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building software tohelp our clients growSINCE 1985

www.tallan.com

Entity Framework 4 and WCFData Services 4

Max Weber - Senior Consultant

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Get started with Entity Framework 4

Get started with WCF Data Services 4

Create website iBlog

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Presentation Goals

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Entity Data Model

Entity Framework 4

Open up Visual Studio

WCF Data Services 4

Open up Visual Studio

Summary / Questions

Cake

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Presentation Agenda

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Entity Data Model

The Entity Data Model (EDM) is a set of concepts thatdescribe the structure of data, regardless of its storedform. The EDM borrows from the Entity-RelationshipModel described by Peter Chen in 1976, but it alsobuilds on the Entity-Relationship Model and extends itstraditional uses.

Extensions to E-R Model:

Separation of the entities and relationships from theirstorage medium

http://msdn.microsoft.com/en-us/library/ee382825.aspx

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What is the Entity Data Model?

http://msdn.microsoft.com/en-us/library/ee382825.aspxhttp://msdn.microsoft.com/en-us/library/ee382825.aspxhttp://msdn.microsoft.com/en-us/library/ee382825.aspxhttp://msdn.microsoft.com/en-us/library/ee382825.aspx

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Entity Type

entity key, inheritance, entity Sets, entity container

Association Type

foreign key, multiplicity, navigation properties,

association set, entity container Property

Boolean, Int32, String

DateTime, Guid, BinaryComplex Types

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Entity Data Model Key Concepts

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Entity Framework Overview

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Entity Framework Overview

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Conceptual Model

Storage Model

Data Providers

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Entity Framework 4

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Conceptual schema definition language (CSDL)

Conceptual model == Domain model

.csdl file extension

CSDL is Entity Frameworks implementation of the

Entity Data Model

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Conceptual Model Entity Framework 4

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Store schema definition language (SSDL)

Storage model == Logical model

Storage models are provider-specific

.ssdl file extension

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Storage Model Entity Framework 4

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Mapping specification language (MSL)

Maps between conceptual and storage models

.msl file extension

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Mapping Concepts to Storage EF4

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EF uses the ADO.NET Data Provider model

Providers

MS SQL Server Indirect access to other DBs using ODBC, OLEDB

VistaDB

Devart

OpenLink Software

Synergy

5+ moreADO.NET Data Providers List

http://msdn.microsoft.com/en-us/data/dd363565.aspx

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Providers Entity Framework 4

http://msdn.microsoft.com/en-us/data/dd363565.aspxhttp://msdn.microsoft.com/en-us/data/dd363565.aspxhttp://msdn.microsoft.com/en-us/data/dd363565.aspxhttp://msdn.microsoft.com/en-us/data/dd363565.aspx

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Entity Data Model Wizard

ADO.NET Entity Data Model Designer

Update Model Wizard

Command line tool EDM Generator (EdmGen.exe)

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Entity Data Model Tools

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T4 Templates used to generate Entity classes from

CSDL

Entities based on EntitySet

Tied to .NET, System.Data

Plain Old CLR Objects (POCO)Need POCO extension from Visual Studio Gallery

POCO Proxy

Extensions from Visual Studio GalleryADO.NET POCO Entity Generator

Tangible T4 Editor

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Class Generation Entity Framework

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Code Time! Entity Framework 4

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Entity Framework: Recap

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Formerly .NET Data Services (aka Astoria)

Description:

WCF Data Services enables creation and consumptionof data services for the Web or an intranet by using the

Open Data Protocol (OData).

WCF Data Services

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Architecture Overview :

WCF Data Services

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Exposes data as resources (URI)

http://localhost/Northwind.svc/Customers(ALFKI)

http://localhost/Northwind.svc/Customers('ALFKI')/Orders?$filter=Freight gt 50

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RESTful work WCF Data Services

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Definition

OData enables you to expose your data as resourcesthat are addressable by URIs

Enables you to access and change data by using the

semantics of representational state transfer (REST)Standard HTTP verbs supported:

GET, PUT, POST, DELETE.

