Programming Entity Framework - 2nd Revised Edition

Informationen zum Autor Julia Lerman is the leading independent authority on the Entity Framework and has been using and teaching the technology since its inception in 2006. She is well known in the .NET community as a Microsoft MVP, ASPInsider, and INETA Speaker. Julia is a frequent presenter at technical conferences around the world and writes articles for many well-known technical publications including the Data Points column in MSDN Magazine. Julia lives in Vermont with her husband, Rich, and gigantic dog, Sampson, where she runs the Vermont.NET User Group. You can read her blog at www.thedatafarm.com/blog and follow her on Twitter at julielerman. Klappentext Get a thorough introduction to ADO.NET Entity Framework 4 -- Microsoft's core framework for modeling and interacting with data in .NET applications. The second edition of this acclaimed guide provides a hands-on tour of the framework latest version in Visual Studio 2010 and .NET Framework 4. Not only will you learn how to use EF4 in a variety of applications, you'll also gain a deep understanding of its architecture and APIs. Written by Julia Lerman, the leading independent authority on the framework, Programming Entity Framework covers it all -- from the Entity Data Model and Object Services to WCF Services, MVC Apps, and unit testing. This book highlights important changes for experienced developers familiar with the earlier version. * Understand the core concepts you need to make the best use of the EF4 in your applications * Learn to query your data, using either LINQ to Entities or Entity SQL * Create Windows Forms, WPF, ASP.NET Web Forms, and ASP.NET MVC applications * Build and consume WCF Services, WCF Data Services, and WCF RIA Services * Use Object Services to work directly with your entity objects * Create persistent ignorant entities, repositories, and write unit tests * Delve into model customization, relationship management, change tracking, data concurrency, and more * Get scores of reusable examples -- written in C# (with notes on Visual Basic syntax) -- that you can implement right away Zusammenfassung Entity Framework is the focus of Microsoft's data access strategy. This goes far beyond .NET developers and is being embedded into many of their new technologies; for example, SQL Server 2010, BizTalk, Oslo, Azure, Astoria etcetera. This book walks the reader through their first introduction to Entity Framework and the Entity Data Model. Inhaltsverzeichnis Foreword;Preface; Who This Book Is For; How This Book Is Organized; What You Need to Use This Book; This Book's Website; Conventions Used in This Book; Using Code Examples; Safari® Books Online; Comments and Questions; Acknowledgments;Author Note for Third Printing, August 2011; Entity Framework 4.1 (Code First and DbContext) Has Released; Entity Framework June 2011 CTP;Chapter 1: Introducing the ADO.NET Entity Framework; 1.1 The Entity Relationship Model: Programming Against a Model, Not the Database; 1.2 The Entity Data Model: A Client-Side Data Model; 1.3 Entities: Blueprints for Business Classes; 1.4 The Backend Database: Your Choice; 1.5 Entity Framework Features: APIs and Tools; 1.6 The Entity Framework and WCF Services; 1.7 What About ADO.NET DataSets and LINQ to SQL?; 1.8 Entity Framework Pain Points Are Fading Away; 1.9 Programming the Entity Framework;Chapter 2: Exploring the Entity Data Model; 2.1 Why Use an Entity Data Model?; 2.2 The EDM Within the Entity Framework; 2.3 Walkthrough: Building Your First EDM; 2.4 Inspecting the EDM in the Designer Window; 2.5 The Model's Supporting Metadata; 2.6 Viewing the Model in the Model Browser; 2.7 Viewing the Model's Raw XML; 2.8 CSDL: The Conceptual Schema; 2.9 SSDL: The Store Schema; 2.10 MSL: The Mappings; 2.11 Database Views in the EDM; 2.12 Summary;Chapter 3: Querying Entity Data ...

