to Entities
WCF 4.0 Multi-tier Services Development with LINQ to Entities
Credits
Credits
About the Author
About the Author
About the Reviewers
About the Reviewers
Preface
Preface
Free Chapter
1
Introducing Web Services and Windows Communication Foundation
Introducing Web Services and Windows Communication Foundation
What is SOA?
Web services
Web services: standards and specifications
WCF: Windows Communication Foundation
What is WCF?
Why is WCF used for SOA?
WCF architecture
Basic WCF concepts—WCF ABCs
WCF production and development environments
Summary
2
Implementing a Basic HelloWorld WCF Service
Implementing a Basic HelloWorld WCF Service
Creating the HelloWorld solution and project
Creating the HelloWorldService service contract interface
Implementing the HelloWorldService service contract
Hosting the WCF service in ASP.NET Development Server
Creating a client to consume the WCF service
Summary
3
Hosting and Debugging the HelloWorld WCF Service
Hosting and Debugging the HelloWorld WCF Service
Hosting the HelloWorld WCF service
Debugging the HelloWorld WCF service
Summary
4
Implementing a WCF Service in the Real World
Implementing a WCF Service in the Real World
Why layer a service?
Creating a new solution and project using WCF templates
Creating the service interface layer
Adding a business logic layer
Summary
5
Adding Database Support and Exception Handling to the RealNorthwind WCF Service
Adding Database Support and Exception Handling to the RealNorthwind WCF Service
Adding a data access layer
Adding error handling to the service
Summary
6
LINQ—Language Integrated Query
LINQ—Language Integrated Query
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
7
LINQ to Entities: Basic Concepts and Features
LINQ to Entities: Basic Concepts and Features
ORM—Object-Relational Mapping
Entity Framework
LINQ to Entities
Comparing LINQ to Entities with LINQ to Objects
Comparing LINQ to SQL with LINQ to Entities
Creating a LINQ to Entities test application
Creating the Data Model
Querying and updating the database with a table
View Generated SQL statements
Deferred execution
Deferred (lazy) loading versus eager loading
Joining two tables
Querying a view
Summary
8
LINQ to Entities: Advanced Concepts and Features
LINQ to Entities: Advanced Concepts and Features
Calling a stored procedure
Compiled query
Direct SQL
Dynamic query
Inheritance
Handling simultaneous (concurrent) updates
Transaction support
Adding validations to entity classes
Debugging LINQ to Entities programs
Summary
9
Applying LINQ to Entities to a WCF Service
Applying LINQ to Entities to a WCF Service
Creating the LINQNorthwind solution
Modeling the Northwind database
Copying the connection string to the service layer
Using LINQ to Entities in the data access layer
Adding concurrency support
Testing concurrency with WCF Test Client
Testing concurrency with our own client
Summary
10
Distributed Transaction Support of WCF
Distributed Transaction Support of WCF
Creating the DistNorthwind solution
Hosting the WCF service in IIS
Testing the transaction behavior of the WCF service
Enabling distributed transaction support
Understanding the distributed transaction support of a WCF service
Testing the distributed transaction support of the WCF service
Summary
Index
Index

About the Author

Mike Liu studied Mathematics and Applied Software Engineering at Nanjing University between 1984 and 1988. After graduating with a bachelor's degree, he worked as a Programmer/Senior Software Engineer/Architect on Unix and DOS using C/C++, Dbase, and Oracle. In 1995 he moved to New Zealand and studied Business Computing at Auckland University of Technology. During the five-year stay in New Zealand, he worked as a Senior Software Engineer on Unix and Windows using C/C++, Java, FoxPro, Informix, Oracle, and SQL Server. He moved to the United States in 2000 and since then has been working as a Web Developer/Senior Software Engineer/Principal Software Engineer of various operating systems using various programming languages and database technologies. He studied Software Engineering at Brandeis University and graduated in 2005 with a master's degree.

Mike became a Sun Certified Java Programmer (SCJP) in 2000, a Microsoft Certified Solution Developer (MCSD) for Visual Studio 6.0 in 2001, and an MCSD for .NET in 2004. He started using C# for production development back in the year 2001 when C# was still in beta stage and he is now integrating a Business Process Management application with a WCF services backend system.

Mike had his first book—MITT: Multi-user Integrated Table-processing Tool Under Unix—published in 1993, and had his second book—Advanced C# Programming—published in 2003. The previous version of this book—WCF Multi-tier Services Development with LINQ—was published in 2008, with LINQ to SQL being used as the ORM in the data access layer of the WCF services.

Many thanks to the editors and technical reviewers at Packt Publishing. Without their help this book wouldn't be of such high quality. And thanks to my wife, Julia Guo, and my two sons, Kevin and James Liu, for their consideration and sacrifices while I was working on this book.

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