Open Data Protocol (OData)

Reference: WCF Data Services Overview -http://msdn.microsoft.com/library/cc668794.aspx

http://msdn.microsoft.com/library/cc668794.aspxhttp://msdn.microsoft.com/library/cc668794.aspx

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Atom

JSON

XML

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Output Formats WCF Data Services

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Entity Framework Provider

Uses Entity Data Models to structure access

Reflection Provider

Exposes data structures with interface IQueryable

Create/Update/Delete with interface IUpdatable

Custom Provider

Roll your own

Link to WCF Data Services Providers http://msdn.microsoft.com/en-us/library/dd672591.aspx

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Freedom of data source WCF DataServices

http://msdn.microsoft.com/en-us/library/dd672591.aspxhttp://msdn.microsoft.com/en-us/library/dd672591.aspxhttp://msdn.microsoft.com/en-us/library/dd672591.aspxhttp://msdn.microsoft.com/en-us/library/dd672591.aspx

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Service Operators

Act at a service level

Interceptors

Act at an entity set level

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Custom Business Logic WCF DataServices

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WCF Data Services Client Library

.NET Framework

Silverlight

OData SDK

Javascript (AJAX)PHP

Java

RubyWindows Phone 7 (not yet released)

Objective-C (iPhone) (not yet released)

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Client Libraries WCF Data Services

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Code Time! WCF Data Services

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OOTB IE Experience with WCF DS Atom feeds bad

Make this change to see Atom feeds properly:

Tools-> Internet Options -> Feeds and Web Slices(Settings)

Uncheck Turn on feed reading view

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WCF Data Services Atom feeds in IE

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Recap:

WCF Data Services

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Entity Data Model

Entity Framework 4

Conceptual Model

Storage Model

Class generation using T4 TemplatesWCF Data Services 4

OData v2

RESTful servicesMultiple Data Providers

Multiple Output formats

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In Summary

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This slide deck will be made available from the

following locations:

Tallan blogs - blogs.tallan.com

CTDOTNETwww.ctdotnet.org

Distribution of slide deck

http://blog.tallan.com/http://www.ctdotnet.org/http://www.ctdotnet.org/http://blog.tallan.com/

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Visual Studio Gallery

Visual Studio - Entity Framework 4.0 and WCF DataServices 4.0 in Visual Studio 2010

What's New and Cool in Entity Framework 4.0DevelopMentor

ADO.NET Entity Framework

Entity Framework At-a-Glance

WCF Data Services

WCF Data Services Overview

WCF (ADO.NET) Data Services At-a-Glance

Data Development Videos Programming Entity Framework

Don't Be Iffy (Julie Lerman)

Resources and Questions? Then Cake

http://visualstudiogallery.msdn.microsoft.com/en-us/http://msdn.microsoft.com/en-us/magazine/ee336128.aspxhttp://msdn.microsoft.com/en-us/magazine/ee336128.aspxhttp://www.develop.com/entityframework4http://www.develop.com/entityframework4http://www.develop.com/entityframework4http://www.develop.com/entityframework4http://msdn.microsoft.com/en-us/data/aa937723.aspxhttp://msdn.microsoft.com/en-us/data/aa937709.aspxhttp://msdn.microsoft.com/en-us/data/bb931106.aspxhttp://msdn.microsoft.com/library/cc668794.aspxhttp://msdn.microsoft.com/en-us/data/aa937697.aspxhttp://msdn.microsoft.com/en-us/data/videos.aspxhttp://learnentityframework.com/learnentityframework/http://thedatafarm.com/blog/http://thedatafarm.com/blog/http://thedatafarm.com/blog/http://thedatafarm.com/blog/http://learnentityframework.com/learnentityframework/http://msdn.microsoft.com/en-us/data/videos.aspxhttp://msdn.microsoft.com/en-us/data/aa937697.aspxhttp://msdn.microsoft.com/en-us/data/aa937697.aspxhttp://msdn.microsoft.com/en-us/data/aa937697.aspxhttp://msdn.microsoft.com/en-us/data/aa937697.aspxhttp://msdn.microsoft.com/en-us/data/aa937697.aspxhttp://msdn.microsoft.com/library/cc668794.aspxhttp://msdn.microsoft.com/en-us/data/bb931106.aspxhttp://msdn.microsoft.com/en-us/data/aa937709.aspxhttp://msdn.microsoft.com/en-us/data/aa937709.aspxhttp://msdn.microsoft.com/en-us/data/aa937709.aspxhttp://msdn.microsoft.com/en-us/data/aa937709.aspxhttp://msdn.microsoft.com/en-us/data/aa937709.aspxhttp://msdn.microsoft.com/en-us/data/aa937723.aspxhttp://www.develop.com/entityframework4http://www.develop.com/entityframework4http://www.develop.com/entityframework4http://www.develop.com/entityframework4http://msdn.microsoft.com/en-us/magazine/ee336128.aspxhttp://msdn.microsoft.com/en-us/magazine/ee336128.aspxhttp://msdn.microsoft.com/en-us/magazine/ee336128.aspxhttp://msdn.microsoft.com/en-us/magazine/ee336128.aspxhttp://msdn.microsoft.com/en-us/magazine/ee336128.aspxhttp://visualstudiogallery.msdn.microsoft.com/en-us/

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Its time for cake!

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