List of contents

Foreword;
Preface;
Who This Book Is For;
How This Book Is Organized;
What You Need to Use This Book;
This Book's Website;
Conventions Used in This Book;
Using Code Examples;
Safari® Books Online;
Comments and Questions;
Acknowledgments;
Author Note for Third Printing, August 2011;
Entity Framework 4.1 (Code First and DbContext) Has Released;
Entity Framework June 2011 CTP;
Chapter 1: Introducing the ADO.NET Entity Framework;
1.1 The Entity Relationship Model: Programming Against a Model, Not the Database;
1.2 The Entity Data Model: A Client-Side Data Model;
1.3 Entities: Blueprints for Business Classes;
1.4 The Backend Database: Your Choice;
1.5 Entity Framework Features: APIs and Tools;
1.6 The Entity Framework and WCF Services;
1.7 What About ADO.NET DataSets and LINQ to SQL?;
1.8 Entity Framework Pain Points Are Fading Away;
1.9 Programming the Entity Framework;
Chapter 2: Exploring the Entity Data Model;
2.1 Why Use an Entity Data Model?;
2.2 The EDM Within the Entity Framework;
2.3 Walkthrough: Building Your First EDM;
2.4 Inspecting the EDM in the Designer Window;
2.5 The Model's Supporting Metadata;
2.6 Viewing the Model in the Model Browser;
2.7 Viewing the Model's Raw XML;
2.8 CSDL: The Conceptual Schema;
2.9 SSDL: The Store Schema;
2.10 MSL: The Mappings;
2.11 Database Views in the EDM;
2.12 Summary;
Chapter 3: Querying Entity Data Models;
3.1 Query the Model, Not the Database;
3.2 Your First EDM Query;
3.3 Querying with LINQ to Entities;
3.4 Querying with Object Services and Entity SQL;
3.5 Querying with Methods;
3.6 The Shortest Query;
3.7 ObjectQuery, ObjectSet, and LINQ to Entities;
3.8 Querying with EntityClient to Return Streamed Data;
3.9 Translating Entity Queries to Database Queries;
3.10 Avoiding Inadvertent Query Execution;
3.11 Summary;
Chapter 4: Exploring LINQ to Entities in Greater Depth;
4.1 Getting Ready with Some New Lingo;
4.2 Projections in Queries;
4.3 Projections in LINQ to Entities;
4.4 Using Navigations in Queries;
4.5 Joins and Nested Queries;
4.6 Grouping;
4.7 Shaping Data Returned by Queries;
4.8 Loading Related Data;
4.9 Retrieving a Single Entity;
4.10 Finding More Query Samples;
4.11 Summary;
Chapter 5: Exploring Entity SQL in Greater Depth;
5.1 Literals in Entity SQL;
5.2 Projecting in Entity SQL;
5.3 Using Navigation in Entity SQL Queries;
5.4 Using Joins;
5.5 Nesting Queries;
5.6 Grouping in Entity SQL;
5.7 Shaping Data with Entity SQL;
5.8 Understanding Entity SQL's Wrapped and Unwrapped Results;
5.9 Summary;
Chapter 6: Modifying Entities and Saving Changes;
6.1 Keeping Track of Entities;
6.2 Saving Changes Back to the Database;
6.3 Inserting New Objects;
6.4 Inserting New Parents and Children;
6.5 Deleting Entities;
6.6 Summary;
Chapter 7: Using Stored Procedures with the EDM;
7.1 Updating the Model from a Database;
7.2 Working with Functions;
7.3 Mapping Functions to Entities;
7.4 Using the EDM Designer Model Browser to Import Additional Functions into Your Model;
7.5 Mapping the First of the Read Stored Procedures: ContactsbyState;
7.6 Mapping a Function to a Scalar Type;
7.7 Mapping a Function to a Complex Type;
7.8 Summary;
Chapter 8: Implementing a More Real-World Model;
8.1 Introducing the BreakAway Geek Adventures Business Model and Legacy Database;
8.2 Creating a Separate Project for an EDM;
8.3 Inspecting and Cleaning Up a New EDM;
8.4 Setting Default Values;
8.5 Mapping Stored Procedures;
8.6 Working with Many-to-Many Relationships;
8.7 Inspecting the Completed BreakAway Model;
8.8 Building the BreakAway Model Assembly;
8.9 Summary;
Chapter 9: Data Binding with Windows Forms and WPF Applications;
9.1 Data Binding with Windows Forms Applications;
9.2 Data Binding with WPF Applications;
9.3 Summary;
Chapter 10: Working with Object Services;
10.1 Where Does Object Services Fit into the Framework?;
10.2 Processing Queries;
10.3 Materializing Objects;
10.4 Managing Object State;
10.5 Managing Relationships;
10.6 Taking Control of ObjectState;
10.7 Sending Changes Back to the Database;
10.8 Implementing Serialization, Data Binding, and More;
10.9 Summary;
Chapter 11: Customizing Entities;
11.1 Partial Classes;
11.2 Using Partial Methods;
11.3 Subscribing to Event Handlers;
11.4 Creating Your Own Partial Methods and Properties;
11.5 Overriding Default Code Generation;
11.6 Summary;
Chapter 12: Data Binding with RAD ASP.NET Applications;
12.1 Using the EntityDataSource Control to Access Flat Data;
12.2 Understanding How the EntityDataSource Retrieves and Updates Your Data;
12.3 Working with Related EntityReference Data;
12.4 Working with Hierarchical Data in a Master/Detail Form;
12.5 Exploring EntityDataSource Events;
12.6 Building Dynamic Data Websites;
12.7 Summary;
Chapter 13: Creating and Using POCO Entities;
13.1 Creating POCO Classes;
13.2 Change Tracking with POCOs;
13.3 Loading Related Data with POCOs;
13.4 Exploring and Correcting POCOs' Impact on Two-Way Relationships;
13.5 Using Proxies to Enable Change Notification, Lazy Loading, and Relationship Fix-Up;
13.6 Using T4 to Generate POCO Classes;
13.7 Creating a Model That Works with Preexisting Classes;
13.8 Code First: Using Entity Framework with No Model at All;
13.9 Summary;
Chapter 14: Customizing Entity Data Models Using the EDM Designer;
14.1 Mapping Table per Type Inheritance for Tables That Describe Derived Types;
14.2 Mapping Unique Foreign Keys;
14.3 Mapping an Entity to More Than One Table;
14.4 Splitting a Single Table into Multiple Entities;
14.5 Filtering Entities with Conditional Mapping;
14.6 Implementing Table per Hierarchy Inheritance for Tables That Contain Multiple Types;
14.7 Creating Complex Types to Encapsulate Sets of Properties;
14.8 Using Additional Customization Options;
14.9 Summary;
Chapter 15: Defining EDM Mappings That Are Not Supported by the Designer;
15.1 Using Model-Defined Functions;
15.2 Mapping Table per Concrete (TPC) Type Inheritance for Tables with Overlapping Fields;
15.3 Using QueryView to Create Read-Only Entities and Other Specialized Mappings;
15.4 Summary;
Chapter 16: Gaining Additional Stored Procedure and View Support in the Raw XML;
16.1 Reviewing Procedures, Views, and UDFs in the EDM;
16.2 Working with Stored Procedures That Return Data;
16.3 Executing Queries on Demand with ExecuteStoreQuery;
16.4 Adding Native Queries to the Model;
16.5 Adding Native Views to the Model;
16.6 Using Commands That Affect the Database;
16.7 Mapping Insert/Update/Delete to Types Within an Inheritance Structure;
16.8 Implementing and Querying with User-Defined Functions (UDFs);
16.9 Summary;
Chapter 17: Using EntityObjects in WCF Services;
17.1 Planning for an Entity Framework-Agnostic Client;
17.2 Building a Simple WCF Service with EntityObjects;
17.3 Implementing the Service Interface;
17.4 Building a Simple Console App to Consume an EntityObject Service;
17.5 Creating WCF Data Services with Entities;
17.6 Understanding How WCF RIA Services Relates to the Entity Framework;
17.7 Summary;
Chapter 18: Using POCOs and Self-Tracking Entities in WCF Services;
18.1 Creating WCF-Friendly POCO Classes;
18.2 Building a WCF Service That Uses POCO Classes;
18.3 Using the Self-Tracking Entities Template for WCF Services;
18.4 Using POCO Entities with WCF Data and RIA Services;
18.5 Sorting Out the Many Options for Creating Services;
18.6 Summary;
Chapter 19: Working with Relationships and Associations;
19.1 Deconstructing Relationships in the Entity Data Model;
19.2 Understanding the Major Differences Between Foreign Key Associations and Independent Associations;
19.3 Deconstructing Relationships Between Instantiated Entities;
19.4 Defining Relationships Between Entities;
19.5 Learning a Few Last Tricks to Make You a Relationship Pro;
19.6 Summary;
Chapter 20: Real World Apps: Connections, Transactions, Performance, and More;
20.1 Entity Framework and Connections;
20.2 Fine-Tuning Transactions;
20.3 Understanding Security;
20.4 Fine-Tuning Performance;
20.5 Exploiting Multithreaded Applications;
20.6 Exploiting .NET 4 Parallel Computing;
20.7 Summary;
Chapter 21: Manipulating Entities with ObjectStateManager and MetadataWorkspace;
21.1 Manipulating Entities and Their State with ObjectStateManager;
21.2 Using ObjectStateManager to Build an EntityState Visualizer;
21.3 Using the MetadataWorkspace;
21.4 Building Dynamic Queries and Reading Results;
21.5 Creating and Manipulating Entities Dynamically;
21.6 Summary;
Chapter 22: Handling Exceptions;
22.1 Preparing for Exceptions;
22.2 Handling EntityConnectionString Exceptions;
22.3 Handling Query Compilation Exceptions;
22.4 Creating a Common Wrapper to Handle Query Execution Exceptions;
22.5 Handling Exceptions Thrown During SaveChanges Command Execution;
22.6 Handling Concurrency Exceptions;
22.7 Summary;
Chapter 23: Planning for Concurrency Problems;
23.1 Understanding Database Concurrency Conflicts;
23.2 Understanding Optimistic Concurrency Options in the Entity Framework;
23.3 Implementing Optimistic Concurrency with the Entity Framework;
23.4 Handling OptimisticConcurrencyExceptions;
23.5 Handling Concurrency Exceptions at a Lower Level;
23.6 Handling Exceptions When Transactions Are Your Own;
23.7 Summary;
Chapter 24: Building Persistent Ignorant, Testable Applications;
24.1 Testing the BreakAway Application Components;
24.2 Getting Started with Testing;
24.3 Creating Persistent Ignorant Entities;
24.4 Building Tests That Do Not Hit the Database;
24.5 Using the New Infrastructure in Your Application;
24.6 Application Architecture Benefits from Designing Testable Code;
24.7 Considering Mocking Frameworks?;
24.8 Summary;
Chapter 25: Domain-Centric Modeling;
25.1 Creating a Model and Database Using Model First;
25.2 Using the Feature CTP Code-First Add-On;
25.3 Using SQL Server Modeling's "M" Language;
25.4 Summary;
Chapter 26: Using Entities in Layered Client-Side Applications;
26.1 Isolating the ObjectContext;
26.2 Separating Entity-Specific Logic from ObjectContext Logic;
26.3 Working with POCO Entities;
26.4 Summary;
Chapter 27: Building Layered Web Applications;
27.1 Understanding How ObjectContext Fits into the Web Page Life Cycle;
27.2 Building an N-Tier Web Forms Application;
27.3 Building an ASP.NET MVC Application;
27.4 Editing Entities and Graphs on an MVC Application;
27.5 Summary;
Entity Framework Assemblies and Namespaces;
Unpacking the Entity Framework Files;
Exploring the Namespaces;
Data-Binding with Complex Types;
Using Complex Types with ASP.NET EntityDataSource;
Identifying Unexpected Behavior When Binding Complex Types;
Additional Details About Entity Data Model Metadata;
Seeing EDMX Schema Validation in Action;
Additional Conceptual Model Details;
Additional SSDL Metadata Details;
Additional MSL Metadata Details;
Colophon;

About the author

Julia Lerman is the leading independent authority on the Entity Framework and has been using and teaching the technology since its inception in 2006. She is well known in the .NET community as a Microsoft MVP, ASPInsider, and INETA Speaker. Julia is a frequent presenter at technical conferences around the world and writes articles for many well-known technical publications including the Data Points column in MSDN Magazine.

Julia lives in Vermont with her husband, Rich, and gigantic dog, Sampson, where she runs the Vermont.NET User Group. You can read her blog at www.thedatafarm.com/blog and follow her on Twitter at julielerman.

Product details

• Authors: Lerman, Julia Lerman, Lerman Julia
• Publisher: Wiley, John and Sons Ltd
• Languages: English
• Product format: Paperback / Softback
• Released: 03.09.2010
• EAN: 9780596807269
• ISBN: 978-0-596-80726-9
• Series: OREILLY
• Subjects: Natural sciences, medicine, IT, technology > IT, data processing > Programming languages; Datenbankprogrammierung, Programming and scripting languages: general, microsoft, ado.net, .net, entity framework, cloud